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Journal articles on the topic 'Fruit juice'
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1
Kowalska, Małgorzata, Justyna Konopska, Melánia Feszterová, Anna Zbikowska, and Barbara Kowalska. "Quality Assessment of Natural Juices and Consumer Preferences in the Range of Citrus Fruit Juices." Applied Sciences 13, no. 2 (January 5, 2023): 765. http://dx.doi.org/10.3390/app13020765.
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The purpose of the study was to analyse and update consumers’ changing preferences in the choice of citrus fruit juices and to evaluate the sensory and physicochemical characteristics of two kinds of juices: juice squeezed from raw fruit and a commercial juice indicated by respondents as best matching their preferences. The survey was conducted in the form of an online survey posted on app.ankieteo.pl. The survey was also sent via a link through social networks. A total of 862 people took part in the survey. Consumers are most likely to consume juices one to three times a week (28.3%). Orange juice was the most popular among respondents (52.4%). The main factors influencing decisions to purchase citrus fruit juices are the type of fruit from which the juice was made, the vitamin content and the product’s price. In choosing juices, respondents were also guided by favourable health qualities and the presence of minerals. From the physicochemical determinations of orange juices obtained from a juicer and squeezer and commercial juice “O”, it was found that the quality of commercial orange juice indicated by consumers in the survey is comparable to juices made with a squeezer or a juice.
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Agomuo, J., I. Alaka, and Linda Akajiaku. "Microbiological Status of S oymilk- Fruit Juice Drink as Affected by Orange and Pineapple Juice Replacement." Current Research in Nutrition and Food Science Journal 2, no. 3 (December 1, 2014): 153–58. http://dx.doi.org/10.12944/crnfsj.2.3.07.
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The effect of orange and pineapple fruit juice replacement on microbiological status of soymilk- fruit juice drink was studied. Soybean seeds, fresh ripe orange and pineapple fruits were processed into soymilk, and fruit juices respectively. The orange and pineapple juices were blended at equal proportion to get mixed fruit juice (MFJ). MFJ was used to replace soymilk (SM) at 10%, 20%, 30%, 40% and 50% levels without addition of any chemical preservatives. The microbiological status of the soy-mixed fruit juice (SMFJ) was evaluated. Microbial examination showed that bacteria count was higher in SMFJ5 (50:50) (40 x 40-2Cfu/ml) and lower in MFJ (100% mixed fruit juice) (11 x 10-2Cful/ml). There was no coliform growth, suggesting absence of faecal contamination. Fungal growth was higher (24 x 10-2Cful/ml) at 40 % juice dilution. Microbes such as Bacillus sp, Staphiloccocus sp and Penicillin were isolated in the samples. The morphology of the microbes was ascertained thereby providing information for the preservation of the beverage and encouraging its processing.
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Colás-Medà, Pilar, Iolanda Nicolau-Lapeña, Inmaculada Viñas, Isma Neggazi, and Isabel Alegre. "Bacterial Spore Inactivation in Orange Juice and Orange Peel by Ultraviolet-C Light." Foods 10, no. 4 (April 15, 2021): 855. http://dx.doi.org/10.3390/foods10040855.
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Spore-forming bacteria are a great concern for fruit juice processors as they can resist the thermal pasteurization and the high hydrostatic pressure treatments that fruit juices receive during their processing, thus reducing their microbiological quality and safety. In this context, our objective was to evaluate the efficacy of Ultraviolet-C (UV-C) light at 254 nm on reducing bacterial spores of Alicyclobacillus acidoterrestris, Bacillus coagulans and Bacillus cereus at two stages of orange juice production. To simulate fruit disinfection before processing, the orange peel was artificially inoculated with each of the bacterial spores and submitted to UV-C light (97.8–100.1 W/m2) with treatment times between 3 s and 10 min. The obtained product, the orange juice, was also tested by exposing the artificially inoculated juice to UV-C light (100.9–107.9 W/m2) between 5 and 60 min. A three-minute treatment (18.0 kJ/m2) reduced spore numbers on orange peel around 2 log units, while more than 45 min (278.8 kJ/m2) were needed to achieve the same reduction in orange juice for all evaluated bacterial spores. As raw fruits are the main source of bacterial spores in fruit juices, reducing bacterial spores on fruit peels could help fruit juice processors to enhance the microbiological quality and safety of fruit juices.
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M. N, Chukwu,, Kabuo, N.O, Okezie P.F, and Chukwujekwu Chukwujekwu. "Production and Evaluation of Fruit Juice Blends from Velvet Tamarind (Dilium Guineese) and Noni Fruit Juice (Morinda Citrifolia)." Nutrition and Food Processing 5, no. 3 (May 28, 2022): 01–09. http://dx.doi.org/10.31579/2637-8914/090.
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This study was aimed to explore the production and evaluation of fruit juice blends from velvet tamarind and noni juices. Velvet tamarind fruit was processed to obtain 100% juice (VT sample) while that of noni fruit was also processed to obtain 100% pure juice (N sample). The respective fruit juice blends (N and VT) were formulated: VTN1, VTN2, VTN3, VTN4 at different ratios (20:80%, 40:60%, 60:40%, 80:20%) while N and VT were used as the control. Microbial analysis using pour plate method and sensory evaluation using 9-point hedonic scale were carried out. The blending of these fruit juices gave better sensory quality product with therapeutic effects. The controls VT (100%) was found to be best in all organoleptic attributes (approximately 7.00 = like moderately) and with microbial count of (6.5x103 cfu/g) while control (100%) samples rated worse sensorily. Sample VTN4 rated best followed by VTN3, VTN2, VTN1 respectively. Blending Velvet tamarind (VT) and Noni (N) juices at different proportions result reduce bland taste, unpleasant aroma of noni which improves the organoleptic acceptability of the blends. Noni mellowed down the tartness of velvet tamarind juice thus, obtaining refreshing, therapeutic, vitamin C., … antioxidant, and acceptable organoleptic characteristics of fruit juice blends.
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Di Stefano, Vita, Salvatore Scandurra, Antonella Pagliaro, Vincenzo Di Martino, and Maria Grazia Melilli. "Effect of Sunlight Exposure on Anthocyanin and Non-Anthocyanin Phenolic Levels in Pomegranate Juices by High Resolution Mass Spectrometry Approach." Foods 9, no. 9 (August 23, 2020): 1161. http://dx.doi.org/10.3390/foods9091161.
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Quali-quantitative analyses of anthocyanins and non-anthocyanin phenolic compounds performed with the use of liquid chromatography coupled with high resolution mass spectrometry, were evaluated in juice of pomegranate fruits (‘Dente di Cavallo’), in relation to different light exposures (North, South, West and East). A total of 16 compounds were identified, including phenolic acids, flavonoids, hydrolysable tannins, and anthocyanins, known for their health-promoting effects. Striking differences were observed about the total phenolic content, which was high in juices from fruits with east- and north-facing position, while it was lower in juices facing south. The greatest contents of total flavonoids and anthocyanins were recorded in fruit juices with southern exposure; however, there are no great differences in the content in phenolic acids. Tannins were mainly synthesized in fruit juices with West exposure. The results showed that the position within the tree had no significant effects on color juice, however, it significantly (p < 0.05) affected data on fruit weight, soluble sugars and juice yield. Remarkable synergies existed among polyphenols and phytochemicals in pomegranate juice, but collecting fruits with different solar exposure could enhance different health benefits, i.e., the juices with higher polyphenols content could have more anticancer effect or those with higher tannins content could have more antimicrobial effect.
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Oluwole, Olusola, Oluwole David, Christopher Falegan, Biodun Awojuyigbe, and Olatunji Olajide. "Microbiological and physicochemical properties of commercial seal tampered refrigerated fruit juices." International Journal of Biological Research 4, no. 1 (February 26, 2016): 21. http://dx.doi.org/10.14419/ijbr.v4i1.5798.
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<p>Microbial and physicochemical properties of seven branded, seal tampered refrigerated fruit juices were carried out in this study using standard methods. Coliform counts ranged from 2.079 to3.093 log<sub>10</sub>cfu/ml over the storage period with pineapple juice and citrus juice having the highest and least coliform count respectively. Total bacteria count in the juice ranged from 7.009 to 8.243 log<sub>10</sub>cfu/ml. Citrus fruit juice however had the highest staphylococcal count while pineapple juice had the least (2.344 to 3.881log<sub>10</sub>cfu/ml). Also, osmophilic yeast count ranged from 2.017 to 3.903log<sub>10</sub>cfu/ml, having the highest load in orange fruit juice and lowest load in citrus fruit juice. The pH of the juice samples ranged from 2.9 to 4.2 during the period of refrigeration. Conductivity was highest in apple fruit juice and lowest in orange nectar pulp fruit juice. The total dissolved solids ranged from 0.29 to 1.95 over storage and was recorded highest in apple juice and lowest in orange nectar pulp fruit juice. Turbidity ranged from 5.8-200. These results indicate a reduction in the quality of fruit juices after 5 days of opening and thus reveals that both spoilage and pathogenic organisms could proliferate in juices despite refrigeration.</p>
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Lifschitz, Carlos H. "Fruit Juice." Pediatrics 96, no. 2 (August 1, 1995): 376–77. http://dx.doi.org/10.1542/peds.96.2.376b.
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In their article "Carbohydrate Absorption From Fruit Juice in Young Children," Smith et al1 confirm the fact that the mix of carbohydrates, rather than the type or concentration alone, have an overriding effect in determining their degree of intestinal absorption. In his commentary, Dr Klish suggests that "if used in reasonable amounts...it probably makes no difference what fruit juice is fed."2 Dietary fiber is defined as "nondigestible carbohydrates and lignins." The American Academy of Pediatrics3 states that high-fiber diets effectively treat constipation...and that "possibly 75% of children in the United States eat less than the recommended amounts of fruits and vegetables."
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Nicomrat, Duongruitai, Manoch Lakthandee, Nednapa Suenonmueng, and Ninlawan Marjang. "Lactic Acid Bacteria Starter Participating in Hygienic Long Shelf-Life of the Plaa-Som Fermented Product." Applied Mechanics and Materials 879 (March 2018): 113–17. http://dx.doi.org/10.4028/www.scientific.net/amm.879.113.
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Consumptions of fermented vinegar made of fresh fruit juices have been increased dramatically due to their freshness, high vitamin content, and low caloric consumption. Unpasteurized fruit juice produced by pressing or squeezing of the fruits also have many diverse microflora which is normally present on the surface of fruits during harvest and postharvest processing and possibly include transport, storage, and processing. In the study, many microorganisms producing acid especially bacteria, fungi, and yeasts demonstrated the high acid production and using fruit juice as a substrate for their growth. Three acid producing bacteria were isolated and characterized for the acid production as well as applied for the fruit vinegar fermentation process.
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Pepin, Alexandra, Kimber L. Stanhope, and Pascal Imbeault. "Are Fruit Juices Healthier Than Sugar-Sweetened Beverages? A Review." Nutrients 11, no. 5 (May 2, 2019): 1006. http://dx.doi.org/10.3390/nu11051006.
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Free sugars overconsumption is associated with an increased prevalence of risk factors for metabolic diseases such as the alteration of the blood lipid levels. Natural fruit juices have a free sugar composition quite similar to that of sugar-sweetened beverages. Thus, could fruit juice consumption lead to the same adverse effects on health as sweetened beverages? We attempted to answer this question by reviewing the available evidence on the health effects of both sugar-sweetened beverages and natural fruit juices. We determined that, despite the similarity of fruits juices to sugar-sweetened beverages in terms of free sugars content, it remains unclear whether they lead to the same metabolic consequences if consumed in equal dose. Important discrepancies between studies, such as type of fruit juice, dose, duration, study design, and measured outcomes, make it impossible to provide evidence-based public recommendations as to whether the consumption of fruit juices alters the blood lipid profile. More randomized controlled trials comparing the metabolic effects of fruit juice and sugar-sweetened beverage consumption are needed to shape accurate public health guidelines on the variety and quantity of free sugars in our diet that would help to prevent the development of obesity and related health problems.
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Pomeranz, Jennifer L., and Jennifer L. Harris. "Children’s Fruit “Juice” Drinks and FDA Regulations: Opportunities to Increase Transparency and Support Public Health." American Journal of Public Health 110, no. 6 (June 2020): 871–80. http://dx.doi.org/10.2105/ajph.2020.305621.
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Objectives. To compare children’s drink products that contain or purport to contain juice and evaluate labels in light of US Food and Drug Administration (FDA) regulations. Methods. In 2019, we analyzed federal law for drinks that contain or purport to contain juice by using LexisNexis and FDA’s Web site, identified top-selling children’s “juice” drinks in fruit punch flavors, gathered labels in store and online, and extracted data from the principal display and information panels. Results. FDA regulations permit a wide range of names, claims, and fruit vignettes on drinks that contain or purport to contain juice, reflecting the product’s flavor and not necessarily its ingredients. We identified 39 brands of children’s drinks, including 100% juice (n = 7), diluted juices (n = 11), juice drinks (n = 8), fruit-flavored drinks (n = 8), and flavored waters (n = 5), with nonuniform statements of identity; vitamin C and low-sugar claims; and fruit vignettes representing 19 fruits. Many products contained added sugar and nonnutritive sweeteners but little to no juice. Conclusions. Principal display panels rendered it difficult to differentiate among product types, identify those with added sweeteners, and distinguish healthier products. Revised labeling regulations are warranted to support public health.
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Wojdyłto, Aneta, and Jan Oszmiański. "Bioactive Compounds of Selected Fruit Juices." Natural Product Communications 4, no. 5 (May 2009): 1934578X0900400. http://dx.doi.org/10.1177/1934578x0900400505.
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Fruits are one of the most important sources of phenolic compounds in our diet. Many of these compounds exhibit a wide range of biological activities, especially antioxidant activity. The objective of this study was to determine the composition and antioxidant activity of phenolic compounds found in fruit juice obtained from buckthorn, flowering quince, rowanberry and hawthorn. Hydroxycinnamic acids (neochlorogenic and chlorogenic acid) and procyanidins were the main phenolics in rowanberry juice. The highest level of flavonols (quercetin derivatives) was found in sea buckthorn. All juices showed strong free-radical scavenging activity against ABTS•+ radicals and ferric reducing ability measured by the FRAP method. The strongest antioxidant activity was found in rowanberry juice, but the lowest was measured in hawthorn and sea buckthorn juices.
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Irwan, Azidi, Kamilia Mustikasari, and Dahlena Ariyani. "Chemical Preliminary Evaluation of leaves, Peels, and Fleshs Fruit of Limau Kuit: Local Orange of South Kalimantan." Jurnal Sains dan Terapan Kimia 11, no. 2 (October 3, 2017): 71. http://dx.doi.org/10.20527/jstk.v11i2.4040.
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This research was conducted to know about fruit of limau kuit from South Kalimantan which includes weight, diemeter of fruit, volume of fruit juice, water content, and ash content of its flesh as well as water and ash content on leaves and fruit peel. Chemical preliminary examination includes measurement of pH of fruits juice and phytochemical screening test on leaves, fruit peel, and fruit flesh. The result is obtained with mean value as follows: weight 154,82 g, diameter offruit 68,45 mm, volume of juice water 44,60 ml, water content of fruit flesh 67,16%, water content of fruit peel 65,67%, leaf water content 65,88%, ash content 0,72%, fruit ash content 1,39%, and leaf ash content 3,32%. Measurement of pH of fruit juice without dilution; 100x; 1000x; and 10000x dilutions showing a value of 1.62; 2.08; 2.68; and 3.33, respectively. The results of the phytochemical examination on fresh samples of leaves, fruit peels, and fruit juices showed all samples giving positive (+) test results against alkaloids, saponins, steroids, triterpenoids (except negative (-) for fruit skin samples), tannins, and flavonoids (except (-) for the juice of the fruit). While the samples with the fresh-dried treatment extracted each using ethanol and n-hexane solvents showed (+) results for all sample extracts in both fresh-dried treatments, except (-) saponins in dried leaves (ethanol extract) and fruit peels fresh (n-hexane extract). Tannin test for fresh leaf (n-hexane) and flavonoid for fresh leaves (ethanol extract) and fresh fruit peel (ethanol extract) showed negative results.Keywords: Limau kuit, South Kalimantan, chemical preliminary test, phytochemical test, ethanol extract, n-hexane extract.
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Kiran Banan, Lata, and Amitha Hegde. "Plaque and salivary pH changes after consumption of fresh fruit juices." Journal of Clinical Pediatric Dentistry 30, no. 1 (September 1, 2006): 9–13. http://dx.doi.org/10.17796/jcpd.30.1.40145263j4506793.
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The concept of health has prevailed for centuries and the dietary habits are apparently changing with modernization. "Healthy eating" is now perceived to be important. The desirability of a healthful lifestyle has led to an increased consumption of juices. Drinking large amount of fruit juice is frequently practiced these days and the consumption of these juices is further modified with behavioral habits such as swishing and frothing the drinks around the mouth, sucking frozen fruit juices, use of feeder cups at bed time etc. Hence this study was conducted to find the acidogenic potential of the commonly consumed fresh fruit juices (Grapes, orange, and pineapple) and the juices stored at various temperatures (room temperature, refrigerator and freezer) on the plaque and saliva at various intervals. It was observed that grape juice was more acidogenic compared to orange and pineapple juice. Frozen fruit juices caused a greater drop in plaque and salivary pH followed by the refrigerated juice.
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Chen, Xiao, Joanna Le Hoong Ting, Yaoyao Peng, Pipat Tangjaidee, Yongchao Zhu, Qili Li, Yang Shan, and Siew Young Quek. "Comparing Three Types of Mandarin Powders Prepared via Microfluidic-Jet Spray Drying: Physical Properties, Phenolic Retention and Volatile Profiling." Foods 10, no. 1 (January 8, 2021): 123. http://dx.doi.org/10.3390/foods10010123.
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This study aimed to offer an alternative way for delivering the benefits of the mandarin fruit juice to consumers via spray drying microencapsulation. Two mandarin cultivars, Afourer (A) and Richard Special (RS), were studied. Three types of juice sample were prepared, i.e., the whole fruit juice (A3 & RS3), the flavedo-removed fruit juice (A2 & RS2), and the peel-removed fruit juice (A1 & RS1) samples. Gum Acacia and maltodextrin (ratio of 1:1, w/w) were chosen as wall matrices for aiding the drying of the juice samples while using a microfluidic-jet spray dryer. The properties of the fruit powder (colour, water activity, bulk/trapped density, solubility, hygroscopicity, morphology) and the retention of major phytochemicals (i.e., phenolic and volatile compounds) were examined. The results showed that the powders produced from the whole fruit juices (A3 and RS3) gave higher yellow colour with a regular winkled surface than other powders (A1 & RS1, and A2 & RS2). The water activity of mandarin powders was in a range of 0.14 to 0.25, and the solubility was around 74% with no significant difference among all of the powders. The whole fruit powders had a significantly higher concentration of phenolic compounds (A3, 1023 µg/100 mg vs. A2, 809 µg/100 mg vs. A1, 653 µg/100 mg) and aroma compounds (A3, 775,558 µg/L vs. A2, 125,617 µg/L vs. A1, 12,590 µg/L). This study contributed to the delivery of phenolic and flavour compounds of the mandarin fruits, at the same time minimising waste generation during processing. It also gave insight into the production of spray-dried powders from the whole mandarin fruits.
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Chen, Xiao, Joanna Le Hoong Ting, Yaoyao Peng, Pipat Tangjaidee, Yongchao Zhu, Qili Li, Yang Shan, and Siew Young Quek. "Comparing Three Types of Mandarin Powders Prepared via Microfluidic-Jet Spray Drying: Physical Properties, Phenolic Retention and Volatile Profiling." Foods 10, no. 1 (January 8, 2021): 123. http://dx.doi.org/10.3390/foods10010123.
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This study aimed to offer an alternative way for delivering the benefits of the mandarin fruit juice to consumers via spray drying microencapsulation. Two mandarin cultivars, Afourer (A) and Richard Special (RS), were studied. Three types of juice sample were prepared, i.e., the whole fruit juice (A3 & RS3), the flavedo-removed fruit juice (A2 & RS2), and the peel-removed fruit juice (A1 & RS1) samples. Gum Acacia and maltodextrin (ratio of 1:1, w/w) were chosen as wall matrices for aiding the drying of the juice samples while using a microfluidic-jet spray dryer. The properties of the fruit powder (colour, water activity, bulk/trapped density, solubility, hygroscopicity, morphology) and the retention of major phytochemicals (i.e., phenolic and volatile compounds) were examined. The results showed that the powders produced from the whole fruit juices (A3 and RS3) gave higher yellow colour with a regular winkled surface than other powders (A1 & RS1, and A2 & RS2). The water activity of mandarin powders was in a range of 0.14 to 0.25, and the solubility was around 74% with no significant difference among all of the powders. The whole fruit powders had a significantly higher concentration of phenolic compounds (A3, 1023 µg/100 mg vs. A2, 809 µg/100 mg vs. A1, 653 µg/100 mg) and aroma compounds (A3, 775,558 µg/L vs. A2, 125,617 µg/L vs. A1, 12,590 µg/L). This study contributed to the delivery of phenolic and flavour compounds of the mandarin fruits, at the same time minimising waste generation during processing. It also gave insight into the production of spray-dried powders from the whole mandarin fruits.
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Khosravi, Fereshteh, Nahid Rastakhiz, Behzad Iranmanesh, and Seyyed Sina Seyyed Jafari Olia. "Determination of Organic Acids in Fruit juices by UPLC." International Journal of Life Sciences 9, no. 5 (June 14, 2015): 41–44. http://dx.doi.org/10.3126/ijls.v9i5.12690.
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A reversed phase UPLC method for separation and quantification of organic acids (oxalic, citric, tartaric, malic and ascorbic and lactic acids) in fruit juices was developed. The chromatographic separation was performed with a Surveyor Thermo Electron system at 10°C by using a potassium dihydrogen orthophosphate buffer (pH3.1) as mobile phase, an Hypersil Gold a Q Analytical Column and diode array detection at λ=254 nm for ascorbic acid and λ=214 nm for the other organic acids. Organic acid profiles of seven species of fruits: sweet orange, white and red apple, lemon, lime, white and pink grape fruit were established. Species significantly affect the organic acid distribution of fruit juices. In all juices, the most abundant organic acid was citric acid, ranging from 5.22 to 62.42g/l. Fruit juices are good sources of ascorbic acid (0.137-0.625g/l). The average ascorbic acid was the highest in lemon juice followed by sweet orange juice, sweetie and white grapefruit.DOI: http://dx.doi.org/10.3126/ijls.v9i5.12690
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Khosravi, Fereshteh, and Nahid Rastakhiz. "Determination of Oxalic, Citric, Tartaric and Malic Acids in Whole Fruits by UPLC." International Journal of Life Sciences 9, no. 5 (June 14, 2015): 50–53. http://dx.doi.org/10.3126/ijls.v9i5.12692.
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A reversed phase UPLC method for separation and quantification of organic acids (oxalic, citric, tartaric, malic, ascorbic and lactic acids) in fruit juices was developed. The chromatographic separation was performed with a Surveyor Thermo Electron system at 10°C by using a potassium dihydrogen orthophosphate buffer (pH3.1) as mobile phase, an Hypersil Gold a Q Analytical Column and diode array detection at λ=254 nm for ascorbic acid and λ=214 nm for the other organic acids. Organic acid profiles of seven species of fruits: sweet orange, white and red apple, lemon, lime, white and pink grape fruit were established. Species significantly affect the organic acid distribution of fruit juices. In all juices, the most abundant organic acid was citric acid, ranging from 7.41to 85.26mg/gr. Fruit juices are good sources of ascorbic acid (0.05-0.91mg/gr). The average ascorbic acid was the highest in lemon juice followed by sweet orange juice, sweetie and white grapefruit.DOI: http://dx.doi.org/10.3126/ijls.v9i5.12692
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Agarwal, Sanjiv, Victor L. Fulgoni III, and Diane Welland. "Intake of 100% Fruit Juice Is Associated with Improved Diet Quality of Adults: NHANES 2013–2016 Analysis." Nutrients 11, no. 10 (October 18, 2019): 2513. http://dx.doi.org/10.3390/nu11102513.
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Fruit intake is generally associated with better diet quality and overall health. This report examined the effect of 100% fruit juice (considered a part of total fruit servings) and its replacement with whole fruits equivalents on nutrient intake and diet quality. National Health and Nutrition Examination Survey 2013–2016 data (24-h dietary recall) from adults 19+ years (n = 10,112) were used to assess the diet quality and nutrient intakes and to isocalorically replace with 100% fruit juice intakes whole fruit equivalents in a modeling analysis. About 15.6% adults were 100% fruit juice consumers. Consumers had higher diet quality (10% higher Healthy Eating Index, HEI 2015 score), and higher intakes of energy, calcium, magnesium, potassium, vitamin C and vitamin D than non-consumers. Consumption of 100% fruit juice was also associated with lower risk of being overweight/obese (−22%) and having metabolic syndrome (−27%). Replacing 100% fruit juice with whole fruits equivalents did not affect nutrient intake except for a modest increase (+6.4%) in dietary fiber. Results show that 100% fruit juice intake was associated with better diet quality and higher nutrient intake. Replacement of 100% fruit juice intake with whole fruits equivalents had no significant effect on nutrients except for dietary fiber.
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Boycheva, S., T. Dimitrov, N. Naydenova, and G. Mihaylova. "Quality characteristics of yogurt from goat's milk, supplemented with fruit juice." Czech Journal of Food Sciences 29, No. 1 (February 14, 2011): 24–30. http://dx.doi.org/10.17221/171/2008-cjfs.
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Yogurt was prepared from goat's milk, supplemented with aronia juice and blueberry juice. The dynamics of acidification, number of lactic acid bacteria, and fatty acids composition were investigated. Yogurt from goat's milk, supplemented with aronia juice and blueberry juice, coagulated at a lower acidity and faster than natural yogurt. The numbers of lactic acid bacteria in supplemented yogurts were higher compared to control samples. The addition of aronia and blueberry juices increased the amount of unsaturated fatty acids in yogurt by 6.9% and 8.5%, respectively. Polyunsaturated fatty acids increased by 11.2% in yogurt with aronia juice in comparison with natural yogurt.
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JONGBO, Ayoola. "Multipurpose Fruit Juice Machine for Preventing Fruit Wastage in Nigeria Villages." Turkish Journal of Agricultural Engineering Research 2, no. 2 (December 1, 2021): 321–29. http://dx.doi.org/10.46592/turkager.2021.v02i02.006.
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Fruits are produced in large quantities in developing countries because of the favourable climatic conditions but the level of spoilage is high. It is essential to extract and preserve fruit juice to have a regular supply throughout the year. Therefore, it was necessary to develop a machine that could be used to extract juice from several fruits. Thus, the objective of the research work was to develop a multipurpose small scale fruit juice machine that could be adopted by an average farmer in the rural regions to increase their juice intake. A fruit juice extractor was designed, developed and tested. The machine utilised a serrated auger for crushing the fruits before squeezing out the juice. The performance evaluation showed that the machine has an extraction capacity of 88.4 kg h-1 and 84.5 kg h-1 for pineapple and sweet orange respectively. The efficiencies of the juice extractor for pineapple and sweet orange were 91.13% and 85.96% respectively. The average production cost of the machine was estimated as 390 US dollars.
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Smith, Melanie M., Michael Davis, Fred I. Chasalow, and Fima Lifshitz. "Carbohydrate Absorption From Fruit Juice in Young Children." Pediatrics 95, no. 3 (March 1, 1995): 340–44. http://dx.doi.org/10.1542/peds.95.3.340.
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Objective. To compare carbohydrate absorption following ingestion of apple juice and white grape juice in 28 healthy children. Design. Randomized, double-blind crossover study. Setting. Outpatient pediatric clinic at Maimonides Medical Center. Participants. A total of 18 healthy infants (mean age 6.3 months) and 10 toddlers (mean age 18.0 months), representing those ages when juice is first introduced (6 months) and when juice comprises a large portion of the diet (18 months). Methods. Breath hydrogen (H2) testing was performed after age-specific servings of white grape juice or apple juice, 4 and 8 ounces respectively, were consumed. These portions provided approximately 1 g of fructose per kg of body weight. Breath H2 responses of >20 ppm were considered positive, indicating incomplete absorption of fruit juice carbohydrates. Results. In the combined age groups, carbohydrate malabsorption occurred more frequently after apple juice consumption (54%) than after white grape juice (19%; P < .001). Significant differences in area under the breath H2 curve (AUC) were also found between the two juices in both age groups. Among toddlers, the differences between the mean peak breath H2 responses were significant (48 ppm after apple juice consumption compared with 12 ppm after white grape juice; P < .001). These differences were not significant in the infant group. Significant differences (P < .05) were seen between the two age groups after consumption of apple juice; the toddlers exhibited a greater number of positive breath H2 responses and higher peak responses compared with the infants. Data from the children who drank both juices showed significant differences in peak breath H2 responses after consumption of apple juice compared with white grape juice (P < .005). Conclusions. The study demonstrated less carbohydrate malabsorption following ingestion of white grape juice compared with apple juice in healthy 6- and 18- month-old children.
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Fachinan, Rufine, Adnette Fagninou, Magloire Pandoua Nekoua, Abdou Madjid Amoussa, Marius Adjagba, Latifou Lagnika, Anatole Lalèyè, Kabirou Moutairou, and Akadiri Yessoufou. "Evidence of Immunosuppressive and Th2 Immune Polarizing Effects of Antidiabetic Momordica charantia Fruit Juice." BioMed Research International 2017 (2017): 1–13. http://dx.doi.org/10.1155/2017/9478048.
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The mechanism of action of the antidiabetic capacity of Momordica charantia is still under investigation. Here, we assessed phytochemical compositions, antioxidant activity, and effects of total and filtered fruit and leafy stem juices of Momordica charantia on human T cell proliferation and differentiation through quantification of Th1/Th2 cytokines. In the absence of stimulation, total fruit and leafy stem juices induced significant T cell proliferation. Under PHA stimulation, both juices potentiated plant-induced T cell proliferation. However, the filtered fruit and leafy stem juices significantly inhibited PHA-stimulated T cell proliferation, while neither juice influenced T cell proliferation. Moreover, total and filtered fruit juice increased IL-4 secretion, while total and filtered leafy stem juice enhanced IFN-γ production. Phytochemical screening revealed the presence of tannins, flavonoids, anthocyans, steroids, and triterpenoids in both juices. Alkaloids, quinone derivatives, cardenolides, and cyanogenic derivatives were undetectable. The saponins present in total juices were undetectable after filtration. Moreover, both juices had appreciable antioxidant capacity. Our study supports the type 1 antidiabetic effect of filtered fruit juice of M. charantia which may be related to its immunosuppressive and T-helper 2 cell inducing capacities. Due to their immune-stimulatory activities and their ability to increase T-helper 1 cell cytokines, total fruit and leafy stem juices may serve in the treatment of immunodeficiency and certain infections.
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Murphy, Mary M., Leila M. Barraj, Tristin D. Brisbois, and Alison M. Duncan. "Frequency of fruit juice consumption and association with nutrient intakes among Canadians." Nutrition and Health 26, no. 4 (August 12, 2020): 277–83. http://dx.doi.org/10.1177/0260106020944299.
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Background: In Canada, studies on consumption of 100% fruit juice and nutrient intakes are limited. Aim: This study aimed to evaluate nutrient intakes and adequacy of intake by frequency of fruit juice consumption. Methods: Individuals ≥1 year ( n = 34,351) participating in the Canadian Community Health Survey, 2004 with a 24-hour dietary recall and reported usual frequency of fruit juice consumption (assumed to be 100% juice) were categorized by frequency of consumption as <0.5, ≥0.5 to <1.5, or ≥1.5 times/day. Results: More frequent consumption of fruit juice (≥0.5 times/day) was associated with higher intakes of total fruits and vegetables, whole fruits, energy, total sugars, vitamin C and potassium. More frequent consumption of fruit juice was associated with improved intake adequacy of vitamin C for adults. Conclusions: Fruit juice consumption contributes to increased intakes of vitamin C and potassium as well as energy and total sugars, thus presenting a trade-off for consumers to balance.
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Conidi, Carmela, Roberto Castro-Muñoz, and Alfredo Cassano. "Membrane-Based Operations in the Fruit Juice Processing Industry: A Review." Beverages 6, no. 1 (March 16, 2020): 18. http://dx.doi.org/10.3390/beverages6010018.
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The fruit juice industry is one of the food sectors that has invested the most in the implementation of new technologies, such as non-thermal technologies. Among them, membrane processes are considered today well-established separation techniques to support the production and marketing of innovative fruit juices designed to exploit the sensory characteristics and nutritional peculiarities of fresh fruits. Pressure-driven membrane operations, membrane distillation, osmotic distillation and pervaporation have been widely investigated in the last few decades to replace conventional technologies used in fruit juice processing industry (i.e., clarification, stabilization, concentration and recovery of aroma compounds). This paper will review the significant progresses on the use of membrane-based operations in fruit juice processing industry in the light of the growing interest towards products with improved safety, quality and nutritional value and sustainable processes characterized by low energy consumption and low environmental impact.
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Mengistu, Dechasa Adare, Yohannes Mulugeta, Dinku Mekbib, Negga Baraki, and Tesfaye Gobena. "Bacteriological Quality of Locally Prepared Fresh Fruit Juice Sold in Juice Houses of Eastern Ethiopia." Environmental Health Insights 16 (January 2022): 117863022110729. http://dx.doi.org/10.1177/11786302211072949.
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Background: Currently, fresh fruit juices are widely consumed as a drink worldwide due to their nutritional values and health benefits. Fresh fruit juices are an important source of nutrients, vitamins, and fibers that are important for human health. Fruit juices are nutritious and perishable food that can serve as an ideal medium for the growth and multiplication of pathogenic microorganisms. Therefore, this study aimed to determine the bacteriological quality of locally prepared fresh fruit juices sold in juice houses of eastern Ethiopia from 4 April to 12 June 2020. Methods: A cross-sectional study was used that included administrative questionnaires and laboratory-based investigations. A total of 78 fruit juice samples that include mango, avocado, papaya, and mixed juices were collected aseptically from the juice houses. The most probable number method was used to determine the total coliform, fecal coliform and Escherichia coli. The pour plate count method was used to determine the total viable bacteria count. Finally, data were analyzed using descriptive statistical tests that included analysis of variance, Chi-square and Fisher’s exact tests. A P-value of .05 was considered as a cut-off point for statistical significance. Results: Among the 78 juice samples analyzed, 85.9% of the samples had total viable bacterial count, 64.1% had total coliform count, 60.3% had fecal coliform, and 33.3% of the samples had Escherichia coli higher than the maximum permitted level of Gulf standard 2000. The study found a significant association between bacterial contamination and educational status (χ2 = 31.663), training in food hygiene and safety (χ2 = 23.04), method of fruit preservation (χ2 = 17.98), place to keep the juice (χ2 = 13.7), action done with the juice gone bad (χ2 = 12.78), frequency of cleaning materials used to keep the juice (χ2 = 12.78), type of dish washing (χ2 = 19.75), availability of hand washing equipment (χ2 = 12.78), and types of waste receptacles (χ2 = 26.25) ( P-value <.05) (Table 5). Conclusion: In general, majority of fruit juice samples were contaminated with one or more different bacteria species higher than the maximum permitted level. Furthermore, the study found the association between bacterial contamination and other variables such as hygienic and safety conditions. Therefore, the implementation of adequate hygiene and safety practices is very important to prevent the consumption of contaminated fruit juices, which leads to foodborne illness.
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Levey, Douglas J. "Sugar-Tasting Ability and Fruit Selection in Tropical Fruit-Eating Birds." Auk 104, no. 2 (April 1, 1987): 173–79. http://dx.doi.org/10.1093/auk/104.2.173.
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Abstract The sugar-tasting abilities of four species of tanagers and two species of manakins were tested. Three tanager species were able to detect differences in diets containing 8%, 10%, and 12% sugar. In pairwise choice trials, they preferred the diet highest in sugar. Neither species of manakin discriminated among the three diets. This apparent difference in tasting abilities of tanagers and manakins may be a result of their fruit-handling techniques. Tanagers crush fruits in their bills, thereby releasing juices onto their tongues. Manakins swallow fruits whole; their tongues rarely encounter fruit juice. Hence, manakins' fruit-handling technique is poorly suited for sensing the taste cues in fruit juices. Variation in fruit sugar concentration is common within and among plant species and is great enough to be detected by birds. Birds probably have selected for sweeter fruits.
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OVIASOGIE, F. E., and G. U. IGHODARO. "THE BACTERIOLOGY OF SELECTED PACKED FRUIT JUICES MARKETED IN BENIN CITY, EDO STATE, NIGERIA." Nigerian Journal of Life Sciences (ISSN: 2276-7029) 3, no. 1 (March 15, 2022): 187–98. http://dx.doi.org/10.52417/njls.v3i1.122.
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Microbiological studies were carried out on 4 selected samples of packed fruit juices namely Dansa Classic Pineapple juice (P1), 5 alive citrus juice (P2), Chivita active juice (P3) and frutta natural apple juice (P4). These were cultured on various media; Mac Conkey agar, Blood agar, Mannitol salt agar and Nutrient agar. Biochemical tests and Gram staining were further employed for proper identification of isolates. Bacterial counts from each fruit juices were carried out at 4oC and room temperature (28oC) after 2 days intervals within a period of 12 days. There were no growth from the juice samples between days 0 and 9. However, Staphyloccocus aureus and Bacillus subtilis were isolated from the pineapple juice. These isolates were further subjected to antibiotic susceptibility tests using agar diffusion method. Both isolates were sensitive to Rocephin, Perfloxacin, Cyprofloxacin, Streptomycin, and Erythromycin. Growth in pineapple juice at day 12 likely resulted from contamination during storage and sampling. We conclude that the studies that fruit juices marketed in Benin City were especially sterile and suitable for human consumption
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Trappey, Alfred F., and Charles E. Johnson. "(377) Consumer Acceptance of Mayhaw (Crataegus opca Hook. and Arn.) Fruit Juice Blended with Muscadine (Vitisrotundifolia Michx.) Grape Juice." HortScience 40, no. 4 (July 2005): 1068A—1068. http://dx.doi.org/10.21273/hortsci.40.4.1068a.
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Growth in juice-based products is supported by an increasing consumer base, which perceives fruit and fruit-based beverages as an integral component of nutritious food types that can benefit health. New flavor combinations, as well as added ingredients (i.e., vitamins) continue to help boost juice appeal as a nutraceutical. New juice-based food products such as blends, jellies, marinades, and pastry fillings could benefit from the unique flavor attributes specific to mayhaw fruit juice. Juice from one cultivar of muscadine grape (Vitisrotundifolia Michx.) `Carlos' (bronze skinned) was mixed with varying levels of juice from one cultivar of mayhaw (Crataegusopaca) `Texas Star' (reddish-orange skinned) fruit. Five different blend combinations were tested for both individual juice quality and for juice-blend compatibility. A consumer preference test was conducted (n = 75) on a 9-point hedonic scale for color, taste, and overall liking. Next to the taste/flavor preference scores for control (6.8), mayhaw juice used as the primary flavor ingredient in blends was the second most preferred of all juices by the panelists. A 50/50 juice blend and 70/30 mayhaw/muscadine blend were the least desirable of the five combinations tested. Juices from 60/40, 30/70, and 40/60 mayhaw/muscadine were considered by the panelists as best in flavor and overall acceptability. “Taste” had the strongest effect on overall acceptability of juice from varying levels of mayhaw juice in combination with muscadine grape juice. Panelists' mean score averages collectively were favorable of 60:40 and 50:50 juice blends and were significant (P < 0.05) toward acceptance of a “mayhaw-muscadine” fruit juice blended drink.
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McGuire, Christopher M. "Field Performance and Phenotypic Variation of Passiflora incarnata L. in New York State." HortScience 33, no. 2 (April 1998): 240–41. http://dx.doi.org/10.21273/hortsci.33.2.240.
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Passiflora incarnata L., a perennial vine native to southeastern North America, bears fruit containing an edible juice. I observed the growth, flowering, fruit yield, and fruit traits of P. incarnata plants grown in the field for one season in Ithaca, N.Y. Plants flowered throughout the summer and were pollinated by carpenter bees, but fruit set was low without additional hand-pollination. Fruits set before mid-August matured in 52 to 113 days, but fruits set after mid-August usually failed to mature. Following hand-pollination of some flowers, plants matured 0 to 14 fruits, and yield of edible juice was 5 to 10 mL per fruit. Vegetative growth, plant architecture, number of flowers produced, number of fruits matured, days from flower opening to fruit maturity, fruit size, the proportion of fruits filled with juice and seeds, and the size of juice-containing arils all varied greatly among plants. Part of this variation was probably genetic.
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Mengistu, Dechasa Adare, Negga Baraki, and Tesfaye Gobena Tesema. "Pathogenic Bacterial Species in Locally Prepared Fresh Fruit Juices Sold in Juice Houses of Eastern Ethiopia." Microbiology Insights 14 (January 2021): 117863612110607. http://dx.doi.org/10.1177/11786361211060736.
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Fruit juices are important components of a healthy diet and a dietary source of nutrients, vitamins, and fiber and vital for human health. However, unless it is handled with safety and hygienic conditions, food can be a vehicle for the transmission of various agents of diseases resulting in food borne outbreaks. Thus, this study aimed to determine common pathogenic bacterial species in locally prepared fresh fruit juices sold in juice houses of Eastern Ethiopia. A cross-sectional study design was conducted from 1 January to 27 March 2020, in eastern Ethiopia. Seventy-eight juice samples were collected aseptically using a sterilized collecting jar from each juice house. Pour plate count method was used to determine Staphylococcus, Salmonella, and Shigella species. Finally, the data were analyzed using descriptive statistical tests such as Chi-square and Fisher’s exact tests. P-value of .05 was considered as a cut point for statistical significance. The study found Staphylococcus count ranged from 1.68 log CFU/mL with the mean value of 4.204 log CFU/mL. Overall, 58 (74.4%) of the fruit juice samples had Staphylococcus count, 19 (24.4%) had Salmonella and 12 (15.4%) had Shigella higher than the maximum permitted limit of Gulf standard, 2000 set for any type of fruit juice. In general, the study found more than two-thirds of fruit juice samples had at least 1 pathogenic bacteria species higher than the maximum permitted limit and potentially hazardous to consumer health. Thus, regular supervision and application of food hygiene and safety are essential to improve the quality of fruit juice and to prevent the consumption of contaminated fruit juices, which leads to food borne illness.
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Ghinea, Cristina, Ancuta Elena Prisacaru, and Ana Leahu. "Physico-chemical and sensory quality of pasteurized apple juices extracted by blender and cold pressing juicer." Ovidius University Annals of Chemistry 33, no. 1 (January 1, 2022): 84–93. http://dx.doi.org/10.2478/auoc-2022-0012.
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Abstract Worldwide, one of the most consumed fruit juices is apple juice, preferred by both adults and children due to its authentic taste, but also due to its nutritional and health benefits. Apple juice contains sugars, malic acid, soluble pectin, vitamin C, phytochemicals and minerals. The production process influences the juice composition. There is a growing market for natural cloudy apple juice, even though fruit juice is mostly consumed as clear juice. The aim of this study was to obtain cloudy apple juice by using a blender and a cold pressing juicer for extraction and to evaluate their physico-chemical and sensory qualities. The apple juice samples were obtained from three different apple cultivars: “Gala”, “Braeburn” and “Golden Delicious”. After extraction, apple juice samples were pasteurized and cooled. In this study, physico-chemical analyzes (like moisture, water activity, pH, titratable acidity, total soluble solids, electrical conductivity, color parameters) were performed immediately after processing and at 7, 14, 21 days of storage at room temperature. The results showed that the investigated parameters of the apple juice samples varied differently depending on both the apple cultivar and the processing method used. Sensory analysis showed that certain types of apples can be suitable for extracting juice using a blender (“Golden Delicious”), while others such as “Gala” apples can be used to obtain juice by cold pressing.
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Li, Jiaxiu, Chunling Zhang, Hui Liu, Jiechao Liu, and Zhonggao Jiao. "Profiles of Sugar and Organic Acid of Fruit Juices: A Comparative Study and Implication for Authentication." Journal of Food Quality 2020 (August 28, 2020): 1–11. http://dx.doi.org/10.1155/2020/7236534.
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A comparison of sugar and organic acid profiles among different fruit juices (including apple, pear, peach, grape, sweet cherry, strawberry, and blueberry with various varieties) was performed to assess the possibility for authentication coupled with chemometrics. It was found that the distribution of each sugar and organic acid in juices showed some specific characteristics related to fruit species, despite the fact that great differences in the content existed among different varieties. Sucrose was the most abundant sugar in peach juice, accounting for 58.26–77.11% of the total sugar content. However, in grape, blueberry, and sweet cherry juice, glucose and fructose were the predominant sugars. Pear juice contained the highest level of sorbitol, which contributed to 15.02–43.07% of the total sugar content. Tartaric acid was detected only in grape juice among the seven species of fruit juice, with a proportion of 57.95–89.68% in the total acid content. Malic acid was the predominant organic acid in apple and sweet cherry juice, accounting for 69.92–88.30% and 97.51–98.73% of the total acid content of each species. Citric acid was the predominant organic acid in strawberry and blueberry juice, which contributed to 62.39–83.73% and 73.36–89.56% of the total acid content of each species. With the aid of principal component analysis and linear discriminant analysis (LDA), the juice samples could be successfully classified according to fruit species by using the sugar and/or organic acid composition as analytical data. Combination of sugar and organic acid composition gave the best differentiation of these seven species of juices, with a 100% correct classification rate for both the original and the cross-validation method in LDA. Adding malic/citric into the dataset of the organic acid content may also improve the differentiation effect. Furthermore, the adulteration of sweet cherry juice, blueberry juice, raspberry juice, and grape juice with apple juice, pear juice, or peach juice could also be distinguished from their corresponding pure juices based on sugar and organic acid composition by LDA.
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Perestrelo, Rosa, Catarina Silva, Pedro Silva, Sonia Medina, and José Câmara. "Differentiation of Fresh and Processed Fruit Juices Using Volatile Composition." Molecules 24, no. 5 (March 10, 2019): 974. http://dx.doi.org/10.3390/molecules24050974.
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In the current study, a comprehensive approach based on headspace solid-phase microextraction (HS-SPME), combined with gas chromatography-quadrupole mass spectrometry (GC-qMS), was used to establish the volatile signature of fresh and processed fruit juices, obtained from the same batch of grapes, red fruits, orange, pear, and apple. This is a powerful tool for evaluating the impact of the production process on the volatomic pattern of fruit juice. A total of 169 volatile organic compounds (VOCs) belonging to different chemical groups were identified. Esters, carbonyl compounds, terpenoids, and alcohols are the major chemical groups in the investigated fruit juices. However, their contribution to the total volatile profile varied. Special attention should be paid to processed fruit juices to avoid the possible deleterious effects associated with the formation of furanic compounds (e.g., heat treatment), since their furanic content was significantly higher in comparison to that of fresh fruit juices. The knowledge obtained in the current study will allow for the introduction of modifications to the process involved in processing juice, which will improve the organoleptic characteristics of processed juices, contributing to a better acceptance by consumers. Furthermore, more assays should be performed to assess the effect of harvests, geography, and agronomy on the volatile profile of juices.
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Mgaya Kilima, B., SF Remberg, BE Chove, and T. Wicklund. "Physio-chemical, mineral composition and antioxidant properties of roselle (Hibiscus sabdariffa L.) extract blended with tropical fruit juices." African Journal of Food, Agriculture, Nutrition and Development 14, no. 63 (May 28, 2014): 8963–78. http://dx.doi.org/10.18697/ajfand.63.13475.
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Different varieties of fruit juices and beverages are available globally and there has been an increased consumption of fruit juices and beverages due to consumer awareness of nutritional and health benefits. Juice extracts are produced from various parts of plants including leaves, fruits a nd flowers. Hibiscus sabdiriffa (Roselle) is one such plant whose flowers are used to prepare juices. The roselle extract has a unique red colour, good flavour, low sugar and high acidic content . The acidity makes the juice sour hence the need for addition of sweetening products. A study was conducted on the formulation of roselle extract -tropical fruit blends aimed at establishing its physiochemical, mineral and antioxidant composition. Dried roselle calyces at a ratio of 1:10 (dried roselle calyces: water ) were extracted at 50 o C for 30 minutes. The roselle extracts were blended at various proportions of fruit (mango, papaya and guava) juices. Physiochemical, mineral composition and antioxidant properties were evaluated in all the roselle fruit juice blends The results for all roselle - fruit blends (80% roselle to 20% roselle) showed that pH ranged between (2.35- 3.32), total soluble solids (5.6- 10.6 o Brix ), titratable acidity (1.28 -1.92 % ), reducing sugars (2.95- 5.55) mg/100g,. Calcium (555.3- 23.4 mg/100g DM ), Magnesium (213.8- 11.5 mg/100g DM ), Phosphorus (39.8- 9.0 mg/100g DM ), Sodium (2.3- 5.47 mg/100g DM ), Zinc (5.85- 0.69 mg/100g DM ), Iron (29.5 -1.36 mg/100g DM ), monomeric anthocyanin (493.5 -118.2 mg cyanidin- 3- glucoside/100g ), vitamin C (40.0- 86.5 mg/100g ), total phenol (54.6- 10.8 mg gallic acid/ 100 g ) and antioxidant activity (1.80- 1.37 mmol/L ). Blending of tropical fruit juices with roselle extract have improved mineral composition and antioxidant properties of fruit juices as roselle is a good source of calcium, magnesium and iron. Antioxidants acts as free radical scavengers inhibit lipid peroxidation and other free radical mediated process, therefore, consumption of roselle -fruit juices with high anthocyanin will protect human body from several diseases attributed to the reactions of free radicals.
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Morelli, Rosanna, Carmela Conidi, Rosa Tundis, Monica R. Loizzo, Massimo D’Avella, Rosario Timpone, and Alfredo Cassano. "Production of High-Quality Red Fruit Juices by Athermal Membrane Processes." Molecules 27, no. 21 (November 1, 2022): 7435. http://dx.doi.org/10.3390/molecules27217435.
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Membrane-based processes are increasingly used to clarify and concentrate thermo-sensitive fruit juices and plant extracts as alternatives to conventional processes. This work aimed to evaluate the quality of red fruit juices clarified and concentrated by an integrated membrane process with special regard to the preservation of valuable compounds. A red fruit juice obtained from a blend of pomegranate, cactus pear, and red orange juices of Sicilian origin was clarified by microfiltration (MF) and then pre-concentrated up to 33 °Brix by nanofiltration (NF). The pre-concentrated juice was finally concentrated by osmotic distillation (OD) up to 50 and 60 °Brix. Samples of clarified, pre-concentrated, and concentrated juice were analyzed for their physico-chemical composition and in terms of the antioxidant activity and inhibitory activity against α-amylase and lipase. The results clearly confirmed the assumption of a mild fruit juice processing method, allowing us to preserve the original nutritional and functional properties of the fresh juice. In particular, the OD retentate at 60 °Brix resulted the most active sample against pancreatic lipase and α-amylase inhibitory activity with IC50 values of 44.36 and 214.65 μg/mL, respectively.
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Barghouthy, Yazeed, and Bhaskar K. Somani. "Role of Citrus Fruit Juices in Prevention of Kidney Stone Disease (KSD): A Narrative Review." Nutrients 13, no. 11 (November 17, 2021): 4117. http://dx.doi.org/10.3390/nu13114117.
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To explore the relationship between citrus fruit juices (oranges, grapefruits, and lemonades) and kidney stone disease (KSD). Methods: A systematic review was performed using the Medline, EMBASE, and Scopus databases, in concordance with the PRISMA checklist for all English, French, and Spanish language studies regarding the consumption of citrus fruit juices and the relationship to urinary stone disease. The main outcome of interest was the association of citrus fruit juices with KSD. Results: Thirteen articles met the criteria for inclusion in the final review. Three large epidemiological studies found that grapefruit juice was a risk factor for stone formation, while orange juice did not increase the risk for KSD. Ten small prospective clinical studies found that orange, grapefruit, and lemon juices all increased urinary citrate levels. Only orange and grapefruit juices had an alkalinizing effect and while lemon juice has a protective effect by raising urinary citrate levels, it lacked a significant alkalinizing effect on urine pH. Orange juice and grapefruit juices significantly increased urinary oxalate levels, while orange juice also had a high carbohydrate content. Conclusion: While orange juice seems to play a protective role against stone formation, grapefruit was found to raise the risk of KSD in epidemiological studies but had a protective role in smaller clinical studies. Lemon juice had a smaller protective role than orange juice. Larger amounts of, as well as more accurate, data is needed before recommendations can be made and a high carbohydrate content in these juices needs to be taken into consideration.
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Khairiyah, Siti, Siti Morin Sinaga, and Effendy De Putra. "Determination Of Vitamin C And Antioxidant Activity In Fresh Red Guava (Psidium Guajava L.) And Red Guava Commercial Fruit Juices." International Journal of Science, Technology & Management 3, no. 4 (July 17, 2022): 880–83. http://dx.doi.org/10.46729/ijstm.v3i4.543.
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Red guava (Psidium guajava L.) has various benefits such as overcoming digestive disorders, thrush and dengue fever and can be used for anticancer herbal therapy. Red guava fruit is a fruit with the highest levels of vitamin C compared to other fruits. It contains carotenoid compounds and phenolic compounds that act as antioxidants. Red guava fruit is often processed into fruit juice drinks that are packaged in various types of packaging and distributed commercially so that people can consume red guava fruit more efficiently. Determination of vitamin C levels using the UV-Visible spectrophotometric method and the results obtained that the vitamin C content of red guava commercial fruit juice is higher than fresh red guava juice. Measurement of antioxidant activity of red guava fruit and its commercial fruit juice using ABTS methods. The results obtained in the ABTS method, fresh red guava juice and its commercial fruit juice have very strong antioxidant activity (IC50 < 50 µg/mL).
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Nowak, Dariusz, Michał Gośliński, Krzysztof Przygoński, and Elżbieta Wojtowicz. "Averrhoa carambola L., Cyphomandra betacea, Myrciaria dubia as a Source of Bioactive Compounds of Antioxidant Properties." Foods 12, no. 4 (February 9, 2023): 753. http://dx.doi.org/10.3390/foods12040753.
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Natural bioactive compounds play an important role in the prevention of various diseases. The exotic fruits Averrhoa carambola L. (star fruit), Cyphomandra betacea (tamarillo) and Myrciaria dubia (camu-camu) can be valuable sources of phytochemicals with antioxidant properties. The aim of this study has been to compare the antioxidant properties of these exotic fruits, the structure of polyphenolic compounds and the content of vitamin C and β-carotene. All the juices were analyzed for their antioxidant capacity (DPPH and ABTS assays) and the composition of phenolic compounds (TP and FBBB assays, total flavonoid content, total anthocyanins). In addition, HPLC assays were performed to analyse the content of phenolic acids, flavonoids, vitamin C and β-carotene. The results demonstrated that juice from the Myrciaria dubia fruit had the highest antioxidant capacity, which was 4.5-fold higher than that of juice from Averrhola carambola L., and nearly 7-fold higher than the antioxidant capacity of Cyphomandra betacea fruit juice. Additionally, juice from the camu-camu fruit had a 3- to 4-fold higher total polyphenol content (8290 ± 254 mg GAE L−1) and a high level of vitamin C (8410.8 ± 16.9 mg AA kg−1). In turn, tamarillo juice had a high content of total anthocyanins (5796 mg CGE L−1) and phenolic acids (mostly chlorogenic acid and caffeic acid). Juice produced from carambola had a high content of total flavonoids (1345 mg CAE L−1), and the composition of these compounds was dominated by flavanols (epicatechin). The research results justify the conclusion that fruits of Myrciaria dubia, Averrhoa carambola L., Cyphomandra betacea are rich sources of bioactive compounds with antioxidant properties, and in the near future may serve as healthful food ingredients.
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LEONG, YAP KOK, ONG CHIAW XUI, and ONG KIEN CHIA. "Survival of SA11 Rotavirus in Fresh Fruit Juices of Pineapple, Papaya, and Honeydew Melon." Journal of Food Protection 71, no. 5 (May 1, 2008): 1035–37. http://dx.doi.org/10.4315/0362-028x-71.5.1035.
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Survival of rotavirus in fresh fruit juices of papaya (Caraca papaya L.), honeydew melon (Cucumis melo L.), and pineapple (Ananas comosus [L.] Merr.) was studied. Clarified juices were prepared from pulps of ripe fruits and sterilized by ultrafiltration. One milliliter of juice from each fruit was inoculated with 20 μlof 1 × 106 PFU of SA11 rotavirus and sampled immediately (0-h exposure) and 1 and 3 h later at 28°C. Mean viral titers in juices of papaya (pH 5.1) and honeydew melon (pH 6.3) at 1 and 3 h were not significantly different from titers at 0-h exposure. Mean viral titers in juices from pineapples with ripening color indices of 3 (pH 3.6) and 6 (pH 3.7) at 1-h exposure (color index 3: 4.0 ± 1.7 × 104; color index 6: 2.3 ± 0.3 × 105) and 3-h exposure (color index 3: 1.1 ± 0.4 × 104; color index 6: 1.3 ± 0.6 × 105) were significantly lower than titers at 0-h exposure (color index 3: 5.7 ± 2.9 × 105; color index 6: 7.4 ± 1.3 × 105). Virus titers in pineapple juices of color index 3 were significantly lower than titers of the virus in juices of index 6. In cell culture medium (pH 7.4), SA11 titer remained stable over 3 h at 28°C. However, at pH 3.6, the virus titer was reduced to a level not significantly different from that of the virus in pineapple juice of color index 6 (pH 3.7). In conclusion, papaya and honeydew melon juices, in contrast to pineapple juice, have the potential to transmit rotavirus. Inactivation of SA11 virus in pineapple juice can be possibly attributed to low pH and constituent(s) in the juice.
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Inam, AKMS, MM Hossain, AA Siddiqui, and M. Easdani. "Studies on the Development of Mixed Fruit Marmalade." Journal of Environmental Science and Natural Resources 5, no. 2 (April 30, 2013): 315–22. http://dx.doi.org/10.3329/jesnr.v5i2.14836.
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This study reports on processing of mixed fruit marmalades from malta, mango and pineapple juices at different ratios. Sensory attributes and storage studies of the mixed fruit marmalades were also evaluated. The fresh and fully mature fruits were used for this experiment. Chemical characteristics such as moisture, ash, acidity, pH, vitamin C, sugar and total soluble solids (TSS) of fruit juices and mixed fruit marmalades were determined. Variations in chemical constituents were observed among the juice and marmalade samples. S1 sample was found best of all samples with respect to chemical composition. The analysis of chemical composition of S1 sample (malta juice: mango juice: pine-apple juice=2:1:1) was found as: moisture 27.71%, ash 0.16%, TSS 67.5%, total sugar 66.2%, acidity 0.90% and pH 2.8. On the basis of sensory evaluation the S1 sample was the most acceptable among others in terms of color, flavor, texture and overall acceptability. Storage study was conducted on the mixed fruit marmalades for six months at room temperature (23-30°C) and relative humidity 80 to 85%. It was observed that TSS, pH and acidity of mixed fruit marmalades did not show any remarkable changes. Color and flavor were acceptable throughout six months of storage period. After six month of storage period small amount of mould and bacterial attack was observed in marmalade samples. The microbial count was low due to high acidity and proper storage of the samples. The microbial contamination was very low in sample S1 than other samples due to its highest acidity.DOI: http://dx.doi.org/10.3329/jesnr.v5i2.14836 J. Environ. Sci. & Natural Resources, 5(2): 315-322 2012
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Bai, Jinhe, Erin N. Rosskopf, Kristen A. Jeffries, Wei Zhao, and Anne Plotto. "Soil Amendment and Storage Effect the Quality of Winter Melons (Benincasa hispida (Thunb) Cogn.) and Their Juice." Foods 12, no. 1 (January 3, 2023): 209. http://dx.doi.org/10.3390/foods12010209.
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Winter melon fruits were grown in the field using anaerobic soil disinfestation (ASD) and conventional fertilizer alone as the control treatment. Fruits were harvested and stored at 20 °C for 120 d, the juice was processed on day one and day 120, and the effects of soil amendment and 120 d storage on the juice’s physical and chemical (sugars, acids, volatile and nutritional compounds) properties were evaluated. Fruit juice extracted from ASD-grown fruit had greater magnitude of zeta potential than the control juice, indicating it was physically more stable than the juice obtained from the control conditions. ASD fruit juice had lower soluble solids content (SSC), and lower volatile compounds that contribute green, grass, and sulfur notes, and negatively influence flavor quality. ASD fruit juice had higher vitamin B5 and cytidine. Juice processed from 120 d stored fruit had less yield due to 12.4–15.6% weight loss. The non-soluble solids content was higher and particle size was larger, and the SSC and individual sugars decreased. However, titratable acidity (TA) increased primarily due to increased citric acid. Out of 16 free amino acids, 6 increased and only 1 decreased. However, three out of five nucleosides decreased; vitamins B1 and B6 increased; vitamins B2, B3 and C decreased. Overall, juice derived from fruit produced using ASD was physically more stable and had less SSC and off-odor volatiles than the control, while the fruit juice of those stored for 120 d had lower SSC and higher TA and nutritional profiles, comparable to freshly harvested fruit.
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Sharma, Neha, Kamalpreet Singh, Devinder Toor, Somnath S. Pai, Rishika Chakraborty, and Khalid M. Khan. "Antibiotic Resistance in Microbes from Street Fruit Drinks and Hygiene Behavior of the Vendors in Delhi, India." International Journal of Environmental Research and Public Health 17, no. 13 (July 4, 2020): 4829. http://dx.doi.org/10.3390/ijerph17134829.
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Microbial contamination of fruit juices has caused major outbreaks, leading to significant morbidity and mortality in developing countries. The inept hygiene and safety practices followed by the juice vendors are the leading risk factors of the microbial contamination of juices. In this pilot study, the five most crowded markets in urban Delhi, including Kamla Nagar, University of Delhi (north campus), Tilak Nagar, Chandni Chowk, and Rohini, were selected for a questionnaire survey on the fruit juice vendors and the sampling of water used for juice preparation as well as sugarcane, orange, and mix fruit juices collected from these markets for the enumeration of total bacterial count (TBC), Escherichia coli, Salmonella, and Vibrio. Antibiotic susceptibility tests were performed using ampicillin, cefotaxime, chloramphenicol, ciprofloxacin, and imipenem. The results indicated that the majority of the vendors were not following hygiene and safety practices when compared with the recommended standard safety practices. The use of municipal water by 95% of vendors with high TBC counts might have been the major source of microbial contamination in all types of fruit juices. E. coli and Salmonella contaminations were high in sugarcane (2 × 105 colony forming units (CFU)/mL) and mix fruit (2.2 × 105 CFU/mL) juice samples, respectively. On the other hand, Vibrio was found to be absent in almost all juice samples except for orange juice. All strains were found to be susceptible to chloramphenicol, but resistant to ampicillin and cefotaxime. Only a few strains were resistant to ciprofloxacin, and only E. coli strains were resistant to imipenem. Taken together, the overall microbiological standards of fruit juices served by street vendors were not within the acceptable limits, perhaps due to the poor quality of water used to prepare juices and poor hygiene and safety practices followed by the vendors. More importantly, the isolated microbes demonstrated resistance to ampicillin and cefotaxime, which may have pressing public health implications. Post hoc power analyses identified the minimum sample size required for 80% power.
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Grobelna, Kalisz, and Kieliszek. "The Effect of the Addition of Blue Honeysuckle Berry Juice to Apple Juice on the Selected Quality Characteristics, Anthocyanin Stability, and Antioxidant Properties." Biomolecules 9, no. 11 (November 17, 2019): 744. http://dx.doi.org/10.3390/biom9110744.
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Apple juice is rich in phenolic compounds that are important as natural antioxidants. In turn, blue honeysuckle berry juice is a valuable source of bioactive ingredients and can be an interesting and beneficial supplement to fruit juices. The aim of this study was to examine the physicochemical and sensory properties of the newly designed mixture of apple juice and blue honeysuckle berry juice. The addition of blue honeysuckle berry juice to apple juice had a significant effect on the content of anthocyanin and vitamin C in the newly designed fruit juices. After production, the content of anthocyanins and polyphenols in the blue honeysuckle berry juice was high (595.39 and 767.88 mg/100 mL, respectively). As the concentration of blue honeysuckle berry juice added to apple juice was increased, the polyphenol content also increased. The juices analyzed after 4 months of storage were lighter and showed a less intense red color than the juices analyzed directly after production. Antioxidant activity (ABTS assay) in the apple juice mixed with 10% blueberry juice was almost 3 times higher than the pure apple juice after 3 months of storage; the addition of 30% blueberry juice significantly increased the antioxidant activity of the apple juice. Thus, the results of this research have expanded the existing knowledge about the health and sensory properties of apple juice mixed with blue honeysuckle berry juice. These findings can be utilized in further research aiming at the development of new products that can meet consumer expectations.
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Ballot, D., R. D. Baynes, T. H. Bothwell, M. Gillooly, J. Macfarlane, A. P. Macphail, G. Lyons, et al. "The effects of fruit juices and fruits on the absorption of iron from a rice meal." British Journal of Nutrition 57, no. 3 (May 1987): 331–43. http://dx.doi.org/10.1079/bjn19870041.
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1. The effects of the chemical composition of fruit juices and fruit on the absorption of iron from a rice (Oryza sativa) meal were measured in 234 parous Indian women, using the erythrocyte utilization of radioactive Fe method.2. The corrected geometric mean Fe absorptions with different juices varied between 0.040 and 0.129, with the variation correlating closely with the ascorbic acid contents of the juices (rs 0.838, P < 0.01).3. Ascorbic acid was not the only organic acid responsible for the promoting effects of citrus fruit juices on Fe absorption. Fe absorption from laboratory ‘orange juice’ (100 ml water, 33 mg ascorbic acid and 750 mg citric acid) was significantly better than that from 100 ml water and 33 mg ascorbic acid alone (0.097 and 0.059 respectively), while Fe absorption from 100 ml orange juice (28 mg ascorbic acid) was better than that from 100 ml water containing the same amount of ascorbic acid (0.139 and 0.098 respectively). Finally, Fe absorption from laboratory ‘lemon juice’ (100 ml orange juice and 4 g citric acid) was significantly better than that from 100 ml orange juice (0.226 and 0,166 respectively).4. The corrected geometric mean Fe absorption from the rice meal was 0.025. Several fruits had little or no effect on Fe absorption from the meal (0.013–0.024). These included grape (Vitis vinifera), peach (Prunuspersica), apple (Malus sylvestris) and avocado pear (Persea americana). Fruit with a mild to moderate enhancing effect on Fe absorption (0.03 1–0.088) included strawberry (Fragaria sp.) (uncorrected values), plum (Prunus domestica), rhubarb (Rheum rhaponticum), banana (Musa cavendishii), mango (Mangifera indica), pear (Pyrus cornmunis), cantaloup (Cucumis melo) and pineapple (Ananas comosus) (uncorrected values). Guava (Psidium guajava) and pawpaw (Carica papaya) markedly increased Fe absorption (0.126–0.293).5. There was a close correlation between Fe absorption and the ascorbic acid content of the fruits tested (rs 0.738, P < 0.0001). There was also a weaker but significant correlation with the citric acid content (rs 0.55, P < 0.03). Although this may have reflected a direct effect of citric acid on Fe absorption, it should be noted that fruits containing citric acid also contained ascorbic acid (rs 0.70, P < 0.002). Similarly, the negative correlation (rs –0.62, P < 0,008) between Fe absorption and the malic acid content of fruits may have been due to the fact that fruits with a high malic acid content tended to have low levels of ascorbic acid (rs–0.45, P < 0.06).6. These various results suggested that most fruits have only a limited effect on overall Fe nutrition. However, the presence of citrus fruit, guava or pawpaw would be expected to increase Fe absorption markedly from diets of low Fe availability.
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Weleni, Diriba Leta, and Shilimat Abera. "ASSESSMENT ON BACTERIAL LOAD OF READY TO USE FRUIT JUICES SERVED IN CAFES AND JUICE BARS IN HOSSANA TOWN, SOUTHERN ETHIOP." EPH - International Journal of Biological & Pharmaceutical Science 2, no. 1 (December 15, 2016): 58–63. http://dx.doi.org/10.53555/eijbps.v2i1.17.
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Contaminated food and drinks are source of various food borne diseases in human. The study aimed on the assessment of bacterial load of locally prepared fruit juice. A cross sectional study was conducted from January 2015 to May 2015in Hossana town. Out of Twenty four fruit juice samples, eight samples from each of avocado, papaya and mango were collected at two different time intervals accordingly. The pH of original samples was determined before dilution. Streak plate method was used for the growth of bacteria on appropriate media. Structured questionnaire was prepared to assess storage mechanism of fruit, source of fruit, processing and hygienic condition of working environment. Concerning pH there was slight increase in juices that were collected at night. The probable reason may be inappropriate storage of fruit and over dilution of fruit juices. Regarding the bacterial load of fruit juice samples both avocado9 (38.38%) and papaya8 (33.67%) were found to be more contaminated with bacteria than mango 6(28.53%).This may be the water activity, antimicrobial constituents and/or nutrient content. The venders cause subsequent contamination during preparation, handling, by the side of waste disposal system, using water that is not boiled for dilution. Therefore, regular supervision and training about safe processing and handling of fruit juices and hygiene of venders can improve the quality of fresh fruit juices.
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OBOH, H. A., and O. S. ITUA. "FLUCTUATIONS OF TOTAL ANTIOXIDANT CAPACITY (TAC) IN FRESH AND REFRIGERATED FRUIT JUICES BOUGHT IN BENIN CITY, NIGERIA." Nigerian Journal of Life Sciences (ISSN: 2276-7029) 4, no. 1 (March 17, 2022): 92–97. http://dx.doi.org/10.52417/njls.v4i1.160.
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Fruit juices contain phenolic compounds and vitamin C which possess antioxidant capacity. A knowledge of the effect of refrigerated storage on the total antioxidant characteristics of citrus fruits is necessary. Total antioxidant capacities (TAC) of nine Nigerian fruits were collected from a local market. The pulp and seed free juices were obtained using a Gallenkamp juicer. The fresh fruit juices namely; Green Apple, carrot, Grape, Mango (Mangifera indica), ?Bush mango‘(Irvinga gabonesis), Orange, pawpaw, pineapple and watermelon were stored in plastic containers and refrigerated at 20C for 0, 15, 30,60,120, 240,and 360minutes. The juices were thereafter assayed for total antioxidant capacity during the timed intervals. Fresh Mango fruit juice had the highest TAC with a value of 76.62 ± 0.16mM Trolox Equil/L. Pawpaw and pineapple juices had the lowest value of 11.89±1.29 mM and 12.91± 1.05mM Trolox Equil/L respectively. The results showed general fluctuations in the TAC of all the fruit juices. These values fluctuated between 15 and 30minutes period and rose to a peak between thirty minutes to two hours, except for apple which peaked at the fourth hour. Thereafter a downward trend was observed in all the fruit juices. TAC decreased thereafter to values lower than that obtained at 0hr. There were no significant difference at p ? 0.05 between the values for TAC at 0 and 6hr for carrot, grape, apple and pineapple juices. Therefore these juices have the greatest storage stability and the smallest antioxidant capacity decrease. Watermelon and pawpaw juices have the lowest TAC and after 6hours of refrigerated storage, the values were significantly lowered. Fruit juices should be consumed within two hours of its preparation to benefit maximally from its antioxidant content and effect
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Klish, William J. "Use of Fruit Juice in the Diets of Young Children." Pediatrics 95, no. 3 (March 1, 1995): 433. http://dx.doi.org/10.1542/peds.95.3.433.
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Fruit juice is a modern addition to the infant's diet due to the development of technology for juice extraction and an adequate supply of fruit. It has been marketed as healthy, natural, and nutritious. As a result, parents (in trying to do what is best for their infants) have been feeding juices in increasing quantities. In 1992, $164 million was spent on bottled baby juice in the United States according to Information Resources, Inc, a marketing company that tracks the consumer industry. For the past several decades, pediatricians have recognized that excessive consumption of fruit juice has been associated with diarrhea, gassiness, stomachaches, and other abdominal complaints.
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Pankaj Nainwal and Amita B Sati. "Assessment of ascorbic acid content and anti-oxidant activity in juices of selected fruits help in the prophylaxis of primary symptoms of COVID-19." International Journal of Research in Pharmaceutical Sciences 11, SPL1 (November 2, 2020): 1139–43. http://dx.doi.org/10.26452/ijrps.v11ispl1.3561.
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Ascorbic Acid, a regimen claimed to use in the prevention of primary symptoms of COVID-19, is a hydrophilic anti-oxidant found plentiful in fruit juices, which also known to possess total anti-oxidant activity. Fruits play an essential part in our healthy diet. As many fruits contain anti-oxidant properties which means the presence of anti-oxidant constituents. In present study samples of the various fruit juices obtained from the local market were seek out for the ascorbic acid content and estimated for their anti-oxidant activity. For determining ascorbic acid content, the dichlorophenol-indophenol method was employed, while anti-oxidant activity was studied by employing Ferric Reducing Antioxidant Power assay and reducing power assay method. As per the result obtained, the high amount of ascorbic acid was found in amla juice while bael juice was found for good anti-oxidant activity. The conclusion results out from the study that fruits rich in an appreciable amount of ascorbic acid possess good anti-oxidant activity. Those juices results in best anti-oxidant activity indicate the presence of phenolics, i.e. phenolic compounds.
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CASTILLO, ALEJANDRO, and EDUARDO F. ESCARTIN. "Survival of Campylobacter jejuni on Sliced Watermelon and Papaya." Journal of Food Protection 57, no. 2 (February 1, 1994): 166–68. http://dx.doi.org/10.4315/0362-028x-57.2.166.
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The ability of Campylobacter jejuni to survive on watermelon and papaya was investigated. Fruit cubes were obtained aseptically and inoculated on the surface with washed suspensions of C. jejuni. In some trials lemon juice was added to the surface of inoculated cubes. The test organism survived on inoculated fruits stored at room temperature (25–29°C) for at least up to 6 h. Percent survivors at 6 h of storage ranged from 7.7 to 61.8% in fruits without lemon juice added and from 0 to 14.3% in fruits with lemon juice added. Application of lemon juice to the surface of inoculated fruit cubes reduced significantly the counts of C. jejuni during storage of the fruits (P < 0.01). Lemon juice appeared more destructive to C. jejuni on papaya than on watermelon. However, a few surviving C. jejuni were still detected after 4 and 6 h of storage, respectively. Results indicate that C. jejuni can survive on sliced watermelon and papaya for a time long enough to be a risk for the consumer, and that adding lemon juice to the sliced fruit appears not to be completely efficient to eliminate the risk of infection through consumption of contaminated fruit.
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Sondhi, Sonica, Palki Sahib Kaur, Himansi Sura, Manisha Juglani, and Deepali Sharma. "Amylase Based Clarification of Apple, Orange and Grape Juice." CGC International Journal of Contemporary Technology and Research 3, no. 2 (July 17, 2021): 187–90. http://dx.doi.org/10.46860/cgcijctr.2021.06.31.187.
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Amylases are starch-degrading enzymes produced by many bacteria, plants, fungi and animals. It has found tremendous application in industry. One of its applications is in fruit industry wherein amylases are used to clarify fruit juices and reduce its viscosity. In fruits, high amount of starch is present which resulted in increased viscosity of the prepared juices. This may also lead to settling of juice at bottom. Amylases act on starch component and degrade it. In the current study, amylase from B. licheniformis was used for the clarification of apple, orange and grape juices. Total suspended solids, viscosity and total acidity was found to decrease with increasing amylase concentration. The results revealed that after amylase treatment the color, texture and flavor of juices were also improved.