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Artykuły w czasopismach na temat „Phenolics acids”

Autor: Grafiati

Data publikacji: 3 czerwca 2025

Data aktualizacji: 31 lipca 2025

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1

Zilic, Sladjana, Vesna Hadzi-Taskovic-Sukalovic, Dejan Dodig, Vuk Maksimovic, and Vesna Kandic. "Soluble free phenolic compound contents and antioxidant capacity of bread and durum wheat genotypes." Genetika 45, no. 1 (2013): 87–100. http://dx.doi.org/10.2298/gensr1301087z.

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The objective of this study was to determine phenolic compounds and the total antioxidant capacity in the grain of ten bread (T. aestivum L.) and ten durum (T. durum Desf.) wheat genotypes. Soluble free forms of total phenolics, flavonoids, PVPP (polyvinylpolypyrrolidone) bound phenolics, proanthocyanidins and phenolic acids were investigated. In addition, the correlation coefficients between total antioxidant capacities and the concentration of different soluble free phenolic compounds, as well as between soluble free total phenolics and phenolic acids, flavonoids and PVPP bound phenolics wer

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Ye, Lingxu, Sumei Zhou, Liya Liu, et al. "Phenolic Compounds and Antioxidant Capacity of Brown Rice in China." International Journal of Food Engineering 12, no. 6 (2016): 537–46. http://dx.doi.org/10.1515/ijfe-2015-0346.

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Abstract The phenolic compounds and antioxidant activity of brown rice are well known but the extent to which phenolics and antioxidant activity varies within rice (Oryza sativa) is not known. This study evaluated the natural variation of phenolic compounds in brown rice of the major cultivars currently grown in China. Free phenolics were extracted with chilled methanol, while bound phenolics were released and extracted by alkaline hydrolysis. There were significant differences in phenolic and flavonoid content between these cultivars and significant differences in bound and total phenolics be

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3

Tuyen, Phung Thi, Do Tan Khang, Pham Thi Thu Ha, Tran Ngoc Hai, Abdelnaser Abdelghany Elzaawely, and Tran Dang Xuan. "Antioxidant Capacity and Phenolic Contents of Three Quercus Species." International Letters of Natural Sciences 54 (May 2016): 85–99. http://dx.doi.org/10.18052/www.scipress.com/ilns.54.85.

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The antioxidant capability and phenolic contents of ethanol extracts (free phenolics) and ethyl acetate extracts (bound phenolics) of three Quercus species were estimated in this work. The antioxidant activities were examined by 1,1-diphenyl-2-picrylhydrazyl (DPPH), 2,2′-azinobis (3-ethylbenzothiazoline-6-sulfonic acid) diammonium salt (ABTS) free radical, reducing power and b-carotene bleaching methods. HPLC was employed to detect major phenolic acids. The leaf extract of Q. salicina contained maximum total phenolics while the highest total flavonoid content was found in the leaf extract of Q

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Tuyen, Phung Thi, Do Tan Khang, Pham Thi Thu Ha, Tran Ngoc Hai, Abdelnaser Abdelghany Elzaawely, and Tran Dang Xuan. "Antioxidant Capacity and Phenolic Contents of Three <i>Quercus</i> Species." International Letters of Natural Sciences 54 (May 11, 2016): 85–99. http://dx.doi.org/10.56431/p-u66fhw.

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The antioxidant capability and phenolic contents of ethanol extracts (free phenolics) and ethyl acetate extracts (bound phenolics) of three Quercus species were estimated in this work. The antioxidant activities were examined by 1,1-diphenyl-2-picrylhydrazyl (DPPH), 2,2′-azinobis (3-ethylbenzothiazoline-6-sulfonic acid) diammonium salt (ABTS) free radical, reducing power and b-carotene bleaching methods. HPLC was employed to detect major phenolic acids. The leaf extract of Q. salicina contained maximum total phenolics while the highest total flavonoid content was found in the leaf extract of Q

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5

Durruty, María Ximena, María Marcela Rodríguez, Ana Karina De Figueiredo, Carmen Margarita Mateo, Susana María Nolasco, and Isabel Concepción Riccobene. "EXTRACTION OF FREE AND BOUND PHENOLICS FROM GLABROUS CANARY SEED (Phalaris canariensis L.) HULLS." Latin American Applied Research - An international journal 54, no. 1 (2024): 99–106. http://dx.doi.org/10.52292/j.laar.2024.1268.

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The aim was to extract free phenolics using a green solvent (ethanol), and bound phenolics from glabrous canary seed hulls. The efficiency of ethanol 75% was compared with that of other solvents used in the literature (acetone 70%; methanol 80%) in terms of phenolic yield and antioxidant activity. Bound phenolics were extracted with ethyl acetate, prior to hydrolysis with NaOH 2 M. The phenolic extracts obtained were characterized according to extraction yield, total phenols, flavonoides, antioxidant activity, radical DPPH; and phenolic profile, HPLC. Methanol 80% had lower extraction yield, a

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6

Medic, Aljaz, Jerneja Jakopic, Anita Solar, Metka Hudina, and Robert Veberic. "Walnut (J. regia) Agro-Residues as a Rich Source of Phenolic Compounds." Biology 10, no. 6 (2021): 535. http://dx.doi.org/10.3390/biology10060535.

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The present study was designed to identify and quantify the major phenolic compounds (phenolics) in the inner and outer husks, buds and bark of the Persian walnut, Juglans regia L. A comparison across six different cultivars grown in Slovenia was also carried out: ‘Fernor’, ‘Fernette’, ‘Franquette’, ‘Sava’, ‘Krka’ and ‘Rubina’. A total of 83 compounds were identified, which included 25 naphthoquinones, 15 hydroxycinnamic acids, 8 hydroxybenzoic acids, 13 flavanols, 2 flavones, 1 flavanone and 19 flavonols. For the first time, 38 phenolics in the husks, 57 phenolics in the buds and 29 phenolics

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7

Djurdjevic, L., Gordana Gajic, Snezana Jaric, Olga Kostic, Miroslava Mitrovic, and P. Pavlovic. "Analysis of benzoic and cinnamic acid derivatives of some medicinal plants in Serbia." Archives of Biological Sciences 65, no. 2 (2013): 603–9. http://dx.doi.org/10.2298/abs1302603d.

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Natural phenolics, which are ubiquitously distributed in plants, have been reported as functional factors in phytotherapy. We have examined phenolic compounds in the leaves and inflorescences of five significant medicinal plants of different plant families: Salvia officinalis (Lamiaceae); Achillea clypeolata (Asteraceae); Nymphaea alba (Nymphaeaceae); Rumex acetosella (Polygonaceae) and Allium ursinum (Alliaceae). The examined species were rich in total phenolics (up to 30.88 mg/g dry weight). According to their total phenolics contents, the plants can be arranged in the following order: A. cl

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8

Djurdjević, L., M. Mitrović, P. Pavlović, S. Perišić, and M. Mačukanović-Jocić. "Total phenolics and phenolic acids content in low (Chrysopogon gryllus) and mediocre quality (Festuca vallesiaca) forage grasses of Deliblato Sands meadow-pasture communities in Serbia." Czech Journal of Animal Science 50, No. 2 (2011): 54–59. http://dx.doi.org/10.17221/3995-cjas.

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&nbsp;Chrysopogon gryllus and Festuca vallesiaca are components of a number of meadow-pasture communities in Serbia. We performed the analyses of phenolics that influence quality and digestibility of grasses to a great extent. Total phenolics were measured spectrophotometrically and phenolic acids by HPLC analysis. The aboveground parts of C. gryllus contained 10.6 mg/g whereas F. vallesiaca of 21.6 mg/g total phenolics. Bound phenolics dominated over free ones in both species. The content of both free and bound p-coumaric, ferulic, p-hydroxybenzoic and syringic acid was higher in C. gryll

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9

Abotaleb, Mariam, Alena Liskova, Peter Kubatka, and Dietrich Büsselberg. "Therapeutic Potential of Plant Phenolic Acids in the Treatment of Cancer." Biomolecules 10, no. 2 (2020): 221. http://dx.doi.org/10.3390/biom10020221.

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Globally, cancer is the second leading cause of death. Different conventional approaches to treat cancer include chemotherapy or radiotherapy. However, these are usually associated with various deleterious effects and numerous disadvantages in clinical practice. In addition, there are increasing concerns about drug resistance. In the continuous search for safer and more effective treatments, plant-derived natural compounds are of major interest. Plant phenolics are secondary metabolites that have gained importance as potential anti-cancer compounds. Phenolics display a great prospective as cyt

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10

Ailer, Štefan, Roman Serenčéš, Dagmar Kozelová, Zuzana Poláková, and Silvia Jakabová. "Possibilities for Depleting the Content of Undesirable Volatile Phenolic Compounds in White Wine with the Use of Low-Intervention and Economically Efficient Grape Processing Technology." Applied Sciences 11, no. 15 (2021): 6735. http://dx.doi.org/10.3390/app11156735.

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The influence of the technological processes of grape processing on the content of hydroxycinnamic acids and volatile phenolic substances in wine was studied. The method of targeted oxygenation was applied in grape processing technology of the Welschriesling and Chardonnay grape varieties. The content of volatile phenolic substances was determined by gas chromatography, the content of hydroxycinnamic acids by liquid chromatography, and the basic analytical parameters of the wine by FTIR spectrometry. The method of targeted must oxygenation had a statistically significant effect on the content

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11

BUJDOSÓ, Géza, Éva LENGYEL-KÓNYA, Mária BERKI, Anita VÉGH, Laurine KITHI, and Nóra ADÁNYI. "Effects of Green Husks of Hungarian-Bred Cultivars on Their Walnut Bacterial Blight Susceptivity." Bulletin of University of Agricultural Sciences and Veterinary Medicine Cluj-Napoca. Horticulture 81, no. 1 (2024): 22–30. http://dx.doi.org/10.15835/buasvmcn-hort:2023.0014.

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The Persian walnut (Juglans regia L.) is one of Central Europe's most grown nut trees. In the green husks of walnuts, among the most important bioactive compounds are phenolics (hydroxybenzoic acids, hydroxycinnamic acids, flavonoids, naphthoquinones), which play an important role in the plant defense mechanisms against stress caused by various pathogens e.g., Xanthomonas arboricola pv. juglandis, furthermore mentioned as Xaj. The study examined the full Hungarian walnut assortment to detect the difference in phenolic profiles of their green husk and the relationship between the concentration

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12

Roowi, Suri, Z. Hussin, R. Othman, S. A. Muhammad, and Arif Zaidi Jusoh. "Phenolic Acids in Selected Tropical Citrus." Asian Journal of Plant Biology 1, no. 1 (2013): 1–5. http://dx.doi.org/10.54987/ajpb.v1i1.13.

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  In spite of wide research on plant phenolics, limited data are available on the phenolic acid content in selected tropical citrus. Phenolic acids are known to contribute health benefits to humans. In this study, free and ester conjugated phenolic acid in selected tropical citrus was successfully identified and quantified using Gas Chromatography Mass Spectrometry (GCMS). Citrus microcarpa, Citrus medica, Citrus hystrix and Citrus suhuiensis were among the tropical citrus analysed for their free and ester conjugated phenolic acids. C. microcarpa contains high amount of free and es

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13

Zhang, Xiaoxiao, Daniela D. Herrera-Balandrano, Wuyang Huang, et al. "Comparison of Nutritional and Nutraceutical Properties of Burdock Roots Cultivated in Fengxian and Peixian of China." Foods 10, no. 9 (2021): 2095. http://dx.doi.org/10.3390/foods10092095.

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This study aimed to analyze and compare the nutritional quality of powders of burdock root from Fengxian (FX) and Peixian (PX) in China. The nutrient composition including carbohydrates, protein, amino acids, vitamin C, carotenoids, as well as total phenols, total flavonoids and phenolic compounds were investigated in addition to in vitro antioxidant capacity. The results showed that the basic nutrients of burdock root powder (BRP) in both locations did not have significant differences (p > 0.05), although the in vitro antioxidant capacity of BRP of Fengxian (F-BRP) was greater than that of

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14

Woolfson, Kathlyn N., Mina Esfandiari, and Mark A. Bernards. "Suberin Biosynthesis, Assembly, and Regulation." Plants 11, no. 4 (2022): 555. http://dx.doi.org/10.3390/plants11040555.

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Suberin is a specialized cell wall modifying polymer comprising both phenolic-derived and fatty acid-derived monomers, which is deposited in below-ground dermal tissues (epidermis, endodermis, periderm) and above-ground periderm (i.e., bark). Suberized cells are largely impermeable to water and provide a critical protective layer preventing water loss and pathogen infection. The deposition of suberin is part of the skin maturation process of important tuber crops such as potato and can affect storage longevity. Historically, the term “suberin” has been used to describe a polyester of largely a

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15

Suprun, Andrey R., Alexandra S. Dubrovina, Alexey P. Tyunin, and Konstantin V. Kiselev. "Profile of Stilbenes and Other Phenolics in Fanagoria White and Red Russian Wines." Metabolites 11, no. 4 (2021): 231. http://dx.doi.org/10.3390/metabo11040231.

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Grapes and wines represent the most important source of edible stilbenes and other phenolic metabolites, which demonstrate a wide range of valuable biological activities. However, there is no information about the profile and content of phenolic compounds in Russian wines. We firstly analyzed phenolics (stilbenes, phenolic acids, and flavonols) in some representatives of Russian wines, including eleven red and seven white Russian wines from Fanagoria, Krasnodarsky Territory. The Russian red wines contained six stilbenes (trans-resveratrol, cis-resveratrol, trans-, cis-piceid, trans-piceatannol

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16

Padda, M. S., and D. H. Picha. "(51) Changes in Phenolic Compounds in Sweetpotatoes during Low Temperature Storage." HortScience 40, no. 4 (2005): 1088A—1088. http://dx.doi.org/10.21273/hortsci.40.4.1088a.

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Sweetpotatoes may be potentially high in concentration of certain phytochemical compounds, including phenolics. Low temperature stress-induced phenolic compounds may enhance the nutraceutical value of sweetpotatoes. However, extended exposure to low temperature results in chilling injury. Cured and non-cured roots of `Beauregard' sweetpotatoes were exposed to low temperature storage (5 °C) for up to 4 weeks. The total phenolics and individual phenolic acid contents were determined at weekly intervals using Folin-Denis reagent and reversed-phase HPLC, respectively. Total phenolics and individua

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17

Sun, Wenli, and Mohamad Hesam Shahrajabian. "Therapeutic Potential of Phenolic Compounds in Medicinal Plants—Natural Health Products for Human Health." Molecules 28, no. 4 (2023): 1845. http://dx.doi.org/10.3390/molecules28041845.

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Phenolic compounds and flavonoids are potential substitutes for bioactive agents in pharmaceutical and medicinal sections to promote human health and prevent and cure different diseases. The most common flavonoids found in nature are anthocyanins, flavones, flavanones, flavonols, flavanonols, isoflavones, and other sub-classes. The impacts of plant flavonoids and other phenolics on human health promoting and diseases curing and preventing are antioxidant effects, antibacterial impacts, cardioprotective effects, anticancer impacts, immune system promoting, anti-inflammatory effects, and skin pr

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18

Simsek, Tuba, Bakhtiyor Rasulev, Christian Mayer та Senay Simsek. "Preparation and Characterization of Inclusion Complexes of β-Cyclodextrin and Phenolics from Wheat Bran by Combination of Experimental and Computational Techniques". Molecules 25, № 18 (2020): 4275. http://dx.doi.org/10.3390/molecules25184275.

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Bitterness often associated with whole wheat products may be related to phenolics in the bran. Cyclodextrins (CDs) are known to form inclusion complexes. The objective was to form inclusion complexes between β-CD and wheat phenolics. Pure phenolic acids (trans-ferulic acid (FA), caffeic acid (CA), and p-coumaric acid (CO)) and phenolic acids from wheat bran were used to investigate complex formation potential. Complexes were characterized by spectroscopy techniques, and a computational and molecular modeling study was carried out. The relative amount of complex formation between β-CD and wheat

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19

Menga, Valeria, Carmela Garofalo, Serafino Suriano, et al. "Phenolic Acid Composition and Antioxidant Activity of Whole and Defatted Seeds of Italian Hemp Cultivars: A Two-Year Case Study." Agriculture 12, no. 6 (2022): 759. http://dx.doi.org/10.3390/agriculture12060759.

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The study investigated the nutritional profile and nutraceutical composition of the seeds (whole and defatted) of two monoecious hemp cultivars (Carmaleonte, Codimono) and one dioecious cultivar (CS) grown during the 2018 and 2019 crop seasons. The phenolic acid profiles, both free and bound, antioxidant activity (AA), protein content (PC), total phenolic content (TPC), β-carotene, lutein content, and condensed tannins (CT) were studied, and the effects of genotype (G), year (Y), and GxY interaction were also measured. The results indicated the stronger involvement of the year in the nutrition

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Schrijvers-Gonlag, Marcel, Christina Skarpe, Riitta Julkunen-Tiitto, and Antonio B. S. Poléo. "Phenolic concentrations and carbon/nitrogen ratio in annual shoots of bilberry (Vaccinium myrtillus) after simulated herbivory." PLOS ONE 19, no. 3 (2024): e0298229. http://dx.doi.org/10.1371/journal.pone.0298229.

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Herbivory can be reduced by the production of defense compounds (secondary metabolites), but generally defenses are costly, and growth is prioritized over defense. While defense compounds may deter herbivory, nutrients may promote it. In a field study in boreal forest in Norway, we investigated how simulated herbivory affected concentrations of phenolics (generally a defense) and the carbon/nitrogen (C/N) ratio in annual shoots of bilberry (Vaccinium myrtillus), a deciduous clonal dwarf shrub whose vegetative and generative parts provide forage for many boreal forest animals. We measured conce

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21

Vasilakopoulou, Paraskevi B., Aimilia-Tatiana Gousgouni, Amalia E. Yanni, Nikolaos Kostomitsopoulos, Vaios T. Karathanos, and Antonia Chiou. "Polar Phenol Detection in Plasma and Serum: Insights on Sample Pre-Treatment for LC/MS Analysis and Application on the Serum of Corinthian Currant-Fed Rats." Biomolecules 12, no. 12 (2022): 1838. http://dx.doi.org/10.3390/biom12121838.

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Analysis of plasma and serum provides valuable information on the amounts of polar phenols’ circulating after ingestion. In the present study, protein precipitation (PPT), liquid–liquid extraction (LLE), solid phase extraction (SPE), enzymatic hydrolysis and their combinations were meticulously evaluated for the extraction of a variety of polar phenolic moieties from plasma and serum. The recovery values of the above methods were compared; satisfactory recoveries (>60%) were attained for most analytes. Polar phenol aglycones undergo degradation with enzymatic hydrolysis; however, their exte

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Dabina-Bicka, Ilona, Daina Karklina, Zanda Kruma, and Fredijs Dimins. "Bioactive Compounds in Latvian Beer." Proceedings of the Latvia University of Agriculture 30, no. 1 (2013): 35–42. http://dx.doi.org/10.2478/plua-2013-0012.

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Abstract Beer is a complex mixture - over 400 different compounds have been characterized in beer. Significant health and product quality promoting benefits have been attributed to its bioactive secondary metabolites such as phenolics. Polyphenols and phenolic acids present in beer are natural antioxidants. The aim of the research was to characterize the bioactive compounds in Latvian barley beer, such as phenolic acids and flavanols. In an experiment, different lager-type beers produced in Latvia were analysed. The total phenolic content was determined spectrophotometrically according to the

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23

Milinčić, Danijel D., Nemanja S. Stanisavljević, Aleksandar Ž. Kostić, et al. "Bioaccessibility of Phenolic Compounds and Antioxidant Properties of Goat-Milk Powder Fortified with Grape-Pomace-Seed Extract after In Vitro Gastrointestinal Digestion." Antioxidants 11, no. 11 (2022): 2164. http://dx.doi.org/10.3390/antiox11112164.

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This study deals with the evaluation of the bioaccessibility and antioxidant properties of phenolic compounds from heat-treated skim goat-milk powder fortified with grape-pomace-seed extract, after in vitro gastrointestinal digestion. Ultra-high performance liquid chromatography coupled to diode array detection and mass spectrometry (UHPLC-DAD MS/MS) analysis confirmed the abundant presence of phenolic acids and flavan-3-ols in the grape-pomace-seed extract (SE) and heat-treated skim goat-milk/seed-extract powder (TME). After in vitro digestion of TME powder and recovery of total quantified ph

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Mehta, Jignasu P., Chirag R. Fultariya, Pravin H. Parmar, Solhil H. Vadia, and Balubhai A. Golkiya. "Evaluation of Phenolic Content and Antioxidant Capacity ofEleusine coracana(L.)." E-Journal of Chemistry 9, no. 4 (2012): 2089–96. http://dx.doi.org/10.1155/2012/792372.

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The aim of this study is to evaluate the content of phenolics: total seven phenolic acids and one flavonoid were separated from the species ofEleusine coracana(L.). The separated phenolics were characterized by various spectral techniques. The antioxidant capacity of all phenolics was determined by rancimat study of sunflower oil using control and standard drugs like Glipizide and Metformin. The stability period of sunflower oil was found to increase from 0.89 hr to 1.04 hr in presence of eight extracted ingredients ofEleusine coracana(L.), which was compared with result of neat sunflower oil.

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Mikulic Petkovsek, M., F. Stampar, and R. Veberic. "Seasonal changes in phenolic compounds in the leaves of scab-resistant and susceptible apple cultivars." Canadian Journal of Plant Science 89, no. 4 (2009): 745–53. http://dx.doi.org/10.4141/cjps08202.

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Leaf samples were collected from apple varieties susceptible and resistant to apple scab [Venturia inaequalis (Cke.) Wint.] from June to September for 2 yr between 2005 and 2006. These were analyzed for phenolic compounds, using high-performance liquid chromatography (HPLC). In the apple leaves, the following hydroxycinnamic acids were detected: chlorogenic, caffeic and p-coumaric acids; the following dihydrochalcone: phloridzin, and the following flavonoids: epicatechin, catechin, rutin and quercitrin. The total of phenolic compounds in apple leaves was determined spectrophotometrically, usin

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Bento-Silva, Andreia, Noélia Duarte, Elsa Mecha, et al. "Broa, an Ethnic Maize Bread, as a Source of Phenolic Compounds." Antioxidants 10, no. 5 (2021): 672. http://dx.doi.org/10.3390/antiox10050672.

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Maize is an important source of phenolic compounds, specially hydroxycinnamic acids, which are widely known for their antioxidant activity and associated health benefits. However, these effects depend on their bioaccessibility, which is influenced by the different techniques used for food processing. Several traditional products can be obtained from maize and, in Portugal, it is used for the production of an ethnic bread called broa. In order to evaluate the effect of processing on maize phenolic composition, one commercial hybrid and five open-pollinated maize flours and broas were studied. T

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Shen, Haiying, Jiaqi Xu, Jinzhen Cao, et al. "Evolution of extractive composition in thermally modified Scots pine during artificial weathering." Holzforschung 73, no. 8 (2019): 747–55. http://dx.doi.org/10.1515/hf-2018-0216.

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AbstractIn order to clarify the evolution and role of extractives in thermally modified wood during the process of weathering, the compositions of acetone extractives from thermally modified Scots pine after exposure in an accelerated weathering tester for different durations were determined using gas chromatography-mass spectrometry (GC-MS). Fatty acids and phenolics were proved to be the main types of extractives in weathered thermally modified Scots pine, and some sugars, terpenes and alcohols were also collected. With the progress of weathering, the content of fatty acids decreases signifi

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Peixoto, Juliana A. Barreto, Gerardo Álvarez-Rivera, Rita C. Alves, et al. "Comprehensive Phenolic and Free Amino Acid Analysis of Rosemary Infusions: Influence on the Antioxidant Potential." Antioxidants 10, no. 3 (2021): 500. http://dx.doi.org/10.3390/antiox10030500.

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The phenolics profile, free amino acids composition, and antioxidant potential of rosemary infusions were studied. Forty-four compounds belonging to nine different groups (hydroxybenzoic acids, hydroxycinnamic acids, flavan-3-ols, flavanones, flavones, phenolic diterpenes, hydroxybenzaldehydes, coumarins, and pyranochromanones) were identified by UHPLC-ESI-Q-TOF-MS. Of these, seven were firstly described in rosemary infusions: a rosmanol derivative, two dihydroxycoumarin hexosides, a hydroxybenzaldehyde, a dihydroxybenzoic acid hexoside, coumaric acid hexoside, and isocalolongic acid. The free

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Rayee, Ramin, Tran Dang Xuan, Hoang Dung Tran, Naqib Ahmad Fakoori, Tran Dang Khanh, and Tran Dang Dat. "Responses of Flavonoids, Phenolics, and Antioxidant Activity in Rice Seedlings between Japonica and Indica Subtypes to Chilling Stress." International Letters of Natural Sciences 77 (January 2020): 41–50. http://dx.doi.org/10.18052/www.scipress.com/ilns.77.41.

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Chilling is one of the major abiotic stress which limites yield and quality of many crops. The seedlings of rice varieties namely Koshihikari (Japonica subtype) chilling tolerant, and the susceptible NMR2 (Indica subtype) were treated at 25/15 °C and 5/4 °C day/night to determine the growth parameters, phenolic contents, and antioxidant activity. It was found that in all treatments, the growth of MNR2 including root and shoot lengths, and leaf and root weights were inhibited at greater levels than Koshihikari. There were seven phenolic acids identified in leaves of Koshihikari including caffei

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Rayee, Ramin, Tran Dang Xuan, Hoang Dung Tran, Naqib Ahmad Fakoori, Tran Dang Khanh, and Tran Dang Dat. "Responses of Flavonoids, Phenolics, and Antioxidant Activity in Rice Seedlings between Japonica and Indica Subtypes to Chilling Stress." International Letters of Natural Sciences 77 (January 10, 2020): 41–50. http://dx.doi.org/10.56431/p-3elg24.

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Chilling is one of the major abiotic stress which limites yield and quality of many crops. The seedlings of rice varieties namely Koshihikari (Japonica subtype) chilling tolerant, and the susceptible NMR2 (Indica subtype) were treated at 25/15 °C and 5/4 °C day/night to determine the growth parameters, phenolic contents, and antioxidant activity. It was found that in all treatments, the growth of MNR2 including root and shoot lengths, and leaf and root weights were inhibited at greater levels than Koshihikari. There were seven phenolic acids identified in leaves of Koshihikari including caffei

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Amri, Zahra, Houda Lazreg-Aref, Manel Mekni, et al. "Oil Characterization and Lipids Class Composition of Pomegranate Seeds." BioMed Research International 2017 (2017): 1–8. http://dx.doi.org/10.1155/2017/2037341.

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This study aims to investigate the physicochemical characteristics, phenolics content, and oil composition of pomegranate oil seeds (PSO). Quality indices, pigments, phenolics content, and antioxidant activity were determined. PSO was fractioned into polar lipids: glycolipids (GL) and phospholipids (PL). Sterols profile and fatty acids composition of total lipids (TL), GL, and PL were determined by GC/FID. The free acidity, the peroxide value, and the specific extinction coefficients were, respectively, 1.69%, 3.42 in milliequivalents of active oxygen per kilogram of oil, 4.15, and 3.95. PSO i

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Mencin, Marjeta, Maja Mikulic-Petkovsek, Robert Veberič, and Petra Terpinc. "Development and Optimisation of Solid-Phase Extraction of Extractable and Bound Phenolic Acids in Spelt (Triticum spelta L.) Seeds." Antioxidants 10, no. 7 (2021): 1085. http://dx.doi.org/10.3390/antiox10071085.

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A solid-phase extraction (SPE) technique was developed and optimised for isolation and concentration of extractable and bound phenolic acids from germinated spelt seeds, for analysis by liquid chromatography–mass spectrometry. Samples initially underwent solvent extraction under different conditions to maximise the yield of phenolic antioxidants. Optimal extraction conditions for extractable phenolics were absolute methanol as solvent, sample-to-methanol ratio 1:9, and reconstitution in non-acidified water. The bound phenolics were extracted from sample pellets using hydrolysis with 2 M NaOH,

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Rutledge, Grant, Marshall Miller, Amandeep Sandhu, Indika Edirisinghe, Britt Burton-Freeman, and Barbara Shukitt-Hale. "Berry Phenolics Are Associated With Cognitive Enhancement in Blueberry- and Strawberry-Supplemented Older Adults." Current Developments in Nutrition 5, Supplement_2 (2021): 921. http://dx.doi.org/10.1093/cdn/nzab049_034.

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Abstract Objectives Research suggests that supplementation with berries may improve cognition during aging. In two recently published 90-day trials, healthy older adults (ages 60–75; BMI 18.5–29.9) who consumed 24 g/d freeze-dried blueberry or strawberry showed improved cognitive function, relative to placebo controls. However, the mechanism of action underlying these cognitive benefits and the role of berry phenolics in cognitive enhancement is not fully understood. In this study, we hypothesized that dietary supplementation with blueberry or strawberry would increase the concentrations of ci

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Spencer, Jeremy, Gulten Soycan, Giulia Corona, et al. "Chronic Vascular Effects of Oat Phenolic Acids and Avenanthramides in Pre- or Stage 1 Hypertensive Adults." Current Developments in Nutrition 4, Supplement_2 (2020): 478. http://dx.doi.org/10.1093/cdn/nzaa045_111.

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Abstract Objectives Wholegrain consumption is linked to a lower risk of cardiovascular disease. Evidence have established that the consumption of wholegrain oats lowers blood cholesterol, via a mechanism partly mediated by β-glucan. However, oats contain an array of phenolics, including ferulic acid and avenanthramides, which may also contribute to the cardiovascular health benefits. We investigated whether daily consumption of oat phenolics leads to improvement of markers of CVDrisks in adults. Methods In a 3 arm crossover double-blind, placebo-controlled trial, 28 volunteers consumed either:

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Russell, Wendy, and Garry Duthie. "Plant secondary metabolites and gut health: the case for phenolic acids." Proceedings of the Nutrition Society 70, no. 3 (2011): 389–96. http://dx.doi.org/10.1017/s0029665111000152.

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Plant-based diets contain a plethora of secondary metabolites that may impact on health and disease prevention. Much attention has been focused on the potential bioactivity and nutritional relevance of several classes of phytochemicals such as flavonoids, carotenoids, phyto-oestrogens and glucosinolates. Less attention has been paid to simple phenolic acids that are widely found in fruit, vegetables, herbs, spices and beverages. Daily intakes may exceed 100 mg. In addition, bacteria in the gut can perform reactions that transform more complex plant phenolics such as anthocyanins, procyanidins,

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Ramadoss, Peera Priya, and Kirubanandan Shanmugam. "Evaluation of Phytochemical Analysis and Total Phenol Content of Proso Millet and Barnyard Millet." Proceedings of Anticancer Research 8, no. 2 (2024): 13–19. http://dx.doi.org/10.26689/par.v8i2.5329.

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Whole grains of proso and barnyard millets were sequentially extracted using different solvents (hexane, chloroform, ethyl acetate, and methanol). Phytochemical analysis was performed qualitatively, and the total phenolic content in the extracts of proso and barnyard millets was quantified. Alkaloids and cardiac glycosides were identified in all solvent extracts of both millets. Anthraquinone and glycosides yielded negative results in all solvent extracts of both millets. Among all the solvent extracts, methanol extracts of proso and barnyard millets showed the presence of major compounds such

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Su, Tingting, Juan Wei, Jinmei Zhao, Yumei Jiang, Yang Bi, and Galitsyn George. "Comparative Assessment of Functional Components and Antioxidant Activities between Hippophae rhamnoides ssp. sinensis and H. tibetana Berries in Qinghai–Tibet Plateau." Foods 12, no. 2 (2023): 341. http://dx.doi.org/10.3390/foods12020341.

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The Qinghai–Tibet Plateau is the main production area of Hippophae rhamnoides ssp. sinensis (Rha) and H. tibetana (Tib), but studies on the types and contents of soluble sugars, organic acids, free phenolics, bound phenolics, vitamin C (VC), tocopherol (VE) and carotenoids of the two sea buckthorn berries from this region have not been reported. In this paper, we found that the soluble sugars in Rha and Tib were mainly glucose and fructose; Rha exhibited a higher content of total sugar and fructose compared to Tib. The organic acids were mainly quinic acid and malic acid; Rha exhibited a highe

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Menezes Filho, Antonio Carlos Pereira de, Matheus Vinicius Abadia Ventura, Ivan Alves, et al. "Phytochemical prospection, total flavonoids and total phenolic and antioxidant activity of the mushroom extract Scleroderma verrucosum (Bull.) Pers." Brazilian Journal of Science 1, no. 1 (2022): 1–7. http://dx.doi.org/10.14295/bjs.v1i1.2.

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Scleroderma verrucosum is a species of mushroom belonging to the family Sclerodermataceae found in the Americas and Europe. This study aimed to evaluate the 70% ethanol extract of the vegetative part of the mushroom S. verrucosum for qualitative phytochemical constituents and total content of flavonoids and phenolics, and the DPPH free radical reduction activity. Mushroom extract was prepared in 70% ethanol solution. Qualitative phytochemical assay was performed for different groups using colorimetric reagents. The contents of total flavonoids and phenolics, and antioxidant activity in reducin

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Mitic, Milan, Mirjana Obradovic, Danijela Kostic, Ruzica Micic, and Emilija Pecev. "Polyphenol content and antioxidant activity of sour cherries from Serbia." Chemical Industry and Chemical Engineering Quarterly 18, no. 1 (2012): 53–62. http://dx.doi.org/10.2298/ciceq110701046m.

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The aim of this study is to evaluate the content of phenolics: the total phenols (TP), flavonoids (TF), anthocyanins (TA), as well as the total antioxidant capacity (TAC) in three sour cherry cultivars (Prunus cerasus L.) introduced to the southeast Serbia climate conditions. Among the researched sour cherries, ?Oblacinska? cultivar contained the highest amounts of all groups of phenolics, followed by ?Cigancica? > ?Marela?. A significant difference were observed in the phenolic content among different cultivars and growing seasons (p<0.05), and the phenolic compounds were significantly

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Sawicki, Tomasz, Monika Jabłońska, Anna Danielewicz, and Katarzyna E. Przybyłowicz. "Phenolic Compounds Profile and Antioxidant Capacity of Plant-Based Protein Supplements." Molecules 29, no. 9 (2024): 2101. http://dx.doi.org/10.3390/molecules29092101.

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The study aimed to determine the phenolic content and antioxidant capacity of five protein supplements of plant origin. The content and profile of phenolics were determined using the UHPLC-DAD-MS method, while antioxidant capacity (ABTS and DPPH assays) and total phenolic content (TPC) were evaluated using spectrophotometric tests. In the analyzed proteins, twenty-five polyphenols were detected, including eleven phenolic acids, thirteen flavonoids, and one ellagitannin. Hemp protein revealed the highest individual phenolics content and TPC value (1620 μg/g and 1.79 mg GAE/g, respectively). Als

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Giner, Rosa María, María Jesús Cuellar, María Carmen Recio, Salvador Máñez, and José Luis Ríos. "Chemical Constituents of Urospermum picroides." Zeitschrift für Naturforschung C 47, no. 7-8 (1992): 531–34. http://dx.doi.org/10.1515/znc-1992-7-807.

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Seven phenolic compounds were isolated from the aerial parts of U. picroides. They were identified by UV spectra, TLC and HPLC-DAD as luteolin, luteolin-7-glucoside, quercetin, quercetin-3-galactoside, kaempferol-3-galactoside, chlorogenic and isochlorogenic acids. Other phenolics were characterized by HPLC-DAD analysis: gallic, protocatechuic, caffeic, ferulic and isoferulic acids, quercetin-3-glucoside and luteolin-4′-glucoside.

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Tian, Qian, Wei Han, Donghao Wang, and Zhezhi Wang. "Heterologous Expression of MYB Gene (Rosea1) or bHLH Gene (Delila) from Antirrhinum Increases the Phenolics Pools in Salvia miltiorrhiza." International Journal of Molecular Sciences 25, no. 22 (2024): 11917. http://dx.doi.org/10.3390/ijms252211917.

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Phenolic acids have health-promoting properties, however, but their low concentrations in Salvia miltiorrhiza limit broader medicinal applications. MYB and bHLH transcription factors activate multiple target genes involved in phenylpropanoid metabolism, thereby enhancing the production of various secondary metabolites. We introduced the MYB transcription factor Antirrhinum Rosea1 (AmROS1) or Delila (AmDEL) into S. miltiorrhiza and observed that antioxidant activity in transgenic plants increased by 1.40 to 1.80-fold. The total content was significantly higher in transformants compared to the c

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Wu, Shutian, Runhong Mo, Ruohui Wang, Qingyang Li, Danyu Shen, and Yihua Liu. "Identification of Key Antioxidants of Free, Esterified, and Bound Phenolics in Walnut Kernel and Skin." Foods 12, no. 4 (2023): 825. http://dx.doi.org/10.3390/foods12040825.

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Walnut is a natural source of antioxidants. Its antioxidant capacity is determined by the distribution and composition of phenolics. The key phenolic antioxidants in various forms (free, esterified, and bound) in walnut kernel (particularly seed skin) are unknown. The phenolic compounds in twelve walnut cultivars were analyzed using ultra-performance liquid chromatography coupled with a triple quadrupole mass spectrometer in this study. A boosted regression tree analysis was used to identify the key antioxidants. Ellagic acid, gallic acid, catechin, ferulic acid, and epicatechin were abundant

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El-Ghorab, Ahmed H., Fathy A. Behery, Mohamed A. Abdelgawad, et al. "LC/MS Profiling and Gold Nanoparticle Formulation of Major Metabolites from Origanum majorana as Antibacterial and Antioxidant Potentialities." Plants 11, no. 14 (2022): 1871. http://dx.doi.org/10.3390/plants11141871.

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Origanum majoranum L. is a Lamiaceae medicinal plant with culinary and ethnomedical applications. Its biological and phytochemical profiles have been extensively researched. Accordingly, this study aimed to investigate the chemical composition and the antibacterial and antioxidant properties of O. majoranum high features, as well as to search for techniques for activity optimization. A metabolomics study of the crude extract of O. majoranum using liquid chromatography-high-resolution electrospray ionization mass spectrometry (LC ± HR ± ESI ± MS) was conducted. Five fractions (petroleum ether,

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Campidelli, M. L. L., J. D. S. Carneiro, E. C. Souza, et al. "Effects of the drying process on the fatty acid content, phenolic profile, tocopherols and antioxidant activity of baru almonds (Dipteryx alata Vog.)." Grasas y Aceites 71, no. 1 (2020): 343. http://dx.doi.org/10.3989/gya.1170182.

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This study carried out a chromatographic and spectrophotometric characterization of the bioactive compounds, antioxidants, phenolics, tocopherols, sterols and fatty acids of baru almonds “in natura” and submitted to drying processes. It was determined that baru “in natura” almonds presented high levels of phenolic compounds, vitamin C, antioxidants, phenolics, sterols, total monounsaturated fatty acids and low thrombogenic, and atherogenic indexes. During the process of drying it at 65 °C for 30 minutes, a decrease was noted in the levels of caffeic acid, chlorogenic acid, anthocyanins, p-coum

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Nguyen, Trang H. D., Danh C. Vu, Sophie Alvarez, et al. "Comparative Examination of Phytonutrients and Antioxidant Activity of Commonly Consumed Nuts and Seeds Grown in Vietnam." Horticulturae 8, no. 6 (2022): 521. http://dx.doi.org/10.3390/horticulturae8060521.

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The aim of the present study was to determine the phenolics, carotenoids, B-vitamins, and antioxidant activity of nuts and seeds grown in Vietnam. The concentrations of carotenoids and B-vitamins may vary among the nuts and seeds. Watermelon seed contained the highest level of lutein while pumpkin seed was the β-carotene richest sample. Sachi inchi and sunflower seed comprised considerable levels of vitamin B1, B6, and B9. The phenolic analysis revealed that cashew contained the highest total amount of flavonoids (466.04 μg/g), with catechin, epicatechin, and procyanidin B2 predominating over

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Goławska, Sylwia, Iwona Łukasik, Adrian Arkadiusz Chojnacki, and Grzegorz Chrzanowski. "Flavonoids and Phenolic Acids Content in Cultivation and Wild Collection of European Cranberry Bush Viburnum opulus L." Molecules 28, no. 5 (2023): 2285. http://dx.doi.org/10.3390/molecules28052285.

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Guelder rose (Viburnum opulus L.) is known for its health benefits. V. opulus contains phenolic compounds (flavonoids and phenolic acids), a group of plant metabolites with wide biological activities. They are good sources of natural antioxidants in human diets owing to their prevention of the oxidative damage responsible for many diseases. In recent years, observations have shown that an increase in temperature can change the quality of plant tissues. So far, little research has addressed the problem of the common impact of temperature and place of occurrence. Towards a better understanding o

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Zhao, Yunyun, Chong Xie, Pei Wang, Zhenxin Gu, and Runqiang Yang. "GABA Regulates Phenolics Accumulation in Soybean Sprouts under NaCl Stress." Antioxidants 10, no. 6 (2021): 990. http://dx.doi.org/10.3390/antiox10060990.

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NaCl stress causes oxidative stress in plants; γ-aminobutyric acid (GABA) could alleviate such abiotic stress by enhancing the synthesis of phenolics, but the underlying mechanism is not clear. We investigated the effects of GABA on phenolics accumulation in soybean sprouts under NaCl stress by measuring changes in the content of physiological biochemicals and phenolic substances, in the activity and gene expression of key enzymes, and in antioxidant capacity. GABA reduced the oxidative damage in soybean sprouts caused by NaCl stress and enhanced the content of total phenolics, phenolic acids,

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Valentina, Usenik, Star Franci, and Kastelec Damijana. "How does sharka affect the phenolics of plum fruit (Prunus domestica L.)?" Horticultural Science 44, No. 2 (2017): 64–72. http://dx.doi.org/10.17221/196/2015-hortsci.

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Plum pox virus (PPV), the causal agent of the sharka disease, is the most important viral disease in plums. To understand plant defense response against PPV-infection, changes in the composition of phenolics were studied in plum fruit (Prunus domestica L.). The phenolics were determined in visually undeformed and necrotic tissue during the last three ripening stages. The results indicated a significantly modified composition of anthocyanins, flavonols and hydroxycinnamic acids, in necrotic tissue the most. The phenolics differed significantly also between developmental stages and give insight

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Malenica, Mladenka, Magdalena Biesaga, Sandra Pedisić, and Lara Saftić Martinović. "Stability of Propolis Phenolics during Ultrasound-Assisted Extraction Procedures." Foods 13, no. 13 (2024): 2020. http://dx.doi.org/10.3390/foods13132020.

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Propolis has gained popularity in recent years as a potential preventive and therapeutic agent due to its numerous health benefits, which include immune system boosting, blood pressure lowering, allergy treatment, and skin disease treatment. The pharmacological activity of propolis is primarily attributed to phenolics and their interactions with other compounds. Given that phenols account for most of propolis’s biological activity, various extraction methods are being developed. The resin–wax composition of the propolis matrix necessitates the development of an extraction procedure capable of

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