Готові списки джерел за темами / Phenolic phytochemicals

Добірка наукової літератури з теми "Phenolic phytochemicals"

Автор: Grafiati
Опубліковано: 10 січня 2023
Оновлено: 28 січня 2023

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Статті в журналах з теми "Phenolic phytochemicals":

1

Taulavuori, Kari, Riitta Julkunen-Tiitto, Valtteri Hyöky, and Erja Taulavuori. "Blue Mood for Superfood." Natural Product Communications 8, no. 6 (June 2013): 1934578X1300800. http://dx.doi.org/10.1177/1934578x1300800627.

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The term superfood refers to food with high levels of either nutrient or bioactive phytochemicals with human health benefits. Phytochemicals are naturally occurring compounds in plants that provide their color, flavor and odor. Phenolic compounds form the major constituents of phytochemicals. Plant traits in phytochemical production are tightly bound with the genome while modified markedly by the environmental conditions. Here, we studied the effect of supplemented blue light on the production of several phenolics in the leaves of tomato, basil and parsley, which are widely cultivated food plant species. The results indicated doubled or higher increases in the accumulation of several species-specific phenolic acids or flavonoids. In conclusion, we showed for the first time, that supplemented blue light results in high yield improvement of phytochemicals related to superfood products.
2

Mascarenhas, Maria Emilia, Cibani Ramesh Mandrekar, Pratiksha Bharat Marathe, and Luena Joey Morais. "PHYTOCHEMICAL SCREENING OF SELECTED SPECIES FROM CONVOLVULACEAE." International Journal of Current Pharmaceutical Research 9, no. 6 (November 14, 2017): 94. http://dx.doi.org/10.22159/ijcpr.2017v9i6.23438.

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Objective: To screen phytochemicals from stems and leaves of 23 selected taxa of Convolvulaceae.Methods: Stem and leaves of the selected 23 taxa were collected and shade dried. Methanol extract was used for preliminary screening of phytochemicals such as alkaloids, carbohydrates, glycosides, saponins, proteins, phytosterols, tepenoids, fixed oils, phenolic compounds, flavonoids and tannins.Results: Phytochemicals were present in all selected taxa of Convolvulaceae. Leaves showed most of the phytochemicals than stems. The important phytochemicals in leaves were flavonoids, carbohydrates, alkaloids, saponins, tannins and phenolic compounds while those in stems were carbohydrates, saponins and phenolic compounds. Proteins and fixed oils were absent in the taxa studied.Conclusion: Phytochemical screening in the present study, revealed that maximum phytochemicals were present in leaves than in stems.
3

Sharma, Swati. "PHYTOCHEMICAL SCREENING AND QUANTITATIVE ESTIMATION OF TOTAL PHENOLIC CONTENT AND TOTAL FLAVONOID CONTENT OF GRAINS OF PASPALUM SCROBICULATUM." Asian Journal of Pharmaceutical and Clinical Research 9, no. 6 (November 1, 2016): 73. http://dx.doi.org/10.22159/ajpcr.2016.v9i6.13552.

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Paspalum scrobiculatum, commonly known as ‘Kodo’ is a millet variety found in India having medicinal and pharmaceutical importance. Crude extracts of chloroform, ethyl acetate, ethanol and methanol were evaluated for the presence of total phenolic content and total flavonoid content of the millet grains. Phytochemical screening was done for a qualitative basis of the study. Phytochemical tests showed the presence of phenolics and flavonoids in more polar solvent, methanol and ethanol. Carbohydrates and fats and oils were present in all four extracts. The result of total phenolic content by Folin- ciocalteu method with gallic acid as standard at 765 nm ranged from 40.15 ± 0.17 to 175.94 ± 1.018 µg/100µg extract. Ethanol extract showed maximum phenolic content. The total flavonoid content at 510 nm using rutin as standard ranged from 4.88 ± 0.50 to 116.48 ± 1.57 µg/100µg extract. Highest flavonoid content was found in ethanol extract. Presence of good amount of phenolic and flavonoid content indicates presence of phytochemicals in kodo millet having good antioxidant potential.Keywords: Paspalum scrobiculatum, Phytochemical, TPC, TFC, Ethanol, etc.
4

Habauzit, Véronique, and Marie-Noëlle Horcajada. "Phenolic phytochemicals and bone." Phytochemistry Reviews 7, no. 2 (November 21, 2007): 313–44. http://dx.doi.org/10.1007/s11101-007-9078-9.

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5

Bolling, Bradley W., C. Y. Oliver Chen, Diane L. McKay, and Jeffrey B. Blumberg. "Tree nut phytochemicals: composition, antioxidant capacity, bioactivity, impact factors. A systematic review of almonds, Brazils, cashews, hazelnuts, macadamias, pecans, pine nuts, pistachios and walnuts." Nutrition Research Reviews 24, no. 2 (December 2011): 244–75. http://dx.doi.org/10.1017/s095442241100014x.

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Tree nuts contain an array of phytochemicals including carotenoids, phenolic acids, phytosterols and polyphenolic compounds such as flavonoids, proanthocyanidins (PAC) and stilbenes, all of which are included in nutrient databases, as well as phytates, sphingolipids, alkylphenols and lignans, which are not. The phytochemical content of tree nuts can vary considerably by nut type, genotype, pre- and post-harvest conditions, as well as storage conditions. Genotype affects phenolic acids, flavonoids, stilbenes and phytosterols, but data are lacking for many other phytochemical classes. During the roasting process, tree nut isoflavones, flavanols and flavonols were found to be more resistant to heat than the anthocyanins, PAC and trans-resveratrol. The choice of solvents used for extracting polyphenols and phytosterols significantly affects their quantification, and studies validating these methods for tree nut phytochemicals are lacking. The phytochemicals found in tree nuts have been associated with antioxidant, anti-inflammatory, anti-proliferative, antiviral, chemopreventive and hypocholesterolaemic actions, all of which are known to affect the initiation and progression of several pathogenic processes. While tree nut phytochemicals are bioaccessible and bioavailable in humans, the number of intervention trials conducted to date is limited. The objectives of the present review are to summarise tree nut: (1) phytochemicals; (2) phytochemical content included in nutrient databases and current publications; (3) phytochemicals affected by pre- and post-harvest conditions and analytical methodology; and (4) bioactivity and health benefits in humans.
6

Fang, Haitian, Huiling Zhang, Xiaobo Wei, Xingqian Ye, and Jinhu Tian. "Phytochemicals and Antioxidant Capacities of Young Citrus Fruits Cultivated in China." Molecules 27, no. 16 (August 15, 2022): 5185. http://dx.doi.org/10.3390/molecules27165185.

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Fruits of six varieties of young citrus cultivated in China were collected for phytochemical composition analysis and antioxidant activity determination. The phenolic acids, synephrine, flavone, and flavanone were analyzed using HPLC, and the total phenolic content and antioxidant capacity were determined by Folin-Ciocalteu, Ferric ion reducing antioxidant power (FRAP), 2,2- 1,1-diphenyl-2-picrylhydrazyl (DPPH), and 2,2′-azino-bis-3-ethylbenzthiazoline-6-sulphonic acid (ABTS) analysis. The results indicated that Ougan variety had the highest total phenolic content (125.18 GAE mg/g DW), followed by the Huyou variety (107.33 mg/g DW), while Wanshuwenzhoumigan variety had the lowest (35.91 mg/g DW). Ferulic acid was the most dominant soluble phenolic acid in the selected young citrus, followed by p-coumaric acid and p-hydroxybenzoic acid, whereas nobiletin and tangeretin were the most abundant flavones in the Ponkan, Ougan, and Wanshuwenzhoumigan varieties. Antioxidant capacity that measured by ABTS, FRAP, and DPPH showed similar trends and was positively correlated with the total phenolic and total flavonoid contents (p < 0.05). Considering the high content of phenolics in the young fruits of Ougan and Huyou variety, those two varieties might be potential resources for extracting phytochemicals for health promotion.
7

Amiot, Marie-Josèphe, Christian Latgé, Laurence Plumey, and Sylvie Raynal. "Intake Estimation of Phytochemicals in a French Well-Balanced Diet." Nutrients 13, no. 10 (October 16, 2021): 3628. http://dx.doi.org/10.3390/nu13103628.

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Phytochemicals contribute to the health benefits of plant-rich diets, notably through their antioxidant and anti-inflammatory effects. However, recommended daily amounts of the main dietary phytochemicals remain undetermined. We aimed to estimate the amounts of phytochemicals in a well-balanced diet. A modelled diet was created, containing dietary reference intakes for adults in France. Two one-week menus (summer and winter) were devised to reflect typical intakes of plant-based foods. Existing databases were used to estimate daily phytochemical content for seven phytochemical families: phenolic acids, flavonoids (except anthocyanins), anthocyanins, tannins, organosulfur compounds, carotenoids, and caffeine. The summer and winter menus provided 1607 and 1441 mg/day, respectively, of total polyphenols (phenolic acids, flavonoids, anthocyanins, and tannins), the difference being driven by reduced anthocyanin intake in winter. Phenolic acids, flavonoids (including anthocyanins), and tannins accounted for approximately 50%, 25%, and 25% of total polyphenols, respectively. Dietary carotenoid and organosulfur compound content was estimated to be approximately 17 and 70 mg/day, respectively, in both seasons. Finally, both menus provided approximately 110 mg/day of caffeine, exclusively from tea and coffee. Our work supports ongoing efforts to define phytochemical insufficiency states that may occur in individuals with unbalanced diets and related disease risk factors.
8

Srivastava, Neeharika, Aishwarya Singh Chauhan, and Bechan Sharma. "Isolation and Characterization of Some Phytochemicals from Indian Traditional Plants." Biotechnology Research International 2012 (December 11, 2012): 1–8. http://dx.doi.org/10.1155/2012/549850.

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The present study was designed to evaluate relative contribution of different polyphenols (total phenolics, flavonoids, flavonols) and their antioxidants activities in aqueous extracts of different parts of some plants; Argemone mexicana, Datura metel, Calotropis procera, Thevetia peruviana, and Cannabis sativa. The antioxidants (total phenolics, flavonoids, flavones) were determined by chemical methods. The antioxidant capacities of these extracts were evaluated by FRAP assay. The results demonstrated that phenolic content was maximally present in leaves of T. peruviana. This plant exhibited minimum phenolic content in its flower as compared to other plants. The flower of D. metel contained maximum phenolic content. The flavonoids were present in highest quantity in leaves of C. procera while T. peruviana flowers showed maximum flavonoid content. The fruits of C. sativa contained maximum quantity of flavonoid as compared to other plants tested. The flower extract of C. sativa possessed highest FRAP value followed by A. mexicana and fruit of C. procera. The values of ratios of different polyphenolic compounds present in plant extracts indicated that flower of D. metel contained maximum total flavonoids and minimum phenolics. These results suggested that levels of total phenolics, flavonoids and their FRAP indices exhibited specificity to different plants and their parts.
9

Prasad, Nagendra, Bao Yang, Kin Weng Kong, Hock Eng Khoo, Jian Sun, Azrina Azlan, Amin Ismail, and Zulfiki Bin Romli. "Phytochemicals and Antioxidant Capacity fromNypa fruticansWurmb. Fruit." Evidence-Based Complementary and Alternative Medicine 2013 (2013): 1–9. http://dx.doi.org/10.1155/2013/154606.

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Nypa fruticansWurmb. is one of the important underutilized fruit of Malaysia, which lacks scientific attention. Total phenolics, flavonoid content, and antioxidant capacities from endosperm extracts ofNypa fruticans(unripe and ripe fruits) were evaluated. Endosperm extract of unripe fruits (EEU) exhibited the highest phenolics (135.6 ± 4.5 mg GAE/g), flavonoid content (68.6 ± 3.1 RE/g), and antioxidant capacity. Free radical scavenging capacity of EEU as assessed by 2-2′-azino-bis (3-ethylbenz-thiazoline-6-sulfonic acid (ABTS) and 1,1-diphenyl-2-picryl hydrazyl (DPPH) radicals showed inhibitory activity of78±1.2% and85±2.6%, respectively. Beta carotene bleaching coefficient of EEU was higher (2550±123), when compared to endosperm extract of ripe fruits (1729±172). Additionally, EEU exhibited high antioxidant capacity by phosphomolybdenum method and ferric reducing antioxidant power values. Eight phenolic compounds fromNypa fruticansendosperm extracts were identified and quantified by ultra-high-performance liquid chromatography. Chlorogenic acid, protocatechuic acid, and kaempferol were the major phenolic compounds. Thus this fruit could be used as a potential source of natural antioxidant.
10

Gebashe, Fikisiwe, Adeyemi O. Aremu, Jiri Gruz, Jeffrey F. Finnie, and Johannes Van Staden. "Phytochemical Profiles and Antioxidant Activity of Grasses Used in South African Traditional Medicine." Plants 9, no. 3 (March 17, 2020): 371. http://dx.doi.org/10.3390/plants9030371.

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Grasses are a valuable group of monocotyledonous plants, used as nourishing foods and as remedies against diseases for both humans and livestock. Phytochemical profiles of 13 medicinal grasses were quantified, using spectrophotometric methods and ultra-high-performance liquid chromatography–tandem mass spectrometry (UHPLC–MS), while the antioxidant activity was done using DPPH and ferric-reducing-power assays. The phytochemical analysis included the total soluble phenolic content, flavonoids, proanthocyanidins, iridoids and phenolic acids. Among the 13 grasses, the root methanolic extracts of Cymbopogon spp., Cymbopogon nardus and Cenchrus ciliaris contained the highest concentrations of total soluble phenolics (27–31 mg GAE/g DW) and flavonoids (4–13 mg CE/g DW). Condensed tannins and total iridoid content were highest (2.3 mg CCE/g DW and 3.2 mg HE/g DW, respectively) in Cymbopogon nardus. The most common phenolic compounds in the grass species included ρ-coumaric, ferulic, salicylic and vanillic acids. In the DPPH radical scavenging assay, the EC50 values ranged from 0.02 to 0.11 mg/mL for the different grasses. The best EC50 activity (lowest) was exhibited by Cymbopogon nardus roots (0.02 mg/mL) and inflorescences (0.04 mg/mL), Cymbopogon spp. roots (0.04 mg/mL) and Vetiveria zizanioides leaves (0.06 mg/mL). The highest ferric-reducing power was detected in the whole plant extract of Cynodon dactylon (0.085 ± 0.45; r2 = 0.898). The observed antioxidant activity in the various parts of the grasses may be due to their rich pool of phytochemicals. Thus, some of these grasses provide a source of natural antioxidants and phytochemicals that can be explored for their therapeutic purposes.
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Статті в журналах Дисертації

Дисертації з теми "Phenolic phytochemicals":

1

Vizzotto, Marcia. "Inhibition of invasive breast cancer cell growth by selected peach and plum phenolic antioxidants." Texas A&M University, 2005. http://hdl.handle.net/1969.1/3284.

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Fruits and vegetables are known to play an important role in human health due to the range of phytochemicals they contain. Twenty-one peach genotypes and 45 plum genotypes with different flesh and skin color were analyzed for their antioxidant content and antioxidant activity. Anthocyanin content, phenolic content and antioxidant activity were higher in red-flesh than in light-colored flesh peaches. Carotenoid content was higher in yellow-flesh peaches. Among the peaches, the antioxidant activity was well correlated with phenolic content. The anthocyanin content among the plums increased with the red color intensity. Red-flesh plums generally had higher phenolic content than the other plums. Antioxidant activity was higher in red-flesh genotypes; however, it was strongly correlated only with the phenolic content in light-colored flesh plums. Extracts from selected genotypes of peaches and plums and their fractions were evaluated against two breast cancer cell lines (MDA-MB-435 and MCF-7) and one non-cancerous breast line (MCF-10A). The cells were cultured in the presence of peach and plum extracts and their fractions at various concentrations (0-500 µg/ml) and the cell viability and antiproliferation activity was evaluated by MTT assay and Coulter Counter. There was a dose-dependent reduction on cell viability of estrogen-negative MDA-MB-435 breast cancer cells. Only weak activity against MCF-7 was observed at high extract concentrations. There was no activity against MCF-10A after 24 h treatment. Fraction I, which consists of mainly phenolic acids such as chlorogenic acid and a caffeic acid derivative, reduces MDA-MB-435 breast cancer cell viability with the lowest IC50. The second most effective fraction was Fraction II which contained anthocyanins. Fraction III (flavonols) and Fraction IV (polymerized compounds) had no effect on the cell lines. Phenolic acids present in fraction I induced apoptosis in MDA-MB-435 estrogen receptor-negative cell line. Fraction I did not induced apoptosis in MCF-10A, a noncancerous cell line even at higher concentrations than the ones tested in MDA-MB- 435. Apoptosis induced by Fraction I was caspase 3 and PARP independent. After treatment with 50 µg of chlorogenic acid equivalent/ml there was an activation of p- ERK.
2

Girlus, Elena Valeria. "Protective activity of phytochemicals from natural extracts." Master's thesis, Instituto de Tecnologia Química e Biológica António Xavier. Universidade Nova de Lisboa, 2016. http://hdl.handle.net/10362/43593.

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The rise in the incidence of neurodegenerative diseases leads to an increased demand for the development of alternative therapeutic strategies. Phytochemicals have proved beneficial effects for human health, exerting protective roles towards several diseases including neurodegenerative disorders. Thus, the search for new bioactivities is a field in constant growth. The beet and fruits belonging to Opuntia spp. are rich in betalains and phenolic compounds, which confer several benefits to human health such as regulators of antioxidant and anti-inflammatory responses as well as potential protective effect for chronic diseases.
info:eu-repo/semantics/publishedVersion
3

Deakin, Sherine Jane. "Antioxidant effects of phytochemicals in conditions of oxidative stress : impact on endothelial cell survival and function." Thesis, University of Aberdeen, 2010. http://digitool.abdn.ac.uk:80/webclient/DeliveryManager?pid=165549.

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Two dietary polyphenols, delphinidin and resveratrol, were selected for this study; delphinidin, an anthocyanin flavonoid, was found to elicit cardioprotective properties from a pilot study and resveratrol, a stilbene flavonoid, one of the most studied of the polyphenols and was chosen as a worthy comparator. In vitro studies using cultured endothelial cells exposed to a variety of reactive oxygen species (ROS) were used to determine if delphinidin and resveratrol could protect these cells from oxidative damage. It was found that physiological concentrations of delphinidin protected these cells from hydroxyl-radical damage. However, resveratrol failed to show any protective effects. Oxidative stress was induced in porcine coronary artery using diethyldithiocarbamate (DETCA), an inhibitor of the superoxide dismutase (SOD). Sensitivity to nitric oxide (NO) was preserved in endothelium-denuded vessels that were pre-treated with delphinidin, but not with resveratrol. However, studies where a balloon catheter was used to induce injury to the endothelium, delphinidin pre-treatment did not preserve sensitivity to NO in these vessels. Taken together, these results suggest that delphinidin, but not resveratrol, has potential to protect the endothelium from oxidative stress by preserving/protecting NO bioavailability and by acting directly as an antioxidant or indirectly upregulating antioxidant systems.
4

Herrera-Calderon, Oscar, Jorge Arroyo-Acevedo, Juan Rojas-Armas, Victor Chumpitaz-Cerrate, Linder Figueroa-Salvador, Edwin Enciso-Roca, and Johnny Tinco-Jayo. "Phytochemical Screening, Total Phenolic Content, Antioxidant and Cytotoxic Activity of Chromolaena laevigata on Human Tumor Cell Lines." SCIENCEDOMAIN international, 2017. http://hdl.handle.net/10757/622501.

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Aims: Cancer is the first cause of death in the Peruvian population; searching alternative treatments of medicinal plants constitute a promissory field to find new anticancer drugs. The main objective in this study was to evaluate the phytochemical screening, total phenolic content, antioxidant and cytotoxic activity of ethanol extract of Chromolaena laevigata (C. laevigata) on human tumor cell lines. Study Design: The fresh leaves of C. laevigata were soaked with ethanol followed by phytochemical screening using standard methods. Place and Duration of Study: Laboratory of Applied Chemistry, Faculty of Pharmacy and Biochemistry, Universidad Nacional San Luis Gonzaga de Ica, Ica, Peru; Laboratory “Abraham Vaisberg Wolach”, Universidad Peruana Cayetano Heredia, Lima, Peru. Methodology: Phytochemical screening was assessed by using chemical reactives. Total phenolic content (TPC) was developed using Folin Ciocalteu reactive and the antioxidant activity was determined against DPPH and ABTS radicals by spectrophotometry. The cytotoxic activity was determined on human tumor cell lines followed as: MCF-7, H-460, HT-29, M-14, K-562 and DU-145. Results: Phytochemical study confirmed flavonoids and phenolic compounds in ethanol extract. TPC resulted 45.21 ± 3.5 mg of gallic acid equivalent/g of dried extract. The highest antioxidant extract for DPPH and ABTS radical scavenging tests were IC50 = 11.66 ± 1.0 μg/mL, IC50= 12.45 ± 0.50 μg/mL respectively. Ethanolic extracts (μg/mL) showed a low cytotoxicity on human tumor cell lines (CI50 > 20 μg/mL) for DU-145, HT-29, MCF-7 and M-14. Whereas, for H-460, and K562 tumor cell lines showed high cytotoxicity. Conclusion: In our findings, C. laevigata demonstrated a high antioxidant and total phenolic content. The ethanol extract exhibited better cytotoxic effect compared with 5-FU. Hence, This medicinal plant could be effective to prevent chronical diseases as cancer and oxidative stress disorders.
5

Mat, Ali Mohd Shukri. "Analysis of phenolics and other phytochemicals in selected Malaysian traditional vegetables and their activities in vitro." Thesis, Connect to e-thesis, 2008. http://theses.gla.ac.uk/158/.

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Thesis (Ph.D.) - University of Glasgow, 2008.
Ph.D. thesis submitted to the Division of Biochemistry and Molecular Biology, Institute of Biomedical and Life Sciences, University of Glasgow, 2008. Includes bibliographical references. Print version also available.
6

Takaidza, Samkeliso. "Phytochemical analysis and biological activities of crude extracts from selected Tulbaghia species." Thesis, Vaal University of Technology, 2018. http://hdl.handle.net/10352/434.

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PhD (Department of Biotechnology, Faculty of Applied and Computer Sciences), Vaal Universtiy of Technology
The genus Tulbaghia has been used in traditional medicine to treat various ailments such as fever, earache, tuberculosis and esophageal cancer. However, there is limited scientific evidence to support its use. Therefore the objectives of this study were to perform phytochemical analysis, investigate the antioxidant, antimicrobial, anticancer, immunomodulatory activities and toxicity of crude acetone and water extracts from selected Tulbaghia species. Standard methods were used for preliminary phytochemical analysis. The total phenolic content of the plant extracts was determined using the folin ciocalteu method whereas the total flavonoids were determined by using the aluminium chloride colorimetric method. DPPH and ABTS assays were used to evaluate the antioxidant activity. The antimicrobial activity was assessed by agar well diffusion, microtiter dilution and time kill assays. For anticancer studies, the antiproliferative activity of the extracts was evaluated using the MTT assay on Hkesc-1 and KB cells. Morphological changes of the cancer cells treated with extracts were examined using light microscopy. Induction of apoptosis was assessed using fluorescence microscopy and acridine orange/ethidium bromide staining. Flow cytometry analysis was conducted to examine the multicaspase activity and cell cycle arrest. For immunomodulatory activity, the Greiss reagent and Luminex cytokine assays were used to determine the effect of the extracts on NO production and the concentration of the cytokines in the treated cells, respectively. Toxicity of selected Tulbaghia species was examined by investigating the effect of the extracts on the metabolic activity and cell membrane integrity on the treated RAW264.7 cells using the MTT and LDH assays, respectively. The zebrafish assay was used to evaluate the embryotoxicity and teratogenic effects of crude acetone and water extracts of T. violacea at 24 h intervals for 96 h post fertilisation (hpf). The percentage mortality, hatchability and heart rate were examined. Phytochemical screening of eight Tulbaghia species demonstrated the presence of flavonoids, glycosides, tannins, terpenoids, saponins and steroids. The amount of total phenol and flavonoid content varied in different plant extracts ranging from 4.50 to 11.10 milligrams gallic acid equivalent per gram (mg GAE/g) of fresh material and 3.04 to 9.65 milligrams quercetin equivalent per gram (mg QE/g) of fresh material respectively. The IC50 values based on DPPH and ABTS for T. alliacea (0.06 and 0.06 mg/mL) and T. violacea (0.08 and 0.03 mg/mL) were generally lower showing potential antioxidant activities. For antimicrobial activity, the acetone extracts of T. acutiloba, T. alliacea, T. leucantha, T. ludwigiana, T. natalensis and T. simmleri showed moderate antimicrobial activity against all test organisms while the water extracts showed moderate to no activity. One species, T. cernua, showed poor activity against all the tested microbes. The acetone and water extracts of T. violacea showed the greatest antibacterial and antifungal activity against all the tested microorganisms with minimum inhibitory concentration ranging from 0.1 mg/mL to 3.13 mg/mL. The acetone extracts of T. violacea also exhibited both bacteriostatic/fungistatic and bactericidal/fungicidal activity depending on the incubation time and concentration of the extract. The bactericidal/fungicidal activity was observed at x2 MIC. The results for anticancer activity showed that treatment of Hkesc-1 cells with acetone and water crude extracts had anti-proliferative activity with IC50 values of 0.4 mg/mL and 1.625 mg/mL, respectively while KB had 0.2 mg/mL and 1 mg/mL, respectively. Morphological changes such as blebbing, cell shrinkage and rounding were observed in the treated cells suggesting that apoptosis was taking place. AOEB staining showed that the level of apoptosis was dependent on the concentration of the extracts. The activation of multicaspase activity in both Hkesc-1 and KB treated cells was also concentration dependent leading to cell death by apoptosis and the induction of cell cycle arrest at the G2/M phase. Immunomodulatory activity results indicated that cell viability was above 80% when concentrations of 50 µg/mL or less of both acetone and water crude was used. Treatment with the acetone extract had no significant effect (p>0.05) on the LPS induced NO production in RAW264.7 cells except at 50 µg/mL where significant inhibition was observed. The water extract had no significant effect (p>0.05) on NO production at all the concentrations. Treatment of LPS–induced RAW264.7 cells with acetone extract stimulated the production of IL-1α, IL-6 and TNF-α, but had no significant effect (p > 0.05) on IL-1β. On the other hand, treatment with the water extracts stimulated the production of IL-1α, IL-6 but had no significant effect (p>0.05) on TNF-α and IL-1β. Treatment of LPS-induced RAW264.7 cells with the acetone extract had very little stimulatory effect on IL-4, IL-5 and IL-13 and no significant effect on IL-10 whereas for the water extract a significant stimulatory effect was only observed for IL-4 after 48 h of treatment. High concentrations (>10000 pg/mL) of MCP-1, MIP1-α, MIP1-β, MIP-2, GCSF, GM-CSF, RANTES and IP-10 were also observed in acetone and water extract treated RAW264.7 cells. For toxicity studies, acetone and aqueous crude leaf extracts from T. alliacea, T. simmleri, and T. violacea had a significant inhibitory (p<0.05) effect on the RAW264.7 cells after 48h treatment. Acetone extracts from T. alliacea, T. simmleri and T. violacea resulted in IC50 values of 0.48 mg/mL, 0.72 mg/mL and 0.1 mg/mL, respectively. Treatment with water extracts showed minimal toxic effect indicated by higher IC50 values of 0.95 mg/mL, 2.49 mg/mL and 0.3 mg/mL for T. alliacea, T. simmleri and T. violacea, respectively. The LDH release by macrophages after 24 h treatment with acetone extracts was observed to be concentration dependent while treatment with water extracts did not induce LDH release. The zebra fish assay showed a lethal dose (LD50) for the T. violacea acetone crude extract of 20 μg/mL whereas that for water extract was 85 μg/mL. The observed teratogenic effects included scoliosis, edema of the pericardial cavity, retarded yolk resorption, hook-like/bent tail and shorter body length. In conclusion, the results from this study indicate that the extracts from the eight Tulbaghia species examined contain phytochemicals that may have the antioxidant, antimicrobial, anticancer and immunomodulatory properties. Extracts from T. violacea were observed to be the most potent. This study thus supports the use of T. violacea in treating bacterial and fungal infections in traditional medicine. The results of this study also confirm the anticancer potential of T. violacea. The immunomodulatory activity of the acetone and water extracts from T. violacea indicated a dominantly pro-inflammatory activity. Traditional medicine prepared form T. violacea may be of benefit to individuals with weak immune systems. The toxicity of selected Tulbaghia species was observed to be concentration, extract and time dependent. Therefore, traditional medicine prepared from Tulbaghia extracts should be taken with caution preferably in small doses over a short period of time. Future studies will focus on the identification of the bioactive compound(s) responsible for the antimicrobial, anticancer and immunomodulatory activities.
7

Oh, Myungmin. "Plant adaptation and enhancement of phytochemicals in lettuce in response to environmental stresses." Diss., Manhattan, Kan. : Kansas State University, 2008. http://hdl.handle.net/2097/673.

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8

Bumbliauskinė, Jankauskaitė Lina. "Study of Perilla L. species and varieties cultivation, phytochemical composition and biological effect." Doctoral thesis, Lithuanian Academic Libraries Network (LABT), 2011. http://vddb.laba.lt/obj/LT-eLABa-0001:E.02~2011~D_20110309_111240-41438.

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Perilla L. are significant for multi-pharmacological effect. The aim of this work is to study Perilla L. growth and develop¬ment tendencies, productivity; composition of biologically active compounds and their variations during the vegetation period, and the biological effect of the extracts; to select perspective plants for cultivation in Lithuania and for production of medicinal preparations. The objectives of the Study: To investigate and determine growth dynamics of Perilla L. species and varieties during the vegetation period and to assess the influence of climate conditions on the vegetation rhythmic. To assess the quantity dynamics of Perilla L. species and varieties herbal medicinal raw material and to compare the productivity of Perilla L. species and varieties. To determine the quantity of the essential oil in Perilla L. species and varieties and to identify the chemotypes of the plants. To determine the qualitative composition and variation dynamics of the phenolic acids in Perilla L. species and varieties. To determine the composition and variation dynamics of the flavone complex in Perilla L. species and varieties. To determine the composition and variation dynamics of antho¬cyanidines in Perilla L. species and varieties. To assess the radical scavenging activity of the extracts of Perilla L. species and varieties raw materials. To research the effect of Perilla L. extracts on the oxidative phosphorylation in the rat heart mitochondria.
Perilla L. genties vienmečiai vaistiniai augalai yra augaliniai imunomoduliatoriai, pasižymintys daugeliu farmakologinių poveikių. Darbo tikslas: Ištirti Vidurio Lietuvoje auginamų Perilla L. rūšių ir varietetų augimo ir vystymosi dėsningumus, biologiškai aktyvių junginių sudėtį ir jų įvai¬ravimą vegetacijos metu bei ekstraktų biologinį poveikį; atrinkti perspek¬tyvius augalus auginimui Lietuvoje. Uždaviniai: Ištirti ir nustatyti Perilla L. augimo dinamiką vegetacijos metu ir įvertinti klimatinių veiksnių įtaką augalų vegetacijai. Įvertinti Perilla L. vaistinės augalinės žaliavos kiekio dinamiką vege¬tacijos metu ir palyginti Perilla L. rūšių ir varietetų produk¬tyvumą. Nustatyti Perilla L. rūšių ir varietetų eterinio aliejaus kiekį auga¬luose vegetacijos metu ir identifikuoti augalų chemotipus. Nustatyti Perilla L. rūšių ir varietetų fenolinių rūgščių kokybinę sudėtį ir jų kitimo dėsningumus vegetacijos metu. Nustatyti Perilla L. rūšių ir varietetų flavonų komplekso sudėtį ir kitimo dinamiką vegetacijos metu. Nustatyti Perilla L. rūšių ir varietetų antocianidinų sudėtį bei kitimo dinamiką vegetacijos metu. Įvertinti Perilla L. rūšių ir varietetų žaliavų ekstraktų antiradikalinį aktyvumą. Ištirti Perilla L. rūšių ir varietetų ekstraktų poveikį žiurkės širdies mitochondrijų oksidaciniam fosforilinimui. Tyrimų rezultatai ir poveikiu pasižyminčių junginių identifikavimas atveria perspektyvas ateities tyrimams, kurie reikalingi kuriant preparatus iš perilių augalinių žaliavų.
9

Talag, Agela Hussain Mohammed. "Phytochemical investigation and biological activities of Sanicula europaea and Teucrium davaeanum : isolation and identification of some constituents of Sanicula europaea and Teucrium davaeanum and evaluation of the antioxidant activity of ethanolic extracts of both plants and cytotoxic activity of some isolated compounds." Thesis, University of Bradford, 2016. http://hdl.handle.net/10454/14482.

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The aim of this research was to investigate the phytochemistry of two species Sanicula europaea and Teucrium davaeanum which are traditionally used in treatment of wounds. Four compounds were isolated from the 80% methanolic extract of S. europaea; bis-(2-ethylhexyl) phthalate (1), palmitic acid (2), rosmarinic acid (3), saniculoside N (4). Compounds 1 and 2 were isolated for the first time from this species. The structure elucidation of the isolated compounds was on the basis of 1D, 2D NMR spectroscopy and mass spectrometry measurements. Two compounds were isolated from the crude glycosides extract of T.davaeanum; 6 is a phenylethanoid glycoside and 8 is an iridoid glycoside, from the data available these may be new compounds for which the names davaeanuside A and davaeanuside B are proposed respectively." The total polyphenol content of S. europaea L, T. davaeanum leaves-flowers and T. davaeanum stem were found to be 5.0, 1.20 and 0.65 mg per 100 mg dried plant material respectively. A study of the antioxidant activity of the 50 % ethanol extracts of S. europaea and T. davaeanum showed that on a mg/mg basis S. europaea and T. davaeanum have approximately 5%, 8 % antioxidant capacity of Trolox respectively. A study of the cytotoxic activity of davaeanuside A (6), iridoid glycoside (7), davaeanuside B (8) and saponin compound (10) isolated from the crude glycosides extract of T. davaeanum revealed that saponin compound (10) inhibited the growth of Hela cells by 50 % at 50 μg/ml, P< 0.001, but the other compounds did not show activities against the tested cell lines at 100 μg/ml. The results of this work provide some basis for the traditional use of these species in the treatment of wounds.
10

Merlin, Nathalie. "Isolamento bioguiado de compostos com atividade antioxidante das folhas de Moringa oleífera." Universidade Tecnológica Federal do Paraná, 2017. http://repositorio.utfpr.edu.br/jspui/handle/1/2284.

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CAPES; Fundação Araucária
A espécie Moringa oleifera (Moringaceae) é uma planta que possui ampla aplicação industrial, alto valor nutricional e que, além disso, também exibe diversas atividades biológicas. Utilizadas na medicina popular, as folhas de M. oleifera já demonstraram possuir grande variedade de moléculas bioativas, inclusive compostos fenólicos, os quais são, possivelmente, os responsáveis pelo potencial antioxidante desta parte da planta. Apesar do crescente interesse sobre a espécie e, especificamente, sobre o seu potencial fitoquímico, são escassos os trabalhos que relatam o isolamento e a identificação dos compostos bioativos presentes nas suas folhas, principalmente em exemplares cultivados no Brasil. Sendo assim, os objetivos deste trabalho foram comparar dois métodos de extração de compostos bioativos e, na sequência, isolar bioguiadamente compostos com atividade antioxidante das folhas de M. oleifera coletadas no município de Itajaí (Santa Catarina, Brasil). O monitoramento bioguiado foi realizado com ensaios in vitro de determinação da atividade antioxidante: capacidade de redução do reagente Folin-Ciocalteau, FRAP, sequestro dos radicais DPPH e ABTS, além do ORAC. A técnica de CLAE-DAD foi utilizada para a caracterização química e acompanhamento das etapas do isolamento. A principal diferença prática entre os métodos de extração avaliados foi o preparo de um extrato hidroalcoólico inicial, no processo de extração 1. A partir dos resultados de determinação da atividade antioxidante, interpretados com o auxílio de ferramentas estatísticas (teste de Tukey e teste t pareado), foi possível perceber que o potencial das folhas de M. oleifera sofreu variações em função da forma de extração e dos solventes utilizados. Em geral, as frações produzidas a partir do processo de extração 1 apresentaram maior atividade antioxidante e perfis cromatográficos com sinais mais intensos. Com base nestes resultados, a fração obtida com acetato de etila, no processo de extração 1, foi selecionada para dar sequência ao isolamento bioguiado. A purificação desta fração em coluna aberta preenchida com sílica gel gerou 61 subfrações, as quais, após análise de CCD, foram agrupadas em 18. A avaliação da atividade antioxidante das subfrações agrupadas mostrou que cinco apresentavam grande potencial. Contudo, em função do rendimento, apenas três puderam dar sequência ao isolamento. Nesta etapa, uma análise adicional foi realizada: a determinação da atividade antioxidante por CLAE on-line com o ABTS•+, que permitiu definir quais dos compostos presentes nas três subfrações possuíam maior potencial e, por isso, seriam isolados. Desta forma, cinco compostos foram isolados pela técnica de CLAE semipreparativa, sendo que dois foram testados frente ao ensaio de sequestro do DPPH•. Os valores de EC50 obtidos, 30,34 e 38,72 μg/mL, estão próximos aos encontrados na literatura para substâncias isoladas de outras matrizes naturais. A técnica de RMN permitiu identificar um flavonol glicosilado. Os resultados deste trabalho mostraram que as folhas de M. oleifera coletadas em Itajaí são fonte de compostos fenólicos com potencial antioxidante e, por isso, promissoras para aplicação nas indústrias de cosméticos, alimentos e farmacêutica.
Moringa oleifera (Moringaceae) is a plant that has wide industrial application, high nutritional value and, also, exhibits several biological activities. Used in folk medicine, M. oleifera leaves have already been shown to possess a wide variety of bioactive molecules, including phenolic componds, which are possibly responsible for the antioxidant potential of this part of the plant. Despite the growing interest in this species and, specifically, in its phytochemical potential, there are few studies about the isolation and identification of bioactive compounds present in M. oleifera leaves, especially in specimens grown in Brazil. Therefore, the aims of this work were to compare two methods for extracting bioactive componds and, than, to isolate compounds with antioxidant activity of M. oleifera leaves collected in Itajaí (Santa Catarina, Brazil) by a bioguided study. The bioguided monitoring was carried out with in vitro assays to determine the antioxidant activity: Folin-Ciocalteau reagent reduction capacity, FRAP assay, DPPH and ABTS radical scavenging methods and, also, the ORAC assay. HPLC-DAD technique was used for chemical characterization and monitoring of the isolation stages. The main practical difference between the evaluated extraction methods was the preparation of an initial hydroalcoholic extract, in the extraction process 1. From the results of the antioxidant activity determination, interpreted with the aid of statistical tools (Tukey’s test and paired t-test), it was possible to see that the potential of M. oleifera leaves varied depending on the extraction form and on the solvents used. In general, the fractions prepared from the extraction process 1 showed higher antioxidant activity and chromatographic profiles with more intense signals. Based on these results, the fraction obtained with ethyl acetate, in the extraction process 1, was selected for the bioguided isolation. The purification of this fraction on an open column of silica gel generated 61 subfractions, which, after TLC analysis, were grouped in 18. The evaluation of the antioxidant activity of grouped subfractions showed that five of them presented great potential. However, depending on the yield, only three could follow the isolation. In this step, an additional analysis was performed: the determination of the antioxidant activity by an on-line HPLC method with the ABTS•+. This technique allowed defining which of the compounds presented in each subfraction had higher potential and, therefore, would be isolated. In this way, five compounds were isolated by semipreparative HPLC, two of them were tested by the DPPH• scavenging assay. The obtained EC50 values, 30.34 and 38.72 μg/mL, are close to those found in literature for substances isolated from other natural matrices. The NMR technique allowed identifying a flavonol glucoside. The results of this work showed that M. oleifera leaves collected in Itajaí are source of phenolic compounds with antioxidant potential and, therefore, are promising for the application in cosmetics, food and pharmaceutical industries.
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Книги з теми "Phenolic phytochemicals":

1

Hoda, Muddasarul, Shanmugam Hemaiswarya, and Mukesh Doble. Role of Phenolic Phytochemicals in Diabetes Management. Singapore: Springer Singapore, 2019. http://dx.doi.org/10.1007/978-981-13-8997-9.

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2

G, Fraga Cesar, ed. Plant phenolics and human health: Biochemistry, nutrition, and pharmacology. Hoboken, N.J: Wiley, 2010.

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3

Doble, Mukesh, Muddasarul Hoda, and Shanmugam Hemaiswarya. Role of Phenolic Phytochemicals in Diabetes Management: Phenolic Phytochemicals and Diabetes. Springer Singapore Pte. Limited, 2020.

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4

Doble, Mukesh, Muddasarul Hoda, and Shanmugam Hemaiswarya. Role of Phenolic Phytochemicals in Diabetes Management: Phenolic Phytochemicals and Diabetes. Springer, 2019.

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5

G, Fraga Cesar, ed. Phenolic compounds of plant origin and human health: Biochemistry behind their nutritional and pharmacological value. Hoboken, N.J: Wiley, 2009.

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6

Fraga, Cesar G. Plant Phenolics and Human Health. Wiley & Sons, Incorporated, John, 2009.

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7

The Biochemistry of Plant Phenolics (Proceedings of the Phytochemical Society of Europe). Oxford University Press, USA, 1986.

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8

Handbook on Gallic Acid: Natural Occurrences, Antioxidant Properties and Health Implications. Nova Science Pub Inc, 2013.

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Частини книг з теми "Phenolic phytochemicals":

1

Sauceda, Ana Elena Quirós, Sonia Guadalupe Sáyago-Ayerdi, Jesús Fernando Ayala-Zavala, Abraham Wall-Medrano, Laura A. de la Rosa, Gustavo A. González-Aguilar, and Emilio Álvarez-Parrilla. "Biological Actions of Phenolic Compounds." In Fruit and Vegetable Phytochemicals, 125–38. Chichester, UK: John Wiley & Sons, Ltd, 2017. http://dx.doi.org/10.1002/9781119158042.ch6.

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2

Saltveit, Mikal E. "Synthesis and Metabolism of Phenolic Compounds." In Fruit and Vegetable Phytochemicals, 115–24. Chichester, UK: John Wiley & Sons, Ltd, 2017. http://dx.doi.org/10.1002/9781119158042.ch5.

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3

Xu, Zhimin. "Analysis Methods of Phenolic Acids." In Analysis of Antioxidant-Rich Phytochemicals, 69–104. Oxford, UK: Wiley-Blackwell, 2012. http://dx.doi.org/10.1002/9781118229378.ch3.

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4

Zhao, Hefei, and Changmou Xu. "Natural Phenolic Compounds as Anti-obesity and Anti-cardiovascular Disease Agent." In Dietary Phytochemicals, 205–21. Cham: Springer International Publishing, 2021. http://dx.doi.org/10.1007/978-3-030-72999-8_11.

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5

Muñoz-De la Cruz, Fabiola C., Frida R. Cornejo-García, Nadia M. Vázquez-Díaz, Miriam A. Anaya-Loyola, and Teresa García-Gasca. "Grape Bagasse: A Potential Source of Phenolic Compounds." In Fruit and Vegetable Phytochemicals, 1055–66. Chichester, UK: John Wiley & Sons, Ltd, 2017. http://dx.doi.org/10.1002/9781119158042.ch52.

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6

Velderrain Rodríguez, Gustavo R., Francisco J. Blancas-Benítez, Abraham Wall-Medrano, Sonia Guadalupe Sáyago-Ayerdi, and Gustavo A. González-Aguilar. "Bioaccessibility and Bioavailability of Phenolic Compounds from Tropical Fruits." In Fruit and Vegetable Phytochemicals, 155–64. Chichester, UK: John Wiley & Sons, Ltd, 2017. http://dx.doi.org/10.1002/9781119158042.ch8.

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7

Luthria, Devanand, Ronita Ghatak, and Haiqiu Huang. "Phenolic Phytochemicals from Rye (Secale Cereale L)." In Cereals and Pulses, 71–84. Oxford, UK: Wiley-Blackwell, 2012. http://dx.doi.org/10.1002/9781118229415.ch6.

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8

Hoda, Muddasarul, Shanmugam Hemaiswarya, and Mukesh Doble. "Food Sources of Antidiabetic Phenolic Compounds." In Role of Phenolic Phytochemicals in Diabetes Management, 45–82. Singapore: Springer Singapore, 2019. http://dx.doi.org/10.1007/978-981-13-8997-9_3.

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9

Hoda, Muddasarul, Shanmugam Hemaiswarya, and Mukesh Doble. "Phenolic Phytochemicals: Sources, Biosynthesis, Extraction, and Their Isolation." In Role of Phenolic Phytochemicals in Diabetes Management, 13–44. Singapore: Springer Singapore, 2019. http://dx.doi.org/10.1007/978-981-13-8997-9_2.

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10

Hoda, Muddasarul, Shanmugam Hemaiswarya, and Mukesh Doble. "Diabetes: Its Implications, Diagnosis, Treatment, and Management." In Role of Phenolic Phytochemicals in Diabetes Management, 1–12. Singapore: Springer Singapore, 2019. http://dx.doi.org/10.1007/978-981-13-8997-9_1.

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Тези доповідей конференцій з теми "Phenolic phytochemicals":

1

Sahoo, Debasish, Virendra Vaishnav, Tanushree Chatterjee, and Navita Gupta. "HERBAL DIETARY SUPPLEMENT – A MODERN APPROACH IN COMPLEMENTARY AND ALTERNATIVE MEDICINE (CAM) IN HEALTH CARE SCIENCE." In International Conference on Public Health and Medical Sciences. Goodwood Conferences, 2022. http://dx.doi.org/10.35912/icophmeds.v1i1.24.

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Preliminary pharmacological study of herbal based dietary supplement formulation based on extracts or whole plants derived from fruits, root, berries, macrofungus and leaves as a promising, safe and effective alternative to synthetic and pharmaceutical dietary supplements, in-vitro studies such as antibacterial, anti-oxidant and anti-inflammatory activity for extract of dietary supplements. Nutritional assessment of nutritional attributes as suggested by AOAC method, Phytochemical analysis by standard chemical procedures, Quantitative estimate Alkaloid, Flavonoid, Phenolic, Tannin. In-vitro studies of anti-microbial (well diffusion), anti-oxidant assay (DPPH assay), anti-inflammatory assay (albumin denaturation assay). FTIR analysis for detection of different functional group. The finding suggest that the plant extract have a better nutritional aspect. The extracts for the food supplement showed positive results for anti-microbial, anti-oxidant and anti-inflammatory activity. More studies has to be concluded in respect to in-vivo tests that will conclude other pharmacological aspect of the food supplements. Reduced concentration of heavy metals and other contaminants will increase the therapeutical potency of the supplement. Stability, hold time study, dose and dosage form must be concluded in respect to achieve maximum efficacy. The herbal dietary supplement tend to better option against chemical based multi-vitamins and dietary supplements. These will enact the general well-being along with other pharmacological activities due to presence of phytochemicals present in the supplement.
2

Sarkar, Biswatrish, Amrita chatterjee, and Prashanta Deb. "Influence of solvents and techniques for extraction of phenolic phytochemicals linked with antioxidant and enzyme inhibition potential of &lt;em&gt;Ocimum tenuiflorum &lt;/em&gt;Linn." In 7th International Electronic Conference on Medicinal Chemistry. Basel, Switzerland: MDPI, 2021. http://dx.doi.org/10.3390/ecmc2021-11461.

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3

Senga, Kento, Kaci Ho, Jon-Paul Bingham, and Marisa Wall. "Nutrient Content and Carotenoid Bioaccessibility of Underutilized Taro Varieties from Hawaii." In 2022 AOCS Annual Meeting & Expo. American Oil Chemists' Society (AOCS), 2022. http://dx.doi.org/10.21748/xxpa8618.

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Taro (Colocasia esculenta), a starchy root crop, is widely consumed across Asia and the Pacific and exists as different colored varieties in Hawai‘i. Although nutritional information exists for taro, there is a lack of variety-specific compositional data. In this study, the nutrient content (proximate and mineral via ICP-OES), phytochemical content (carotenoid via HPLC-PDA, total phenolic via Folin-Ciocalteau assay, and total monomeric anthocyanin via pH differential method), and carotenoid bioaccessibility (digestibility and micellarization efficiency via three-stage simulated digestion) were compared for three non-commercial taro, Mana Ulu, Pi‘iali‘i, and immature Pi‘iali‘i (Keiki) with one commercial variety, Maui Lehua. Nutrient and phytochemical contents differed across each taro cultivar based on their raw and cooked forms (P< 0.05). Beta-carotene and lutein were the primary carotenoids across each cultivar, with Mana Ulu containing the highest carotenoid concentration. Beta-carotene exhibited digestive stability of 45.8% and a micellarization efficiency of 13.6% from Mana Ulu samples. Total phenolic content was 83.52, 76.04, 75.44, and 66.86 mg/100 g FW and total anthocyanin content of 10.02, 9.33, 7.32, and 6.93 mg/100g FW for Maui Lehua, Mana Ulu, Pi‘iali‘i Keiki, and Pi‘iali‘i, respectively. Cooked taro had significant polyphenol losses with total phenolic contents of 20.55, 17.73, 22.61, 25.93 mg/100g FW, as well as total anthocyanin contents of 3.19, 2.16, 2.12, and 2.88 mg/100g FW for Maui Lehua, Mana Ulu, Pi‘iali‘i Keiki, and Pi‘iali‘i, respectively. These findings indicate unique nutritional and phytochemical profiles amongst underutilized taro varieties, which could be better leveraged to improve nutrition and health outcomes. Overall, expanding variety-specific compositional data is critical to ensure reliable database information to assess the nutritional adequacy of diets.
4

Almughraby, E., M. I. Kalimullin, A. A. Mostyakova, and O. A. Timofeeva. "VARIETY SPECIFICITY OF PHYTOCHEMICAL COMPOSITION B. OLERACEA L. VAR. ACEPHALA." In STATE AND DEVELOPMENT PROSPECTS OF AGRIBUSINESS. DSTU-PRINT, 2020. http://dx.doi.org/10.23947/interagro.2020.1.340-343.

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Purpose of work - Comparative analysis the content of phenolic compounds, flavonoids, carotenoids, vitamin C, protein and sugars in different varieties of cabbage kale (B. oleracea L. convar. Acephala). As an object of study, we used 2 varieties of cabbage kale - Premier cabbage, Dwarf Blue Curled with green leaves, Redbor with red leaves and Scarlet with purple. It was shown that the content of phenolic compounds and flavonoids was significantly higher in red varieties, compared with green. The content of carotenoids was higher in green varieties. The highest content of flavonoid was found in the variety «Scarlet» and vitamin C in the variety «Redbor». However, the amount of proteins and sugars, there were no significant differences between the varieties.
5

Winkler-Moser, Jill. "Variations in Phytochemicals in DDGS Oil from 30 Ethanol Plants." In 2022 AOCS Annual Meeting & Expo. American Oil Chemists' Society (AOCS), 2022. http://dx.doi.org/10.21748/ncxd5442.

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Many corn-based ethanol plants are separating oil from distillers grains with solubles (DDGS), where it becomes a value-added co-product stream that is utilized as a separate energy source for feed, or as a feedstock for biofuels, namely biodiesel. While the variation in the composition of macronutrients in corn DDGS as well as the fatty acid composition and presence of free fatty acids in corn DDGS oil have been well documented, less information is available on variation of phytochemical components in corn DDGS oil. This study reports the composition and variation of carotenoids, tocopherols, tocotrienols, phytosterols and ferulate phytosterol esters, as well as total phenolics and the in vitro antioxidant activity, based on DDGS oils derived from back-end oil separation at 30 ethanol plants located in the U.S. The total carotenoid contents ranged from 135 – 315 µg/g oil, total tocopherols and tocotrienols ranged from 594 – 1812 µg/g, total phytosterols ranged from 15.8 - 22.4 mg/g, while ferulate phytosterol esters ranged from 3.7 - 5.8 mg/g. The oxidative stability index (at 110 °C) ranged from 4.2 - 16.4 h, while total phenolics ranged from 124 - 420 mg gallic acid equivalents/kg oil. Correlations among the variables and antioxidant activity as well as oxidative stability will also be presented.
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Arcus, Mariana. "COMPARATIVE PHYTOCHEMICAL STUDY REGARDING THE CONTENT OF PHENOLIC COMPOUNDS WITH HEPATOPROTECTIVE ACTION." In SGEM 2014 Scientific SubConference on PSYCHOLOGY AND PSYCHIATRY, SOCIOLOGY AND HEALTHCARE, EDUCATION. Stef92 Technology, 2014. http://dx.doi.org/10.5593/sgemsocial2014/b12/s2.021.

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NASER, Estabraq H., and Haifaa R. ALANSARI. "COMPARATIVE STUDY OF THREE SEQUENTIAL EXTRACTION PROCEDURES FOR SECONDARY METABOLITES IN SEEDS OF PORTULACA OLERACEA PLANT BY GC.MS TECHNIQUE." In IV.International Scientific Congress of Pure,Appliedand Technological Sciences. Rimar Academy, 2022. http://dx.doi.org/10.47832/minarcongress4-30.

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Secondary metabolites referred to as phytochemical compounds that have importance in the recovery of many ailments. In order to identify these compounds and get their benefits, they must be identified and isolated from their parent plant; one of them is Portulaca oleracea that is belongs to portulacaceae family. The seeds are extracted by three different sequential extraction methods including petroleum ether, Ethylacetate, and methanol in way based on gradual increasing solvent polarity. The quantification and identification of the compounds were carried out by gas chromatography mass detection apparatus. The result shown that these seeds contain many secondary metabolites like flavonoids, alkaloids, saponins, steroids and phenolic compounds. The GC-MS analysis of the seeds extracts showed the presence of many important compunds such as, trans-geranylgeraniol, tetracosanoic acid, trans-farnesol, digitoxin, vitamin E, estrol and cis-6-octadecenoic acid in high percent in addition to little percent distributed between β-sitosterol, gitoxigenin, (+)-α-tocopherol, camphene, hexadecane, δ-elemene, 3- methoxybenzyl alcohol, ecgonine, (-)-myrtenol, cholecalciferol, 9cis-retinal, limonene-6-ol,pivalate, p-cymene, γ-terpinene, humulene, patulin, 1,12tridecadiene, isopropyl linoleate, pentadecane, elaidic acid, ascorbic acid,permethyl-, dodecanedioic acid, carvedilol, heptadecanoic acid, linolenic acid, kampferol-3,4'-dimethyl ether, and scopoletin, it is important to mention that these compounds can be utilized in the treatment of many diseases as single drug. Key words: Digitoxin, Vitamin E, Portulacaceae, GC.MS, Phytochemical Screening.
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Sundowo, Andini, Nina Artanti, M. Hanafi, Minarti, and Gian Primahana. "Phytochemical screening, total phenolic, total flavonoids contents and antioxidant activity of cinchona ledgeriana leaves ethanol extract." In PROCEEDINGS OF THE 3RD INTERNATIONAL SYMPOSIUM ON APPLIED CHEMISTRY 2017. Author(s), 2017. http://dx.doi.org/10.1063/1.5011924.

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Shufyani, Fahma, David Ginting, Jhon Patar Sinurat, Tika Afriani, Muhammad Mabrur, and Ritmah Syah Putri. "Phytochemical Screening of Phenolic Levels from Extracted Bitter Mustard Leaves (Brassica juncen L. Czern.) using UV-Visible Spectrophotometer." In International Conference on Health Informatics and Medical Application Technology. SCITEPRESS - Science and Technology Publications, 2019. http://dx.doi.org/10.5220/0009973605070514.

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AJALA, Mary Adejoke, Ambali Saka ABDULKAREEM, Abdulsalami Sanni KOVO, Jimoh Oladejo TIJANI, and Ayomide Samuel ADEYEMI. "ADSORPTION STUDIES OF ZINC, COPPER, AND LEAD IONS FROM PHARMACEUTICAL WASTEWATER ONTO SILVER MODIFIED CLAY ADSORBENT." In SOUTHERN BRAZILIAN JOURNAL OF CHEMISTRY 2021 INTERNATIONAL VIRTUAL CONFERENCE. DR. D. SCIENTIFIC CONSULTING, 2022. http://dx.doi.org/10.48141/sbjchem.21scon.10_abstract_ajala.pdf.

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Clay-supported silver nanoparticles were green synthesized using the aqueous leaf extract of Parkia biglobosa. The phytochemical analysis and FTIR results of the Parkia biglobosa showed that the leaf contains phenol, tanning, and flavonoids, which act as reducing, capping, and stabilizing agents required for the synthesis of the silver nanoparticles. The prepared adsorbent has good morphology, is rich in silica, and contains functional groups suitable for heavy metal binding. The adsorptions of Zn, Cu, and Pb from pharmaceutical wastewater onto the silver-modified clay were studied as an adsorbent dosage and contact time. From the percentage removal results obtained, the adsorbent had up to 99.96%, 99.5%, and 99.44% removal efficiency for Zn, Pb, and Cu, respectively. The present work shows that the synthesized silver nanoparticles supported on local clay can be used as a potentially low-cost adsorbent to remove heavy metal ions from industrial wastewater.

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