antioxidant activity of polyphenols and flavonoids

... phytochemical contents with IC50 values of radical scavenging and/ or antioxidant ability of extract of LP and its various soluble fractions The contents of phenolics and flavonoids showed significant correlation ... significant activity of LPME could be due to the presence of bioactive flavonoids Our results agree with the results of Shukla et al [35] during the screening of in vitro antioxidant activity and total ... determination of total flavonoids and phenoilc consents, and to evaluate its antioxidant potential through scavenging of various free radicals Results Phytochemical characterization Total phenolics and flavonoids

Ngày tải lên: 02/11/2022, 08:53

... varieties of black rice Therefore, more complete analyses of anthocyanin content and antioxidant activity of diverse varieties of black rice are needed Knowing the antioxidant activity of different ... antioxidant activity of whole grain white rice or rice bran, and a limited number of studies have reported the antioxidant activity of black rice (Zhang et al., 2010) The concentration of anthocyanins ... study, total antioxidant activity in black rice was significantly correlated to the content of total phenolics, total flavonoids, and anthocyanins The antioxidant properties of colored rice and non-colored

Ngày tải lên: 09/01/2020, 18:44

... molecular weight peptides and increased the antioxidant activity Degree of hydrolysis also affects antioxidant activity and it depends on different enzymes and the way for use of enzymes such as single ... exhibited the antioxidant activity greater than normal collagen (11.88–12.6%) Degrees of antioxidant activity varied with type of enzyme Collagen hydrolyzed by alcalase and papain possessed the antioxidant ... with molecular weight of 120, 63, 50 and 30 kDa and the hydrolysis of papain showed peptides with molecular weight of 120, 110, 75, 63, 50 and 30 kDa, whereas the hydrolysis of pepsin presented

Ngày tải lên: 13/01/2020, 14:56

... Quercetin equivalent (QE)/gm of plant dried extract Antioxidant activity of various extracts of Ficus roxburghii Wall Analysis of the antioxidant activity of various extracts of Ficus roxburghii was ... methanol, ethanol, hexane, and chloroform extracts of both leaves and fruits Lignin and amino acids were present in methanol, chloroform and hexane extracts of both leaves and fruits but were absent ... scavenging activity of various extracts of FRL and Ascorbic acid values expressed are mean±standard deviation (n=3) Fig.5 DPPH free radical scavenging activity of various extracts of FRF and Ascorbic

Ngày tải lên: 14/01/2020, 13:43

... compounds and antioxidant activities of lychee pericarp Therefore, the aim of the present study is to compare the influence of SGF and SIF digestion on the composition and content of phenolic ... phenolic substances of six varieties of lychee pericarps, and to explore the change of phenolic compounds caused by simulated digestion on antioxidant activity Page of 10 Fig. 1  Effects of simulated ... absorbed The gastric digestion and intestinal digestion would have different effects on the composition and content of phenolic profiles, and thus change their antioxidant activity [21, 22] After simulated

Ngày tải lên: 29/05/2020, 12:25

... concentration of 1000 μg/mL Then mL of each standard solution was removed and transferred to a 20 mL volumetric flask, followed by the addition of mL of % phenol solution and mL of 98 % concentrated sulfuric ... indicated that the extraction time of 30 gave the highest PS content 3.2 Antioxidant activity investigation Figure presents the antioxidant activity of ascorbic acid (a) and the extract (b) at different ... Xie J., Wang P., and Su W - Mechanochemical-assisted extraction and antioxidant activity of polysaccharides from Ganoderma lucidum spores, International Journal of Food Science and Technology 47

Ngày tải lên: 28/06/2021, 15:47

... radicals and reactive oxygen species Experiment and result:   orange juice mandarin juice → reduce in colon and lung cancer → study the antioxidant activity of hesperidin Wilmsen P.; J Agric Food Chem ... induced by stressing agents Table Survival of SOD Proficient and Deficient S cerevisiae Strains Treated and Untreated with the Antioxidant Hesperidin and/ or the Stressing Agents Paraquat or Hydrogen ... Antioxidant Activity of the Flavonoid Hesperidin in Chemical and Biological Systems Scientific seminar - Lam Thu Huyen K63D2 - Phamarceutical Chemistry - Ha Noi university of Science

Ngày tải lên: 10/06/2022, 21:23

... capacities of antioxidant compounds and led to the decrease in the scavenging capacity of total extracts Figure ABTS radical scavenging activity of T indica vvater extracts and Trolox Standard at ... Hai Phong and Sai Gon) Moreover, the antioxidant capacity of these extracts was determined using the DPPH and ABTS radical scavenging activity MATERIALS AND METHODS Sample collectỉon and preparation ... (2000) Antioxidant Phytochemicals in Fruits and Vegetables: Diet and Health Implications HortSci 35: 588-592 Sim K, Malek SNA, Wahab N (2010) Phenolic content and antioxidant activity o f cmde and

Ngày tải lên: 26/12/2022, 23:24

... acid/100g of medicinal herbs) 46 4.4 Results of determining the antioxidant activity of herbal extracts and essential oils 4.4.1 The results of the determination of the antioxidant capacity of the standard ... 4.4 Results of determining the antioxidant activity of medicine extracts and essential oils 47 4.4.1 The results of the determination of the antioxidant capacity of the standard VTME ... and antioxidant activity (scavenging activity) 48 Table 4.18 Antioxidant activity of extracts 50 Table 4.19 Antioxidant capacity of essential oils extracted 52 vii LIST OF FIGURES

Ngày tải lên: 11/07/2023, 14:15

... Cellular antioxidant activity of common vegetables Journal of Agricultural and Food Chemistry 58 (11):6621-6629 Sun, T., J R Powers, and J Tang 2007 Evaluation of the antioxidant activity of asparagus, ... ID: G10280008 Title of Thesis: Evaluation of antioxidant activity of various parts of broccoli Total Pages: 91 Name of Institute: National Pingtung University of Science and Technology Department: ... Application of principal component and hierarchical cluster analysis to classify fruits and vegetables commonly consumed in Ireland based on in vitro antioxidant activity Journal of Food Composition and

Ngày tải lên: 20/09/2017, 10:25

... extraction of polyphenols and antioxidant activity from V amygdalina leaves The variables were designed of three levels (lower, middle and higher value, being coded as −1, and +1) (Table 1) and a ... input variables and the contribution of each parameter on the values of responses The RSM model and ANOVA analysis showed that the values of TPC and TFC content and antioxidant activity were affected ... [30] S.A Baba and S.A Malik, "Determination of total phenolic and flavonoid content, antimicrobial and antioxidant activity of a root extract of Arisaema jacquemontii Blume." Journal of Taibah University

Ngày tải lên: 12/01/2020, 02:14

... time the antioxidant activity of polyphenolic compounds of A hydaspica Result showed good resolution and separation from other constituents of extract and method was found to be simple and precise ... measuring the antioxidant capacity of a complex samples and there is no single broad-spectrum system which can give an inclusive, precise and quantitative prediction of antioxidant efficacy and antiradical ... [16–18] Anticancer activity of A hydaspica polyphenols has been determined against breast and prostate cancer [19] In present study we determined the antioxidant activity of purified compounds

Ngày tải lên: 29/05/2020, 13:32

... possess potent antioxidant activity which exhibited higher radical scavenging activity [14] The extraction of antioxidant compounds is a crucial process to determine the quantity and type of bioactive ... experimental values for total phenolics and flavonoids of Curcuma zedoaria leaves were 125.75 ± 0.17 mg of gallic acid equivalents and 6.12 ± 0.23 mg quercetin/g of extract, which closely agreed with ... source of natural antioxidants Active compounds present in natural antioxidants such as phenolic, carotenoids, flavonoids, folic acid, benzoic acid, and tocopherol are secondary metabolites of the

Ngày tải lên: 29/05/2020, 13:37

... Antimicrobial Activity of Natural and Artificial (Adulterated) Honey Produced in Some Localities in Ghana Matthew Glover Addo*, Abdul Hakim Mutala and Kingsley Badu Department of Theoretical and Applied ... Microbiology laboratory of the Pharmacy Department of the Kwame Nkrumah University of Science and Technology Three plates of each bacteria cultures were prepared to test against each of the three honey ... 25% and 50% concentration in all cases exceeded the recommended 21 %of good quality honey The findings also indicated that, natural honey (Koforidua and Berekum) has a higher antimicrobial activity

Ngày tải lên: 06/08/2020, 00:36

... Cellular antioxidant activity of common vegetables Journal of Agricultural and Food Chemistry 58 (11):6621-6629 Sun, T., J R Powers, and J Tang 2007 Evaluation of the antioxidant activity of asparagus, ... ID: G10280008 Title of Thesis: Evaluation of antioxidant activity of various parts of broccoli Total Pages: 91 Name of Institute: National Pingtung University of Science and Technology Department: ... Application of principal component and hierarchical cluster analysis to classify fruits and vegetables commonly consumed in Ireland based on in vitro antioxidant activity Journal of Food Composition and

Ngày tải lên: 24/02/2021, 19:18

... Cellular antioxidant activity of common vegetables Journal of Agricultural and Food Chemistry 58 (11):6621-6629 Sun, T., J R Powers, and J Tang 2007 Evaluation of the antioxidant activity of asparagus, ... ID: G10280008 Title of Thesis: Evaluation of antioxidant activity of various parts of broccoli Total Pages: 91 Name of Institute: National Pingtung University of Science and Technology Department: ... Application of principal component and hierarchical cluster analysis to classify fruits and vegetables commonly consumed in Ireland based on in vitro antioxidant activity Journal of Food Composition and

Ngày tải lên: 25/02/2021, 09:51

... Cellular antioxidant activity of common vegetables Journal of Agricultural and Food Chemistry 58 (11):6621-6629 Sun, T., J R Powers, and J Tang 2007 Evaluation of the antioxidant activity of asparagus, ... ID: G10280008 Title of Thesis: Evaluation of antioxidant activity of various parts of broccoli Total Pages: 91 Name of Institute: National Pingtung University of Science and Technology Department: ... Application of principal component and hierarchical cluster analysis to classify fruits and vegetables commonly consumed in Ireland based on in vitro antioxidant activity Journal of Food Composition and

Ngày tải lên: 24/03/2021, 08:41

... percentage inhibition of LDL oxidation for the standards like BHA and AA was also determined and compared with those of the synthesised compounds (Fig 3) The antioxidant activity of BHA and AA was still ... SD (n = 3) Evaluation of In Vitro Antioxidant Activity 90 antioxidant activity of 5H-dibenz[b,f]azepine and its derivatives on human LDL oxidation and lipid peroxidation activity in the liposome ... mass spectroscopy and elemental analysis The IR spectra of compounds (e) and (f) showed the absent of the N–H absorption band at 3400 cm–1 and the presence of the C=O stretching band at 1600 cm–1,...

Ngày tải lên: 07/08/2014, 14:20

... hepatic (A) CAT activity; (B) SOD activity; (C) GPx activity; (D) protein expression of CAT, SOD and GPx; (E) representative Western Blot images of the protein expressions of CAT, SOD and GPx in STZ-diabetic ... Effects of metformin, baicalin and metformin + baicalin on the hepatic (A) SOD activity; (B) CAT activity; (C) GPx activity; (D) quantifications of the protein expressions of CAT, SOD and GPx ... (GPx) and catalase (CAT) are other antioxidant enzymes that catalyze the conversion of hydrogen peroxide to water Decreases in expression, and in some instances the inactivity of each of these antioxidant...

Ngày tải lên: 12/09/2015, 10:58

... in the G-5 and G-10 generations of this selection Greater activity of a majority of enzymes was found in the fast group and, vice versa, lower activity was observed in the slow groups of flies ... presents the analyses of variances in activities of enzymes (A) between and (B) within G-1, G-5, and G-10generations of selection for fast and slow prea- dult development of D melanogaster In ... enzymes The activities of some of the studied enzymes are significantly positively associated (e.g ldh, and Me, ldh and a-Gpd, Me and a-Gpd, Adh and ldh, etc.) On the other hand, there is marginally...

Ngày tải lên: 09/08/2014, 22:22