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• W2808203103 abstract "The aim of this study is to evaluate the antioxidant activity of dried fruit extracts of Z izyphus jujuba Mill. Polyphenols and flavonoids content determined in aqueous extract (aq), hydromethanolic (EM), hydroacetonic (EA) extracts, and their ethyl acetate (Acet) and n -butanol ( n -but) fractions reveal variable rates; 42.84–94.70 mg gallic acid equivalent per g extract and 47.02–427.33 mg catechin equivalent per g extract. The antioxidant activity was evaluated by different assays using total antioxidant capacity, 2,2-Diphenyl-1-picrylhydrazyl (DPPH), β-carotene bleaching assay, and ferric reducing antioxidant power (FRAP). In DPPH assay, all extracts showed an interesting scavenging effect, an estimated reduction rate about 75.58–97.71% was determined with the IC 50 (the half maximal inhibitory concentration) values ranging from 12 to 503.6 μg/ml. In β-carotene bleaching assay, 500 μg/ml of each extract showed a large inhibition (51.14–85.01%) with IC 50 values ranging from 48 to 462 μg/ml compared to butylated hydroxytoluene (BHT), butylated hydroxyanisole (BHA), and tannic acid 0.6, 2.00, and 461 μg/ml, respectively. The results of FRAP show that the crude extracts (aq ˃ EM ˃ EA) are less efficient than their fractions (Acet/aq˃ Acet/EA˃ n -but/EA) which demonstrate an important activity. Concerning total antioxidant capacity essay (TAC), the highest capacity was noticed for Acet/aq (71.98 μg gallic acid equivalents [GAE]/mg extract) and Acet/EA extract (64.62 μg GAE/mg of extract). The antioxidant activity of dried fruit extracts of Z. jujuba is mainly related to its polyphenol content essentially on flavonoids, which qualifies this species as a source of natural antioxidant." @default.
• W2808203103 created "2018-06-21" @default.
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• W2808203103 date "2018-06-12" @default.
• W2808203103 modified "2023-09-23" @default.
• W2808203103 title "Phenolic content and antioxidant activity ofZiziphus jujubaMill. fruit extracts" @default.
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• W2808203103 doi "https://doi.org/10.3166/phyto-2018-0033" @default.
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