Antioxidant effects of solvent extracts from the dried jujube (Zizyphus jujube) sarcocarp,seed, and leaf via sonication |
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Authors: | Kim Ye-Jin Son Dae-Yeul |
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Affiliation: | (1) CAU and ACC Joint-Laboratory of Space Food, College of Food Science and Nutritional Engineering, Key Laboratory of Functional Diary, Ministry of Education, China Agricultural University, 100083 Beijing, People’s Republic of China;(2) Food College, Shihezi University, 832003 Shihezi, Xinjiang Uygur Autonomous Region, People’s Republic of China; |
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Abstract: | Antioxidant effects of extracts from sarcocarp, seed, and leaf of dried jujube (Zizyphus jujube) were investigated. The highest amount of flavonoids and polyphenol was found in 80% methanol leaf extract at value of 43.04±0.34
and 324.75±6.01 mg/g, respectively. For 2,2′-azino-bis-3-ethylbenzo-thiazoline-6-sulfonic acid (ABTS) radical scavenging activity
analysis at a concentration of 1,000 μg/mL, 70% ethanol seed extract (94.76±0.23%), and 80% methanol leaf extract (95.46±0.14%)
were observed to have higher activity than those of controls, such as butylated hydroxyl anisole (BHA) (89.60±0.00%), butylated
hydroxyl toluene (BHT) (84.07±0.50%), vitamin C (89.27±0.12%), and vitamin E (88.53±0.12%). All solvent extracts from leaf
showed higher ABTS radical scavenging activity (over 98%) than those of controls with their activity values around 94% (500
g/mL). All extracts from sarcocarp and seed showed superoxide dismutase (SOD)-like activity of 24.46–34.84% on the concentrations
(100–1,000 g/mL), and 80% methanol leaf extract showed the highest activity (43.66±0.37%) among samples. These results indicate
that sarcocarp, seed of dried jujube are all excellent antioxidants, and especially leaf showed higher antioxidant effect
than those of vitamin C and E. |
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