Title of article :
Systematic evaluation of antioxidant capacities of the ethanolic extract of different tissues of jujube (Ziziphus jujuba Mill.) from China
Author/Authors :
Zhang، نويسنده , , Hao and Jiang، نويسنده , , Lu and Ye، نويسنده , , Shu-ming Ye، نويسنده , , Yubin and Ren، نويسنده , , Fazheng، نويسنده ,
Issue Information :
روزنامه با شماره پیاپی سال 2010
Pages :
5
From page :
1461
To page :
1465
Abstract :
Jujube (Ziziphus jujuba Mill.) has long been used for human consumption and medicinal purposes in China. It is recommended for some diseases in which radical species are produced as a result of oxidative stress. However, the systematic study on the antioxidant capacities of various tissues of jujube is still lacking. In order to address this, various tissues of three jujube varieties were characterized with respect to their antioxidant capacities and antioxidant compounds such as flavonoid, ascorbic acid, anthocyanin and phenolic. Antioxidant capacity was measured using the DPPH (2,2-diphenyl-1-picrylhydrazyl) and FRAP (ferric-reducing antioxidant power) assays. The phenolic acids were analyzed by high-performance liquid chromatography (HPLC). The results show that the peel of all cultivars has the highest antioxidant capacities, reflecting the highest content of total phenolics, flavonoids, and anthocyanins found in this part. In addition, the predominant phenolic acid in jujube was found to be protocatechuic acid, followed by gallic acid, chlorogenic acid and caffeic acid. The results obtained in this study clearly indicate that Chinese jujube has a significant potential to use as a natural antioxidant agent.
Keywords :
antioxidant activity , Jujube , Different tissue types , ascorbic acid , phenolics
Journal title :
Food and Chemical Toxicology
Serial Year :
2010
Journal title :
Food and Chemical Toxicology
Record number :
2121968
Link To Document :
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