Genotypic difference and its correlation analysis in antioxidant activities of sweetpotatoes (Ipomoea batatas(L.)Lam.)with different flesh colors

摘要：

Antioxidant activities (AE) of 12 sweetpotato genotypes with different flesh colors(white,yellow,orange and purple) were measured by 2,2-diphenyl-1-picrylhydrazyl(DPPH).The results showed antioxidant activity was highest (3.333) for Ayamurasaki(purple-fleshed) and lowest(0.029) for Lizixiang (white-fleshed).The AE values were poorly correlated with the Vitamin C contents in varieties(r=-0.162).However,it was significantly correlated with the contents of total anthocyanins,total phenolic,total carotene and total flavonoid in varieties (r=0.900,0.925,0.957,0.972,P<0.01,respectively).The total phenolic contents(4.59-64.84 mg gallic acid equivalent/g dw) were highly correlated with the AE.Therefore,the total phenolic content can serve as a useful indicator for the antioxidant activities of sweetpotato.

关键词： Sweetpotato Anthocyanin Phenolic Flavonoi Carotene,Antioxidant activity

作者: Zhonghou Tang Hongmin Li Daifu Ma

作者单位: Institute of Sweetpotato,Chinese Academy of Agricultural Sciences,Xuzhou 221121,China

会议类型: 国际会议

会议名称: 3rd China-Japan-Korea Workshop on Sweetpotato(第三届中日韩甘薯学术研讨会)

会议地点: 北京

会议语种:英文

页码: 414-422

在线出版日期: 2008-10-12（万方平台首次上网日期，不代表论文的发表时间）