Correlation of antioxidant activity and major isoflavonoid contents of the phytoestrogen-rich Pueraria mirifica and Pueraria lobata tubers

被引：85

作者：

Cherdshewasart, W. ^{[1
]}

Sutjit, W. ^{[2
]}

机构：

[1] Chulalongkorn Univ, Fac Sci, Dept Biol, Bangkok 10330, Thailand

[2] Chulalongkorn Univ, Fac Sci, Biotechnol Program, Bangkok 10330, Thailand

来源：

PHYTOMEDICINE | 2008年 / 15卷 / 1-2期

关键词：

Pueraria mirifica; Pueraria lobata; phytoestrogens; isoflavonoids; antioxidant activity; DPPH assay;

D O I：

10.1016/j.phymed.2007.07.058

中图分类号：

Q94 [植物学];

学科分类号：

071001 ;

摘要：

The antioxidant activity of wild Pueraria mirifica collected from 28 of the 76 provinces of Thailand and Pueraria lobata collected from China were assessed by 1,1-diphenyl-2-picrylhydrazyl (DPPH) assay. P. mirifica tuberous extracts showed weak antioxidant activity in comparison with alpha-tocopherol. Six plant samples exhibited stronger antioxidant activity than the mean value of the P. mirifica population. In addition, the mean value of the P. mirifica population indicated significantly lower antioxidant activity than P. lobata. The analysis of the antioxidant activity of isoflavonoids revealed that puerarin and daidzein exhibited the same level of antioxidant activity as alpha-tocopherol. The results showed convincingly that puerarin and daidzein in the plant tubers may play an important role in antioxidant activity. The correlation analysis between antioxidant activity and major isoflavonoid contents of plant tubers indicated a significant correlation only with puerarin and a significant lack of correlation with daidzin, daidzein and genistein. (C) 2007 Elsevier GmbH. All rights reserved.

引用

页码：38 / 43

页数：6

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