Antioxidative activity of water extracts of Lagerstroemia speciosa leaves

被引：38

作者：

Unno, T ^{[1
]}

Sakane, I ^{[1
]}

Masumizu, T ^{[1
]}

Kohno, M ^{[1
]}

Kakuda, T ^{[1
]}

机构：

[1] JEOL LTD, ANALYT INSTRUMENTS DIV, AKISHIMA, TOKYO 196, JAPAN

来源：

BIOSCIENCE BIOTECHNOLOGY AND BIOCHEMISTRY | 1997年 / 61卷 / 10期

关键词：

Lagerstroemia speciosa; banaba; antioxidative activity; lipid peroxidation; radical scavenging activity;

D O I：

10.1271/bbb.61.1772

中图分类号：

Q5 [生物化学]; Q7 [分子生物学];

学科分类号：

071010 ; 081704 ;

摘要：

In order to develop naturally occurring antioxidants from edible plants, the antioxidative effect of hot water extracts of Lagerstroemia speciosa speciosa leaves, known by the Tagalog name of banaba in the Phillipines, was studied, The content of tannin in banaba extract was 36.8% in dry weight. Banaba extract showed strong antioxidative activity in a linoleic acid autoxidation system. Banaba extract was found to have a potent radical scavenging action on 1,1-diphenyl-2-picrylhydrazyl (DPPH) radicals and superoxide radicals (O2-) generated by a hypoxanthine (HPX)/xanthine oxidase (XOD) system, In vitro lipid peroxidation of rat liver homogenate induced by tert-butyl hydroperoxide (BHP) was inhibited by the addition of banaba extract in a dose-dependent manner, From these results, banaba extract was demonstrated to be useful as an antioxidant or free radical scavenger to protect biological systems against oxidative stress.

引用

页码：1772 / 1774

页数：3

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