Chemical studies of proanthocyanidins and hydrolyzable tannins

被引：42

作者：

Bors, W ^{[1
]}

Foo, LY

Hertkorn, N

Michel, C

Stettmaier, K

机构：

[1] GSF Forschungszentrum Umwelt & Gesundheit, Inst Strahlenbiol, D-85764 Neuherberg, Germany

[2] GSF Forschungszentrum Umwelt & Gesundheit, Inst Okol Chem, D-85764 Neuherberg, Germany

[3] Gracefield Res Ctr, Lower Hutt, New Zealand

来源：

ANTIOXIDANTS & REDOX SIGNALING | 2001年 / 3卷 / 06期

关键词：

D O I：

10.1089/152308601317203530

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：

We investigated a number of natural polyphenols representing flavan-3-ols, gallotannins, and ellagitannins with regard to their antioxidant potential. For this purpose we used pulse radiolysis to determine scavenging rate constants with hydroxyl radicals and decay rates of the respective aroxyl radicals and EPR spectroscopy to identify the radicals after in situ oxidation. Using NMR spectroscopy, we could confirm phenolic coupling reactions of epigallocatechin gallate and pentagalloyl glucose after radical-induced oxidation.

引用

页码：995 / 1008

页数：14

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