Effects of tea decoctions on the mutagenicity of 1-methyl-1,2,3,4-tetrahydro-β-carboline-3-carboxylic acid treated with nitrite in the presence of ethanol

被引：0

作者：

Akada, Y ^{[1
]}

Higashimoto, M ^{[1
]}

机构：

[1] Tokushima Bunri Univ, Fac Pharmaceut Sci, Yamashiro, Tokushima 770, Japan

来源：

BUNSEKI KAGAKU | 1997年 / 46卷 / 12期

关键词：

antimutagenicity; nitrosation; green tea; black tea; oolong tea;

D O I：

暂无

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

It was found that the mutagenicity of 1-methyl-1,2,3,4-terrahydro-beta-carboline-3-carboxylic acid (MTCCA) treated with 50 mM nitrite at pH 3, 37 degrees C for 60 min in the presence of 7.5% ethanol was strongly reduced upon adding the decoctions of green, black and oolong teas in reaction mixture with the Ames Salmonella mutagenicity test. The antimutagenicity and reducing power, which were determined of tea decoctions, gave a positive correlation, suggesting that reducing compounds, such as catechins contained in the teas, may play a significant role in the mutagenicity-reducing activity.

引用

页码：999 / 1001

页数：3

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