【摘要】 应用Ames试验对绿茶和红茶进行抗诱变性研究.实验用绿茶和红茶的丙酮提取物诱导TA98和TA100突变株对2-氨基芴、黄曲霉毒素B₁和迭氮钠等致突变物的回复突变,观察其抑制致突变作用.结果表明两种茶叶对几种性质不同、结构各异、致癌作用机理不同的致突变或致癌物均有显著的抗突变作用.更多还原

【Abstract】 Ames test was used in testing green tea and black tea for their anti-mutagenic effect on 2-AF, AFB₁, NaN₃ induced mutagenic activity.The tested tea were extracted repeatedly with acetone and were detected with strains TA98 and TA100 The revertants induced by 2-AF, AFB₁, NaN₃ decreased significantly when green tea and black tea were added into the medium.The results revealed that these two kinds of green and black tea had remarkable inhibitory effect on 2-AF, AFB₁, NaN₃ induced mutagenic activity for TA98, TA100; and also suggested that anti-mutagenic substances were present in these tea.This experiment provides a scientific basis for the study of food resources in the prevention of carcinogenesis.更多还原