咖啡在SOS／Umu试验中对已知致癌物的抗诱变作用

应用ＳＯＳ／Ｕｍｕ试验研究ＴＭＡＸＷＥＬＬ速溶咖啡（美国产品）、亚洲咖啡（中国广东产品）和ＭＡＸＩＮ咖啡（日本产品）对已知致癌物４－硝基喹啉、ＡＦ－２及２－氨基蒽诱变性的抑制作用。结果表明３种咖啡提取物对４－硝基喹啉、ＡＦ—２及２－氨基蒽都有明显的抗诱变作用，ＭＡＸＩＮ咖啡抑制率为８０％以上，ＭＡＸＷＥＬＬ速溶咖啡抑制率为７０％以上，亚洲咖啡在５０％左右。其抑制率与咖啡的可溶性部分的多少成正比（ＭＡＸＩＮ咖啡可溶性部分为９７．３％、ＭＡＸＷＥＬＬ速溶咖啡为９２．２％、亚洲咖啡为３２．７％），表明３种咖啡在ＳＯＳ／Ｕｍｕ试验中抗诱变效果的差异可能是由于咖啡可溶性部分的多少所致。

Suppressive Effects of Three Brands of Coffee on Mutagenicity Known Carcinogens in SOS/Umu Test

The suppressive effects of three brands of coffee:MAXIN (made in Japan ), MAXWELL(made in USA ), ASAIN (made in China), on mutagenicity induce by know carcinogen 4NQO.AF-2 and 2-AA were studied in SOS/Umu test. The results showed that all the brands of coffee have obvious suppressive effects on mutagenicity induce by 4NQO or AF-2. Suppressive ratio of MAXIN was about 80%, MAXWELL 70%, ASAIN 50%. The suppressive ratio depends on the proportion of the solubilities of coffee. It was suggested that the different effects of coffee may be owing to the different solubilities.