作者利用组氨酸营养缺陷型的鼠伤寒沙门氏菌对14种蔬菜的水溶性部分及丙酮提取物进行了致突变性试验(Ames试验)。在几种蔬菜中看到有抗3-甲基胆蒽及苯并(a)芘的致突变活性作用。作者认为,这种抗突变活性跟含在丙酮提取物中的叶绿素的量有相关关系。含在蔬菜水溶性部分中的组氨酸增加了细菌的回复突变数。因此,根据组氨酸的含量,作者把各各蔬 The authors used a histidine auxotrophic Salmonella typhimurium mutagenicity test (Ames test) on water soluble parts and acetone extracts of 14 kinds of vegetables. Mutagenic activity against 3-methylcholanthrene and benzo(a)pyrene was seen in several vegetables. The authors believe that this antimutagenic activity is related to the amount of chlorophyll contained in the acetone extract. Histidine contained in the water-soluble portion of vegetables increases the number of back mutations of bacteria. Therefore, according to the content of histidine, the author put each vegetable