在天然污染黄曲霉毒素M_1的喷雾干燥脱脂奶粉中加入生牛奶或消毒牛奶,使此种混合牛奶中黄曲霉毒素M_1的浓度为1.1μg/L。加入不同量的福尔马林(37% w/w),使牛奶中甲醛浓度分别为0,0.025,0.05和0.1%。样品用玻璃和塑料容器盛放,置于暗处21℃保存,分别于0、1、2、3和4周时测定其中黄曲霉毒素M_1。用生牛奶和玻璃容器重复整个试验一次,分别于0、1和2周时测定其中黄曲霉毒素M_1。结果表明,随着时间增长和甲 Raw milk or sterilized milk is added to the naturally-contaminated aflatoxin M 1 spray-dried skim milk powder so that the concentration of aflatoxin M 1 in the mixed milk is 1.1 μg / L. Different amounts of formalin (37% w / w) were added so that the formaldehyde concentration in milk was 0, 0.025, 0.05 and 0.1%, respectively. Samples were stored in glass and plastic containers and stored in the dark at 21 ° C. Aflatoxin M_1 was determined at 0, 1, 2, 3, and 4 weeks. The whole experiment was repeated with raw milk and a glass container, and the aflatoxin M_1 was measured at 0, 1 and 2 weeks respectively. The results show that with the growth of time and A