酷暑炎夏,不少人早上取回的鲜牛奶,放到中午或晚上就变成豆腐脑状了.原因何在呢?原来,牛奶中的主要成分是乳糖,它很容易被牛奶中的主要微生物——乳酸杆菌分解而变成乳酸.市售的鲜牛奶虽然都是经过杀菌处理的消毒奶,但仍存在着微量的乳酸杆菌,加之牛奶在运输途中和分送到用户后,不可能保持消毒奶在冷藏室 Summer heat, many people retrieve fresh milk in the morning, put noon or at night into a curd brain.What is the reason? The original, the main component of milk is lactose, it is easy to be the main microorganism in milk - - Lactobacillus break down and become lactic acid.Although all commercially available fresh milk is sterilized milk, but there is still a trace of Lactobacillus, combined with the milk in the transport and distribution to the user, it is impossible to keep the disinfection of milk In the freezer