酸奶,一般指酸牛奶,它是以新鲜的牛奶为原料,经过巴氏杀菌后再向牛奶中添加有益菌(发酵剂),经发酵后,再冷却灌装的一种牛奶制品。目前市场上酸奶制品多以凝固型、搅拌型和添加各种果汁、果酱等辅料的果味型为多。很多人都知道喝酸奶对身体健康有好处,然而喝酸奶未必人人都会正确科学地喝。空腹不宜喝酸奶为什么空腹时不能喝酸奶呢?这是因为通常人的胃液酸碱度在PH1～3之间,空腹时的PH值在2以下,而酸奶中活性乳酸菌生长的酸碱度在PH5.4以上, Yogurt, generally refers to the yogurt, which is fresh milk as raw material, after pasteurization and then added to the milk of beneficial bacteria (starter), after fermentation, and then cooling the filling of a milk product. Yogurt products currently on the market to more coagulation type, stirring type and add a variety of fruit juices, jams and other accessories for the fruity type as much. Many people know that yogurt is good for your health, but not all yogurt will drink properly and scientifically. Fasting should not drink yogurt Why fasting can not drink yogurt? This is because the general pH of gastric juice in PH1 ~ 3, fasting PH value below 2, and the growth of acid lactic acid bacteria in the yogurt pH above PH5.4,