袋装牛奶加热时,一定要注意科学方法。有的人直接把袋装奶放进锅中煮,也有的人把袋中的牛奶倒在锅里煮沸再喝,这两种方式都不科学。因为塑料袋膜的成分主要是聚乙稀,它在115℃时就会发生分解和变化,溶入牛奶中,对人的身体健康会有损害。同时,高温加热会破坏牛奶中的营养成分。 Bagged milk heating, we must pay attention to scientific methods. Some people put bags of milk directly into the pot to cook, and some people pour the milk in the pot and then boil and drink, both ways are unscientific. Because the plastic bag film is mainly composed of polyethylene, it will decompose and change at 115 ℃, dissolved in milk, the human health will be damaged. At the same time, high temperature heating can destroy the nutrients in the milk.