2, it will produce harmful substances, and expired milk will breed bacteria. If you accidentally drink it, you will feel different and you will be fine. If you don't feel well, it is recommended to see a doctor quickly.
3. Vomiting. Because the number of bacteria in expired milk increases, it will bring harm to people's stomach.
4, causing poisoning. Generally serious will lead to poisoning, threatening people's lives.
Expired milk can't be drunk, because there are still a few harmless or beneficial bacteria or bacterial spores that are relatively heat-resistant after disinfection and sterilization. If the shelf life expires, the number of bacteria will exceed the physical and chemical indicators and health indicators. People will feel uncomfortable and have symptoms such as diarrhea. In severe cases, poisoning will occur.
Extended data:
Pay attention to the following points when saving milk:
1. Fresh milk should be put in a cool place immediately, preferably in the refrigerator.
2. Don't expose the milk to sunlight or light. Sunlight and light will destroy several vitamins in milk and make it lose its flavor at the same time.
3. Cover the bottle cap to prevent other smells from entering the milk.
4. Pour milk into cups, teapots and other containers. If you haven't finished eating, cover it and put it back in the refrigerator. Never pour it back into the original bottle.
5. supercooling also has a bad effect on milk. If milk freezes into ice, its quality will be damaged. So don't freeze the milk, just put it in the refrigerator.
References:
Milk-Baidu Encyclopedia