In fact, foods with short shelf life can also be eaten. For example, whether milk is refrigerated is more important than the shelf life. As for those bagged foods that can't be eaten in one meal, although there is a little bacterial pollution, they just taste worse and the risk of harm to health is not high. It is best to refer to the date on the package. You can also pay attention to deterioration when drinking. Our yogurt smells sour. After opening, you can see that the surface is blocky or cauliflower-like, while the yogurt without deterioration has a sweet and sour aroma.

Fruit is actually not recommended. People often like to use plastic wrap when entering the refrigerator, especially watermelon. Covered and stored in the refrigerator will not only breed bacteria and shorten the shelf life of food, but also the toxic substances of plastic wrap are easy to penetrate, causing secondary poisoning. There is a saying about meat preservation: the best temperature of fresh meat bought back is 3-5 degrees, and the meat quality is the best at this temperature.

The shelf life shall not exceed 24 hours. Those fish eaten within 1 ~ 2 days are frozen at 0℃. Greenhouse is the best; Recently, there are many foods suitable for putting meat in a refrigerator at -7℃. Vegetables, fruits and meat. It tastes different. Sealing with plastic wrap can prevent cross-flavor, prevent food from going bad and change the taste of food itself. Not only does it not lose moisture, but it also ensures freshness. At the same time, it also prevents the food from being in the refrigerator because of the moisture coming out of the food at low temperature.

The increase of moisture makes the refrigerator easy to freeze (whether it is refrigerated or frozen), and it will also cause crosstalk and odor between foods. Especially leftovers or smelly food, such as durian, if you don't have to seal the bag or. Wrapping with plastic wrap will lead to refrigerator. All the food in the kitchen will smell like durian. Bacteria can survive and even reproduce at low temperature. Therefore, improper storage temperature, high food temperature and cross storage of raw and cooked foods all affect the refrigeration effect and reduce the "safety factor" of the refrigerator. Therefore, it is necessary to store processed food reasonably.