Leftovers, don't put them directly in the refrigerator. What is the key to keeping fresh and healthy?

Food should be put into the refrigerator as soon as possible after eating, so as to shorten the storage time at room temperature and slow down the growth and reproduction of bacteria in food. In order to save electricity, people are used to cooling food before putting it in the refrigerator. In this case, bacteria are likely to multiply rapidly, such as Shigella dysenteriae, which can multiply rapidly enough to cause disease within a few hours.

35℃ is the most favorable temperature for rapid propagation of bacteria. In the environment below 10℃, the growth rate of most bacteria will become slow. Usually the temperature of food stored in the refrigerator is 4-8℃. Let the hot food be put into the refrigerator immediately, although it can't kill bacteria, it will also effectively inhibit the reproduction of bacteria. Before putting food in the refrigerator, wrap it in a fresh-keeping bag to prevent cross-contamination and odor, and be sure to heat it before eating it again. Although some pathogenic bacteria will not cause food deterioration, they will cause disease.

When food is heated, most bacteria in the food will be killed. Microwave ovens can destroy the internal structure of microorganisms in a short time, and the sterilization effect is better than that of traditional "fire". Of course, at the same time of heating and disinfection, vitamin C in plant food is destroyed and some nutrients are lost. After the food cools, put it in the refrigerator. This is because hot food suddenly enters a low temperature environment. Food centers are prone to qualitative change. The hot air brought by food will cause water vapor condensation, promote the growth of mold, and lead to food in the whole refrigerator.

Mould. This is because hot food suddenly enters the low temperature environment, and the food center is prone to qualitative change. The hot air brought by food causes water vapor condensation, promotes the growth of mold, and leads to mildew in the whole refrigerator.