Is it true that the food can’t be put in the refrigerator until it’s completely cold？ Scientific experiments tell you

　　"The food should be completely cold before it can be put in the refrigerator, otherwise it will not only waste electricity, but also damage the life of the refrigerator." I’m afraid there are many people who have this view, but scientific experiments tell you that doing so can easily lead to the proliferation of bacteria and increase food safety risks.

　　After the meal is ready, when the temperature begins to drop, the bacteria begin to "settle in". Studies have found that when the temperature of food drops to 60℃, bacteria begin to grow; When the temperature drops to 30℃~40℃, the bacteria will be very happy and flourish; When the temperature dropped to 4℃, most bacteria stopped and went into a dormant state. Therefore, 4℃~60℃ is also called the "dangerous temperature zone" of food. Cooked meals should be stored below 4℃ as soon as possible to avoid the proliferation of bacteria. The World Health Organization also recommends that food should not be stored at room temperature for more than 2 hours.

　　Many people worry that putting hot dishes directly into the refrigerator will damage the refrigerator. In fact, the refrigeration efficiency of the current refrigerator has been greatly improved. Although putting hot dishes in the refrigerator will slightly increase the burden on the refrigerator and consume a little more electricity, it is within the normal operation range of the refrigerator. It’s not a pity to spend more electricity than bacteria breed and cause food to go bad. After all, safety is the most important thing. Therefore, in order to prevent the growth of bacteria, the best way is to put it in the refrigerator while it is hot. Of course, when it’s hot, it doesn’t mean that you just put it in when it’s hot. You can pack it in a fresh-keeping box or bag in advance, put it at room temperature for a while, and put it in the refrigerator before it is not lower than 60℃ (it feels hot but won’t burn).

　　It should be noted that the refrigerator can not kill bacteria, but only inhibit them, and a few bacteria can still grow in the refrigerator. Therefore, the food put in the refrigerator should be eaten as soon as possible, and it should be fully heated before eating.