Non-permanent "fresh storage box" for refrigerators

The refrigerator is ideal for storing food, vegetables, and fruits in your home life, but the refrigerator is not a permanent “fresh box”. The common refrigerating temperature for preserving food in refrigerators is 4 to 8 ° C. In this environment, most bacteria grow at a slower rate. However, some bacteria are psychrophilic, such as Yersinia, Listeria, etc. at this temperature can quickly grow and multiply. In the freezer, the temperature is generally around minus 18 °C, generally bacteria will be inhibited or killed, but freezing does not mean that it can be completely sterilized, and some bacteria with strong anti-freezing ability will survive. Therefore, the refrigerator is not a long-term place for food.

Fresh eggs should not be refrigerated for more than 60 days, and cooked eggs should be refrigerated for up to one week. The freezing time of milk and yogurt items is also about one week. The fresh-keeping time of fresh meat is generally two days, and the freezing time should not exceed half a year. Unopened canned food can be stored in cold storage for 360 days. If it is opened, it should be consumed as soon as possible. Opened peanut butter and sesame sauce can be refrigerated for 90 days, and canned coffee can only be refrigerated for 14 days. The refrigerated fresh-keeping time of apples and citrus is about one week. The refrigerating time of fresh pears is shorter and should not exceed two days. For example, if the fresh lychee is placed in the environment of 0 °C for one day, the skin will be blackened and the flesh will be tasted. Store the bananas at a temperature below 12 °C, which will make the bananas black and rot. After the tomatoes are frozen at low temperature, the meat is blister-like, which appears soft and rotten, or has spallation. The surface has dark spots, uncooked, and fresh. Smell, severe rancidity and decay. The refrigerated fresh-keeping period of spinach is 3 - 5 days. Carrot and celery can be refrigerated for no more than two weeks. Cucumber and green pepper should not be stored in the refrigerator for a long time. Cucumber and green pepper will remain in the refrigerator for a long time, and there will be frozen "injury" --- Turn black, soft, and taste. Leftovers should not be refrigerated for more than 3 days, and cooked meat should not be refrigerated in the refrigerator for more than 4 days. Author: Wang Wanliang

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