The cold storage room is suitable for storing foods around 5℃, such as eggs and vegetables. The freezer is suitable for foods stored below-18℃, such as meat and quick-frozen foods. The best cold storage temperature of fresh fish is -3℃, at which the fish is not easy to deteriorate and the freshness can be guaranteed. Tomatoes, potatoes, coffee, honey and other foods should not be refrigerated in the refrigerator.
Extended data 1. Bacterial reproduction needs to be at a certain temperature. In the temperature range of 10-60℃, bacteria grow and multiply quickly, which makes food go bad. Therefore, 10-60℃ is called "the dangerous temperature of food", and 37-42℃ is the most dangerous. Heated food should avoid being exposed to dangerous temperatures for more than 2 hours, and should be put in the refrigerator in time.
Try to reduce leftovers in daily life. The unfinished food should be put into the refrigerator in time, but the refrigeration time should not exceed 3 days. If there are no suitable storage conditions, cooked food with dangerous temperature exceeding 2 hours should be eaten after confirming that the food has not deteriorated and has been fully heated, but the number of repeated heating should not exceed 1 time.
2. Make sure the food is cooked and thoroughly cooked. Most bacteria and viruses can't withstand high temperature, and heating can kill them. When the food is heated, the central temperature reaches above 70℃ and keeps it for more than 30 seconds, thus ensuring the food safety.
3. Food preservation. Foods rich in protein, such as fish, meat, eggs, poultry and bean products, need to be preserved at low temperature. Fresh eggs refrigerated in the refrigerator should be used as soon as possible after being taken out, and cannot be refrigerated again. Because the egg will "sweat" at room temperature after being taken out, small water droplets can destroy the surface protective layer of the eggshell, so that microorganisms contaminated on the surface can easily penetrate the eggshell and enter the egg.
References:
People's Daily Online-Leftovers should not be refrigerated for more than 3 days.