Fish and seafood can easily produce protein degradation products overnight, which will damage liver and kidney function. Green leafy vegetables contain different amounts of nitrate. If it is overcooked or left for too long, not only will vegetables turn yellow and taste bad, but nitrate will also be reduced to toxic nitrite by bacteria, which will cause cancer. Cold salad is polluted when it is processed. Even if it is refrigerated, it may have gone bad after a night, so it should be cooked and eaten now.
Extended data:
The following overnight foods cannot be eaten:
1, no overnight tea.
After staying overnight for a long time, most of the vitamins are lost, and the protein and sugar in the tea soup will become nutrients for bacteria and mold. So people usually think that overnight tea can't be drunk. Drink less boiled water overnight. Nitrite can form carcinogenic nitrosamines in human body.
2. Can tremella be eaten overnight?
Auricularia auricula soup is an advanced nutritional supplement, but if it is cooked overnight and left for a long time, nitrate will be reduced to nitrite under the decomposition of bacteria. When people drink this soup, nitrous acid naturally enters the blood circulation. Red blood cells in the blood contain hemoglobin, which can carry a lot of oxygen for the body's needs. Nitrite, on the other hand, has the opposite effect, oxidizing normal hemoglobin in human body into methemoglobin, losing its oxygen-carrying ability.
3. Don't eat leafy vegetables overnight.
Because some green leafy vegetables contain more nitrate, if they are left for too long after cooking, nitrate will be reduced to nitrite under the decomposition of bacteria, which is carcinogenic and cannot be removed by heating.
People's Daily Online-Eight kinds of boiled seafood become "poisonous" overnight, so be careful to cause cancer.
People's Daily Online-Overnight dishes "comparable to poison"? The key is the preservation method.