Some green leafy vegetables not only destroyed the nutritional value overnight, but also produced pathogenic nitrite. After frying, there is oil and salt in the dish. After a night, the vitamins in the vegetables were oxidized, and the content of nitrite increased greatly, which became nitrite after entering the stomach. Although nitrate is not a direct carcinogen, it is very harmful to health. One of the risk factors of nitrous acid-induced gastric cancer. Especially when the weather is hot, overnight meals are contaminated by bacteria, which will multiply and easily lead to gastroenteritis and food poisoning. Not edible.
The reason why meat can be eaten overnight:
Braised pork in brown sauce is a favorite food. Some people are unhappy without meat and eat meat almost every day. But burning meat often takes a long time to cook, and many people don't have that much time. So we often burn more meat at a time and put it in the next meal after eating. Protein, minerals and other nutrients in meat are relatively more, while vitamins are relatively less. Therefore, even if it is heated for a long time or even many times, the loss of nutrients inside is not serious. So as long as it is properly preserved, it is completely possible to put meat overnight.