Back to the topic, if you want to say which dishes can't be eaten overnight, there are so many dishes in the world that no one can complete the statistics, don't you think? I collected 6 kinds of inedible overnight dishes from the internet, which were published by professional health media and were representative. You can have a look. If it is stored or handled improperly, it should be thrown away.
? 1, overnight green leafy vegetables
Some green leafy vegetables contain more nitrate. If it is left too long after cooking, nitrate will be reduced to nitrite under the decomposition of bacteria. Vitamins in green leafy vegetables almost disappear after repeated heating. Therefore, both fried and cold vegetarian dishes are not suitable for long-term preservation.
? 2. Overnight soup
Boiling soup takes time and effort. People often cook a large pot and eat it for several days. If the leftover soup is left in aluminum pot and iron pot for a long time, it will decompose substances harmful to human body. The best way to preserve soup is not to put seasoning such as salt in the soup. After the soup is cooked, put out what you want to drink that day with a clean spoon, and it is best to store it in the refrigerator with a clay pot or a fresh-keeping box. The problem is caused by harmful substances produced in the soup, so be careful.
3. Pot-stewed overnight
This kind of food has great food safety hazards, even if it is put in the refrigerator, it is not absolutely safe, and it is easy to breed mold and psychrophilic bacteria. It's best to finish the pot-stewed dishes on the same day, and don't leave them for too long.
? 4. Eggs overnight
Many people like to eat half-cooked eggs, but this kind of eggs is not completely sterilized, and the eggs are rich in nutrition, which is particularly easy to breed bacteria and will be dangerous to eat. If the eggs are cooked and well preserved under low temperature sealing, it is no problem to eat them overnight.
5. Tremella and Auricularia overnight
Soak your hair in cold water and put it in the refrigerator. It is suggested that the soaking time is 8~ 12 hours, and it is not advisable to soak for too long. If the soaking time is too long and you forget to change the water, it will be turbid, sticky and smelly, so you should throw it away decisively.
If it is cooked for a long time, it is recommended to throw it away.
6, overnight tea
Most of the vitamins in overnight tea have been lost for a long time, and protein and sugar in tea soup will become nutrients for bacteria and molds to reproduce.
Even the tannic acid in tea may become a very irritating oxide, which is easy to hurt the spleen and stomach and cause gastrointestinal inflammation.
Learn more, the reason why these overnight dishes mentioned above are not recommended is because the toxic components in food have increased. There are two main reasons: 1. Chemicals in food can produce carcinogens, such as nitrite, which cannot be eliminated even by heating; It was polluted by bacteria outside during storage.
You can search online for some authoritative experimental cases related to overnight dishes. For example, the State Administration of Market Supervision and Ningbo Institute of Food Inspection have conducted experiments on overnight dishes. The final experiment shows that whether overnight vegetables can be eaten is related to storage conditions and time. If stored in a cold storage at 4℃, it can generally be eaten overnight; If it is stored at 25℃, it is recommended not to eat it after 12 hours, especially vegetables.
The total number of colonies in the sample was stored at 4℃ (table 1).
Results of the total number of colonies when the sample was stored at 4℃ (Table 2)
Results of total number of colonies in samples stored at 25℃ (Table 1)
Results of the total number of colonies in samples stored at 25℃ (Table 2)
I think many people have heard a saying that overnight vegetables will produce carcinogens, which is supported by theory, because nitrite produced by overnight vegetables will be converted into nitrosamines, which are carcinogens. I say it's a theory, but it's not that terrible, as long as everyone stores it properly. If you can't finish eating, put it in the refrigerator and cover it with plastic wrap, and heat it thoroughly the next day. Don't eat for a long time, don't overeat, basically.