I heard that overnight dishes are a health killer. If you want to accurately define overnight dishes, they are dishes that have not been eaten for a period of time after cooking. Generally, it can be said to be overnight dishes after standing for about 5-8 hours.
Many people will say that overnight vegetables are carcinogenic, mainly because of the presence of nitrite in overnight vegetables. In fact, nitrite is not uncommon. It is found in grains, vegetables, fish, eggs and meat. In fact, nitrite is not carcinogenic. The carcinogen is the reaction of secondary amines, which are the product of protein breakdown, to form nitrosamines under the action of gastric acid, and it is also a strong carcinogen. Will eating overnight dishes produce nitrosamines?
There are two situations where nitrosamines are produced. The first is long-term and repeated eating of overnight vegetables, and the other is the reaction of secondary amines, which are the product of protein breakdown, under the action of gastric acid. That is, overnight dishes do increase the nitrite content. For general vegetables, meat and seafood, if the storage temperature is around 4°C, the nitrite content will basically not change after 24 hours. In other words, in the case of fresh or frozen, overnight dishes can be eaten within 24 hours.
Nitrite is a carcinogen, yes, but it is also a legal food additive. It is mainly used for color protection and preservation of food. It is widely used in meat products, because meat products may be infected with botulinum and botulinum. It's really going to die. So in order to inhibit the growth of botulinum, add some nitrite as a preservative.
The national standard also stipulates that the residual amount of nitrite after food products shall not exceed 30mg/kg to further ensure food safety.
The content of nitrite added in sausages and luncheon meat is much lower than leftover vegetables left at room temperature for 24 hours. So instead of worrying about buying foods containing nitrites, it's better to eat less overnight leftovers.
Source: Mobile Public Account
