Thrift is a traditional virtue of the Chinese nation, but for many older people, they always like to leave some food that they can't eat and then eat it the next day. In fact, it's a particularly unhealthy way of life. Many overnight foods are easy to cause cancer, so don't eat them at will.
What can't be eaten overnight?
1. Tremella soup
Tremella soup is a nutritious tonic that many women prefer, but it contains a lot of nitrates. If it is placed for a long time, it will produce some harmful substances. Nitrous acid will oxidize the normal hemoglobin in the human body to methemoglobin, lose the ability to carry oxygen, and make the human body lose its hematopoietic function, which is very harmful to the human body.
2. Overnight boiled water
After the tap water is boiled, place it for 3 to 5 minutes before drinking. At this time, the content of nitrite, chloride and other harmful substances in the tap water is the lowest, which is most suitable for drinking. If the storage time is too long, the content of nitrite will increase obviously, so try not to drink boiled water overnight.
3. Seafood
After a night, seafood will produce a large number of protein degradation products, which are very harmful to human body and damage the liver.
4. Overnight tea
For too long, the protein and sugar in the overnight tea will become the nourishment for bacteria and mould to reproduce in large quantities, which has no nutritional value.
5. Overnight vegetables
Some green leafy vegetables contain more nitrates. If they are cooked for a long time, the nitrates will be reduced to nitrite under the decomposition of bacteria, which has carcinogenic effect. Therefore, it is strongly not recommended to eat them.
The above five kinds of overnight food should not be eaten at will. It's good to be thrifty, but it won't pay to go to the hospital because of eating overnight food. So the best way is to do less, and then try to eat the same day.