It is a virtue not to waste food. To avoid wasting food leftovers, many people left the leftovers to enjoy them tomorrow. Scientific research shows that some foods are not suitable for overnight stays. Overnight foods can cause certain harm to the human body.

1, overnight eggs, you can eat it?

Scientists: It depends on the circumstances! Because if the eggs are not fully cooked, the unripe egg yolks will be eaten overnight. If the eggs are not well-preserved, things will be prone to bacterial growth and will be harmful to health, such as causing gastrointestinal discomfort and flatulence. However, if the eggs are cooked and stored properly at low temperatures (usually refrigerated), they can generally be stored for 48 hours without problems.

From the scientists’ tips, we can know: Eggs can not be eaten overnight, not only to see whether it is heated, but to cook eggs for the first time, only cooked eggs for the first time. After that, it is not a problem to eat cooked overnight. Tea leaves are just like this. Maybe we don’t know that the tea eggs are boiled twice and cooked for the first time. The second time the eggs are broken and the tea is added. Accessories, cook again, so the tea is certainly cooked eggs, and now some people love to eat medium rare eggs, (the egg yolk is semi-liquid) that kind of eggs can not be eaten overnight, even if cooked for the second time, do not eat Now.

2, can not drink boiling water overnight?

The tap water is boiled for 3 to 5 minutes. The content of harmful substances such as nitrite and chloride is the lowest, and it is most suitable for people to drink.

Drink less water overnight: Nitrite can form carcinogenic nitrosamines in the human body. Some experts have found that the nitrite content in boiling water is higher than raw water. In addition, the boiled water that has been boiled for too long or over 24 hours repeatedly has a significant increase in nitrite content. After 24 hours of boiling water, the nitrite content was 1.3 times when it was boiled. Our residents have a habit of drinking and drinking water. It is best to burn or drink only the boiling water of the day, and do not drink boiled water for too long.

3, overnight tea can not drink

Overnight tea for too long, most of the vitamins have been lost, and the protein and sugar in the tea soup will become the nutrients for bacteria and mold propagation. Therefore, people often think that overnight tea cannot be consumed.

Tea is generally retained in the human body for about 3 hours, while the strong tea stays longer, so that theophylline accumulates in the body, resulting in neurological dysfunction. When the tea is put for a long time, not only will it lose vitamins and other nutrients, but it will easily degenerate. Even the tannic acid in tea water will become a very irritant oxide, which will easily hurt the spleen and stomach, especially in the summer, and it will cause gastrointestinal inflammation.

4, can not eat white fungus overnight?

Tremella soup is an advanced nutritional supplement, but overnight, nutrients are reduced and harmful ingredients are produced. Because both the white fungus grown indoors and the tremella cultivated in the wild have a lot of nitrates, such as the release of a long time after cooking, under the decomposition of bacteria, nitrate will be reduced to nitrite. When people drink this kind of soup, nitrous acid naturally enters the blood circulation, hemoglobin in the red blood cells in the blood, and can carry a large amount of oxygen for the body's needs. However, nitrous acid reacts counter-productively, causing the normal hemoglobin in the human body to oxidize to methemoglobin, losing the ability to carry oxygen and causing the body to lack normal hematopoietic function!

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