Heating milk will reduce the nutritional value of milk. Many nutrients in milk, such as vitamins, protein and bioactive substances, are sensitive to high temperature and are easily destroyed during heating.

The higher the heating temperature, the longer the heating time and the more serious the damage. In particular, some friends will pour milk into a pot and boil it directly, or put it in a microwave oven to heat it at high temperature, which will greatly reduce the nutritional value of milk.

Experiments show that once the milk is heated above 60℃, the nutrients begin to be destroyed. When heated above 100℃, many protein components will undergo denaturation reaction, and a large number of vitamins will be lost. In particular, the bioactive components, which can be called milk essence, are easily destroyed after intense heating.

If you want to drink hot milk, it is not recommended to heat it in a microwave oven with packaging, nor to boil it before cooling it. The best way is to put the milk in hot water at about 80℃ and shake it from time to time. When the water temperature drops to a suitable temperature, the milk will be warm, which is not only safe and fast, but also retains the nutrients to the maximum extent.

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Taboos for drinking milk:

1, avoid boiling with sugar.

Milk contains lysine and sugar contains fructose. These two substances will form a combination-fructosyl lysine at high temperature. This substance can't be digested and absorbed by human body, which destroys the nutritional value of protein. To make matters worse, it may be toxic to human body. Therefore, never put sugar in milk when it is heated. If you want to drink milk with sugar, you can wait until the milk is slightly cold before adding sugar.

2, avoid eating with oranges.

Milk is decomposed in the stomach by pepsin and pancreatin, and then absorbed in the small intestine. If milk is eaten with oranges and other fruits with high fruit acid content, protein in milk will have a complex biochemical reaction with fruit acid and vitamin C, which will affect the digestion and absorption of protein in milk and vitamin C in oranges, and there will be adverse reactions such as abdominal distension, abdominal pain and diarrhea.

3. Avoid adding chocolate.

Milk is rich in protein and calcium. When eating with chocolate, calcium in milk combines with oxalic acid in chocolate to form insoluble calcium oxalate, which can not only be absorbed by people, but also cause hair dryness, diarrhea and calcium deficiency after a long time. Therefore, the time for drinking milk and eating chocolate should be separated, and it is best to eat carbohydrates such as biscuits and bread when drinking milk.

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Do you want to heat the milk before drinking it? -People's Network