If you buy fresh milk processed at home, it is unnecessary to cook it for the first time. Because the standardized fresh milk of dairy enterprises has undergone strict sterilization treatment, its strict packaging can ensure that the microbial indicators, nutritional indicators and sensory indicators of the products meet the relevant national standards during the shelf life.

So this kind of milk can be drunk directly, but it will cause the loss of nutrients after cooking.

If you don't drink it right away, you must boil it next time. Because milk is mixed with bacterial air after opening, and it is not easy to seal, even if it is put in the refrigerator, it will be contaminated by miscellaneous bacteria, and direct drinking may bring problems such as diarrhea. Boiling milk must follow the principle of "stirring while boiling, and turning off the fire when foaming".

Because milk is a kind of food with high nutrition, it is easy to have fat and other ingredients to paste the pot. Proper stirring can avoid this phenomenon. When boiling milk, controlling the temperature is also the key. As long as the milk is hot enough to bubble, it should be boiled, which can turn off the fire, not only play a role in sterilization, but also avoid the loss of vitamins and other nutrients in milk.

Extended data:

Taboos for drinking milk

1, avoid cooking with sugar. Many people add sugar when boiling milk, thinking that sugar can melt as soon as possible, but adding sugar when heating is unscientific. Because milk contains lysine and sugar contains fructose, these two substances form a combination at high temperature, called fructose lysine.

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, do not put sugar in milk when it is heated. If you want to drink sweet milk, add sugar when the milk is slightly cold.

2. Don't eat with oranges. Milk is decomposed by pepsin and trypsin in the stomach and then absorbed by the small intestine. If milk contains fruits with high acidity, such as oranges, the complex biochemical reaction between fresh milk protein and fruit acid and vitamin C will solidify into pieces, which will affect the digestion and absorption of vitamin C in milk protein and oranges and cause adverse reactions, such as abdominal distension, abdominal pain, diarrhea, etc., and the same food will not be worth the loss.

References:

People's Network-Does the milk need to be boiled? What are the taboos and misunderstandings about drinking milk?