Skimmed milk should be heated and boiled after freezing before consumption. However, it is best not to freeze the milk, as it affects the taste and destroys the nutrients.

Drinking milk is best done by boiling the milk first, cooling it at room temperature afterwards, and then drinking it when the temperature of the milk is close to the skin temperature (25℃~30℃). Milk is more likely to become acidic. So after you take out the milk, you have to be careful to heat it over a rapid fire so that it doesn't become acidic.

Milk should not be frozen. Because milk contains three different properties of water, of which the free water content is the most, not combined with other substances, only play the role of solvents; combined with water, is with protein, lactose, salts combined with water, no longer dissolve other substances, does not freeze; crystalline water, is crystallized in lactose and lactose crystals together with the presence of water. When the milk freezes, free water freezes first, the milk from the outside to the inside of the frozen, covered with dry matter (protein, fat, calcium, etc.) As the freezing time is prolonged, the content of dry matter inside the corresponding increase in the dry matter, dry matter does not freeze. At this time, the outer layer of milk light color, dark color inside, after thawing, the milk protein is easy to precipitate, coagulation and deterioration.

Milk storage method

1, milk is most afraid of high temperature, in a high temperature environment, milk is most likely to deteriorate. So save milk in the refrigerator, avoid high temperature storage.

2, do not let the milk exposure to sunlight or light, sunlight, light will destroy several kinds of vitamins in the milk, but also will make it lose its aroma.

3, milk in the refrigerator, the bottle cap should be covered, so as to avoid other kinds of odor into the milk.

4, milk poured into cups, teapots and other containers, such as not finished, should be covered and put back in the refrigerator, do not pour back to the original bottle.

5, too cold on the milk also has a negative impact. When milk is frozen into ice, its quality will be damaged. Therefore, the milk should not be frozen, into the refrigerator can be chilled.