The boxed pure milk can be heated, but the premise is to pour the milk out to heat, otherwise boxed or bagged milk if even the packaging is heated, it will make the box or bag of chemicals penetrate into the milk, and therefore produce unhealthy chemical toxicity, but if the milk is poured out can be heated, because the pure milk are instantly sterilized by high temperatures, but heated to boil off the fire can be.

Milk moderately heated is good, it is best not to add too hot, the longer the milk heated, the higher the temperature, which the loss of nutrients will be more serious, mainly vitamins, which the loss of vitamin C is the most powerful, followed by lactose. Heating milk to drink, more than cold milk can make the stomach and intestines active, so that good absorption to the end. If you cook for a long time, it will inevitably cause the loss of milk nutrients, so you can even box together in the hot water temperature for a few minutes on the line.

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Milk heating

Milk is suitable for cooking with a high fire, the time required to cook milk with the fire is longer, the milk vitamins and other nutrients in the milk is easy to be oxidized by the air and destroyed, thus reducing the nutritional value of milk.

But it is important to note that milk should not be cooked at high temperatures for a long time. Some people in order to sterilize thoroughly, it is a long time to cook milk at high temperature, which is not right. Milk is rich in protein, when heated, milk in the colloidal state of protein particles will be a big change.

When the milk is heated to 60 ~ 62 ℃ when the dehydration phenomenon will occur, which the protein particles will be soluble state into a gel state, and then there will be precipitation; when the temperature reaches 100 ℃, the milk in the lactose caramelization, so that the milk becomes brown, and gradually decompose to generate lactic acid, and at the same time produce a small amount of formic acid, so that the milk becomes acidic. In this way, not only the color, aroma and taste of milk deterioration, nutritional value is also greatly reduced.

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