Is cold milk good for the body or is hot milk more nutritious?

"Is cold milk good for the body or is hot milk more nutritious?" I believe that many partners have had similar troubles.

First, let's understand what milk is? Milk is a complex biological fluid, which is a complex system composed of proteins, lipids, carbohydrates, salts, minerals, trace elements, vitamins and enzymes in the form of soluble, colloidal and emulsified states

Q1: What is the effect of heat treatment on the nutritional content of milk?

Will heating to boiling cause loss of nutrients in milk? Let's take a look at the changes of various nutrients in milk during heat treatment

Milk protein: The protein in cow's milk is the most susceptible component to heat treatment

Not only does it affect the flavor of milk, but high temperature heat treatment will cause intramolecular and intermolecular cross-linking reactions of milk proteins, reducing the solubility, digestibility and nutritional value of proteins

Milk fat: Milk fat is relatively stable and is a non-heat-sensitive component.

Lactose: When heated below 100°C for a short time, the chemical properties of lactose are basically unchanged

Vitamins: The fat-soluble vitamin A, vitamin D and vitamin E in milk, as well as the complex vitamins riboflavin (vitamin B2), pantothenic acid, biotin and nicotin are relatively stable to heat, and only when sterilized and heated for a long time, vitamin A , vitamin E and vitamin B2 content will be reduced

All in all, the processing temperature will have a certain impact on the nutritional value of milk, and the higher the processing temperature and the longer the processing time, the greater the damage to the nutritional value of milk.

Q2: Hot milk will destroy its nutritional value.

Cold milk will affect the gastrointestinal motor function, which may cause gastrointestinal disorders in some people to varying degrees, resulting in some nutrients in milk not being absorbed and utilized, so it is not advisable to drink more cold milk

To sum up, we should choose to drink normal temperature milk or heat the milk properly

Q3: How to heat milk is correct? What is the temperature?

The correct operation is: you can choose to boil the milk with a small fire until it is slightly bubbling.

(Pang Xiaoyang Fan Bei, researcher at the Institute of Agricultural Products Processing, Chinese Academy of Agricultural Sciences) (Editor Li Chuang)