Milk and cola will happen what chemical reaction is as follows:

Cola cola in the carbonate ions and milk in the calcium ions will react to generate calcium carbonate white precipitate. The carbonic acid, potassium sorbate and other preservatives in Coke will denature the proteins in the milk to produce a white flocculent.

A, milk

Milk as a complete food, at any time of the day intake is appropriate, but from the point of view of nutrient absorption, you should try to avoid drinking on an empty stomach or gastrointestinal peristalsis faster, so that the nutrients in milk can be fully absorbed by the body. If you drink before going to bed, to help improve the quality of sleep, and the human body in a deep sleep 1 hour after the growth hormone secretion reached its peak, the milk can provide sufficient calcium and other nutrients, to help the body's development and health.

Fresh milk can be divided into low-temperature fresh milk and room temperature milk according to the sterilization method. Low-temperature fresh milk pasteurization, need to be kept at low temperatures, the shelf life is generally 1 to 2 weeks. Ambient milk is sterilized by ultra-high temperature and can be stored at room temperature, with a shelf life of 6 to 9 months. Comparatively speaking, the degree of destruction of nutrients in low-temperature preserved milk is relatively small, so the nutritional value is higher than room temperature milk.

Two, types

1, pasteurized milk, pasteurization method of sterilization, the need for the entire 4 ℃ -10 ℃ refrigeration, more popular. Maximum retention of nutrients in milk. Shelf life of the shorter milk is more pasteurization method of disinfection of "homogeneous" milk, with this method of disinfection can make the nutrients in the milk to obtain a more ideal preservation, is today one of the world's most advanced milk sterilization methods.

2, room temperature milk, the use of ultra-high-temperature sterilization method, can kill all the harmful bacteria, shelf life extended to 6-12 months, without refrigeration. But the nutrients will suffer a great loss.

3, reduced milk, milk powder can not be used for pasteurized milk, but room temperature milk, yogurt and other dairy products can be used, but must be marked as "recovered milk" or "water and milk powder".

4, fresh milk, in many developed countries, unpasteurized fresh milk is the most popular among consumers, but also the most expensive. Newly milked milk contains lysozyme and other antibacterial active substances, can be stored at 4 ℃ for 24 hours to 36 hours. This kind of milk does not need to be heated, not only rich in nutrients, but also retains some of the trace physiological active ingredients in milk, which is very beneficial to the growth of children.