The content of protein in milk is generally around 3.4%, and its main components are casein, albumin, globulin and fatty membrane protein, in addition to a small amount of enzymes. Milk contains a lot of lysine, which has high utilization rate and belongs to high-quality protein.
Fat particles in milk are very small, highly dispersed in milk slurry and have high digestion and absorption rate. Milk fat ingested by human body can not only promote digestion, but also play an important role in the absorption of vitamins A and D. ..
The carbohydrate in milk is mainly lactose, with a general content of about 4.8%. Lactose can regulate the content of gastric acid, promote gastrointestinal peristalsis, facilitate the absorption of calcium by digestive glands and the secretion of digestive juice, promote the reproduction of lactic acid bacteria in the intestine and inhibit the reproduction of spoilage bacteria.
Experts suggest that drinking a glass of milk in the morning and evening has five advantages:
1. Milk contains potassium, which can keep arterial blood stable when blood pressure is high and reduce the risk of stroke;
2. Iodine, zinc and lecithin in milk can improve the working efficiency of the brain.
3. Magnesium in milk can increase the anti-fatigue ability of heart and nervous system, and zinc in milk can promote wound healing;
4. Calcium in milk can enhance bone density and prevent osteoporosis;
5. Milk contains L- tryptophan and other substances. Drinking it before going to bed can promote sleep.