"A reasonable diet can effectively improve the nutritional status of the human body, enhance the ability to resist viral infection, and help prevent and treat novel coronavirus infection pneumonia. A reasonable diet is a nutritionally balanced diet composed of diversified foods. In the current special period of" war epidemic ", the nutritional advantages of dairy foods are more prominent. "On January 22, Zeng Guo, a professor of West China School of Public Health of Sichuan University, said in an article published on the website of CCTV.
Zeng Guo believed that milk is a kind of natural food with rich nutrients, appropriate composition, easy digestion and absorption, and high nutritional value. Liquid milk, yogurt, cheese and milk powder are common in the market. Milk mainly provides protein, calcium and vitamins B1, B2, etc. It is a good source of calcium and high-quality protein in the diet. The average protein content of milk is 3%. The protein of milk belongs to high-quality protein, and the proportion of essential amino acids meets the human needs, so the bioavailability in the body is very high. Lactose in milk can also promote the absorption of calcium, iron, zinc and other minerals. After fermentation, lactose, protein and fat in yogurt are partially decomposed, which is easier to be absorbed by the human body. At the same time, fermented yoghurt also contains rich probiotics, which are good for human health. However, milk powder is easy to preserve because of its powder characteristics. Some milk powder also adds vitamins, trace elements, probiotics, lactoferrin and other beneficial ingredients, which help to enhance immunity.
During the extraordinary period of fighting against the "COVID-19 epidemic", milk food, with its unique advantages of rich nutrition, easy to eat, easy to carry, easy to store and so on, is particularly suitable for daily consumption by the public. Especially for pregnant women, nursing mothers, children, the elderly and other special groups, as well as medical staff and patients struggling in the front line of the "war epidemic", more attention should be paid to the adequate intake of milk food to ensure the basic nutritional needs and enhance the immunity of the body. It is recommended that adults consume at least 300g of liquid milk or equivalent milk powder and appropriate milk products every day.
Zeng Guo said that when the living area is under control and the going out is limited, families can take advantage of limited opportunities to purchase and store milk food preferentially. At this time, attention should be paid to the following points: Generally speaking, sterilized packaged liquid milk can be stored for a longer period of time, and there is no obvious difference between it and ordinary fresh milk in nutrition, so it can be purchased and stored appropriately. Yogurt needs to be refrigerated, and the product labels of various brands indicate the shelf life. If liquid milk is not available, powdered milk can be selected. Cheese is also an important dairy product. It is a finished product of casein in milk. With low water content and high protein content, it is convenient for transportation, suitable for long-term storage, and also suitable for dairy food.
This article introduces what high-quality protein Zengguo is. Since Italian scientists separated gluten in 1742, human exploration on the significance of protein to life has never stopped. Now we know that protein is not only one of the most important components of the human body, but also an essential material for life activities. Therefore, protein is an essential nutrient for human body and the material basis of life. In the process of life activities, proteins play a variety of important physiological functions, mainly including the following physiological functions: to form and repair tissues and organs; Constitute bioactive substances in vivo to regulate physiological functions; To maintain the normal functioning of immune function; Supply energy. It can be said that there is no life without protein.
Protein is composed of amino acids. There are 20 kinds of amino acids in natural protein, among which 8 kinds of amino acids include leucine, isoleucine, lysine, methionine (methionine), phenylalanine, threonine, tryptophan and valine are essential amino acids for human body. There are 9 kinds of essential amino acids for infants. In addition to the above 8 kinds, there is histidine. Essential amino acids cannot be synthesized in the body and can only be obtained from food. Therefore, the quantity and type of essential amino acids in food protein become the standard to measure the quality of protein. Therefore, in nutrition, it is generally believed that the closer the amino acid pattern of food protein is to the needs of human protein, the easier this protein is to be absorbed and utilized by the human body. This food protein is called high-quality protein. In daily diet, foods rich in high-quality protein mainly include milk, eggs, fish and shrimp, livestock and poultry meat, soybeans and other products, while most milk foods are liquid or semi-solid, which is easy to eat.
Therefore, in the special period of epidemic prevention and control, it is an important dietary principle to ensure adequate dietary protein intake, especially high-quality protein intake, to enhance the body's immunity against epidemic and virus infection. Therefore, it is recommended that people eat more milk and its products.
