Vitamin A can promote the growth and development of human body, maintain the normal function of mucosa and epithelial tissue, and is also an important component of rhodopsin synthesis. Vegetables are rich in "β-carotene" and have the highest conversion rate. Each molecule of β -carotene can produce two molecules of vitamin A in human body. Regular consumption of vegetables rich in β -carotene can promote growth and development, prevent dry eye and night blindness, and also play a role in beautifying, moistening and rejuvenating the skin.
Vitamin B is very important for carbohydrate metabolism. Lack of vitamin B can lead to loss of appetite, nausea, vomiting, constipation, muscle pain, paralysis, lower limb paralysis, and the well-known beriberi.
Vitamin C participates in the biotransformation of various substances in the body, such as collagen synthesis, cholesterol transformation, catecholamine and 5- hydroxytryptamine, etc., regulates nerve activity, promotes the metabolic transformation of drugs and poisons, and enhances detoxification. Vitamin c also has a cosmetic effect. Sunbathing in summer can easily lead to black pigmentation "spots" on the skin, and vitamin C can inhibit the formation of black spots. Because the body's own metabolism can't produce vitamins, it must be supplied by food, so vegetables are the main source necessary for the human body. When the mouth is dry, drinking plenty of water will lead to the dilution of gastric juice, reduce appetite and create conditions for the breeding of germs. If you want to avoid germs coming to your door, choose one or two kinds of vegetables (vegetable food) with bactericidal effect every time you eat, which can play a very good role in disease prevention.
When eating antibacterial vegetables, you should eat them raw or fry them for a short time. Onions, garlic, etc. Can be used as seasoning, can be added in cold salad or before cooking, and can better play its antibacterial role. It should be noted that vegetables are not medicines after all, and may contain bacteria. Be sure to wash thoroughly before eating, and don't take it lightly, because they have antibacterial and bactericidal effects.
People eat out more. Once you eat unsanitary food, germs can easily breed and spread in high temperature and high humidity environment, causing intestinal diseases. In addition, drinking plenty of water when dry mouth will lead to the dilution of gastric juice, thus reducing appetite and creating conditions for the breeding of germs. If you want to avoid germs coming to your door, choose one or two kinds of vegetables (vegetable food) with bactericidal effect every time you eat, which can play a very good role in disease prevention. Vegetables with sterilization function mainly refer to onion and garlic, such as garlic, green onion, leek, onion, green garlic and garlic seedlings. These plants are rich in broad-spectrum fungicides, which can kill and inhibit various cocci, bacilli and fungal viruses. Among them, the most prominent role is garlic. Allicin, the main antibacterial component contained in garlic, can effectively kill pathogenic bacteria. It should be noted that in order to make garlic (garlic food) play its bactericidal role best, it is best to eat it raw and eat a few cloves of garlic paste every day, which can effectively prevent the occurrence of acute dysentery and enteritis; When garlic is cooked, its function will be greatly reduced.
In addition to onions and garlic, some other vegetables also have certain antibacterial and anti-inflammatory (anti-inflammatory food) effects. Such as purslane, dandelion and other wild vegetables, eat more in spring and summer, which can not only adjust the taste, but also have the function of disease prevention and health care (health food). Some vegetables we usually eat have antibacterial effect, and the effect is better after being squeezed into juice. Such as chinese cabbage juice, cucumber juice, which contains selenium to enhance the bactericidal ability of white blood cells in the human body, and has a certain effect on periodontal disease caused by gum infection. Sour vegetables such as tomatoes can promote the production of gastric juice and increase gastric acid, thus reducing bacterial reproduction caused by insufficient secretion of gastric juice.
It can be seen that vegetables are an indispensable and important food for human beings, and are an important source of vitamins, minerals, protein, carbohydrates and other nutrients, and can stimulate appetite, regulate the acid-base balance in the body, promote intestinal peristalsis, and achieve the effect of detoxification. In a word, vegetables can regulate human blood circulation, digestive system and nervous system, so they play an important role in maintaining normal physiological activities and improving health.
There are many kinds of vegetables, which are cheap and good. Because of different species and varieties, they contain different nutrients. Only through reasonable selection and blending can we meet the needs of various vitamins, minerals, amino acids and other ingredients for human health. The Chinese nation has a long history of using dietotherapy to preserve health. It is recorded in "Mountain Seascape Show Martial Training" that Shennong "tasted the taste of herbs and the sweetness and bitterness of water springs, so that people can know and avoid them", which vividly reflects the magnificent historical facts of how the ancients sought food.