/kloc-At the beginning of the 0/9th century, the composition of tea gradually became clear. After modern scientific separation and identification, tea contains more than 450 organic chemical components and more than 40 inorganic mineral elements. Organic chemical components mainly include tea polyphenols, plant alkaloids, protein, amino acids, vitamins, pectin, organic acids, lipopolysaccharides, sugars, enzymes and pigments. [ 15]? Tieguanyin contains organic chemical components such as tea polyphenols, catechins and various amino acids, which are significantly higher than other teas. Inorganic mineral elements mainly include: potassium, calcium, magnesium, cobalt, iron, aluminum, sodium, zinc, copper, nitrogen, phosphorus, fluorine, iodine and selenium. Tieguanyin contains more inorganic mineral elements such as manganese, iron, fluorine, potassium and sodium than other teas. Component function 1. Catechin: commonly known as tea tannin, it is a unique component of tea and has a bitter, astringent and astringent taste. It can be combined with caffeine in tea soup to reduce the physiological effect of caffeine on human body. Has antioxidant, antimutagenic, antitumor, blood cholesterol and low-density ester protein content reducing, blood pressure rising inhibiting, platelet aggregation inhibiting, antibacterial and antiallergic effects. [ 16]? 2. Caffeine: with bitter taste, it is an important component that constitutes the taste of tea soup. In black tea soup, it combines with polyphenols to form a complex; Emulsifying phenomenon will be formed when the tea soup is cold. Tea-specific catechins and their oxidative condensation products can slow down and maintain the excitement of decaffeination, so drinking tea can keep people awake and have more endurance. 3. Minerals: Tea is rich in potassium, calcium, magnesium and manganese 1 1 minerals. Tea soup is an alkaline food with many cations and few anions. Can help body fluids maintain alkalinity and keep healthy. ① Potassium: Promote the elimination of blood sodium. High blood sodium content is one of the causes of hypertension, and drinking more tea can prevent hypertension. ② Fluorine: It can prevent tooth decay. ③ Manganese: It has antioxidant and anti-aging effects, enhances immune function and contributes to the utilization of calcium. Insoluble in hot water, it can be ground into tea powder to eat. 4. Vitamins: B vitamins and vitamin C: water-soluble, which can be obtained from drinking tea. 5. Other functional components: ① Flavonoids and alcohols can strengthen the microvascular wall and eliminate halitosis. ② Saponins have anti-cancer and anti-inflammatory effects. [ 17]? (3) Aminobutyric acid (GABA) is produced by forcing tea leaves to breathe anaerobically in the process of making tea, and it is said that gaba-tea can prevent hypertension. [ 18]? Medicinal value tea medicine and therapeutic tea have good medicinal effects. In the Tang Dynasty, there was the word "tea medicine" (see "tea medicine" engraved by the kingdom in the fourteenth year); In Song Dynasty, Lin Hong's book "Shanjia Qing Palace" also concluded that "tea is medicine". Tea has at least the following effects: (1) sleep less (2) soothe the nerves (3) improve eyesight (4) clear the brain (5) quench thirst and produce fluid (6) clear away heat (7) relieve summer heat (8) detoxify (9) promote digestion (10) sober up (/kloc-0) "Help me" said: "Bad mouth, tea roots instead of tea." Compendium of Materia Medica: To cure acne itching, it is advisable to burn tea and cigarettes in the room. Cancer prevention: making tea in a pot is more beneficial to health. Compared with simply making tea in a cup filled with boiling water, this method of making tea can release more anticancer chemicals. Disease prevention: black tea has strong antibacterial ability. Gargling with black tea can prevent colds caused by viral diseases, prevent tooth decay and food poisoning, and reduce blood sugar and hypertension. Studies have shown that black tea is as effective as green tea and is more beneficial to the heart. The wonderful use of tea in life can remove dirt and fatigue, so washing your hair with tea can make your hair black, supple and shiny. Moreover, tea leaves contain no chemicals and will not harm hair and skin. Misunderstanding of dietotherapy 1. Avoid drinking tea after eating dog meat. Dog meat is rich in protein, while tea contains more tannic acid. If you drink tea immediately after eating dog meat, tannic acid in tea will combine with protein in dog meat to form tannic acid protein. This substance has astringent effect, which can weaken intestinal peristalsis and cause constipation. Toxic substances and carcinogens produced by metabolism are passively absorbed in the intestine, which is not conducive to health. 2, tea and sugar: tea tastes bitter and cold, the purpose of people drinking tea is to stimulate the digestive gland with the bitterness of tea, promote the secretion of digestive juice, and enhance digestive function. Then use the coolness of tea to achieve the effect of clearing heat and detoxifying. If sugar is added to tea, this function will be inhibited. However, in ancient books, there are also remedies to treat diseases with tea instead of sugar, which can be used as diet therapy. If you drink tea at ordinary times, it is not appropriate to mix sugar. 3, tea eggs: boiled eggs in tea, the concentration of tea is very high, strong tea contains more tannic acid, tannic acid can make protein in food become indigestible solidified substances, affecting the human body's absorption and utilization of protein. Eggs are high-protein foods, and it is not appropriate to cook eggs with tea. 4. Tea mutton: Although eating mutton from time to time is good for your health, when you eat mutton and drink tea, the rich protein in mutton can "marry" the tannic acid in tea, and generate a substance called acid detection protein. This substance has a certain astringent effect on the intestine, which can weaken the peristalsis of the intestine, reduce the moisture in the stool and easily cause constipation. It is not advisable to drink tea immediately after eating mutton. You should wait 2-3 hours before drinking tea. 5. Tea and drugs: Tannic acid in tea can react with some drugs (such as ferrous sulfate tablets, ammonium ferric citrate, berberine, etc.). ) produces precipitation, which affects drug absorption. If you take sedatives (such as phenobarbital and diazepam). ) with tea, caffeine, theophylline and other stimulants in tea will offset or weaken the sedative effect of drugs. 6. Tea and wine: Many people love to drink tea after drinking, trying to achieve the effects of moistening dryness, relieving hangover, promoting digestion and promoting diuresis, but this is not good for the kidneys. Because drinking tea after drinking, theophylline produces diuretic effect, at this time, acetaldehyde converted by alcohol has not been completely decomposed, that is, it enters the kidney due to the diuretic effect of theophylline, and acetaldehyde has a great stimulating effect on the kidney, which is easy to cause damage to renal function. So kidney cold, impotence, frequent urination, testicular pain and other symptoms followed. 7, tea and meat tea diuretic, easy to constipation. 8. Tea and medicine affect drug absorption. 9. Tea and fruit affect the nutrient absorption of fruit.