The source of bitter tea is the leaves of Ligustrum lucidum in Oleaceae. This series can be collected all year round. Indications-The function of bitter tea leaves is to clear away heat and detoxify. Treat fire eye, oral carbuncle, toothless, breast carbuncle, swollen poison and soup fire injury. Administration and dosage: decocted ointment. External use: decoct in water, grind into powder, mix and apply, or boil and apply with ointment. Prescription 1: at the beginning of treating fire eye: decoct and filter five or six Jin of bitter tea leaves, then boil them into paste, spread them on paper, make them into plaster, and apply them externally twice, once a night, three or four times. Also treat all unknown swelling, sores and ulcers, and apply ointment cloth. It also treats children with fever and rotten mouth, regulates the temperature of boiling water, and takes it three times a day to treat abdominal heat and abdominal pain. (2) Treatment of hot teeth: After mashing bitter tea leaves, put them into the teeth. (3) For patients with ulcerated mastitis and yellow water: dry bitter tea leaves and wax leaves in the sun and grind them into powder, then decoct them with bitter tea leaves, wash them with water, and apply this liquid to the affected area, but keep the head and change it once a day. (4) Treatment of suppuration caused by fire in soup: Bitter tea leaves are baked to dryness, and the wound is cleaned by decocting bitter tea leaves with water before applying this medicine. The effect of green tea is 1. Green tea has the function of protecting gastrointestinal function. Catechin can inhibit H-K-ATPase in gastric mucosa, thus fundamentally inhibiting the secretion of gastric acid and reducing the stimulation and damage of gastric acid to gastric mucosa. Catechin can also treat ulcers. In addition, catechin can relieve gastrointestinal spasm to some extent. Tea polyphenols are also effective in treating constipation, controlling intestinal flora and improving intestinal environment. Studies have shown that catechins in green tea can inhibit some bacteria that cause human diseases without harming the proliferation of beneficial bacteria in the intestine, so green tea has the function of whole intestine. 2. Green tea has antibacterial effect. As a broad-spectrum, powerful and low-toxic antibacterial agent, tea polyphenols have been recognized by scholars in many countries around the world. In many antibacterial tests, it was found that it has different degrees of inhibition and killing effects on a variety of pathogenic bacteria, such as Proteus vulgaris, Staphylococcus aureus, Staphylococcus epidermidis, Streptococcus mutans, Botox, Lactobacillus, Vibrio cholerae, etc., especially on intestinal pathogens. At the same time, it can effectively prevent the infection of drug-resistant staphylococcus, and also has inhibitory activity on hemolysin electrocardiogram and EGCG. In addition, tea polyphenols also have a strong inhibitory effect on pathogenic fungi that can cause human skin diseases, such as tinea capitis, tinea versicolor, tinea sweating and stubborn tinea. Although tea polyphenols have a strong killing and inhibiting effect on intestinal bacteria. But it has protective effect on intestinal beneficial bacteria. For example, it can promote the growth and reproduction of Bifidobacterium, improve the microbial structure in human intestine, improve the immune function of intestine, and play a positive role in improving human health. Studies have shown that catechins in green tea can inhibit some bacteria that cause human diseases without harming the proliferation of beneficial bacteria in the intestine, so green tea has the function of whole intestine. Studies have shown that tea polyphenols can eliminate excessive harmful free radicals in the body, regenerate efficient antioxidant substances such as α-VE, VC, GSH and SOD in the human body, thus protecting and repairing the antioxidant system, which has a significant effect on enhancing immunity, preventing cancer and preventing aging. Drinking green tea for a long time can reduce blood sugar, blood lipid and blood pressure, thus preventing cardiovascular and cerebrovascular diseases. The medical research team of Showa University in Japan diluted 1 ml tea polyphenols solution to 1 of the concentration of ordinary tea, and put it into 10000 highly toxic Escherichia coli 0- 157. Five hours later, all the bacteria died, leaving none. 3, green tea has the effect of slimming and reducing fat. Green tea contains theophylline and caffeine, which can activate protein kinase and triglyceride lipolytic enzyme through multiple functions, reduce the accumulation of fat cells, and thus achieve the purpose of losing weight. Among all kinds of teas, green tea does contain a lot of EGCG, which accelerates calorie burning, which may also be the reason why green tea can lose weight. 4. Green tea has the effects of preventing dental caries, removing bad breath and improving eyesight. Green tea contains fluorine, in which catechins can inhibit the action of dental caries bacteria and reduce the occurrence of dental plaque and periodontitis. Tannic acid contained in tea has bactericidal effect, which can prevent food residues from breeding bacteria, so it can effectively prevent bad breath. The health care function of green tea has been recorded since ancient times. Green tea contains catechins, β-carotene, vitamin C, vitamin E and so on. It has a miraculous effect on scavenging free radicals, delaying aging and preventing cancer. In addition, it can also prevent cell gene mutation, inhibit the growth of malignant tumors, lower blood lipid and blood pressure, prevent cardiovascular diseases, prevent colds and tooth decay, and eliminate bad breath. Green tea contains fluorine, in which catechins can inhibit the action of cariogenic bacteria and reduce the occurrence of dental plaque and periodontitis. Tannic acid contained in tea has bactericidal effect, which can prevent food residues from breeding bacteria, so it can effectively prevent bad breath. The fluorine content in tea is high, and the fluorine content per 100 g of dry tea is 100 mg- 15 mg, of which 80% is water soluble. If everyone drinks 10g tea every day, they can absorb 1mg- 1.5mg of water-soluble fluoride. Moreover, tea is an alkaline beverage, which can inhibit the reduction of calcium in the human body, help prevent dental caries, protect teeth and strengthen teeth. According to relevant data, the experiment of "gargling with tea after drinking" among primary school students can reduce the incidence of dental caries by 80%. According to the investigation of relevant medical units, 28.6% cataract patients have the habit of drinking tea; 7 1.4% have no habit of drinking tea. This is because vitamin C and other ingredients in tea can reduce the turbidity of eyes, and drinking tea often has a positive effect on reducing eye diseases, protecting eyes and improving vision. 5. Green tea has antioxidant effect. Tea polyphenols extracted from tea are a kind of chemical substances containing polyphenol hydroxyl groups, which are easily oxidized into esters to provide proton H, so they have remarkable antioxidant properties. The antioxidant capacity of tea polyphenols is 18 times that of vitamin E and 3 ~ 10 times that of vitamin C. This strong antioxidant capacity of tea polyphenols can scavenge free radicals in the body, block the synthesis of N- nitroso compounds, inhibit the activity of lipoxygenase and lipid peroxidation, and make it show superior prevention in many aspects such as cancer prevention, anticancer, mutation resistance, anti-aging, cardiovascular disease prevention and hepatitis treatment. 6. Green tea has the effect of treating cardiovascular diseases. In recent years, scientists have proved that tea polyphenols have the functions of anticoagulation, promoting fibrinolysis, anti-platelet aggregation, lowering blood pressure, reducing blood lipid, preventing atherosclerosis and protecting myocardium. The treatment of atherosclerosis with tea polyphenols in China has also entered the clinical stage. It is also reported that tea polyphenols can improve renal function, treat renal failure and chronic renal insufficiency, inhibit glomerular basement membrane thickening, and treat primary and renal hypertension. 7, green tea has the effect of removing black spots, wrinkles and other beauty. To be healthy, let the skin drink green tea and eliminate various skin problems such as black spots, wrinkles, freckles and chapped skin. Green tea can be used for skin care and massage. 8. Green tea has anti-aging effect. Antioxidants contained in green tea help to fight aging. Because in the process of human metabolism, if it is over-oxidized, it will produce a lot of free radicals, which are easy to age and cause cell damage. SOD (Superoxide Dismutase) is a kind of free radical scavenger, which can effectively remove excess free radicals and prevent the harm of free radicals to human body. Catechins in green tea can significantly improve SOD activity and scavenge free radicals. Through clinical investigation, it is found that people who drink more than 2 cups of green tea a day are much less likely to suffer from Alzheimer's disease such as cognitive dysfunction than those who drink less than 3 cups of green tea a week. 9. Green tea can prevent radiation damage. Green tea and its oxidation products have the ability to absorb the toxicity of radioactive substances strontium 90 and cobalt 60. According to the clinical trials of relevant medical departments, the treatment of mild radiation sickness caused by radiotherapy with tea extract can reach more than 90%. For cytopenia, the effective rate of tea extract is 865438 0.7%; It has a good therapeutic effect on leukopenia caused by radiation. 10, green tea has refreshing effect. Caffeine in tea can stimulate the central nervous system of human body, enhance the excitement process of cerebral cortex, and have the functions of refreshing the brain, clearing away heart fire and calming the nerves. 1 1, green tea has diuretic and fatigue relieving effects. Caffeine in tea can stimulate the kidney, promote the rapid excretion of urine, improve the filtration rate of the kidney and reduce the retention time of harmful substances in the kidney. Caffeine can also eliminate excessive lactic acid in urine, which helps to eliminate fatigue as soon as possible. 12, green tea has the effect of reducing blood fat and helping digestion. It was recorded in Materia Medica of the Tang Dynasty that the effect of tea was "to lose weight after eating for a long time". There is a saying among the ethnic minorities in China's border areas that "tea is indispensable for a day". Because tea helps digestion and reduce fat, in today's fashionable language, it is helpful to "lose weight". This is because caffeine in tea can increase the secretion of gastric juice, help digestion and enhance the ability to decompose fat. The so-called "long-term eating makes people thin" is here. 13. The anti-allergic and anti-inflammatory effects of green tea show that tea polyphenols have a significant inhibitory effect on hyaluronidase, and the inhibitory activity of theaflavins on gallic acid is 99. 1%. Catechins mainly inhibit rapid allergic reaction, but have little effect on delayed allergic reaction. At present, people's research on the anti-inflammatory and anti-allergic effects of tea polyphenols is limited to the level of animal experiments. Therefore, its pharmacological characteristics need further study and discussion. 14. Green tea can reduce blood lipid. Animal experiments made by scientists show that catechins in tea can reduce total cholesterol, free cholesterol, low-density lipoprotein cholesterol and triglycerides in plasma, and at the same time increase high-density lipoprotein cholesterol. Human experiments show that it can inhibit platelet aggregation and reduce the incidence of arteriosclerosis. Green tea contains flavonol, which has antioxidant effect, prevents thrombosis and platelet aggregation, and reduces cardiovascular diseases. 15, green tea has hypoglycemic effect. Many experimental data prove that tea polyphenols are inhibitors of sucrase, so it can inhibit the conversion of sucrose to glucose, which leads to the decline of blood sugar. In addition, there are a few reports that tea polyphenols can be used to prevent caries, eliminate bad breath, lose weight, beauty and so on. The anti-cancer, anti-aging, hypoglycemic, arteriosclerosis prevention, liver protection and other effects of tea polyphenols may be related to its antioxidant and scavenging harmful free radicals in the body. At present, tea polyphenols have been approved as food antioxidants. Catechin has been listed as a liver-protecting drug in Hungary. In China, tea polyphenols have also been put into production as cardiovascular drugs. However, at present, researchers need to conduct more in-depth research on the pharmacological effects of tea polyphenols in other aspects, so that it can play a role in clinical treatment as soon as possible. 16, green tea has antiviral effect. Japanese researchers found that the extracts of green tea and black tea had inhibitory effects on influenza A and B viruses, while Swiss studies also showed that catechins had inhibitory effects on human respiratory syncytial virus (RSV). In addition, tea polyphenols also have strong antagonistic and inhibitory effects on gastroenteritis virus, hepatitis A virus and plant virus. 17, green tea has anticancer and antimutagenic effects. Many countries at home and abroad have reported studies on tea's anti-cancer, anti-cancer and anti-mutation. A large number of studies have confirmed that tea can not only inhibit the mutation induced by many chemical carcinogens, but also inhibit the mutagenic effect of some mixed carcinogens (smoke concentrated solution, coal tar, smoked fish extract, X-ray). Therefore, tea has different preventive and therapeutic effects on various cancers: esophageal cancer, gastric cancer, liver cancer, intestinal cancer, lung cancer, skin cancer, breast cancer and cloned cancer. Drinking green tea every day can reduce the incidence of ovarian cancer. Women who insist on drinking green tea every day can reduce the incidence of ovarian cancer by nearly 60% compared with other women. Green tea can prevent breast cancer. Four cups of green tea a day can prevent skin cancer;