Green tea refers to green tea made from fresh leaves by high-temperature enzyme fixation, rolling and drying (without fermentation). Its quality has the characteristics of dry tea color green, soup color green and leaf bottom green. According to different methods: frying, roasting, steaming and drying in the sun, the quality characteristics are different. (1) Stir-fried green tea: Any green tea stir-fried in a pot is called stir-fried green tea. (such as Longjing, "Biluochun", Yuhua Tea, etc. (2) Baked green tea: Any green tea dried in a drying cage or dryer is called baked green tea. (such as Huangshan Mao Feng, Taiping Monkey Kui, Gao Qiao Yinfeng, etc. (3) Sun-cured green tea: Any green tea that is dried in the sun or dried first and then fried first is called sun-cured green tea. Yunnan Green, Sichuan Green, Shaanxi Green, etc. (4) Steamed green tea: All green tea made by steam deactivation process is called steamed green tea. The efficacy of green tea (fried tea, Yulu, etc. ) the same is true. Green tea is non-fermented tea, and the process of green tea retains the effective components in tea to the maximum extent. It has natural color, fragrance, taste and shape, especially high content of vitamin C and tea polyphenols. Green tea is superior to other teas in nutrition and medical care. The main functions of green tea can be summarized as follows: it has the functions of bacteriostasis, promoting fluid production to quench thirst, clearing heart fire and improving eyesight, promoting diuresis and detoxification, promoting digestion and fatigue, supplementing nutrition, whitening skin, relieving fatigue, strengthening heart and lowering blood pressure, resisting cancer and radiation, preventing arteriosclerosis and hypertension, delaying human aging, and promoting human metabolism and fat oxidation.

There are tens of thousands of TCM syndromes in Shang family to answer this question.

The green tea mentioned by the subject is the earliest tea in history, with a history of at least 3000 years.

Green tea, also known as "non-fermented tea", is made from suitable new shoots of tea trees through typical technological processes such as enzyme fixation, rolling and drying. The color of dry tea, brewed tea soup and leaf bottom is mainly green, which retains more natural substances in fresh leaves.

Green tea contains 20%~25% sugar, 25%~30% protein and amino acids, about 3% free organic acids, about 10% fats and lipids, and is also rich in vitamins and trace elements. After being absorbed by human body, it can provide material and energy for human physiological regulation and supplement human nutrition.

Tea polyphenols, active polysaccharides and other effective components in tea have many functions, such as anti-radiation, anti-bacteria, anti-oxidation, lowering cholesterol and promoting blood circulation.

1. Refreshing and relieving fatigue

Green tea contains alkaloids, most of which are caffeine, theobromine and aminophylline. These substances can excite the central nervous system, promote metabolism and blood circulation, reduce fatigue, enhance heart and kidney function and keep people awake.

2. Reduce blood lipids

Green tea can promote the transformation and absorption of lipids and lower blood sugar.

Alkaloids such as adenine in tea can form nucleotides with glucose and phosphoric acid, while nucleotide compounds can decompose fluorine-containing compounds and convert them into soluble absorption substances, thus reducing fat.

3. Fixing teeth and preventing diseases

Green tea contains fluorine, which can strengthen teeth and prevent dental diseases. It can also eliminate oral odor.

Protect your eyes and improve your eyesight.

Tea contains vitamin C, vitamin B 1, vitamin B2, vitamin A and other substances, and vitamin A is one of the main nutrients needed by the retina in the eyes. Vitamin B 1 is the substance to maintain the physiological function of optic nerve; Vitamin C is a nutrient for intraocular lens, which can protect eyes and improve vision.

5. Beautiful and beautiful

Tea, as a drink, especially the green tea mentioned by the subject, is rich in vitamin C, which can prevent skin aging and remove skin impurities.

Drinking green tea regularly can help skin smooth, white and tender, and reduce wrinkles.

This answer was compiled by the certified doctors of the Internet health management platform for Chinese medicine professionals. If you have more questions, please search Shangyi's family and leave a message backstage for consultation.

China has a long history of tea culture, and many scholars love to taste tea. They also use tea as various materials to describe and praise it in their articles. In fact, tea is not only delicious, but also the effective components in tea have certain health care functions.

What are the health functions of green tea? First of all, we all know that tea contains an effective component called tea polyphenols. Modern scientific research has proved that tea polyphenols have antioxidant effect, have protective effect on cardiovascular and cerebrovascular diseases, help to eliminate free radicals and delay human aging.

In the process of our body oxidation, free radicals will be produced, which will lead to the aging of our body. If you often drink tea, then tea polyphenols can help you better remove these free radicals. At the same time, tea is rich in amino acids and protein substances, which are also the nutrients our body needs.

Green tea also contains a variety of vitamins and trace elements, such as vitamin C, vitamin b 1, vitamin A and so on. These are all substances that our human body needs. Drinking green tea often can help us to supplement various vitamins and trace elements.

Drinking more tea can not only replenish water, but also relax the mood. The fragrance brought by tea is intoxicating. In a good mood, the body is not short of water, and the nutrients in tea help to resist oxidation. The more you drink, the more beautiful you become. The healthier you drink.

Green tea is one of the six major teas in China, and it is not fermented. There are many benefits of drinking green tea, and everyone knows it more or less. But many people only know the benefits of drinking green tea, but they don't know what taboos green tea has. Today, I will introduce the advantages and disadvantages of green tea to you.

1, diuretic to relieve fatigue; Caffeine contained in green tea can stimulate the kidney, improve the working efficiency of the kidney, promote the rapid excretion of urine and reduce harmful substances in the kidney;

2. Beauty; Tea polyphenols in green tea can scavenge free radicals in the body and have antioxidant effect, so it can prevent aging. Tea polyphenols can also reduce facial greasy, shrink pores, and play the role of beauty beauty;

3, anti-cancer and anti-cancer; Tea polyphenols in tea can inhibit the formation of nitrosamines in vivo and improve the anti-cancer effect of the immune system. According to scientific research, tea polyphenols can play a very good auxiliary role in the treatment of intestinal cancer and gastric cancer.

4, refreshing; Caffeine contained in green tea can not only induce diuresis to relieve fatigue, but also excite human nerves, thus prolonging the excitement time of cerebral cortex and refreshing the brain.

5. Prevent obesity; Tea polyphenols in green tea can not only prevent obesity, but also play a good role in adjuvant treatment of cardiovascular diseases.

1, green tea has a refreshing effect, so people with insomnia and neurasthenia should not drink tea before going to bed;

2, it is not advisable to drink tea on an empty stomach, otherwise it will reduce the digestive function, and it will also cause bad ingredients in tea to enter the blood, causing dizziness and other symptoms;

3. It is not advisable to use tea for the first time to prevent pesticide residues in tea from entering the body and affecting health.

Efficacy and function of green tea