What is Green Tea
Green Tea, one of the main types of tea in China, is a beverage made by taking the new leaves or buds of the tea tree, unfermented, and through the process of killing, shaping and drying. The color of the finished product and the tea broth after brewing have preserved the green color of fresh tea leaves. Drinking green tea can prevent cancer, reduce fat and weight loss, and can also reduce the nicotine damage to smokers.
Green tea is unfermented tea, retaining the natural substances of fresh leaves, containing tea polyphenols, catechins, chlorophyll, caffeine, amino acids, vitamins and other nutrients are also more. These natural nutrients in green tea have a special effect on anti-aging, anti-cancer, anti-cancer, sterilization, anti-inflammatory, etc., which is inferior to other teas.
Green tea is made from the new tops of suitable tea trees, through the typical process of greening, kneading, drying and other tea. Its dry tea color and brewed tea broth, leaf bottom to green color, so the name green tea. Green tea will be picked fresh leaves first by high temperature greening, kill a variety of oxidative enzymes, to maintain the green color of the tea, and then by twisting, drying and made of clear soup green leaves is the quality of green tea **** the same characteristics.
China's production of green tea is extremely wide range, Henan, Guizhou, Jiangxi, Anhui, Zhejiang, Jiangsu, Sichuan, Shaanxi (southern Shaanxi), Hunan, Hubei, Guangxi, Fujian is China's main green tea-producing provinces.
Effects and functions of green tea
Anti-aging
Green tea contains antioxidants that help resist aging. Because the process of human metabolism, if over-oxidized, will produce a large number of free radicals, easy to aging, but also make the cell injury. SOD (superoxide dismutation) is a free radical scavenger, can effectively remove the excess free radicals, to stop free radicals damage to the human body. The catechins in green tea can significantly increase the activity of SOD and scavenge free radicals.
Green tea antibacterial
Research shows that the catechins in green tea have an inhibitory effect on some of the bacteria that cause disease in humans, and at the same time do not harm the reproduction of beneficial bacteria in the intestines, so green tea has the function of rectifying the intestines.
Reduce blood lipids
Scientists do animal experiments show that tea catechins can reduce plasma total cholesterol, free cholesterol, LDL cholesterol, and the amount of triglycerides, and at the same time, can increase the amount of high-density lipoprotein cholesterol. Experiments on humans have shown that it can inhibit platelet aggregation and reduce the incidence of atherosclerosis. Green tea contains flavonols, antioxidant effect, can also prevent blood clots and platelets into groups, reduce cardiovascular disease.
Slimming and fat loss
Green tea contains theophylline and caffeine, which can activate protein kinase and triglyceride lipase through many effects, reducing the accumulation of fat cells, and thus achieving weight loss.
Anti-caries, bad breath
Green tea contains fluorine, which can inhibit the role of caries-bearing bacteria catechins, reduce plaque and the occurrence of periodontitis. The tannins contained in the tea have a bactericidal effect, which can prevent food debris from breeding bacteria, so it can effectively prevent bad breath.
Cancer
Green tea has an inhibitory effect on some cancers, but the principle is limited to the inference stage. Drinking a lot of tea will definitely have a positive effect on the prevention of cancer.
Whitening and UV protection
Experts have found in animal experiments that the catechins in green tea are resistant to UV-B-induced skin cancer.
Improvement of indigestion
Research in recent years has shown that green tea can help improve indigestion, such as acute diarrhea caused by bacteria, you can drink a little green tea to alleviate the situation.