Green tea, English green tea, is one of the main teas in China.
Green tea is made from the new leaves or buds of tea trees, without fermentation, through the processes of enzyme fixation, shaping and drying. , and retains the natural substances of fresh leaves, including tea polyphenols, catechins, chlorophyll, caffeine, amino acids, vitamins and other nutrients. The color is green, and the tea soup retains the green style of new tea, hence the name.
Drinking green tea regularly can prevent cancer, reduce fat and lose weight, and also reduce the harm of nicotine to smokers.
Green tea is produced in many places in China, including Henan, Guizhou, Jiangxi, Anhui, Zhejiang, Jiangsu, Sichuan, Shaanxi, Hunan, Hubei, Guangxi and Fujian.
Value efficacy:
Green tea is known as "national drink". A large number of studies in modern science have confirmed that tea does contain biochemical components closely related to human health. Tea not only has the pharmacological effects of refreshing brain, clearing away heat and relieving summer heat, resolving food stagnation, relieving fatigue and losing weight, clearing away heart fire and vexation, relieving hangover, promoting fluid production to quench thirst, reducing fire and improving eyesight, stopping dysentery and removing dampness, but also has certain pharmacological effects on modern diseases such as radiation sickness, cardiovascular and cerebrovascular diseases and cancer. The main components with pharmacological effects in tea are tea polyphenols, caffeine, lipopolysaccharide, theanine and so on. The specific functions are:
Anti-aging:
It is helpful to delay aging. Tea polyphenols have strong antioxidant and physiological activity, and are free radical scavengers in human body. Studies have proved that 1 mg tea polyphenols is equivalent to 9 micrograms of superoxide dismutase in scavenging excessive free radicals harmful to human body, which is much higher than other similar substances. Tea polyphenols can block lipid peroxidation and remove active enzymes. According to the test results of Tomoyo in Ota, Japan, it is confirmed that the anti-aging effect of tea polyphenols is 18 times stronger than that of vitamin E.
Suppress disease:
Tea polyphenols can inhibit cardiovascular diseases and play an important role in human fat metabolism. The human body has cardiovascular diseases such as high cholesterol and triglycerides, such as fat deposition on the inner wall of blood vessels and atherosclerotic plaques formed after vascular smooth muscle cells proliferate. Tea polyphenols, especially catechins ECG and EGC in tea polyphenols and its oxidation products theaflavins, are helpful to inhibit this mottled proliferation, reduce the formation of fibrinogen that enhances coagulation viscosity, make coagulation clear, and thus inhibit atherosclerosis.
Anticancer effect:
Helps prevent and fight cancer. Tea polyphenols can block the synthesis of carcinogens such as ammonium nitrite in the body, which can directly kill cancer cells and improve the immunity of the body. According to relevant data, tea polyphenols in tea are beneficial to the prevention and adjuvant treatment of cancers such as gastric cancer and intestinal cancer.
The above contents refer to Baidu Encyclopedia Green Tea.