Tea is the second most widely consumed after water, and it is classified into many types as green tea and black tea. Green tea can obtain from two methods. Firstly, according to traditional Japanese method, green tea can obtain by steaming the tea leaves. Secondly, Chinese green tea is prepared by frying in a pan without oil.
Green tea is mainly grown in Chinese where their people can live without food, but can’t live without tea, and Japan which its major tea-growing regions are Kagoshima, and Mie. Shizuoka, between Mt. Fuji and the Pacific Coast. Green tea is widely used in Asia. Origin
Active metabolites of green tea:
Green tea has 30% of catechins, which is abundant proportion, in the dry leaves (Graham, 1992). The major catechins are epigallocatechin -3- gallate (EGCG) WHICH can change the shape amyloid protins , so it cannot kill brain cells by conducting with it, epigallocatechin (EGC), epicatechin (EC) and epicatechin -3- gallate (ECG) . moreover there are the flavonols (quercetin, kaempferol and rutin), caffeine, phenolic acids, theanine and flavor compounds (Graham, 1992).
Pharmacological Benefits of green tea:
Green tea has many health benefits and has many substances and active constituents that can prevent diseases. Moreover it helps in improving health and here some of these benefits:
1. Weight Loss. Green tea increases the metabolism. The polyphenol found in green tea works on increasing oxidation of fats and level of turning food into calories by our body.. 2. Diabetes. Green tea helps in organizing the natural level of sugar in our body. 3. Esophageal Cancer. It can reduce the risk of esophageal cancer, and kill cancer without damaging the tissue. 4. Green tea aids in developing better memory
5. Alzheimer’s and Parkinson’s. : by protecting brain cell and compensate damaging cells.. 6. Blood Pressure. Regular consumption of green tea the risk of high blood pressure....