It had already emerged from experimental studies and has now been confirmed by a study of Japanese Keiji Matsumoto University of Shizuoka in Japan, that some active ingredients in Green Tea and in Pu-Erh Tea, specifically catechins and teanine, protect from the flu.
From what does this protective effect? Probably by a two-fold effect. The Green Tea catechins bind to a viral antigen, hemagglutinin needed by the virus to attack human cells, thus making it inactive. The theanine appears instead that enhance the immune response. More specifically Green Tea has a good antiviral useful for the prevention of influenza (its strong ability to counter the H1N1 virus was documented), as well as a stimulating the immune system.
Recall that the Green Tea and also the Pu-Erh Tea are the most important antioxidants we have in nature, thanks to the presence of carotenoids, chlorophyll, polysaccharides, vitamins C and E, manganese, potassium and zinc.
The major health benefits, however, are related to the presence of polyphenols. The latter are composed of 6 kinds of catechins and their derivatives (gallates), of which the EGCG (EpiGalloCatechinGallato, a hundred times more effective than vitamin C against free radicals), quantitatively the most important, it is also considered the most active ingredient for powerful anti-oxidants, these substances are also found in some types of vegetables, fruit, chocolate and red wine. All types of Tea contain them, but the Green Tea not undergoing fermentation process preserves the antioxidant properties of these polyphenols and Pu-Erh Tea while undergoing a particular fermentation acquires the unique enzymes that are of great help to fight against viruses and help against the states of constipation classics of flu.
During influenza it is recommended to drink at least 4-6 cups of Green Tea and Pu-Erh alternated daily to help our body fight the virus.
The same can be done for prevention, whether in our bodies we already present these polyphenols / catechins the influenza virus will have more difficulties to attack, guaranteeing us a natural barrier against the virus. In this case we recommend our Mao Feng Green Tea, very delicate, never tannic easy to drink and rich in antioxidants and our Pu-Erh, completely natural and pleasantly tasty.