... The Extracts of Green Tea Main functionsCatechin is a unique important bio-active component of tea,consisting of many sorts of ester-catechin.Several of the ... GCG,have a fine ability of supplying hydrogen,are new efficient natural antioxidants which can effectively remove the free ... :(1)In medicine, applied to enhancing the human immubili and the treatments of leukemia, skin cancer, stomach cancer, ...