... ,consisting of many sorts of ester-catechin.Several of the most active monomers are EGCG (Epigallocatechin gallate)GCGGallocatechin gallate ... as follows:(1)In medicine, applied to enhancing the human immubili and the treatments of leukemia, skin cancer, stomach cancer, ... esophageal cancer and other tumor diseases;(2)In the food industry ,used as antioxidants, preservatives, removing foul agents ...