... metals and phenol nature of the protein precipitation,so it is a kind of phenols. Catechins also ... body's elimination of lipid peroxide free radicals, so have a strong anti-aging effect to human.The ... foul-smelling bacteria to remove methl mercaptan odor,so it can remove the smoker`s bad breath. ... can prevent the damage that caused by free radicals, so it has anti-oxidation, anti-bacterial, anti-tumor, ...