EGCG is the most abundant catechin in green tea and is a potent antioxidant that may have therapeutic applications in the treatment of many disorders, including cancer. The chemical composition of green tea varies with climate, season, horticultural practices, age of the leaf, and position of the leaf on the harvested shoot. The major components of interest are the polyphenols or flavonoids.These include: catechin, epicatechin, epicatechingallate, epigallocatechingallate (EGCG), and proanthocyanidins. Epigallocatechingallate is considered the most significant active compound.
The leaf bud and first leaves are richest in epigallocatechingallate. Health Ingredients Ceylon (Private) Limited uses only freshly plucked “two leaves and a bud” of Pure Ceylon Tea, for production of its EGCG.
Nutraceuticals and dietary supplements