Meng X., Lee M.J., Li C., Sheng S., Zhu N., Sang S., Ho C.T., Yang C.S. (2001) Formation and identification of 4'-O-methyl-(-)-epigallocatechin in humans. Drug Metab Dispos 29:789-93 PubMed (11353745)

Compound Mean content
(-)-Epigallocatechin 3-O-gallate 88 mg/g dry weight
(-)-Epigallocatechin 82 mg/g dry weight
(-)-Epicatechin 32 mg/g dry weight
(-)-Epicatechin 3-O-gallate 33 mg/g dry weight