Del Rio D., Calani L., Scazzina F., Jechiu L., Cordero C., Brighenti F. (2009) Bioavailability of catechins from ready-to-drink tea. Nutrition 26:528-33 PubMed (20080030)

Compound Mean content
(-)-Epigallocatechin 45.8 µmol/L
(-)-Epigallocatechin 3-O-gallate 51.4 µmol/L
(+)-Epicatechin 28.2 µmol/L
(-)-Epicatechin 3-O-gallate 49.6 µmol/L
Flavanols, total 174.8 µmol/L
Gallic acid 118.8 µmol/L