Baba S., Osakabe N., Natsume M., Muto Y., Takizawa T., Terao J. (2001) Absorption and urinary excretion of (-)-epicatechin after administration of different levels of cocoa powder or (-)-epicatechin in rats. J Agric Food Chem 49:6050-6 PubMed (25829765)

Compound Mean content
Polyphenols, total 7.62 g/100 g fresh weight
(-)-Epicatechin 678 mg/100 g fresh weight
(+)-Catechin 199 mg/100 g fresh weight
Procyanidin dimer B2 262 mg/100 g fresh weight
Procyanidin trimer C1 177 mg/100 g fresh weight
Cinnamtannin A2 286 mg/100 g fresh weight