Holt R.R., Lazarus S.A., Sullards M.C., Zhu Q.Y., Schramm D.D., Hammerstone J.F., Fraga C.G., Schmitz H.H., Keen C.L. (2002) Procyanidin dimer B2 [epicatechin-(4beta-8)-epicatechin] in human plasma after the consumption of a flavanol-rich cocoa. Am J Clin Nutr 76:798-804 PubMed (12324293)

Compound Mean content
01 mers 12.2 mg/g
02 mers 9.7 mg/g
Procyanidins, total 28.2 mg/g