Grun C.H., van Dorsten F.A., Jacobs D.M., Le Belleguic M., van Velzen E.J., Bingham M.O., Janssen H.G., van Duynhoven J.P. (2008) GC-MS methods for metabolic profiling of microbial fermentation products of dietary polyphenols in human and in vitro intervention studies. J Chromatogr B Analyt Technol Biomed Life Sci 871:212-9 PubMed (18502705)

Compound Mean content
Polyphenols, total 800 mg/capsule