Showing contents of acorns from Quercus ilex and Quercus suber

Espin J.C., Gonzalez-Barrio R., Cerda B., Lopez-Bote C., Rey A.I., Tomas-Barberan F.A. (2007) Iberian pig as a model to clarify obscure points in the bioavailability and metabolism of ellagitannins in humans. J Agric Food Chem 55:10476-85 pubmed (17990850)

Compound Mean content
Polyphenols, total 1189.7 mg/kg fresh weight