Visioli F., Caruso D., Plasmati E., Patelli R., Mulinacci N., Romani A., Galli G., Galli C. (2001) Hydroxytyrosol, as a component of olive mill waste water, is dose- dependently absorbed and increases the antioxidant capacity of rat plasma. Free Radic Res 34:301-5 PubMed (11264904)

Compound Mean content
Hydroxytyrosol 41.4 µg/mg/kg fresh weight