... than CoQ10.Hydroxytyrosol is found in olive oil in the form of its elenolic acid ester oleuropein and, especially ... independent oxidation is also significantly retarded by hydroxytyrosol. The antioxidant activities of hydroxytyrosol, which has been proven to be ... oil (which, however, contains phenols other than hydroxytyrosol). Finally, hydroxytyrosol and related olive phenols have been tested, as ...