Before revision: Chemical treatment Oleuropein consists of a molecule of elenolic acid linked to the orthodiphenol hydroxytyrosol by an ester bond , and to a molecule of glucose by a glycosidic bond.
After revision: Chemical treatment Oleuropein is a derivative of elenolic acid linked to the orthodiphenol hydroxytyrosol by an ester bond and to a molecule of glucose by a glycosidic bond.