The market penetration rate of hydroxytyrosol is low and its application areas need to be expanded.

hydroxytyrosol mainly exists in the form of the esterified product oleuropein in olive fruits, leaves and olive oil processing wastewater. in particular, the content of oleuropein and hydroxytyrosol in olive leaves is significantly higher than that in fruits and bark. dried olive leaves account for about 6% to 9% (mass ratio). as a typical phenolic…