2. Hydroxytyrosol (HTyr) HTyr is the main phenol present in EVOO. It is a small, catecholic compound exhibiting antioxidant, cardioprotective, anticancer, neuroprotective and anti-inflammatory activities [42,43,44,45,46,47]. Because of these interesting properties, it has a high therapeutic potential and is used as a supplement and preservative for cosmeceutical, nutraceutical and food applications. Despite the biological relevance of HTyr, its biosynthesis is still not fully clear.
