The health benefits of olive oil are well-documented, and it is widely believed that phenolic compounds found in olive oil contribute to some of these benefits.
The types and concentrations of phenolic compounds vary significantly in plant tissues. Oleuropein is the most prominent phenolic compound in olives. The oleuropein molecule comprises three parts: a polyphenol, named 4-(2-hydroxyethyl)phenol-1,2-diol (also known as hydroxytyrosol or HT), an elenolic acid (a type of secoiridoid), and a glucose mol