Several authors in the recent years investigated the effects of phenolic fractions; in particular, oleuropein and its hydrolysis products, oleuropein aglycon, elenolic acid and hydroxytyrosol, have been pointed out as responsible for the inhibition of LAB
growth in olive brines (Medina, García, Romero, de Castro, & Brenes, 2009).
The expression of phenolic compounds in olive fruits is mainly driven by genetic factors. Oleuropein and hydroxytyrosol are the major phenolic compounds present in all varieties but large differences exist among olive cultivars in terms of phenolic
profile