(Fig. 2).
The major phenolic compounds in olives are oleuropein, hydroxytyrosol
and tyrosol. During table olive processing either of the black
Kalamata olives or green olives Chalkidikis (without alkaline treatment)
a sharp decrease in oleuropein and at the same time a substantial increase
in hydroxytyrosol and tyrosol content was observed (Table 2).
In fact the processing of the raw olives changes the profile of phenolic
compounds quite markedly, affecting the organoleptic properties and
the antioxidant capacity of the end product. Oleuropein and β-
glucosidase have been developed as a set to provide a chemical defense