Natural phenols and diglycerides in virgin olive oil and their relation.

This work is to be included among an evaluation of analytical methods to be used for determination of olive oil quality. Studies on the diglycerides and phenols fraction have been conducted on some olive oils, obtained from cultivars grown in Calabria, during years 1997-2000. The analysis of obtained data indicates that there is a close relation between the content of phenols and diglycerides in virgin olive oil and that high content in phenols and 1,2-diglycerides is a characteristic of fresh olive oil.