Tunisian wild olive (Olea europaea L. subsp. oleaster) oils: Sterolic and triterpenic dialcohol compounds

Two triterpenic dialcohols (erythrodiol and uvaol), were also detected besides the sterolic components. Sterol content of oils was below the upper legal limit of 4% in all nalysed samples, with a range from 1.05% to 3.40%. The statistical analyses (PCA and HCA) can explain the variability of the oil composition according to the cultivar. We note a good discrimination between varieties according to sterol and triterpenic dialcohol data. These components seem to be an effective tool to discriminate between the oleasters.