Caratteristiche compositive della frazione lipidica di due cultivar di olivo dell'isola di Cherso (Croazia)in funzione della maturazione

The characteristics of the oil from two cultivar cultivated in the Cres island (Croatia) are described in this paper.The considered composition parameters are the ones related to the lipid fraction extracted in laboratory, The interest about this cultivar, named SimJaza and Plominka is moving in consideration of their possible diffusion in other areas with similar climate charateristics. Sampling was carried out at different ripening eves: anincrese in oil content was observed at late harvesting of drupes, without any effect on other parameters as peroxide value and free acidity that remains low. On the other hand, oleic acid content is increasing as ripening goes on in Simjaza cv, while a reverse behaviour was observed in Plominka; palmitic acid reaches high amount in the latter case.Total sterol content is lower in late harvested samples, as aliphatic alchols, too, even if with a quite different rate of deccreasing.