Phenolic Potential of Olive Leaves from Different Istrian Cultivars in Croatia

For the first time effects of different sampling periods and their interaction with five major autochthonous Croatian Istrian olive cultivars Italian cultivar ‘Leccino’ on quantity composition leaf phenolic compounds mineral nutrients were investigated. that purpose, leaves sampled in two collecting periods, October March, coinciding harvesting pruning respectively. All selected had a higher oleuropein content period, highest levels noted for ‘Buža’ cultivars. Cultivar significantly affected almost all investigated phenols, concentrations these valuable than period. Differences observed closely related to differences profiles by genotype. Some studied nutrients, such as P, Cu B, found be correlated most abundant compounds, verbascoside.