Investigation of Biophenolic Compounds Diversity of Four Olive Fruit Cultivars in Different Regions of the Lorestan Province

Different habitats with various climatic conditions have different effects on the growth and secondary Metabolites in plants. Knowledge of the chemical compounds in plants in different regions helps to study the effect of climatic conditions on these chemicals. In this study, biophenolic compounds of four olive cultivars were identified through the high performance liquid chromatography (HPLC). The results showed that different cultivars of olives in various regions were significantly different in terms of the compositions of biophenolic compounds. Among the olive cultivars and regions, the highest coefficient of variation (45.08 and 45.03 percent) was obtained for Dialdehyde-Oleuropein aglycon and Apigenin-7-glucoside, respectively. Mean comparisons showed that Oleuropein compound in all three regions had the highest quantity. Interaction between the region and the cultivar showed that Sevillana cultivar in Kouhdasht and Khorram-Abad regions and then the Manzanilla in Veysian region had a higher quantity for Oleuropein, Apigenin-7-glucoside, Luteolin-7-glucoside and Verbascoside compounds than other the cultivars in different regions. Cluster analysis of biophenolic compounds distinguished the two groups in -19.79 distances. Distribution diagram of cultivars in different regions using the first and second components showed that the distribution of samples based on two main components were consistent with cluster analysis, as samples of Sevillana cultivar in Kouhdasht region, Sevillana cultivar in Khorram-Abad region and Manzanilla cultivar in Veysian region were at a distinct group with the highest quantity of the biophenolic compounds.