Effect of climate of the growth of the olives fruit on the pigments of the Irainian extra virgin olive oils

In the present study،sampling was carried out using 7 extra virgin olive oils from Gillan، Zanjan، Ghazvin، Golestan،Fars and Kermanshah Province. The amounts of the chlorophylls and carotenoidswere determined for each sample using diol-phase cartridges and the extract was analysed by reverse-phase HPLC. Pheophytina (29/29%) show the highest content of all pigments in Iranian extra virgin olive oils and pyropheophytin (0/14%) show the lowest concentrations. Lutein (51/48%) show the highest content of all carotenoids pigments followed by violaxanthin in Iranian olive oils and betacaroten (0/76%) and anthraanthin show the lowest concentrations. Pheophyting a shows the highest content of all pigments followed by chlorophyll a in Iranian olive oils and pheophytina andpyropheophytin show the lowest concentrations. The correlation between amount of pigments and three environment factors; temperature، raining fall and height were investigated. Statistical studies showedthere is a direct relationship between pyropheophytin content and the hight of sampeling local with a 95% confidence limit. An increase in hight resulted in decrease pigments. And also there is a positive correlation at 95% confidence level between lutein and raining of sampeling local. When raing of sampling local increases، lutein has been increasing as well. Statistical studies showed no correlation between temperature and amount of pigmens in the olive oils.