Glasnik Zaštite Bilja, Vol. 32 No. 3, 2009.
Original scientific paper
Influence of olive growing location on the quality of the varieties 'Leccino' and 'Buža' extra virgin olive oil in Istria
Đani Benčić
; Agronomski fakultet Sveučilišta u Zagrebu
Marin Krapac
; Institut za poljoprivredu i turizam Poreč
Abstract
The paper presents a one-year results of chemical analyses: free fatty acids, peroxide number, primary and secondary oxidation products (K232 and K270), total phenols, o-diphenols and clorofil of extra virgin olive oils obtained from the olive trees of ‘Leccino’ and ‘Buža’ varieties grown in the olive plantation Barbarig by the see near Pula and in the olive plantation area of Veli Mlun and Pračana around Buzet, at 250 m above the see level. The paper also presents the results of temperature analyses during the fruits’ maturity stage at both locations. “Barbariga” received higher sum of active temperatures for temperature thresholds of 7.0, 10.0, 12. 5 and 15.0 ºC. Statistically significant differences of the total phenols content for both cultivars were found out as regard to the location. Oil obtained from cv. ‘Leccino’ trees grown in “Barbariga” had higher total phenols content in comparison to the same cultivar grown at 250 m above the see level, while the same type values of the ‘Buža’ cultivar were quite the opposite as regard to the location. As the total phenols content influences significantly the quality of extra virgin olive oil (organoleptic characteristic as well as antioxidative stability) the obtained results confirm the importance of location/cultivar interaction in creating the quality of extra virgin oils of Istria.
Keywords
Istria; olive oil; cultivar; location
Hrčak ID:
163469
URI
Publication date:
15.7.2009.
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