engleski

Composition and qualitative characteristics of virgin olive oils produced from northern Adriatic region of the Republic of Croatia

Istria and Island Krk are located in the Northern Adriatic region, Republic of Croatia. The majority of oils produced on the islands of this Region (Krk, Cres)correspond to extra virgin classification as a consequence of olive cultivars (Debela, Naska, Rosulja, Slatka, Plominka, Širnjača) and the most common cultivars in Istria such as Buga, Carbonera, Bianchera, Leccino, etc. The objective of this work was the characterisation of virgin olive oils during the 1997/98, 1998/99 and six months of 1999/2000 harvest. Besides the most commonly used chemical analyses (acidity, peroxide value and UV absorption, fatty acids, fatty acids in 2-position, sterol and aliphatic alcohols content, triglyceride and trilinolein content), the olive oil quality was evaluated in examined samples. The chemical analyses were supported also by the determination of polyphenol content, expressed as caffeic acid, squalene and alpha-tocopherol content.

virgin olive oil characterisation - sterol and aliphatic alcohol contents – saturated fatty acids in the 2-position of the triglyceride – trilinolein - total polyphenols and alpha-tocopherol

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