Original scientific paper

Free resveratrol monomers in varietal red and white wines from Dalmatia (Croatia

Višnja Katalinić ; Faculty of Chemistry and Technology, University of Split, Split, Croatia
Ivica Ljubenkov ; 2SMS-Nutrition Development Center, Split, Croatia
Ivan Pezo ; 3Institute of Adriatic Crops and Carst Reclamation, Split, Croatia
Ivana Generalić ; Faculty of Chemistry and Technology, University of Split, Split, Croatia
Olivera Stričević ; Faculty of Chemistry and Technology, University of Split, Split, Croatia
Mladen Miloš ; Kemijsko-tehnološki fakultet, Split, Hrvatska
Darko Modun ; School of Medicine, University of Split, Split, Croatia
Mladen Boban ; School of Medicine, University of Split, Split, Croatia

Abstract

Introduction: Resveratrol is considered to be one of the major antioxidant constituents in red wine. In this article we investigated the presence of, and relation between trans- and cis-resveratrol monomers in the most characteristic varietal wines from Dalmatia (Croatia), produced according to the Croatian appellation of origin system.

Materials and Methods: The wines of red grape varieties (Plavac mali, Merlot,Cabernet sauvignon, Babić, Plavina, Trnjak, Vranac and Lasin) and white grape varieties (Cetinka, Pošip, Maraština, Debit, Kujundžuša, Malvasija Dubrovačka, Vugava, Medna and Zlatarica), vintage 2004, were analyzed in June 2005. Standard methods of analysis for general wine components were used for preliminary control of the selected wines. Resveratrol monomers in wine were measured by HPLC.

Results: Significant differences were found in the phenolic composition even between thewines produced from same grape varieties, but originating from different localities. Mean concentration of free resveratrol monomers was 0.43 mg/L (range 0.11–1.04) in white wines, and 2.98 mg/L (range 0.5–8.57) in red wines. The average relative amount of cis-resveratrol in white wines was almost 2-fold higher in comparison with red wines. A significant impact of grape variety on resveratrol content in wine was confirmed. Except in wine Merlot, high concentrations of free resveratrol monomers were found in red wines produced from autochthonous grape variety Plavac mali. Among white wines, the highest concentrations were detected in wine Zlatarica.

Conclusion: According to the obtained results, some red wines from the region of Dalmatia could be a good dietary source of resveratrol.

Keywords

Hrčak ID:

29216

URI

https://hrcak.srce.hr/29216

Publication date:

29.2.2008.

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