engleski

Influence of variety and vineyard on antioxidant acitivity, polyphenols and anthocyanins content in red wines

Anthocyanins play a crucial role in the color of red wine ; however they contribute little to the taste of wine. Anthocyanins developed in the leaves of photosynthetic plants as protection from the photo-damage of UV and blue-green light. These pigment molecules are effectively sunprotectors for grapes. In addition to their primary function, they also act as anti-oxidants, protecting free radical oxidation. This paper deals with an influence of vineyard and variety on antioxidant activity, flavonoids, polyphenol and antocyanin content in red wines. The samples of red wines were produced in vineyards of continental Croatia (Merlot, Frankovka, Pinot noir, Cabernet Sauvignon and Zweigelt) and coastal Croatia (Plavac mali, Teran, Merlot and Babić). It was found that vatiety and vineyard position and climatic conditions were affected on antioxidant activity, flavonoids, polyphenol and antocyanin content in red wines. The results of analysed wines showed that coastal Croatian wines had a greater amount of polyphenol and flavonoids than continental Croatian wines. there was no significant difference between antioxidant activity between continental and coastal Croatian wines. The wine of coastal Croatia vineyards, variety Teran had the highest content of anthocyanins compared to all examined wines.

red wine, anthocyanins, polyphenols, flavonoids, antioxidant activity

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