Stilbene levels and antioxidant activity of Vranec and Merlot wines from Macedonia: effect of variety and enological practices

Kostadinovik, Sanja and Wilkens, Andrea and Stefova, Marina and Ivanova, Violeta and Vojnoski, Borimir and Mirhosseini, Hamed and Winterhalter, Peter (2012) Stilbene levels and antioxidant activity of Vranec and Merlot wines from Macedonia: effect of variety and enological practices. Food Chemistry, 135. pp. 3003-3009. ISSN 0308-8146

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Abstract

The content of the stilbenes trans-resveratrol and piceid as well as the antioxidant activity of Macedonian red wines from the two main grape varieties Vranec and Merlot have been evaluated. The effects of time of maceration, type of yeast and the level of sulphur dioxide applied on stilbene content and antioxidant activity have been studied. The most important factor in winemaking technology is the maceration time since the highest concentrations of trans-resveratrol, piceid and highest antioxidant activity were found following 6 and 10 days of maceration. Concerning the yeast type, higher concentrations of trans-resveratrol and piceid have been obtained with French yeast ‘‘Levuline CHP’’ in comparison to Macedonian yeast ‘‘Vinalco’’. In contrast, the higher antioxidant activity of wines from both varieties of grapes was observed by application of Macedonian yeast ‘‘Vinalco’’.

Item Type: Article
Subjects: Agricultural Sciences > Agricultural biotechnology
Natural sciences > Chemical sciences
Divisions: Faculty of Agriculture
Depositing User: Violeta Ivanova Petropulos
Date Deposited: 18 Dec 2012 07:31
Last Modified: 28 Oct 2013 12:33
URI: http://eprints.ugd.edu.mk/id/eprint/3897

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