Polyphenolic and volatile profile of Macedonian wines and by-products - Kostadinovik Velickovska, Sanja
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This study evaluates the polyphenolic and volatile profile of wines and by-products from Macedonia produced under different vinification procedures. The first goal of this study was the isolation of anthocyanins from grape pomace of three red varieties (Vranec, Merlot and Pinot Noir) by application of countercurrent chromatography. The major anthocyanin was malvidin-3-glucoside and also delphinidin-3-glucoside, cyanidin-3-glucoside, petunidin-3-glucoside, peonidin-3-glucoside and malvidin-3-p-coumaroyl-glucoside were isolated. The color activity concept was applied and visual detection…mehr

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Produktbeschreibung
This study evaluates the polyphenolic and volatile profile of wines and by-products from Macedonia produced under different vinification procedures. The first goal of this study was the isolation of anthocyanins from grape pomace of three red varieties (Vranec, Merlot and Pinot Noir) by application of countercurrent chromatography. The major anthocyanin was malvidin-3-glucoside and also delphinidin-3-glucoside, cyanidin-3-glucoside, petunidin-3-glucoside, peonidin-3-glucoside and malvidin-3-p-coumaroyl-glucoside were isolated. The color activity concept was applied and visual detection thresholds of isolated anthocyanins were determined. The content of trans-resveratrol and its glucoside piceid, resulting antioxidant activity and the relationship between their levels and winemaking technology has been studied in Macedonian red wines from the two main grape varieties Vranec and Merlot. Finally, the liberation of glycosidically bound volatile compounds from white and red wines was performed by using the enzyme mixture AR 2000 and the obtained volatile profile was compared with that of the wines in which the enzyme Ednozym Aromatic during vinification was applied.
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Autorenporträt
Assistir. A Prof. Dra. Sanja Kostadinovik Velickovska obteve o seu doutoramento no Instituto de Química Alimentar da Universidade Técnica de Braunschweig, em 2012. O Prof. Dr. Ljupcho Mihajlov é professor catedrático e especialista em agricultura biológica. Os autores trabalham na Faculdade de Agricultura da Universidade "Goce Delcev", Stip, Macedónia.