Food Science and Technology Vol. 1(1), pp. 7 - 15
DOI: 10.13189/fst.2013.010102
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Impact of Yield on Total Polyphenols, Anthocyanins, Reducing Sugars and Antioxidant Potential in White and Red Wines Produced from Montenegrin Autochthonous Grape Varieties

Tatjana Košmerl^1,*, Laura Bertalanič¹, Vesna Maraš², Vesna Kodžulović², Sanja Šućur², Helena Abramovič^1
1 Biotechnical Faculty, University of Ljubljana, 1000 Ljubljana, Slovenia
² The Company ”13. Jul Plantaže”, Department of Development, 20000 Podgorica, Montenegro

ABSTRACT

The aim of the present research is to determinate the impact of grape yield (6 t ha^-1, 8 t ha^-1, 10 t h^-1, 12 t ha^-1 and 15 t ha^-1) on the quality of wine produced from red and white grape varieties Vranac, Kratošija, Krstač, and Žižak. For that purpose the quality parameters i.e. the total polyphenols, anthocyanins, reducing sugars and antioxidant potential of wine were determined. The antioxidant activity was assessed using 2,2-diphenyl-1-picrylhydrazyl (DPPH•) test and reducing power assay. The results of correlation analysis showed that there is a poor response of quality parameters to variation in yield. For most quality parameters the maximum value was determined at yield of 8 t ha^-1. The highest total polyphenols content, concentration of anthocyanins, reducing sugars and antioxidant activity expressed red wine Vranac that practically in all studied quality parameters was followed by variety Kratošija, Žižak and Krstač.

KEYWORDS
Crop Yield, Wine, Phenolic Compounds, DPPH-Test, Reducing Power Assay, Correlation

Cite This Paper in IEEE or APA Citation Styles
(a). IEEE Format:
[1] Tatjana Košmerl , Laura Bertalanič , Vesna Maraš , Vesna Kodžulović , Sanja Šućur , Helena Abramovič , "Impact of Yield on Total Polyphenols, Anthocyanins, Reducing Sugars and Antioxidant Potential in White and Red Wines Produced from Montenegrin Autochthonous Grape Varieties," Food Science and Technology, Vol. 1, No. 1, pp. 7 - 15, 2013. DOI: 10.13189/fst.2013.010102.

(b). APA Format:
Tatjana Košmerl , Laura Bertalanič , Vesna Maraš , Vesna Kodžulović , Sanja Šućur , Helena Abramovič (2013). Impact of Yield on Total Polyphenols, Anthocyanins, Reducing Sugars and Antioxidant Potential in White and Red Wines Produced from Montenegrin Autochthonous Grape Varieties. Food Science and Technology, 1(1), 7 - 15. DOI: 10.13189/fst.2013.010102.