Chemical composition of Smederevka and Vranec wines

Ilievski, Ile and Ivanova, Violeta (2024) Chemical composition of Smederevka and Vranec wines. Book of Proceedings from the Second International Scientific Conference GIRR 2024. pp. 13-21.

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Abstract

In this study, white Smederevka wine and red Vranec wine (vintage 2021) were produced from grapes grown at Ovce Pole wine district, Republic of N. Macedonia. Production of wines have been performed in a large-scale winery. In order to determine the quality of wines, following principal chemical parameters have been determined: alcohol, specific gravity, dry extract, total and volatile acidity, SO2 (free and total), reducing sugars and pH. In addition, citric acid and toxic elements such as Cd, Cu, Fe and Pb have been analyzed in the wines. Wines presented satisfactory quality, containing alcohol content of 11 % and 11.61 % in Smederevka and Vranec, respectively. Total acidity was relatively high to ensure chemical and microbiological stability of wines, while volatile acidity was low in both wines influencing good balance and sensory quality. The wine stability was confirmed by pH (3.19 in Smederevka and 3.45 in Vranec). Citric acid is another mandatory parameter that should be determined according to regulations in order to ensure wine quality. Smederevka and Vranec wines contained low concentration of citric acid (32 mg/L in Smederevka wine and 122 mg/L in Vranec wine), meaning that citric acid was not added to the wines. Both wines were dry wines, with reducing sugar content lower than 4 g/L and they were well protected from oxidation with appropriate concentration of added SO2. In addition, Smederevka and Vranec wines presented very low levels of the toxic and harmful elements Cd, Cu, Fe and Pb, lower than maximal allowed concentrations according to the safety regulations, which confirmed that the wines were safe for consumption with satisfactory chemical quality and stability.

Item Type:	Article
Subjects:	Natural sciences > Chemical sciences Agricultural Sciences > Other agricultural sciences
Divisions:	Faculty of Agriculture
Depositing User:	Violeta Ivanova Petropulos
Date Deposited:	13 Jun 2024 08:59
Last Modified:	13 Jun 2024 08:59
URI:	https://eprints.ugd.edu.mk/id/eprint/34281

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