Acta Univ. Agric. Silvic. Mendelianae Brun. 2011, 59(5), 145-150 | DOI: 10.11118/actaun201159050145

Study of changes organic acids in red wines during malolactic fermentation

Jindřiška Kučerová1, J. Široký
1 Ústav technologie potravin, Mendelova univerzita v Brně, Zemědělská 1, 613 00 Brno, Česká republika

The aim of this contribution is to be able to describe the movement of organic acids in red wine during malolactic fermentation. Wines from Znojmo wine region were represented by varieties of Svatovavřinecké (Saint Laurent), Rulandské modré (Pinot Noir), Zweigeltrebe, Frankovka (Lemberger) and Dornfelder. The grapes went through the same way of wine making and after completion of alcoholic fermentation were inoculated with pure culture of lactic acid bacteria Oenococcus oeni. Samples were taken for chemical analysis during biodegradation of acids within the range of 2 to 4 days and they were measured using a device WineScan FT 120. Chemical analysis detected changes in the concentrations of the following parameters: total acidity, lactic, malic, tartaric and citric acids. The total content of acids statistically significantly (P = 0.05) differed only between samples of Svatovavřinecké T 66 and Zweigeltrebe T 2.
The differences of average mass concentrations of lactic, malic and citric acids were not statistically relevant. Nevertheless, statistically relevant difference in the concentration of tartaric acid from all other wines was detected in a sample of SV T 66 which also reached the highest average value (5.18 g/l).

Keywords: wine, fermentation, organic acids, Oenococcus oeni

Received: June 9, 2011; Published: March 23, 2014  Show citation

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Kučerová, J., & Široký, J. (2011). Study of changes organic acids in red wines during malolactic fermentation. Acta Universitatis Agriculturae et Silviculturae Mendelianae Brunensis, 59(5), 145-150. doi: 10.11118/actaun201159050145
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