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Scientific Papers Series B Horticulture

Scientific Papers Series B Horticulture

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Figure 6. Evolution of total acidity for the varieties forred winesThe rate of accumulation of sugar in thevarieties for white wines was between 1.96 and3.12 g/day, with the lowest value in case ofChardonnay and the highest value for ItalianRiesling. As for the varieties for red wines, therate of accumulation of sugars was between2.13 g/day (Cabernet Sauvignon) and 1.42g/day (Mamaia) (see Table 2).Table 2. Rate of accumulation of sugarsVarietySugar (g/day)-for white winesChardonnay 1.96Columna 2.66Feteasca regala 2.22Italian Riesling 3.12Sauvignon blanc 2.53-for red winesCabernet Sauvignon 2.13Merlot 1.60Feteasca neagra 1.72Mamaia 1.42Pinot noir 1.56The rate of decrease of total acidity for thevarieties for white wines was between 0.83 and1.03 g/day, with the lowest value observed forColumna variety and the highest rate in ItalianRiesling. As regards the varieties for red wines,the highest rate of decrease in total acidity wasobserved for the variety Pinot noir (0.80 g/day)and the lowest rate of decrease was seen inCabernet Sauvignon and Mamaia (0.66 g/day,Table 3).Table 3. Rate of decrease in total acidityVarietyMetabolisation of acids (g/l/day)-for white winesChardonnay 0.84Columna 0.83Feteasca regala 0.97Riesling Italian 1.03Sauvignon blanc 0.97-for red winesCabernet Sauvignon 0.66Merlot 0.71Feteasca neagra 0.67Mamaia 0.66Pinot noir 0.80All the grape varieties registered sugarconcentrations between 195 and 234 g/l whichalows them to be used for the production ofwines with controlled denomination of origin,with the exception of the variety Feteascaregala which met the conditions for theGeographical Indication “Colinele Dobrogei”(Table 4.)Table 4. Physico-chemical characteristics of the grapes obtained in the Murfatlar viticultural center, 2012 harvestPhysico-chemical characteristicsQuality level*Table Wines with Wines with ControlledVariety Date Sugar Acidity (g/l Weight 100 wines Geographical Indication Denomination of Origin(g/l) ac. tartric) grains (g) 144.6-178.6-187.0 > 187.1178.5Varieties for white winesChardonnay 14.09.2012 216 6.12 106 xColumna 19.09.2012 195 5.05 156 xFeteasca regala 15.09.2012 187 6.43 119 xRiesling Italian 20.09.2012 228 5.20 106 xSauvignonblanc21.09.2012 219 4.28 139 xVarieties for red winesCabernetSauvignon25.09.2012 211 5.51 95 xMerlot 17.09.2012 221 6.12 109 xFeteasca neagra 13.09.2012 208 6.89 118 xMamaia 18.09.2012 209 5.66 218 xPinot noir 24.09.2012 234 5.20 133 x396

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