The same fermentation patterns by the three commercial wine
S. cerevisiaeyeast strains Viniferm Revelación, Viniferm SV and
Viniferm PDM were observed for pH, titratable acidity, density,
sugar consumption, and ethanol and glycerol production. Glucose
was exhausted while fructose residues remained at the end of alcoholic fermentation. A high ethanol concentration (10.91 ± 0.27%
v/v) in combination with 1.49 g/L glycerol was achieved after
14 days of fermentation. Citric acid concentration increased a
31.7% during the 9 first days, remaining almost constant until the
end of winemaking process (day 32); on the contrary, malic acid
disappeared as result of malolactic fermentation. The lactic acid
levels reached values between 0.40 and 0.96 g/L. The analysis of
CIEa parameter and total anthocyanin content in pomegranate
wines highlights a lower degradation of monomeric anthocyanins
during winemaking with Viniferm PDM yeast. This type of wine
retains a 34.5% of total anthocyanin content of pomegranate juice
blend. Results suggest that it may be possible to produce pomegranate wines with improved characteristics by selecting the fermentative yeast strain. S. cerevisiae var. bayanus [Prise de Mousse
(PDM) strain] is cryophilic yeast capable of fermenting under conditions of nutrient deficiency that produces low quantities of aromatic compounds and respects the substrate typicity. Therefore,
the combination of selected yeast strain and a lower temperature
of fermentation (