Three non-Saccharomyces yeast strains, belonging to three different yeast species were selected according to results from a
previous work (Quiros et al., 2014 ) in order to explore the potential
of different yeast species to contribute to ethanol content reduction
by respiration during the transformation of grape must into wine.
S. cerevisiae EC1118 was also included in the study for comparison.
We addressed the impact on yeast metabolism of three easily
manageable factors, fermentation temperature, nitrogen nutrient
availability (YAN), and aeration regime. Nine combinations of these
three factors at three different levels were assayed for each strain,
as stablished in an orthogonal design (Table 1),