and results were
further analyzed by IBM SPSS Conjoint program. Fermentation
experiments were run for six days, and samples were withdrawn
twice a day (Supplementary file 1). Data from the 72 h sample were
chosen for conjoint analysis. This choice was based on three considerations:
i) according to previous results (Morales et al., 2015),
three days was considered as a suitable oxygenation interval in
order to reach the desired ethanol content reduction (indeed the
average alcohol level reduction by 72 h was 2.1% ABV); ii) in most
fermentation experiments sugar consumption was sufficient after
72 h in order to calculate metabolic yields with acceptable precision;
iii) none of the fermentation experiments was stuck at this
time point. Values for the main metabolic parameters at th