3. Results
3.1. Micro-fermentation assay
In micro-fermentation assays the four yeast strains displayed different fermenting behaviors (expressed as CO2 loss (g) in 100 mL) compared to the commercial S. cerevisiae strain EC-1118. The antagonistic strains C. intermedia 253 and L. thermotolerans 751 revealed a very low fermentation activity that was limited to the first 5 days of incubation, while strains C. jadinii 273 and C. friedrichii 778 had no fermentation activity ( Fig. 1).