and (4) nothing is known regarding how C. curvatus behaves in the sorghum sugar mixture, we first tested the growth of this yeast on different concentrations of total sugars lower than 35 g/L. As indi- cated by Fig. 2, no significant sugar inhibition was observed among the concentrations tested. The two lower doses of 11.7 and 17.4 g/L led to the same biomass DW by 48 h. After that time, cells in the cultures with the lowest sugar concentration of 11. 7 g/L stopped growing owing to depletion of sugars as demonstrated by Fig. 3a. For the cultures with 17.4 g/L of total sugars, cell growth continued after 48 h since sucrose was still available (Fig. 3b). With regard to cells in cultures with the two higher sugar doses, no differ- ence within 72 h could be detected. For these two cultures, glucose and fructose were consumed by 48 and 72 h, respectively while sucrose was still present (Fig. 3c and d). The highest biomass DW was 12.7 g/L at 72 h.