Figure 6

Comparisons of ethanol production between three kinds of Z. mobilis strains at different fermentation temperature. Cultures were grown in RM medium (10 g/L yeast extract, 1 g/L KH₂PO₄, 1 g/L Carbamide, 0.5 g/L MgSO₄.6H₂O) with 170 g/L glucose and 60 g/L xylose as carbon source at 32°C or 42°C. All strains were tested by three parallel experiments. When the temperature was up to 42°C from 32°C, after 60 hours anaerobic fermentation, the average ethanol production of CP4, HYM and HYMX was reduced by 47%, 28% and 31%, respectively. However, the ethanol production of HYMX3 was still the highest.