Figure 2

Comparisons of ethanol production and residual sugar between three different kinds of Z. mobilis strains. 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 230 g/L glucose as carbon source under anaerobic conditions at 32°C. All strains were tested by three parallel experiments. After 60 hours fermentation, the highest ethanol concentration of HYM and HYMX was 87.1 g/L, 98.7 g/L, respectively, while the original strain CP4 was 78.4 g/L.