the cells only consumed 26 g/L glucose
and produced 7.6 g/L solvents containing 2.3 g/L acetone,
4.8 g/L butanol and 0.5 g/L ethanol.
The solvent productivity and yield were both at a low level of 0.12 g/(L h) and 0.29 g/g.
Most of the sugars including 20 g/L glucose and 15 g/L xylose were left in the culture medium, suggesting that culture medium with 61 g/L total sugars was not feasible during butanol production.