Figure 6. Effects of ionic liquids on biodiesel production by an engineered E. coli strain.

The strain was fed either 2% glucose or a CTec2 hydrolysate of IL- pretreated switchgrass containing 0–1% (w/v) [C2mim][OAc] [(A). The percentage of glucose remaining after fermentation was measured (B). Glucose levels were adjusted to 2% for all hydrolysates and controls. The CTec2 control contained equivalent amounts of purified glucose and xylose as the hydrolysate. No xylose was consumed during the fermentation (data not shown). Error bars indicate the standard deviation of triplicate experiments.