Fig. 1

Fermentation performance of the recombinants Z. mobilis ZM4(pHW20a-ZMO1771) and ZM4(pHW20a-gfp) in corn stover hydrolysate. ZM4(pHW20a-ZMO1771), expressing gene ZMO1771 fused with the reporter gene gfp; ZM4(pHW20a-gfp), expressing the reporter gene gfp only. a Cell growth indicated by the OD value at 600 nm. b Conversion of furan inhibitors. c Glucose consumption and ethanol production. Conditions: 30 °C, static culture. The corn stover hydrolysate was prepared using the freshly dry dilute acid pretreated corn stover materials. The hydrolysate contained 56.74 g/L of glucose, 24.80 g/L of xylose, 2.85 g/L of acetic acid, 0.34 g/L of HMF, and 0.62 g/L of furfural. Mean values were presented with error bars representing at least two standard deviations