Fig. 3

Ethanol productivities (g ethanol /g glucose equivalent of initial glucan/day) and percent of theoretical ethanol yields produced by S. cerevisiae (D5A) at 37 °C and K. marxianus (CBS 6556) at 37 and 43 °C when used for SSF of a 11, b 15, and c 18 wt% glucan loadings of poplar solids pretreated by CELF pretreatment. The SSF enzyme dose was 15 mg protein per g glucan for all cases. All the experiments were conducted in a shake flask with a 25 mL working volume, in duplicates. Error bars indicated in the figure are standard deviation error bars among the duplicates