Figure 1

C. thermocellum growth, cellobiose consumption and ethanol production in the absence or presence of 3.95 g/L (or 0.5% [v/v]) ethanol. Arrow indicates when ethanol was added to the treatment fermentors. Samples were collected at time zero and 2, 12, 30, 60, 120, 240 min after ethanol supplementation. Final time point for control fermentors is 36 h and 33 h for treatment fermentors.