Figure 2

Fermentation products of C. thermocellum . The wild-type, ∆hydG, and ∆hydG∆ech strains grown on minimal medium with 5 g/L cellobiose. Red bar, ethanol; black bar, acetate; gray bar, lactate; white bar, formate; diagonal line bar, total amino acids; blue bar, H₂. H₂ concentration is reported as mmol gaseous H₂ per L liquid medium to facilitate comparison to soluble products. Error bars represent one standard deviation.