Fig. 4

Influence of endogenous NADH-dependent L-lactate dehydrogenase Ldh on 1,2-propanediol production by recombinant C. glutamicum strains. Batch cultivations of C. glutamicum ΔhdpA(pEKEx3-mgsA-yqhD-gldA) (triangles) and ΔhdpAΔldh(pEKEx3-mgsA-yqhD-gldA) (squares) were performed, and a optical density at 600 nm (solid symbols) and glucose concentration (open symbols) and b 1,2-propanediol (solid symbols) and acetol (open symbols) concentrations are shown. Means and standard errors of three independent cultivations are shown