Additional file 6: of Identification of enhanced hydrogen and ethanol Escherichia coli producer strains in a glycerol-based medium by screening in single-knock out mutant collections

Figure S3. Scatter plots of mean and SD of specific hydrogen production, YH2/X (A); specific ethanol production, YE/X (B); and specific glycerol consumption, YG/X (C) of wild type strain with culture medium at pH 6.25 (filled inverted triangle) and pH 7.5 (open circle)