Fig. 2

SA production and sugar consumption by A. succinogenes in pure xylose and glucose in batch fermentations. Profiles of sugar utilization (a, d), succinate production (a, e), and succinate productivity (c, f) as a function of different initial concentrations of xylose (a, b, c) and glucose (d, e, f). Productivity is calculated as succinate concentration divided by the fermentation time at each point. The numbers in c and f indicate the time point where the maximum cell density (OD₆₀₀) was reached and the specific OD₆₀₀ value for each culture