Fig. 3

Culture profile of the second generation producer MA-2, using 10 mM catechol for production (a), and of the first generation producer MA-1, using 10 mM catechol for production plus 2 mM benzoic acid for induction of catA expression (b). In addition, glucose was added as growth substrate. The data represent the culture profiles until the depletion of the aromatic. The full culture profiles are given in the supplement (Additional file 1: Figure S7). The concentration of glucose was corrected to represent the amount consumed during this phase. The data comprise mean values and deviations from three biological replicates