Results obtained with vanillin are shown in Figure 4
and in Table 1. Figure 4 indicates that vanillin did not
severely inhibit the growth of G. xylinus until the concentration
exceeded 2.5 mM (Figure 4A-C). An initial vanillin
concentration of 0.5 mM hardly affected glucose consumption,
pH value or BC yield (Figure 4 and Table 1).
With an initial vanillin concentration of 2.5 mM, the
glucose consumption rate declined from 3.5 g/(L∙d) to
1.7 g/(L∙d) (Table 1A).