Fig. 3
Influence of different NaHCO3 concentrations on growth (A) and product formation (B) of B. graminisolvens XDT-1 and B. propionicifaciens SV434. The experiment was performed in three biological replicates, with one representative shown (A). Cells were either cultured in DMMG or in a medium that was flushed with 100% N2 and contained a defined amount of NaHCO3. All cultures of B. propionicifaciens were supplemented with 0.5 g/l yeast extract to increase growth rate. HPLC-samples were taken at 48 h of incubation