(Air,■), 3.32 ±0.12%(●), 8.86 ± 0.24%(Δ), and 13.84 ± 0.27%( ) in 5L parallel fermenters

Figure 3: Influence of CO2 content in the inlet gas stream on extracellular organic acids. Symbols: the inlet CO2 concentrations were controlled at 0.03%.