Figure 4

pH (A) and lactate (B) profiles along anaerobic plug flow compartment. Two-compartment scale-down cultivation of C. glutamicum for batch and feed phase; oscillation of oxygen supply (t < 0 h, batch) and oscillation of oxygen and substrate supply (t > 0 h, fed-batch) with τ = 87 s (TCR2), pH (A) and extracellular lactate concentration (B) indicated for individual port positions (P-[0–5]) as assigned in Figure 1.