Fig. 2.

Time courses of dissolved O₂ concentrations in different cultures. Filled square C. acetobutylicum TSH1, filled circle C. acetobutylicum TSH1+ B. cereus TSH2/0 h (adding B. cereus TSH2 at the beginning), filled triangle C. acetobutylicum TSH1+ B. cereus TSH2/1 h (adding B. cereus TSH2 at 1 h). The experiment was performed in 5 L bioreactor at 37 °C, the seed of C. acetobutylicum TSH1 was from a culture of P₂ medium under 37 °C for 48 h, the seed of B. cereus TSH2 was from a culture of LB medium under 37 °C for 24 h