Fig. 6
From: CO-dependent hydrogen production by the facultative anaerobe Parageobacillus thermoglucosidasius
Gas phase composition during the cultivation of P. toebii DSM 14590T. Initial gas composition was 50% CO and 50% air. O2 (dark blue) decreased from 0.66 to ~ 0.01 mmol after 23.25 h. CO (dark red) decreased fractionally about 0.34 mmol. No hydrogen (dark grey) was detected. CO2 (dark yellow) increased during the cultivation to 0.56 mmol. After 9.12 h a maximum absorbance (OD600 in black) with a value of 0.73 was reached