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Table 1 Fermentation data in continuous cultivations of C.saccharolyticus on glucose (5g.L-1) at steady states of different dilution rates, with and without N2 sparging.

From: Reassessment of hydrogen tolerance in Caldicellulosiruptor saccharolyticus

Parameter Results obtained with and without N2 sparging at D(h-1) of:
  0.05
(100 mL/min N2)
0.15
(100 mL/min N2)
0.05
no stripping
Biomass conc. (g/L) 0.51 ± 0.02 0.61 ± 0.05 0.42 ± 0.01
Residual glucose conc. (mM) 0.05 ± 0.03 3 ± 2 0.3 ± 0.3
q glucose (mmol/g/h) 2.90 ± 0.09 6.2 ± 0.4 3.2 ± 0.4
q pyruvate (mmol/g/h) 4.90 ± 0.19 9.55 ± 0.03 5.8 ± 0.7
q H2 (mmol/g/h) 10. 1 ± 0.4 18.0 ± 0.0 5.9 ± 0.6
Product yield (mol/mol)    
H2 3.48 ± 0.09 2.9 ± 0.2 1.82 ± 0.03
Acetate 1.61 ± 0.03 1.32 ± 0.13 0.83 ± 0.02
Lactate 0.01 ± 0.00 0.01 ± 0.01 0.67 ± 0.01
Ethanol 0.07 ± 0.00 0.20 ± 0.03 0.28 ± 0.04
Biomass (g/mol) 17.3 ± 0.5 24.1 ± 1.5 16 ± 2
YATP (g cells/mol ATP) 5.4 ± 0.2 9.1 ± 0.3 6.7 ± 0.6
Carbon recovery (%) 0.96 ± 0.01 0.93 ± 0.04 0.93 ± 0.02
Redox recovery (%) 0.98 ± 0.01 0.93 ± 0.03 0.97 ± 0.02