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Table 2 Culture profiles of Clostridium sp. AWRP in the PETC medium with various gas/liquid ratios

From: Domestication of the novel alcohologenic acetogen Clostridium sp. AWRP: from isolation to characterization for syngas fermentation

Parameters Gas-to-liquid ratio (relative)
3.0 (1) 6.9 (2.34) 14.8 (5.02)
Gasa (mM)
 CO consumed 157 ± 1 368 ± 2 778 ± 7
 H2 consumed 29 ± 2 15 ± 5 7 ± 3
 CO2 produced 52 ± 2 186 ± 11 434 ± 3
Metabolite (mM)
 Acetate 28 ± 2 40 ± 4 14 ± 2
 Ethanol 8 ± 1 24 ± 2 94 ± 0
 2,3-Butanediol NDb 2 ± 0 6 ± 1
C-recoveryc (%) 79 ± 1 87 ± 2 87 ± 0
  1. aNormalized to the culture volume by: Δ(Headspace gas concentration) × (headspace volume)/(culture volume)
  2. bNot detected
  3. cCarbon recovery; cell mass was not included