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Table 1 Fermentation product profile of C. thermocellum strains in absence/presence of added acetate to minimal medium

From: Improved growth rate in Clostridium thermocellum hydrogenase mutant via perturbed sulfur metabolism

  Wild type ΔhydG ΔhydGΔech
No acetatec Added acetate No acetatec Added acetate No acetatec Added acetate
Ethanola 19.63 ± 2.98 22.88 ± 1.82 30.94 ± 1.61 31.43 ± 0.6 35.84 ± 1.0 36.06 ± 1.62
Acetateb 9.50 ± 1.9 8.90 ± 1.50 2.56 ± 0.07 1.10 ± 0.6 3.46 ± 0.36 1.76 ± 0.90
Lactate 3.84 ± 1.03 3.52 ± 1.56 0.11 ± 0.15 0.07 ± 0.2 0.12 ± 0.50 0.1 ± 0.98
Formate 6.54 ± 0.82 5.73 ± 1.17 4.33 ± 0.01 4.0 ± 0.01 6.8 ± 0.04 3.84 ± 0.03
Amino acids 4.1 ± 0.24 4.5 ± 0.09 2.83 ± 0.10 3.41 ± 0.04 2.14 ± 0.08 2.93 ± 0.13
Hydrogen 14.53 ± 3.36 14.04 ± 3.14 1.17 ± 0.37 0.96 ± 0.42 ND ND
  1. ND not detected
  2. aAll values are reported in mmol/L
  3. bNet acetate production
  4. cData previously reported [11]