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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]