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Table 4 The influence of headspace to the control strain Cac-CON and the overexpressing NADH oxidase strain Cac-NOX

From: A water-forming NADH oxidase regulates metabolism in anaerobic fermentation

Products (g/L) Headspace
Cac-CON Cac-NOX
75 % 50 % 25 % 0 % 75 % 50 % 25 % 0 %
Acetone 5.12 ± 0.26 4.47 ± 0.22 5.08 ± 0.25 4.56 ± 0.23 4.90 ± 0.24 4.18 ± 0.21 2.99 ± 0.15 1.31 ± 0.07
Ethanol 2.07 ± 0.10 1.98 ± 0.10 2.11 ± 0.11 1.83 ± 0.09 0.77 ± 0.04 0.95 ± 0.05 0.48 ± 0.02 0.24 ± 0.01
Butanol 12.15 ± 0.61 11.96 ± 0.60 12.17 ± 0.61 11.78 ± 0.59 8.79 ± 0.44 8.37 ± 0.42 5.84 ± 0.29 3.29 ± 0.16
Acetic acid 0.84 ± 0.04 0.45 ± 0.02 0.52 ± 0.03 1.78 ± 0.09 1.56 ± 0.08 3.37 ± 0.17 1.91 ± 0.10 2.50 ± 0.12
Butyric acid 0.64 ± 0.03 0.28 ± 0.01 0.24 ± 0.01 0.32 ± 0.02 1.47 ± 0.07 0.32 ± 0.02 0.74 ± 0.04 0.45 ± 0.02
  1. Each value is an average of three parallel replicates