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Table 1 Comparative results of batch ABE fermentation by C. acetobutylicum strains

From: Pleiotropic regulation of a glucose-specific PTS in Clostridium acetobutylicum for high-efficient butanol production from corn stover without detoxification

StrainSugar utilized (g/L)Products (g/L)YB/ABE (g/g)PB/ABE (g/L/h)
AcetateButyrateAcetoneButanolEthanol
7% glucose/xylose (2:1) mixture as carbon sources
 L744.1 ± 1.1/9.1 ± 0.91.3 ± 0.21.0 ± 0.26.5 ± 0.411.2 ± 0.51.2 ± 0.10.21/0.360.19/0.32
 L7(pPthl)45.6 ± 1.5/8.6 ± 0.81.1 ± 0.10.9 ± 0.16.0 ± 0.311.0 ± 0.51.8 ± 0.10.20/0.350.18/0.31
 L7(GlcG)46.6 ± 1.3/5.3 ± 0.80.8 ± 0.10.5 ± 0.16.6 ± 0.511.1 ± 0.41.9 ± 0.20.21/0.380.31/0.54
 L7(ΔGlcG)46.8 ± 1.5/13.7 ± 1.10.9 ± 0.10.4 ± 0.16.1 ± 0.311.0 ± 0.51.2 ± 0.10.18/0.300.15/0.25
Non-detoxified H2SO4-pretreated CSH as carbon sourcesa
 L715.6 ± 1.32.4 ± 0.22.1 ± 0.31.8 ± 0.12.5 ± 0.20.5 ± 0.10.16/0.310.07/0.13
 L7(pPthl)15.2 ± 1.12.8 ± 0.22.3 ± 0.21.7 ± 0.12.5 ± 0.20.5 ± 0.10.16/0.310.07/0.13
 L7(GlcG)45.4 ± 1.61.3 ± 0.11.1 ± 0.16.0 ± 0.310.0 ± 0.41.3 ± 0.10.22/0.380.28/0.48
 L7(ΔGlcG)12.3 ± 1.41.7 ± 0.21.4 ± 0.21.2 ± 0.12.0 ± 0.10.4 ± 0.10.16/0.290.04/0.08
Non-detoxified enzymatically H2SO4-pretreated CSH as carbon sources
 L716.5 ± 1.3b2.6 ± 0.22.2 ± 0.31.4 ± 0.13.0 ± 0.20.4 ± 0.10.18/0.290.08/0.13
 L7(pPthl)15.6 ± 1.0b2.9 ± 0.32.3 ± 0.21.5 ± 0.12.7 ± 0.10.5 ± 0.10.17/0.300.08/0.13
 L7(GlcG)34.5 ± 1.9b1.8 ± 0.21.5 ± 0.23.9 ± 0.27.2 ± 0.30.9 ± 0.10.21/0.350.20/0.33
45.0 ± 1.5c2.7 ± 0.32.1 ± 0.25.6 ± 0.310.0 ± 0.31.0 ± 0.10.22/0.370.28/0.46
52.5 ± 2.0d1.5 ± 0.11.2 ± 0.26.6 ± 0.411.0 ± 0.41.6 ± 0.10.21/0.370.34/0.60
60.0 ± 1.8e2.1 ± 0.21.7 ± 0.16.7 ± 0.412.5 ± 0.41.8 ± 0.20.21/0.350.39/0.66
  1. aWith glucose supplemented to 60 g/L total sugars
  2. bCSH with 45 g/L total sugars and no nutrients added
  3. cCSH with 45 g/L total sugars and 10 g/L CaCO3 added
  4. dCSH with glucose supplemented to 60 g/L total sugars and no nutrients added
  5. eCSH with glucose supplemented to 60 g/L total sugars and 10 g/L CaCO3 added