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Table 3 Net end-product formation of cellobiosea fermentations containing 50% (v/v) of spent supernatant

From: The effect of switchgrass loadings on feedstock solubilization and biofuel production by Clostridium thermocellum

Condition Concentration (mM) Final pH
Ethanol Formate Acetate Lactate CO2 Glucose equivalents remaining
Control 116.5 ± 5.5 11.7 ± 0.9 4.0 ± 0.6 0.7 ± 0.3 108.8 ± 9.9 1.9 ± 0.5 6.2 ± 0.0
3.5 g/L Avicel 110.7 ± 4.1 9.8 ± 0.6 3.2 ± 0.3 0.4 ± 0.0 104.1 ± 6.6 1.4 ± 0.1 6.2 ± 0.0
8.8 g/L Avicel 100.1 ± 1.8 9.3 ± 1.2 3.5 ± 0.2 0.6 ± 0.3 94.3 ± 8.4 3.0 ± 0.4 6.1 ± 0.0
17.5 g/L Avicel 91.0 ± 5.8 7.6 ± 1.0 4.1 ± 0.8 0.1 ± 0.1 87.5 ± 11.3 3.9 ± 0.4 6.0 ± 0.0
10 g/L SG 101.6 ± 2.8 11.5 ± 1.7 6.5 ± 1.0 0.7 ± 0.2 96.6 ± 9.2 1.8 ± 0.7 6.1 ± 0.0
25 g/L SG 101.4 ± 1.3 11.8 ± 0.6 4.8 ± 0.4 0.3 ± 0.0 94.4 ± 8.3 2.4 ± 0.1 6.1 ± 0.1
50 g/L SG 107.1 ± 3.2 9.4 ± 0.9 5.5 ± 0.2 0.4 ± 0.0 103.2 ± 5.5 4.6 ± 0.4 6.0 ± 0.0
  1. SG switchgrass
  2. aFermentations contained cellobiose at a concentration of 97 mM glucose equivalents. n = 6