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Table 1 Comparison of carbohydrate solubilization and utilization for mono- and cocultures

From: Declining carbohydrate solubilization with increasing solids loading during fermentation of cellulosic feedstocks by Clostridium thermocellum: documentation and diagnostic tests

  Solid loading Fractional carbohydrate solubilization Fractional utilization of solubilized glucose Fractional utilization of solubilized xylose
Corn stover
 Monoculture 20 g/L 0.656 ± 0.017 0.938 ± 0.002
80 g/L 0.557 ± 0.010 0.946 ± 0.001
 Coculture 20 g/L 0.749 ± 0.014 0.957 ± 0.001 0.779 ± 0.027
80 g/L 0.632 ± 0.002 0.958 ± 0.001 0.798 ± 0.002
Switchgrass
 Monoculture 20 g/L 0.406 ± 0.028 0.904 ± 0.015
80 g/L 0.259 ± 0.026 0.910 ± 0.003
 Coculture 20 g/L 0.457 ± 0.042 0.952 ± 0.002 0.817 ± 0.002
80 g/L 0.308 ± 0.021 0.954 ± 0.000 0.821 ± 0.002
  1. Fractional sugar utilization calculated as one minus the mass of sugars found in the fermentation broth over the theoretical mass of sugars that have been solubilized based on fermented and unfermented solids. Sugar concentrations in the fermentation broth quantified in monomeric form via mild acid hydrolysis of the supernatant. No fractional utilization of xylose was detected in the monocultures