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Table 2 Fermentation end products (molar concentrations) obtained during glucose fermentation at unregulated pH (first sequence)

From: Fermentative hydrogen production from glucose and starch using pure strains and artificial co-cultures of Clostridium spp.

Strain/co-culture Formate (mM) Lactate (mM) Acetate (mM) Butyrate (mM) H2 yield (mol H2/mol glucose) Biogas production rate (L biogas/ h)a
C. beijerinckii DSM 1820 3.92 5.28 3.15 8.33 1.45 0.38
C. butyricum CWBI 1009 18.48 3.44 9.20 16.58 0.97 0.34
C. pasteurianum DSM 525 0.57 12.78 10.82 7.65 0.66 1.03
C. felsineum DSM 794 12.14 0.61 3.61 1.80 0.62 0.93
Co-culture 1 3.09 11.81 8.45 3.89 1.61 0.92
Co-culture 2 13.44 1.79 9.55 11.25 1.02 1.02
Co-culture 3 8.0 3.61 8.67 9.12 1.33 1.4
  1. a Maximum biogas production rate.