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Table 1 Optimal pH ranges for H 2 production by pure Clostridium strains and co-cultures determined during one-stage glucose fermentation (first sequence) at unregulated pH

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

Strain/ co-culture pH value
  Optimal Inhibitory
C. beijerinckii DSM 1820 6.7 5.2
C. butyricum CWBI 1009 5.15 4.7
C. pasteurianum DSM 525 5.4 4.6
C. felsineum DSM 794 5.5 5
Co-culture 1 5.3 4.7
Co-culture 2 5.3 4.6
Co-culture 3 5.3 5.0