Figure 2From: Fermentative hydrogen production from glucose and starch using pure strains and artificial co-cultures of Clostridium spp. A simplified overview of the main metabolic pathways involved in H 2 production by Clostridium spp. Dashed lines indicate hypothetical pathways. 1-PFOR, 2-PFL, 3-[FeFe] TR(M2) hydrogenase [32], 4-pathway proposed by Matsumoto et al., [33], Fdox/red-ferredoxin oxidized/reduced.Back to article page