Role of communities versus enzymes in setting anode potentials

4 Role of communities versus enzymes in setting anode potentials 

Therefore, the potential for electrons going from NADH to make H2 at a low concentration of 10 bar is Eem/= 0.296 V - (-0.320 V) = 0.024 V. So as long as the concentration of hydrogen remains low, it is possible for electrons to flow from NADH to make hydrogen. 

These results suggest that interspecies electron transfer may be occurring between fermentative and other microorganisms. Additional research in this area is needed to more fully investigate the potential for this mechanism of syntrophic growth by bacteria. 

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