fermentative hydrogen production

Edge evidence

• fermentative hydrogen production participates in fermentation biolink:participates_in

  Fermentative H2 production is a class of fermentation metabolism.

  • DOI:10.3389/fmicb.2021.703525 Energy-conservation review supports H2 production as a redox-balancing fermentation output via hydrogenases.
• fermentative hydrogen production produces molecular hydrogen METPO:2000202

  Hydrogenases produce H2 to regenerate oxidized cofactors.

  • DOI:10.1016/S0360-3199(02)00131-3 Hallenbeck & Benemann review biological hydrogen production, including dark fermentative H2 generation.
• [FeFe] hydrogenase produces molecular hydrogen METPO:2000202

  [FeFe]-hydrogenases are producers of H2 in dark fermentation.

  • DOI:10.3390/en16083321 [FeFe]-hydrogenases explicitly noted as producers of H2 in dark fermentation.
• low H2 partial pressure stimulates fermentative hydrogen production

  Low ambient H2 partial pressure stimulates H2 formation.

  • DOI:10.1128/aem.00634-23 Low ambient H2 stimulated hydrogen (H2) formation; likely broadly relevant across fermenters.
• high H2 partial pressure inhibits fermentative hydrogen production RO:0002212

  High ambient H2 partial pressure inhibits H2 formation (product feedback).

  • DOI:10.1128/aem.00634-23 High H2 inhibited H2 formation.
• pH affects fermentative hydrogen production

  pH affects the activity of hydrogenase enzymes and thus dark fermentative H2 yield.

  • DOI:10.3390/en16083321 pH affects the activity of hydrogenase enzymes and dark fermentative H2 yield.