Hydrogen production pathways in Clostridia and their improvement by metabolic engineering
Biotechnology Advances(2024)
摘要
Biological production of hydrogen has a tremendous potential as an environmentally sustainable technology to generate a clean fuel. Among the different available methods to produce biohydrogen, dark fermentation features the highest productivity and can be used as a means to dispose of organic waste biomass. Within this approach, Clostridia have the highest theoretical H2 production yield. Nonetheless, most strains show actual yields far lower than the theoretical maximum: improving their efficiency becomes necessary for achieving cost-effective fermentation processes. This review aims at providing a survey of the metabolic network involved in H2 generation in Clostridia and strategies used to improve it through metabolic engineering. Together with current achievements, a number of future perspectives to implement these results will be illustrated.
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关键词
Hydrogen,Clostridium,Metabolic engineering,Hydrogenase,electron metabolism,Embden-Meyerhoff-Parnas pathway
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