Cyanobacterial hydrogen production

With the global attention and research now being focussed on looking for an alternative to fossil fuel, hydrogen is the hope of future. Cyanobacteria are highly promising microorganisms for biological photohydrogen production . The review highlights the advancement in the biology of cyanobacterial hy drogen production in recent years. It discusses the enzymes involved in hyd rogen production, viz. hydrogenases and nitrogenases, various strategies de veloped by cyanobacteria to limit nitrogenase inactivation by atmospheric a nd photosynthetic O-2, different biochemical and physicochemical parameters influencing the commercial cyanobacterial hydrogen production and the meth ods opted by different researchers for eliminating them to obtain maximum a nd sustained hydrogen production. Integrating the existing knowledge, techn iques and expertise available, much future improvement and progress can be made in the field.