Photosynthetic hydrogen production

Details Photosynthetic hydrogen production Photosynthetic hydrogen production

2004-07-07

2008-05-13

Achutamurthy, Ponnathapu (Department: 1652)

Chemistry: molecular biology and microbiology

Micro-organism, per se ; compositions thereof; proces of...

Algae, media therefor

C435S252300, C435S253600, C435S257200, C435S168000, C536S023200

Reexamination Certificate

active

07371560

ABSTRACT:
A process for the production of hydrogen, comprising the steps of: (i) providing a photosynthetic microorganism having electron transfer capability through a photosynthetic light reaction pathway and through a respiratory electron transfer chain involving an oxidative phosphorylation pathway, and which expresses a hydrogenase, wherein regulation of the oxidative phosphorylation pathway is disrupted with the result that electron flow along the respiratory electron transfer chain toward cytochrome oxidase (complex IV) is reduced; ii) culturing the microorganism under microoxic and illuminated conditions; and (iii) collecting evolved hydrogen.

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