Designer organisms for photobiological butanol production...

C - Chemistry – Metallurgy – 12 – P

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C12P 7/16 (2006.01) C10L 1/30 (2006.01)

Patent

CA 2716364

The present invention provides a biosafety-guarded photobiological butanol production technology based on designer transgenic plants, designer algae, designer blue- green algae (cyanobacteria and oxychlorobacteria), or designer plant cells. The designer photosynthetic organisms are created such that the endogenous photobiological regulation mechanism is tamed, and the reducing power (NADPH) and energy (ATP) acquired from the photosynthetic process are used for synthesis of butanol (CH3CH2CH2CH2OH) directly from carbon dioxide (CO2) and water (H2O). The butanol production methods of the present invention completely eliminate the problem of recalcitrant lignocellulosics by bypassing the bottleneck problem of the biomass technology. The photobiological butanol-production technology of the present invention is expected to have a much higher solar-to-butanol energy-conversion efficiency than the current technology and could also help protect the Earth's environment from the dangerous accumulation of CO2 in the atmosphere.

La présente invention concerne une technologie de production de butanol photobiologique biosécurisée basée sur des plants transgéniques de conception, des algues de conception, des algues bleu-vert de conception (cyanobactérie et oxychlorobactérie), ou des cellules végétales de conception. Les organismes photosynthétiques de conception sont créés de telle sorte que le mécanisme de régulation photobiologique endogène soit apprivoisé et le pouvoir réduction (NADPH) et l'énergie (ATP) acquis à partir du processus de photosynthèse sont utilisés pour la synthèse du butanol (CH3CH2CH2CH2OH) directement à partir du dioxyde de carbone (CO2) et d'eau (H2O). Les procédés de production de butanol de la présente invention éliminent complètement le problème de lignocellulosiques récalcitrants en contournant le problème de goulot de la technologie de biomasse. La technologie de production de butanol photobiologique de la présente invention est censée avoir un rendement de conversion d'énergie solaire en butanol bien plus élevé que la technologie actuelle et pourrait également aider à protéger l'environnement de la Terre vis-à-vis de l'accumulation dangereuse du CO2 dans l'atmosphère.

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