PROCESS FOR THE BIOLOGICAL PRODUCTION OF n-BUTANOL WITH HIGH YIELD
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Jul 1, 2014
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Oct 31, 2006
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Abstract
The present invention provides a method for the biological production of n-butanol at high yield from a fermentable carbon source. In one aspect of the present invention, a process for the conversion of glucose to n-butanol is achieved by the use of a recombinant organism comprising a host C. acetobutilicum transformed i) to eliminate the butyrate pathway ii) to eliminate the acetone pathway iii) to eliminate the lactate pathway and iv) to eliminate the acetate pathway. In another aspect of the present invention, the hydrogen flux is decreased and the reducing power redirected to n-butanol production by attenuating the expression of the hydrogenase gene. Optionally the n-butanol produced can be eliminated during the fermentation by gas striping and further purified by distillation.
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