Method of producing butanol using extractive fermentation with the addition of the osmolyte

摘要

And the fermentation basal medium, the presence of osmolyte at least one of a concentration sufficient optionally, at least, compared to the partition coefficient of butanol in the presence of osmolyte concentration in the fermentable carbon source, to increase the partition coefficient butanol by extraction in water-immiscible organic extractant in the butanol product is removed during the fermentation, a method for producing butanol via microbial fermentation is provided. Monosaccharides, disaccharides, glycerol, cane juice, molasses, polyethylene glycol, dextran, high fructose corn syrup, corn mash, starch, cellulose, and, osmolytes, may include a combination thereof. The compositions and methods for the recovery of butanol from the fermentation medium is provided.