Extraction solvents derived from oil for alcohol removal in extractive fermentation

摘要

In an alcohol fermentation process, oil derived from biomass is chemically converted into an extractant available for in situ removal of a product alcohol such as butanol from a fermentation broth. The glycerides in the oil can be chemically converted into a reaction product, such as fatty acids, fatty alcohols, fatty amides, fatty acid methyl esters, fatty acid glycol esters, and hydroxylated triglycerides, and mixtures thereof, which forms a fermentation product extractant having a partition coefficient for a product alcohol greater than a partition coefficient of the oil of the biomass for the product alcohol. Oil derived from a feedstock of an alcohol fermentation process can be chemically converting into the fermentation product extractant. The oil can be separated from the feedstock prior to the feedstock being fed to a fermentation vessel, and the separated oil can be chemically converted to a fermentation product extractant, which can then contacted with a fermentation product comprising a product alcohol, whereby the product alcohol is separated from the fermentation product.

主权项

1. A composition comprising:
a recombinant yeast capable of producing butanol from a feedstock; butanol; and at least one extractant comprising fatty acids selected from the group consisting of arachidic acid, azaleic acid, capric acid, caprylic acid, lauric acid , linoleic acid, myristic acid, oleic acid, palmitic acid, stearic acid, and mixtures thereof; wherein the extractant is produced from the feedstock.