Inhibitor tolerant Saccharomyces cerevisiae strain
AssigneeThe United States of America as represented by the Secretary of Agriculture
InventorZonglin L. Liu
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Abstract
Furfural and 5-hydroxymethylfurfural (HMF) are representative inhibitors to ethanologenic yeast generated from biomass pretreatment using dilute acid hydrolysis. Few yeast strains tolerant to inhibitors are available. A novel tolerant strain of Saccharomyces cerevisiae, NRRL Y-50049, having enhanced biotransformation ability to convert furfural to furan methanol (FM), HMF to furan di-methanol (FDM), and is able to produce a normal yield of ethanol as an initial culture.
Claims7
An isolated Saccharomyces cerevisiae strain having been deposited with the United States Department of Agriculture, Agricultural Research Patent Culture Collection as Accession No. NRRL Y-50049, wherein said Saccharomyces cerevisiae strain is capable of in situ detoxification of said furfural and 5-hydroxymethylfurfural via aldehyde reduction while producing ethanol.
A method of producing ethanol comprising culturing Saccharomyces cerevisiae yeast strain NRRL Y-50049 under suitable conditions for a period of time sufficient to allow fermentation of at least a portion of feedstock to produce ethanol, wherein said feedstock contains woody material.
Dependencies are inferred from the claim text.