The present disclosure relates to a composition for preparing hexanol or butanol and a method for preparing hexanol or butanol using ethanol and synthesis gas, wherein the composition according to an aspect of the present disclosure is a medium composition containing ethanol as an active ingredient, and by culturing a strain producing hexanol or butanol after inoculating with a medium containing the composition and supplying synthesis gas, hexanol or butanol can be prepared economically using inexpensive synthesis gas, and hexanol or butanol can be prepared with high efficiency by focusing the flow of a carbon source consumed in a fermentation process to the production of hexanol or butanol.

The present invention is directed to compositions comprising hydrolase-secreting bacteria and fermenting microorganisms and use thereof, such as for fermentative production of ethanol.

Systems and methods to provide low carbon intensity (CI) transportation fuels through one or more targeted reductions of carbon emissions based upon an analysis of carbon emissions associated with a combination of various options for feedstock procurement, feedstock refining, processing, or transformation, and fuel product distribution pathways to end users. Such options are selected to maintain the total CI (carbon emissions per unit energy) of the transportation fuel below a pre-selected threshold that defines an upper limit of CI for the transportation fuel.

Systems and methods to provide low carbon intensity (CI) transportation fuels through one or more targeted reductions of carbon emissions based upon an analysis of carbon emissions associated with a combination of various options for feedstock procurement, feedstock refining, processing, or transformation, and fuel product distribution pathways to end users. Such options are selected to maintain the total CI (carbon emissions per unit energy) of the transportation fuel below a pre-selected threshold that defines an upper limit of CI for the transportation fuel.

The present invention relates to variants of a parent alpha-amylase. The present invention also relates to polynucleotides encoding the variants and to nucleic acid constructs, vectors, and host cells comprising the polynucleotides, and methods of using the variant enzymes.

The present invention relates to variants of a parent alpha-amylase. The present invention also relates to polynucleotides encoding the variants and to nucleic acid constructs, vectors, and host cells comprising the polynucleotides, and methods of using the variant enzymes.

The present invention relates to a dry grind ethanol process in which post-distillation backset is subjected to aerobic fermentation to remove components that are inhibitory to an ethanolagen, such as yeast, allowing the utilization of an increased amount of post-distillation backset during the initial preparation of starch-containing substrates for the dry grind ethanol process. Aerobic fermentation of the post-distillation backset allows substantially higher backset recycle, resulting in fresh water savings and increased sustainability.

The present invention relates to methods and compositions capable of counteracting heat and ethanol stress to yeast during an ethanol production process. Another aspect of the present invention relates to methods for increasing ethanol production yield by at least 0.5%. Other aspects of the present invention relate to supporting yeast during a fermentation process and reducing overall input costs for ethanol production.

The present invention relates to methods and compositions capable of counteracting heat and ethanol stress to yeast during an ethanol production process. Another aspect of the present invention relates to methods for increasing ethanol production yield by at least 0.5%. Other aspects of the present invention relate to supporting yeast during a fermentation process and reducing overall input costs for ethanol production.

Strains of Saccharomyces cerevisiae yeast that are genetically modified so as to co-express a gene coding a glucoamylase of fungal origin, a gene coding a glucoamylase of Saccharomyces cerevisiae var. diastaticus, and a gene coding a xylanase of fungal origin. The production yield of bioethanol through these strains is greater than that of strains that are otherwise identical but that do not include the gene coding the xylanase of fungal origin. Also, a method for obtaining these yeasts, as well as the use of these yeasts in the production of bioethanol.