Abstract:
Methods and systems for the production of alcohols are described. A two stage process is utilized, where fermentation in a first stage produces an intermediate product, such as an amino acid or organic acid, from a carbon containing feedstock. A second stage produces alcohol by fermentation of this intermediate product.
Abstract:
The present invention provides a process for producing a vinylglycine derivative represented by the formula (2): wherein R 1 represents hydrogen, an alkyl group having 1 to 8 carbon atoms, or an aryl group having 6 to 20 carbon atoms; or a salt thereof comprising a step of reacting in the presence of an ammonium salt compound and a cofactor a vinyl glyoxylic acid represented by the formula (1): wherein R 1 is the same as defined above; or a salt thereof with an amino acid dehydrogenase, a culture of a microorganism capable of producing an amino acid dehydrogenase or a processed product of the culture, etc.
Abstract:
The present disclosure relates to the use of an amino acid dehydrogenase in combination with a cofactor regenerating system comprising a ketoreductase. In particular embodiments, the process can be used to prepare L-tert-leucine using a leucine dehydrogenase.
Abstract:
Methods for chemically transforming compounds using a mutated enzyme are provided, and more particularly a method for the production of an amino acid from a target 2-ketoacid, the production of an amine from a target ketone and the production of an alcohol from a target ketone. The methods comprise creating a mutated enzyme that catalyzes the reductive amination or transamination of the target 2-ketoacid or ketone or the reduction of the ketone and providing the mutated enzyme in a reaction mixture comprising the target 2-ketoacid or ketone under conditions sufficient to permit the formation of the desired amino acid, amine or alcohol to thereby produce the amino acid, amine or alcohol.