US Patent 5,795,759
United States Patent and Trademark Office
University of Iowa Research Foundation (Iowa City, IA, US)
The present invention is directed to a novel, biologically-derived carboxylic acid reductase, also referred to herein as an aryl-aldehyde oxidoreductase, that has been isolated and purified from Nocardia sp. strain NRRL 5646, and to methods of using the carboxylic acid reductase as a biocatalyst for the reduction of carboxylic acids or their derivatives to the corresponding useful product(s). In a preferred embodiment, the invention is directed to biochemically-produced vanillin, and to the methods of its production by the biocatalytic reduction of vanillic acid, or a precursor or derivative thereof, in a reaction comprising the substantially purified, biologically-derived carboxylic acid reductase.
Rosazza, John P. N. and Li, Tao Carboxylic acid reductase, and methods of using same. US Patent 5,795,759 filed March 10, 1997 and issued August 18, 1998. https://ir.uiowa.edu/patents/193