Patents by Inventor Birte Svensson

Birte Svensson has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Process for enzymatic hydrolysis of starch to glucose
    Patent number: 5162210
    Abstract: A process for converting starch or partially hydrolyzed starch into a syrup containing dextrose includes the steps of saccharifying starch hydrolyzate in the presence of a saccharifying starch hydrolyzate in the presence of a mutated glucoamylase or related enzyme and increasing the selectivity of the enzyme for .alpha.-(1.fwdarw.4)-glucosidic bonds by the glucoamylase or related enzyme by including at least one mutation, the mutation substituting an amino acid of the enzyme with at least one amino acid chosen by comparison with structurally related regions of other enzymes that selectively hydrolyze only .alpha.-(1.fwdarw.4) glucosidic bonds.Enzymes made in accordance with the present invention are also disclosed.
    Type: Grant
    Filed: June 29, 1990
    Date of Patent: November 10, 1992
    Assignee: Iowa State University Research Foundation
    Inventors: Michael Sierks, Birte Svensson