Patents by Inventor Maike Petersen

Maike Petersen 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).

  • Enzymatic process for the preparation of rosmarinic acid
    Patent number: 5011775
    Abstract: A process is disclosed for the production of rosmarinic acid of the formula ##STR1## by enzymatic reaction of 3-(3,4-dihydroxyphenyl)-lactic acid with caffeoyl-coenzyme A in the presence of rosmarinic acid synthase. Ketodopa, which is readily accessible from dopa, is used as the starting material and caffeoyl-CoA is preferably regenerated by addition of caffeic acid.
    Type: Grant
    Filed: December 13, 1989
    Date of Patent: April 30, 1991
    Assignee: Forschungszentrum Juelich GmbH
    Inventors: Nagaraj N. Rao, Christian Wandrey, Maike Petersen, August W. Alfermann