Patents Assigned to Chr. Hanson A/S
  • Genetically modified lactic acid bacteria having modified diacetyl reductase activities
    Patent number: 6413765
    Abstract: Genetically modified lactic acid bacteria having a reduced or lacking or enhanced diacetyl reductase activity, acetoin reductase activity and/or butanediol dehydrogenase activity are provided. Such bacteria are used in starter cultures in the production of food products including dairy products where it is desired to have a high content of diacetyl and for reducing or completely removing diacetyl in beverages including beers, fruit juices and certain types of wine, where the presence of diacetyl is undesired.
    Type: Grant
    Filed: April 21, 1999
    Date of Patent: July 2, 2002
    Assignee: Chr. Hanson A/S
    Inventors: Mats Walfridsson, Claus Maxel Henriksen, Dan Nilsson