Patents Represented by Attorney Paula A. DeGrandis

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  • Chitosan and method of preparing chitosan
    Patent number: 6972284
    Abstract: A highly deacetylated chitosan obtained from microbial biomass, a method of obtaining chitosan from microbial biomass, and biomass for making chitosan are disclosed. The method includes providing chitin-containing biomass; reacting the chitin-containing biomass in a caustic solution of greater than 25 percent alkali at a reaction temperature greater than 95° C. for a reaction period of at least 10 hours to convert the chitin in the biomass to chitosan; and separating the chitosan from the caustic solution.
    Type: Grant
    Filed: December 18, 2000
    Date of Patent: December 6, 2005
    Assignee: Cargill, Incorporated
    Inventors: Weiyu Fan, John A. Bohlmann, James R. Trinkle, James Donald Steinke, Ki-Oh Hwang, Joseph P. Henning
  • Process for the production of Masa flour and dough
    Patent number: 6818240
    Abstract: This invention is directed to a continuous process for the production of flour and dough using ground corn kernels where before grinding the hull and tip cap are removed from the corn kernels which ground corn produces an endosperm/germ flour. The endosperm/germ flour then is moisturized and cooked with direct and indirect heat to gelatinize about 10 to about 50 weight percent of the starch in the flour.
    Type: Grant
    Filed: October 8, 2003
    Date of Patent: November 16, 2004
    Assignee: Cargill, Incorporated
    Inventors: Edward J. Brubacher, Ansui Xu, Pablo Gaito
  • N-acetyl-D-glucosamine and process for producing N-acetyl-D-glucosamine
    Patent number: 6693188
    Abstract: The present invention is directed to N-acetyl-D-glucosamine obtained from microbial biomass, and to methods of obtaining N-acetyl-D-glucosamine from microbial biomass. In particular, the present invention is directed to the use of fungal biomass to create N-acetyl-D-glucosamine. The N-acetyl-D-glucosamine is efficiently obtained at high purity by degrading chitin in the fungal biomass to create N-acetyl-D-glucosamine.
    Type: Grant
    Filed: August 8, 2001
    Date of Patent: February 17, 2004
    Assignee: Cargill Incorporated
    Inventors: John Andrew Bohlmann, David O. Schisler, Ki-Oh Hwang, Joseph P. Henning, James R. Trinkle, Todd Bryan Anderson, James Donald Steinke, Andrea Vanderhoff
  • Glucosamine and method of making glucosamine from microbial biomass
    Patent number: H2218
    Abstract: Glucosamine suitable for human or animal consumption is disclosed. The glucosamine is derived from microbial biomass containing chitin. Suitable starting materials include substantially uniform microbial fungal sources, such as fungal sources derived from Aspergillus sp., Penicillium sp., Mucor sp. and combinations thereof. Methods of producing glucosamine by acid hydrolysis of fermented fungal biomass are also disclosed.
    Type: Grant
    Filed: March 5, 2003
    Date of Patent: June 3, 2008
    Inventors: Ki-Oh Hwang, James Donald Steinke, Joseph P. Henning, John A. Bohlmann, James R. Trinkle, Weiyu Fan