Patents Assigned to Northwestern Chemical Co.
  • Curcumin in the detection and warning of cyanide adulterated food products
    Patent number: 5047100
    Abstract: Curcumin is employed for the purpose of detecting and warning of the presence of cyanide in a food, drug, or other oral composition. The curcumin is incorporated into a food packaging material. In the presence of cyanide, the curcumin undergoes a color change causing at least a portion of the packaging material to manifest a color change. The color change is sufficient to be detected by an observer, thereby providing a warning of cyanide adulteration of the product.
    Type: Grant
    Filed: July 18, 1989
    Date of Patent: September 10, 1991
    Assignee: Northwestern Chemical Co.
    Inventors: Susan Raymond, Michael J. Greenberg, Firoz Rajani