Patents Assigned to GEM Biomedical, Inc.
  • Detection of fish spoilage by colorimetry
    Patent number: 5744321
    Abstract: A rapid, on-site method for indicating the degree of spoilage, if any, of finfish by the level of bacteria present therein. A small quantity of flesh is cut from a representative fish and kneaded in a bacterial nutrient broth to extract any bacteria present. A triphenyl tetrazolium dye is added as an indicator reagent, followed by an anionic surfactant and a lower alkyl alcohol. The developed color, if any, is compared to a control color chart representative of acceptable and unsatisfactory degrees of bacterial contamination or spoilage.
    Type: Grant
    Filed: February 21, 1997
    Date of Patent: April 28, 1998
    Assignee: GEM Biomedical, Inc.
    Inventor: Patrick Harewood