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Detection of contaminants in food

  • US 5,869,341 A
  • Filed: 03/31/1998
  • Issued: 02/09/1999
  • Est. Priority Date: 01/11/1996
  • Status: Expired due to Term
First Claim
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1. A food contamination detector for use with a food container adapted for containing a food product comprising:

  • a first bar code symbol coded to identify, a food product by a bar code reader;

    a second bar code symbol coded to identify contaminated food by a bar code reader;

    an indicator bound to a substrate wherein the indicator is in communication with the juices from the food; and

    means for changing the color of the indicator when a toxin is present in the juices from the food;

    wherein the change in the color of the indicator causes the first bar code symbol to be unreadable by a bar code reader and causes the second bar code symbol to become readable by a bar code reader to identify food contamination.

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