The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Patent No.:

US 7811783 B1

PDF
Full Text
Expired
Date of Patent:
Oct. 12, 2010

Filed:

Oct. 29, 2007
Applicants:

Grete Lorentzen, Tromsø, NO;

Olaug Taran Skjerdal, Nesøya, NO;

James D. Berg, Oslo, NO;

Inventors:

Grete Lorentzen, Tromsø, NO;

Olaug Taran Skjerdal, Nesøya, NO;

James D. Berg, Oslo, NO;

Assignee:

Colifast AS, Lysaker, NO;

Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C12P 1/00 (2006.01);
U.S. Cl.
CPC ...
Abstract

A rapid method for detecting spoilage of a food sample, particularly a fish sample, by detecting and enumerating sulfide-producing bacteria (SPB). A growth medium containing iron and sulfur is combined with the food sample forming an incubation mixture which is incubated for a period of time. In one embodiment, a plurality of fluorescence measurements are taken during an incubation period of about 3 hours to 17 hours at 30° C. SPB are determined to be present in the sample if the fluorescence measurement initially increases and then decreases to form a fluorescence maximum (peak). The time to detection of the fluorescence peak can be used with a correlation schedule to enumerate the SPB in the food sample. In another embodiment, a visual test can also be used to identify color changes in the incubation mixture to provide a semi-quantitative enumeration of SPB effective after about 3 hours to 17 hours of incubation.


Find Patent Forward Citations

Lorentzen, Grete. (2010). Rapid method of detection and enumeration of sulfide-producing bacteria in food products (U.S. Patent No. 7811783). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/7811783

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