CA2268477A1 - Food quality indicator device - Google Patents

Food quality indicator device

Info

Publication number
CA2268477A1
CA2268477A1 CA002268477A CA2268477A CA2268477A1 CA 2268477 A1 CA2268477 A1 CA 2268477A1 CA 002268477 A CA002268477 A CA 002268477A CA 2268477 A CA2268477 A CA 2268477A CA 2268477 A1 CA2268477 A1 CA 2268477A1
Authority
CA
Canada
Prior art keywords
indicator
food
indicator compound
substrate
food quality
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CA002268477A
Other languages
French (fr)
Other versions
CA2268477C (en
Inventor
Dwight W. Miller
Jon G. Wilkes
Eric D. Conte
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
US Department of Health and Human Services
Original Assignee
US Government
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by US Government filed Critical US Government
Publication of CA2268477A1 publication Critical patent/CA2268477A1/en
Application granted granted Critical
Publication of CA2268477C publication Critical patent/CA2268477C/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
    • G01N33/02—Food
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N31/00—Investigating or analysing non-biological materials by the use of the chemical methods specified in the subgroup; Apparatus specially adapted for such methods
    • G01N31/22—Investigating or analysing non-biological materials by the use of the chemical methods specified in the subgroup; Apparatus specially adapted for such methods using chemical indicators
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T436/00—Chemistry: analytical and immunological testing
    • Y10T436/15—Inorganic acid or base [e.g., hcl, sulfuric acid, etc. ]
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T436/00—Chemistry: analytical and immunological testing
    • Y10T436/17—Nitrogen containing
    • Y10T436/173845—Amine and quaternary ammonium

Abstract

A food quality indicator device comprising an indicator compound provided on a substrate. The indicator compound changes color due to the presence of volatile compounds, such as volatile bases, in spoiled food, even when the food is frozen. Alternatively, the indicator compound detects the presence of an unwanted amine-producing biological agent, such as bacteria or fungi. The indicator compound is typically contained within a polymeric matrix disposed on the substrate.
Examples of suitable indicator compounds include halogenated azo dyes, sulfonated xanthene dyes, and sulfonated hydroxy-functional triphenylmethane dyes.
CA002268477A 1997-07-16 1998-07-16 Food quality indicator device Expired - Fee Related CA2268477C (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US5267497P 1997-07-16 1997-07-16
US60,052,674 1997-07-16
PCT/US1998/014780 WO1999004256A1 (en) 1997-07-16 1998-07-16 Food quality indicator device

Publications (2)

Publication Number Publication Date
CA2268477A1 true CA2268477A1 (en) 1999-01-28
CA2268477C CA2268477C (en) 2009-02-17

Family

ID=21979176

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002268477A Expired - Fee Related CA2268477C (en) 1997-07-16 1998-07-16 Food quality indicator device

Country Status (10)

Country Link
US (1) US7014816B2 (en)
EP (1) EP0993610A1 (en)
JP (1) JP4538106B2 (en)
KR (1) KR100764516B1 (en)
AU (1) AU8409098A (en)
CA (1) CA2268477C (en)
IL (1) IL129002A (en)
IS (1) IS5002A (en)
NO (1) NO991277L (en)
WO (1) WO1999004256A1 (en)

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JP6162362B2 (en) * 2011-02-09 2017-07-12 国立研究開発法人水産研究・教育機構 Method for detecting bacterial contamination level of fish meat and sensor used for the detection method
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JP2015184332A (en) * 2014-03-20 2015-10-22 東芝テック株式会社 food freshness label
US9341608B2 (en) * 2014-04-14 2016-05-17 Frank Fish Method for determining expected shelf life of seafood
GB201409860D0 (en) * 2014-06-03 2014-07-16 Pakstaite Solveiga Bio-reactive food expiry label
JP6621624B2 (en) * 2015-09-16 2019-12-18 東芝テック株式会社 Food freshness label
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Also Published As

Publication number Publication date
CA2268477C (en) 2009-02-17
EP0993610A1 (en) 2000-04-19
IL129002A0 (en) 2000-02-17
US20020044891A1 (en) 2002-04-18
NO991277D0 (en) 1999-03-16
US7014816B2 (en) 2006-03-21
JP4538106B2 (en) 2010-09-08
KR20000068573A (en) 2000-11-25
WO1999004256B1 (en) 1999-04-29
NO991277L (en) 1999-05-12
IS5002A (en) 1999-03-15
WO1999004256A1 (en) 1999-01-28
JP2001510572A (en) 2001-07-31
IL129002A (en) 2005-09-25
AU8409098A (en) 1999-02-10
KR100764516B1 (en) 2007-10-09

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Legal Events

Date Code Title Description
EEER Examination request
MKLA Lapsed

Effective date: 20150716