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1. WO1999004256 - FOOD QUALITY INDICATOR DEVICE

Publication Number WO/1999/004256
Publication Date 28.01.1999
International Application No. PCT/US1998/014780
International Filing Date 16.07.1998
Chapter 2 Demand Filed 17.02.1999
IPC
G01N 31/22 2006.1
GPHYSICS
01MEASURING; TESTING
NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
31Investigating or analysing non-biological materials by the use of the chemical methods specified in the subgroups; Apparatus specially adapted for such methods
22using chemical indicators
CPC
G01N 31/22
GPHYSICS
01MEASURING; TESTING
NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
31Investigating or analysing non-biological materials by the use of the chemical methods specified in the subgroup; Apparatus specially adapted for such methods
22using chemical indicators
G01N 33/02
GPHYSICS
01MEASURING; TESTING
NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
33Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
02Food
Y10T 436/15
YSECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
10TECHNICAL SUBJECTS COVERED BY FORMER USPC
TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
436Chemistry: analytical and immunological testing
15Inorganic acid or base [e.g. , hcl, sulfuric acid, etc. ]
Y10T 436/173845
YSECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
10TECHNICAL SUBJECTS COVERED BY FORMER USPC
TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
436Chemistry: analytical and immunological testing
17Nitrogen containing
173845Amine and quaternary ammonium
Applicants
  • THE GOVERNMENT OF THE UNITED STATES OF AMERICA,re presented by THE SECRETARY, DEPARTMENT OF HEALTH AND HUMAN SERVICES [US]/[US] (AL, AM, AT, AU, AZ, BA, BB, BE, BF, BG, BJ, BR, BY, CA, CF, CG, CH, CI, CM, CN, CU, CY, CZ, DE, DK, EE, ES, FI, FR, GA, GB, GE, GH, GM, GN, GR, GW, HR, HU, ID, IE, IL, IS, IT, JP, KE, KG, KP, KR, KZ, LC, LK, LR, LS, LT, LU, LV, MC, MD, MG, MK, ML, MN, MR, MW, MX, NE, NL, NO, NZ, PL, PT, RO, RU, SD, SE, SG, SI, SK, SL, SN, SZ, TD, TG, TJ, TM, TR, TT, UA, UG, UZ, VN, YU, ZW)
  • MILLER, Dwight, W. [US]/[US] (UsOnly)
  • WILKES, Jon, G. [US]/[US] (UsOnly)
  • CONTE, Eric, D. [US]/[US] (UsOnly)
Inventors
  • MILLER, Dwight, W.
  • WILKES, Jon, G.
  • CONTE, Eric, D.
Agents
  • MUELLER, Douglas, P.
Priority Data
60/052,67416.07.1997US
Publication Language English (en)
Filing Language English (EN)
Designated States
Title
(EN) FOOD QUALITY INDICATOR DEVICE
(FR) INDICATEUR DE LA QUALITE D'UN ALIMENT
Abstract
(EN) 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.
(FR) L'invention concerne un dispositif indicateur de la qualité de aliments, comprenant un composé indicateur placé sur un substrat. Le composé indicateur change de couleur en présence de composés volatils tels que des bases volatiles apparaissant dans la nourriture avariée, même lorsque la nourriture est congelée. Le composé indicateur détecte en outre la présence d'agents biologiques indésirables producteurs d'amines tels que bactéries ou champignons. Le composé indicateur est normalement contenu dans une matrice polymère disposées sur le substrat. Les composés indicateurs qui conviennent sont par exemple les colorants azoïques halogénés, les colorants xanthène sulfoné et les colorants triphénylméthane sulfoné à fonctionnalité hydroxy.
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