Method for determining deleterious bacterial growth in...

G - Physics – 01 – N

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G01N 31/22 (2006.01) A23L 1/00 (2006.01) C12Q 1/04 (2006.01) C12Q 1/22 (2006.01) G01N 33/02 (2006.01)

Patent

CA 2330646

The present invention relates to a method for determining the presence or absence of contaminating bacteria in a packaged food sample comprising storing food in a package having as a lining a hydrophilic polymeric composition, said composition preferably being permeable to water and at least one gas dissolved in water or water vapor and being selected from the group consisting of carbon dioxide, carbon monoxide, hydrogen sulfide, sulfur dioxide, hydrogen and ammonia gas and containing an indicator for detecting the presence or absence of said gas; said indicator being polymerized or dispersed throughout said polymeric composition or coated onto a hydrophobic polymeric composition.

La présente invention concerne un procédé permettant de déterminer la présence ou l'absence de bactéries contaminantes dans un échantillon alimentaire conditionné. Ledit procédé consiste à stocker le produit alimentaire dans un conditionnement comportant une garniture constituée d'une composition polymère hydrophile. Ladite composition, qui est, de préférence, perméable à l'eau et à au moins un gaz dissous dans de l'eau ou de la vapeur d'eau, est sélectionnée dans le groupe constitué du dioxyde de carbone, du monoxyde de carbone, du sulfure d'hydrogène, du dioxyde de soufre, de l'hydrogène et du gaz ammoniac. Elle renferme un indicateur qui permet de détecter la présence ou l'absence dudit gaz; ledit indicateur étant polymérisé ou dispersé dans cette composition polymère ou déposé sur une composition polymère hydrophobe.

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