1987
DOI: 10.1051/lait:1987323
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Les spores thermorésistantes du lait utilisé pour la fabrication de laits de longue conservation

Abstract: La concentration et la thermorésistance de la flore sporulée du lait est étudiée dans deux usines de la région parisienne: (i) spores thermophiles du lait destiné à la fabrication de lait V.H.T., (ii) spores mésophiles de recontamination du lait destiné à la stérilisation en bouteille. Pour la concentration, Dl210c et z on trouve les valeurs moyennes (i) 2,3 ml-l ,58 s, 9,6 K et (ii) 0,3 ml ", 0,6 s, 10 K.

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Cited by 9 publications
(2 citation statements)
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“…The density of the inoculum used in the heat challenge study should reflect levels that would be expected to occur naturally, and the inoculum should be evenly distributed in the lowest amount of test medium. Inocula of lower cell densities (<10 5 cfu), which may better mimic real levels in the product under consideration, can be used if large sample volumes can be processed, e.g., using most probable number (MPN) methods (Duquet, Trouvat, Mouniqua, Odet, & Cerf, 1987), or more sensitive methods are applied, e.g., based on staining and flow cytometry (viable and injured cells can be detected) (Khan, Pyle, & Camper, 2010).…”
Section: Culture Selection Preparation and Testing Mediummentioning
confidence: 99%
“…The density of the inoculum used in the heat challenge study should reflect levels that would be expected to occur naturally, and the inoculum should be evenly distributed in the lowest amount of test medium. Inocula of lower cell densities (<10 5 cfu), which may better mimic real levels in the product under consideration, can be used if large sample volumes can be processed, e.g., using most probable number (MPN) methods (Duquet, Trouvat, Mouniqua, Odet, & Cerf, 1987), or more sensitive methods are applied, e.g., based on staining and flow cytometry (viable and injured cells can be detected) (Khan, Pyle, & Camper, 2010).…”
Section: Culture Selection Preparation and Testing Mediummentioning
confidence: 99%
“…Cette méthode a été modifiée par ODET et al (1985) qui, pour les spores du lait matière première, dénombrent seulement celles qui sont susceptibles de se développer dans le lait. L'article de DUQUET et al (1986) présente des résultats obtenus ainsi, résumés dans le tableau I, et fournit les détails pratiques de la méthode.…”
Section: Choix Des Microorganismesunclassified