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Titre :
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Assessment of the hygienic performances of two beef carcass cooling processes from product temperature history data or enumeration of bacteria on carcass surfaces
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Auteurs :
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C. Gill ;
J. Bryant
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Type de document :
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article/chapitre/communication
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Année de publication :
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1997
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|
Format :
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p. 593-602
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Langues:
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= Anglais
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Catégories :
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INDUSTRIE AGRO-ALIMENTAIRE
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Mots-clés:
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CARCASSE
;
BOEUF
;
REFRIGERATION
;
MICROBIOLOGIE SANITAIRE
;
TEMPERATURE
;
HISTORIQUE
;
ANALYSE MICROBIOLOGIQUE
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Résumé :
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The carcass cooling processes at two beef slaughtering plants were examined. Temperature histories were collected from the deep leg, the aitch bone pocket surface and randomly selected surface sites of carcasses passing through each process. For each process, sets of 25 temperature histories were collected for each type of site, with a single history being collected from each of 75 randomly selected carcases. A swab sample was obtained from a randomly selected site on each of 25 randomly selected carcasses entering and 25 leaving each process. Total aerobic counts, coliforms and Escherichia coli were enumerated in each sample. Carcasses resided in the chiller at plant A for between 15.8 and 28.0 h, but for between 20.0 and 24.0 h at plant B. The ranges of minimum temperature attained at all three types of site were generally lower at plant B than at plant A. However, 1/25 carcasses at both plants had high minimum temperatures indicative of ineffective cooling. An E. Coli proliferation value was calculated for each temperature history from a surface site.
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Source :
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Food microbiology, vol.14
|
