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Titre :
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Evaluation of the hygienic performances of the processes for cleaning, dressing and cooling pig carcasses at eight packing plants
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Auteurs :
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C. Gill ;
F. Dussault ;
R. Holley ;
AL Et
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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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2000
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Format :
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p. 65-72
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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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PORCIN
;
CARCASSE
;
HYGIENE
;
CONTAMINATION
;
BACTERIE COLIFORME
;
REFRIGERATION
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Résumé :
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The hygienic performances of the processes for the production of cooled carcasses at eight pork packing plants were assessed from small sets of microbiological data. At each plant, a single sample was obtained from a randomly selected site on each of 25 randomly selected carcasses at each of three stages of processing, which were after polishing, after washing at the end of the dressing process, and after cooling. The aerobic bacteria, coliforms and Escherichia coli recovered from each sample were enumerated. When bacteria of one type were recovered from = 20 of 25 samples, the log mean number of those bacteria on the population of carcasses undergoing processing was estimated on the assumption that the set of counts was normally distributed. The log of the total number recovered from 25 samples was calculated for each set of counts. The log mean numbers of total aerobic bacteria recovered from the polished carcasses at different plants ranged from about 1.9 to 3.8 log cfu cm. At six of the plants, the log mean numbers of total aerobes on the cooled carcasses did not differ substantially from the log mean numbers on the polished carcasses, but the log mean numbers on the cooled carcasses were substantially higher at one plant and substantially lower at another than on the polished carcasses.
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Source :
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International journal of food microbiology, vol.58, n°1-2
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