Microbiological Testing of Raw, Boxed Beef in the Context of Hazard Analysis Critical Control Point at a High-Line-Speed Abattoir

Authors: Jericho, K. W. F.1; Kozub, G. C.2; Gannon, V. P .J.1; Taylor, C. M.3

Source: Journal of Food Protection®, Number 12, December 2000, pp. 1628-1760 , pp. 1681-1686(6)

Publisher: International Association for Food Protection

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The efficacy of cold storage of raw, bagged, boxed beef was assessed microbiologically at a high-line-speed abattoir (270 carcasses per h). At the time of this study, plant management was in the process of creating a hazard analysis critical control point plan for all processes. Aerobic bacteria, coliforms, and type 1 Escherichia coli were enumerated (5 by 5-cm excision samples, hydrophobic grid membrane filter technology) before and after cold storage of this final product produced at six fabrication tables. In addition, the temperature-function integration technique (TFIT) was used to calculate the potential number of generations of E. coli during the first 24 or 48 h of storage of the boxed beef. Based on the temperature histories (total of 60 boxes, resulting from 12 product cuts, five boxes from each of two fabrication tables on each of 6 sampling days, and six types of fabrication tables), TFIT did not predict any growth of E. coli (with or without lag) for the test period. This was verified by E. coli mean log10 values of 0.65 to 0.42 cm2 (P > 0.05) determined by culture before and after the cooling process, respectively. Counts of aerobic bacteria and coliforms were significantly reduced (P < 0.001 and P < 0.05, respectively) during the initial period of the cooling process. There were significant microbiological differences (P < 0.05) between table-cut units.

Document Type: Research Article

Affiliations: 1: Health Canada, Health Protection Branch, Animal Diseases Research Institute, P. O. Box 640, Lethbridge, Alberta, Canada T1J 3Z4 2: Agriculture and Agri-Food Canada, Research Branch, Agriculture Centre, Lethbridge, Alberta, Canada T1J 4B1 (retired) 3: Canadian Food Inspection Agency, Alberta Region, 220-4 Avenue Southeast, Calgary, Alberta, Canada T2G 4X3

Publication date: December 1, 2000

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    First published in 1937, the Journal of Food Protection®, is a refereed monthly publication. Each issue contains scientific research and authoritative review articles reporting on a variety of topics in food science pertaining to food safety and quality. The Journal is internationally recognized as the leading publication in the field of food microbiology with a readership exceeding 11,000 scientists from 70 countries. The Journal of Food Protection® is indexed in Index Medicus, Current Contents, BIOSIS, PubMed, Medline, and many others.

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