Authors: Liu, Lin¹; Hussain, Syeda K.¹; Miller, Robert S.¹; Oyarzabal, Omar A.²

Source: Journal of Food Protection®, Volume 72, Number 11, November 2009 , pp. 2428-2432(5)

Publisher: International Association for Food Protection

Abstract:

The goals of this study were to evaluate the efficacy of the mini VIDAS automated immunoassay chemistry system to detect Campylobacter spp. from retail broiler meat enriched in Bolton broth supplemented with lysed blood (B+B) or without blood (B-B), and to detect positive samples at 24 versus 48 h after enrichment. Retail broiler meat was enriched and tested for Campylobacter spp. with the mini VIDAS and with an agar plate. Isolates were speciated with a multiplex PCR and typed with pulsed-field gel electrophoresis (PFGE) to evaluate relatedness of isolates collected from subsamples enriched in B+B or B-B. The number of Campylobacter-positive samples by mini VIDAS was similar (P > 0.05) to the results found with traditional plating media for naturally contaminated broiler meat, regardless of whether the comparison was made between B+B and B-B, or among different meat products (breast, tenders, and thighs). More positive samples were found at 48 h of enrichment than at 24 h of enrichment (P < 0.05). A Campylobacter jejuni:Campylobacter coli ratio of 4:1 was found in this study. Most of the isolates from both subsamples (B+B and B-B) were similar or identical by PFGE analysis, except for a few samples in which the PFGE profiles of the isolates from the subsamples were different. Mini VIDAS allowed for the detection of Campylobacter spp. within 48 h after enrichment. However, the sensitivity is similar to plate media, and retail broiler samples need to be enriched for 48 h to avoid false negatives.

Document Type: Research article

Affiliations: 1: Department of Poultry Science, 260 Lem Morrison Drive, Auburn University, Auburn, Alabama 36849, USA 2: Department of Poultry Science, 260 Lem Morrison Drive, Auburn University, Auburn, Alabama 36849, USA, Department of Biological Sciences, Alabama State University, 1627 Hall Street, Montgomery, AL 36104, USA;, Email: oaoyarzabal@gmail.com

Publication date: 2009-11-01

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