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Comparison of Three Protocols for the Isolation of Arcobacter from Poultry

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The microaerophilic bacterium Arcobacter has received increasing attention in recent years regarding its presence in food products. There exist a limited number of methods for the detection of this microorganism, with currently available methods being cumbersome to perform, time consuming, and limited in specificity. The objective of this study was to develop a selective enrichment broth to isolate accurately three Arcobacter spp. from concentrated chicken microflora by comparing the efficacy of various selective and growth-promoting additives in order. This newly developed enrichment broth was incorporated into an isolation protocol using a previously developed plating medium, and this new protocol was compared with two existing methods for the isolation of Arcobacter from poultry. Method 1 consisted of enrichment in Ellinghausen–McCullough–Johnson–Harris Polysorbate 80 broth followed by plating on cefoperazone-vancomycin–amphotericin B medium. Method 2 consisted of enrichment in Arcobacter selective broth and plating onto Arcobacter selective medium. Method 3 (the JM method), used a newly developed enrichment broth followed by plating on a previously described JM agar. The JM method isolated Arcobacter strains in 42 out of 50 broiler chicken samples, while methods 1 and 2 detected the organism in only 24 and 15 out of 50 samples, respectively.

Document Type: Research Article

Affiliations: Institute of Food Science and Engineering, Center for Food Safety, Department of Animal Science, Texas A&M University, College Station, Texas 77843-2471, USA

Publication date: June 1, 1999

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