Simple and rapid detection of Campylobacter spp. in naturally contaminated chicken-meat samples by combination of a two-step enrichment method with an immunochromatographic assay

International Journal of Food Microbiology
K KawatsuY Kumeda

Abstract

A simple and rapid method to detect Campylobacter spp. in chicken-meat samples was established. This method consisted of a combination of a two-step enrichment method with a commercially available immunochromatographic assay, named NH Immunochromato Campylobacter (NH IC Campy, Nippon Meat Packers, Ibaraki, Japan), which is able to detect Campylobacter antigen in an enrichment culture within 15 min. The enrichment method did not require much blood or a particular system of generating a microaerobic atmosphere, in contrast to the standard method of enriching Campylobacter spp. in chicken-meat samples. The sensitivity of a combination of the two-step enrichment method with NH IC Campy for detection of non- and freeze-stressed Campylobacter spp. in spiked chicken meat was determined using bacterial cells of Campylobacter jejuni and Campylobacter coli. The detection sensitivities for non-stressed C. jejuni and C. coli were found to range from 5.5 to 1.3x10(1) CFU per 25 g of chicken meat, and those for freeze-stressed C. jejuni and C. coli were found to range from 9.2x10(1) to 1.5x10(2) CFU per 25 g of chicken meat. When a total of 68 chicken-meat samples were tested, the combination method determined that 61 samples were positive f...Continue Reading

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Citations

Jul 17, 2012·Diagnostic Microbiology and Infectious Disease·Katrin Gaardbo KuhnKaren A Krogfelt

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