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PCR Detection of Microbial Pathogens pp 275–287Cite as

Detection of Salmonella spp.

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Part of the book series: Methods in Molecular Biology™ ((MIMB,volume 216))

Abstract

Salmonella is still recognized as a major zoonotic pathogen for animals and humans (1). In many countries, it is the leading cause of all food-borne outbreaks and infections (2,3). Conventional cultural methods for the detection of Salmonella spp. in clinical human or animal material, food, feeding stuff or the environment require nonselective and selective incubation steps resulting in a 4 to 6 d isolation procedure (4,5). A more rapid detection of Salmonella spp. can be expected by the application of the polymerase chain reaction (PCR). Detection of Salmonella from food by PCR can be achieved within 24 h. Generally, the procedure includes (i) a pre-enrichment step in a nonselective medium to allow recovery of damaged cells and multiplication of the target organism; (ii) nucleic acid extraction from the culture; (iii) in vitro amplification of Salmonella spp. specific nucleic acid target DNA; and (iv) detection of the PCR product by gel electrophoresis and/or hybridization techniques. Several nonselective media for pre-enrichment have been developed for various food matrices, but buffered peptone water is most commonly used and recommended in the ISO 6579 standard on Microbiology of Food and Animal Feeding Stuffs-Horizontal Method for the Detection of Salmonella (6) as the medium of choice for pre-enrichment. Since many substances occurring in food can inhibit the thermostable DNA polymerase (7,8), the selection of a DNA extraction method depends on the food matrix.

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Author information

Authors and Affiliations

  1. National Salmonella Reference Laboratory, Federal Institute for Health Protection of Consumers and Veterinary Medicine (BgVV), Berlin, Germany

    Burkhard Malorny & Reiner Helmuth

Authors
  1. Burkhard Malorny
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  2. Reiner Helmuth
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Editor information

Editors and Affiliations

  1. Federal Institute for Health Protection of Consumers and Veterinary Medicine (BgVV), Jena, Germany

    Konrad Sachse (Dr. Rer. Nat.) (Dr. Rer. Nat.)

  2. University of Bern, Bern, Switzerland

    Joachim Frey PhD

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© 2003 Humana Press Inc., Totowa, NJ

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Malorny, B., Helmuth, R. (2003). Detection of Salmonella spp.. In: Sachse, K., Frey, J. (eds) PCR Detection of Microbial Pathogens. Methods in Molecular Biology™, vol 216. Humana Press. https://doi.org/10.1385/1-59259-344-5:275

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  • DOI: https://doi.org/10.1385/1-59259-344-5:275

  • Publisher Name: Humana Press

  • Print ISBN: 978-1-58829-049-6

  • Online ISBN: 978-1-59259-344-6

  • eBook Packages: Springer Protocols

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