Development of a PCR microplate-capture hybridization method for simple, fast and sensitive detection ofSalmonellaserovars in food
| Autor: | Marisa Manzano, GA Botta, Giuseppe Comi, Carlo Cantoni, Corrado Pipan, Luca Simone Cocolin, G. Astori |
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| Rok vydání: | 1998 |
| Předmět: |
Salmonella
DNA Complementary Biotin Biology medicine.disease_cause polymerase chain reaction (PCR) microtitre plates hybridization Polymerase Chain Reaction Sensitivity and Specificity law.invention law medicine Digital polymerase chain reaction Molecular Biology Polymerase chain reaction Southern blot Hybridization probe Inverse polymerase chain reaction Nucleic Acid Hybridization Reproducibility of Results Cell Biology Molecular biology Blotting Southern Real-time polymerase chain reaction Agarose gel electrophoresis Food Microbiology Streptavidin |
| Zdroj: | Molecular and Cellular Probes. 12:227-234 |
| ISSN: | 0890-8508 |
| DOI: | 10.1006/mcpr.1998.0176 |
| Popis: | The authors have developed an easy and rapid detection and identification system for Salmonella spp. in food. The gene inv A was selected as the target sequence. Oligonucleotides derived from conserved regions of this gene were able to exclusively prime the amplification of a 389 bp fragment when Salmonella spp. DNA was used as the template. An internal Salmonella spp. specific DNA probe was used for confirmation of the amplified polymerase chain reaction (PCR) product, by Southern blot or microplate-capture hybridization assay. In this fashion the sensitivity of the method was increased 100-fold (4·5 fg total DNA). To validate the method, a total of 75 food samples was tested. The PCR-microplate capture hybridization assay is easy to perform and much faster than traditional detection methods for Salmonella spp. in food. Hybridization in microtitre plates is more readily observed than in Southern blot and is more sensitive than conventional agarose gel electrophoresis. |
| Databáze: | OpenAIRE |
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