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• W2159739018 endingPage "3461" @default.
• W2159739018 startingPage "3456" @default.
• W2159739018 abstract "ABSTRACT The objective of this study was to develop a rapid, reproducible, and robust method for detecting Salmonella enterica serotype Enteritidis in poultry samples. First, for the extraction and purification of DNA from the preenrichment culture, four methods (boiling, alkaline lysis, Nucleospin, and Dynabeads DNA Direct System I) were compared. The most effective method was then combined with a real-time PCR method based on the double-stranded DNA binding dye SYBR Green I used with the ABI Prism 7700 system. The specificity of the reaction was determined by the melting temperature ( T m ) of the amplicon obtained. The experiments were conducted both on samples of chicken experimentally contaminated with serotype Enteritidis and on commercially available poultry samples, which were also used for comparisons with the standard cultural method (i.e., ISO 6579/2001). The results of comparisons among the four DNA extraction methods showed significant differences except for the results from the boiling and Nucleospin methods (the two methods that produced the lowest threshold cycles). Boiling was selected as the preferred extraction method because it is the simplest and most rapid. This method was then combined with SYBR Green I real-time PCR, using primers SEFA-1 and SEFA-2. The specificity of the reaction was confirmed by the T m , which was consistently specific for the amplicon obtained; the mean peak T m obtained with curves specific for serotype Enteritidis was 82.56 ± 0.22°C. The standard curve constructed using the mean threshold cycle and various concentrations of serotype Enteritidis (ranging from 10 3 to 10 8 CFU/ml) showed good linearity ( R 2 = 0.9767) and a sensitivity limit of less than 10 3 CFU/ml. The results of this study demonstrate that the SYBR Green I real-time PCR constitutes an effective and easy-to-perform method for detecting serotype Enteritidis in poultry samples." @default.
• W2159739018 created "2016-06-24" @default.
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• W2159739018 date "2003-06-01" @default.
• W2159739018 modified "2023-10-07" @default.
• W2159739018 title "Evaluation of DNA Extraction Methods for Use in Combination with SYBR Green I Real-Time PCR To Detect <i>Salmonella enterica</i> Serotype Enteritidis in Poultry" @default.
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• W2159739018 doi "https://doi.org/10.1128/aem.69.6.3456-3461.2003" @default.
• W2159739018 hasPubMedCentralId "https://www.ncbi.nlm.nih.gov/pmc/articles/161507" @default.
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