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Recombinant plasmid-based quantitative Real-Time PCR analysis of Salmonella enterica serotypes and its application to milk samples
Date
2016-03-01
Author
Gokduman, Kurtulus
AVŞAROĞLU ERKAN, MÜRŞİDE DİLEK
Cakiris, Aris
Ustek, Duran
Gültekin, Güzin Candan
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The aim of the current study was to develop, a new, rapid, sensitive and quantitative Salmonella detection method using a Real-Time PCR technique based on an inexpensive, easy to produce, convenient and standardized recombinant plasmid positive control. To achieve this, two recombinant plasmids were constructed as reference molecules by cloning the two most commonly used Salmonella-specific target gene regions, invA and ttrRSBC The more rapid detection enabled by the developed method (21 h) compared to the traditional culture method (90 h) allows the quantitative evaluation of Salmonella (quantification limits of 10(1) CFU/ml and 10(0) CFU/ml for the invA target and the ttrRSBC target, respectively), as illustrated using milk samples. Three advantages illustrated by the current study demonstrate the potential of the newly developed method to be used in routine analyses in the medical, veterinary, food and water/environmental sectors: I - The method provides fast analyses including the simultaneous detection and determination of correct pathogen counts; II - The method is applicable to challenging samples, such as milk; III - The method's positive controls (recombinant plasmids) are reproducible in large quantities without the need to construct new calibration curves.
Subject Keywords
Microbiology (medical)
,
Molecular Biology
,
Microbiology
URI
https://hdl.handle.net/11511/41296
Journal
JOURNAL OF MICROBIOLOGICAL METHODS
DOI
https://doi.org/10.1016/j.mimet.2016.01.008
Collections
Department of Food Engineering, Article
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BibTeX
K. Gokduman, M. D. AVŞAROĞLU ERKAN, A. Cakiris, D. Ustek, and G. C. Gültekin, “Recombinant plasmid-based quantitative Real-Time PCR analysis of Salmonella enterica serotypes and its application to milk samples,”
JOURNAL OF MICROBIOLOGICAL METHODS
, vol. 122, pp. 50–58, 2016, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/41296.