Recombinant plasmid-based quantitative Real-Time PCR analysis of Salmonella enterica serotypes and its application to milk samples
Küçük Resim Yok
Tarih
2016
Dergi Başlığı
Dergi ISSN
Cilt Başlığı
Yayıncı
Elsevier
Erişim Hakkı
info:eu-repo/semantics/closedAccess
Özet
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. (C) 2016 Elsevier B.V. All rights reserved.
Açıklama
Anahtar Kelimeler
Salmonella, invA, ttrRSBC, Recombinant plasmids, Real-Time PCR, Milk
Kaynak
Journal Of Microbiological Methods
WoS Q Değeri
Q3
Scopus Q Değeri
Q3
Cilt
122
