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ORIGINAL ARTICLE
Year : 2019  |  Volume : 22  |  Issue : 8  |  Page : 1083-1090

Salmonella Spp. and Shigella Spp. detection via multiplex real-time PCR and discrimination via MALDI-TOF MS in different animal raw milk samples


1 Department of Medical Microbiology, Medical Faculty, Beykent University, Istanbul, Turkey
2 Department of Genetic, Faculty of Veterinary Medicine, Harran University, Şanlıurfa, Turkey
3 Department of Food Hygiene and Technology, Faculty of Veterinary Medicine, Harran University, Şanlıurfa, Turkey
4 Department of Medical Microbiology, Istanbul Medical Faculty, Istanbul University, Istanbul, Turkey
5 Department of Medical Microbiology, Cerrahpaşa Medical Faculty, Istanbul University-Cerrahpaşa, Istanbul, Turkey

Correspondence Address:
Dr. M Demirci
Beykent University, Medical Faculty, Department of Medical Microbiology, Istanbul - 34580
Turkey
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Source of Support: None, Conflict of Interest: None


DOI: 10.4103/njcp.njcp_596_18

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Aims: The aim of this study was to provide epidemiological data about the presence of Salmonella spp. and Shigella spp. in raw milk samples collected from different animals. Methods: A total of 231 raw milk samples from 48 cows, 65 goats, 65 sheep, and 53 donkeys were studied. The ISO 6579:2002 and ISO 21567:2004 methods, antimicrobial susceptibility tests, and serotyping were performed. Species and subspecies discriminations were made via matrix-assisted laser desorption/ionization-time of flight mass spectrometry. After DNA isolation from all samples, Salmonella spp. and Shigella spp. were detected using real-time polymerase chain reaction (PCR) kits. Results: Five samples (2.16%) showed positivity out of 231 raw milk samples for Salmonella spp., and 2 (0.87%) samples were detected to be positive by multiplex real-time PCR design. Conclusion: We found that raw milk samples were not free of Salmonella spp. and Shigella spp. and need to be tested routinely to avoid public health problems. Rapid and reliable real-time PCR method can be developed and used for this purposes instead of slow bacterial culture processes.


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