alexa Detection of invA Gene in Isolated Salmonella from Mark
ISSN: 2157-7110

Journal of Food Processing & Technology
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Research Article

Detection of invA Gene in Isolated Salmonella from Marketed Poultry Meat by PCR Assay

Indu Sharma* and Kashmiri Das
Microbiology Department, Assam University, Silchar-788011, India
Corresponding Author : Indu Sharma
Microbiology department, Assam University,Silchar-788011, India
Tel: +919435724517
E-mail: [email protected]
Received January 13, 2016; Accepted February 03, 2016; Published February 09, 2016
Citation: Sharma I, Das K (2016) Detection of invA Gene in Isolated Salmonella from Marketed Poultry Meat by PCR Assay. J Food Process Technol 7:564. doi:10.4172/2157-7110.1000564
Copyright: © 2016 Sharma I, et al. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.


Background: The aims of the current study were to detect the invA gene from chicken samples meant for human consumption from N.E India. Materials and method: After Salmonella sp. identification with culture method, PCR assay were developed for detection of pathogenic genes and antibiotic resistance genes of Salmonella sp. Results: Salmonella was detected in 80 samples of poultry carcasses from main poultry markets in Silchar, Assam, N.E India. A total of 40 Salmonella isolates were found in chicken samples (43%) and the isolates had a growth on brilliant green agar and De-oxycholate citrate agar medium, were oxidase negative and catalase positive and exhibited no changes in the colour of the medium with 100% motility. All the strains were subjected to Salmonella-specific gene (invA) and were confirmed as Salmonella positive by the predicted product of 284-bp DNA fragment. Salmonella isolates recovered from poultry samples were tested for antibiotic susceptibility against 5 selected antibiotics of which ciprofloxacin was observed to be highly susceptible (77.5%). Conclusion: Our results recommended the use of PCR for detection of pathogenic genes of bacteria as a safe, rapid, and accurate method in laboratories. High levels of Salmonellosis infections in poultry farms has raised an eye amongst the poultry management personnel’s to consider various effective control programs to prevent the economic loss resulting from mortality and spreading of infection.


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