LOOP-MEDIATED ISOTHERMAL AMPLIFICATION (LAMP) FOR THE DETECTION OF SALMONELLA SPP. ISOLATED FROM DIFFERENT FOOD TYPES

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August – September 2012, vol. 2, no. 1
pages: 152-161
Article type: Microbiology of Microbiology
Abstract: The objective of this study was the application and evaluation of a loop-mediated isothermal amplification (LAMP) method for the detection of Salmonella spp. strains isolated from food samples. Salmonella specific invA gene sequences (50 strains, 15 serotypes) were amplified at 65oC in 60 min. All of the strains of Salmonella subsp. Enterica were shown to be positive using the LAMP reaction assay, whereas, all other bacteria, virus and yeasts tested in this study were negative. LAMP products could be visually detected under day light or ultraviolet light, while the specific amplification of the DNA of Salmonella strains generated ladder-like pattern bands on agarose gel. LAMP is suitable for the sensitive, rapid, and inexpensive detection of Salmonella spp. in food analytical laboratories.
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