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J Appl Microbiol. 1998 Oct;85(4):673-7.

Use of polymerase chain reaction and restriction enzyme analysis to directly detect and identify Salmonella typhimurium in food.

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Dipartimento di Scienze degli Alimenti, Facoltà di Agraria, Università di Udine, Italy.


A primer set of oligonucleotides (Salm 3 and Salm 4) from the invA gene of Salmonellae has been evaluated for the specific detection of Salmonella spp. by the polymerase chain reaction (PCR). This primer set amplified 33 Salmonella serovars but did not amplify 16 non-Salmonella bacteria. Moreover, after PCR amplification, it was possible to identify Salm. typhimurium by restriction enzyme analysis. The PCR-RE method developed could represent a helpful tool for detecting Salmonella spp., and for directly and rapidly identifying Salm. typhimurium in food.

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