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Development of an Improved Protocol for the Isolation and Detection of Enterobacter sakazakii (Cronobacter) from Powdered Infant Formula

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Enterobacter sakazakii causes severe maladies and, in some cases, is fatal among infants. Powdered infant formula (PIF) contaminated with E. sakazakii has been documented as a potential cause of several outbreaks involving infants. This study describes the development of a method for the isolation and detection of E. sakazakii from PIF. It combines Taqman real-time PCR, Brilliance E. sakazakii and R&F chromogenic agars, and RAPID ID 32E biochemical tests. This method provides an expedient analysis within 1 to 2 days depending on the amount and stress status of E. sakazakii organisms and competing microorganisms in PIF. The real-time PCR has bifunctional applications, including both screening and culture confirmation of E. sakazakii.

Document Type: Research Article

Affiliations: U.S. Food and Drug Administration, 5100 Paint Branch Parkway HFS-711, College Park, Maryland 20740, USA

Publication date: June 1, 2010

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    The Journal of Food Protection (JFP) is a refereed monthly publication. Each issue contains scientific research and authoritative review articles reporting on a variety of topics in food science pertaining to food safety and quality. The Journal is internationally recognized as the leading publication in the field of food microbiology with a readership exceeding 11,000 scientists from 70 countries. The Journal of Food Protection is indexed in Index Medicus, Current Contents, BIOSIS, PubMed, Medline, and many others.

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