Development of an improved protocol for the isolation and detection of Enterobacter sakazakii (Cronobacter) from powdered infant formula

J Food Prot. 2010 Jun;73(6):1016-22. doi: 10.4315/0362-028x-73.6.1016.

Abstract

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.

MeSH terms

  • Consumer Product Safety
  • Cronobacter sakazakii / isolation & purification*
  • DNA, Bacterial / analysis*
  • Food Contamination / analysis*
  • Humans
  • Infant
  • Infant Food / microbiology*
  • Infant Formula
  • Infant, Newborn
  • Polymerase Chain Reaction / methods*

Substances

  • DNA, Bacterial