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http://dx.doi.org/10.3746/jkfn.2010.39.5.764

Performance Comparison of 3 Different Isolation Media of Cronobacter sakazakii  

Kim, Hyun-Jung (Food Safety Team, Korea Food Research Institute)
Koo, Min-Seon (Food Safety Team, Korea Food Research Institute)
Oh, Se-Wook (Dept. of Food and Nutrition, Kookmin University)
Publication Information
Journal of the Korean Society of Food Science and Nutrition / v.39, no.5, 2010 , pp. 764-768 More about this Journal
Abstract
Three different isolation media for Cronobacter sakazakii have been recommended by Korea Food and Drug Administration from 2007. Performance comparison test was carried out between recommended Cronobacter sakazakii isolation medium. Chromogenic Enterobacter sakazakii agar (CESA) and Enterobacter sakazakii agar (ESA) produce more distinctive colonies having characteristic colors and appearance than Violet red bile glucose agar (VRBGA). The sensitivity and specificity of 3 different isolation media was checked. All 3 tested media showed 100% sensitivity when tested with 30 different Cronobacter sakazakii. The CESA and ESA showed 100% specificity when tested with Enterobacteriaceae except Cronobacter sakazakii, However, VRBGA did not show any specificity, showing inadequate selectivity compared to applicable Cronobacter sakazakii isolation medium. Artificially inoculated Cronobacter sakazakii to milk powder was easily recovered with 3 different isolation media and they all showed almost the same recovery activity.
Keywords
Cronobacter sakazakii; isolation medium; comparison; sensitivity; specificity;
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