Collaborative study of the international office of cocoa, chocolate, and sugar confectionery on the use of motility enrichment for Salmonella detection in cocoa and chocolate

A comparative collaborative study was performed in 15 laboratories to validate the use of motility enrichment on Modified Semisolid Rappaport-Vassiliadis (MSRV) medium for Salmonella detection in cocoa and chocolate products. The use of MSRV was compared with a cultural procedure using Rappaport-Vas...

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Bibliographic Details
Published in:Journal of food protection 1990-08, Vol.53 (8), p.659-664
Main Authors: Smedt, J.M. de (Jacobs Suchard, Herentals, Belgium), Bolderdijk, R
Format: Article
Language:English
Subjects:
ALIMENTOS
CHOCOLAT
CHOCOLATE
COCOA BEANS
CONTAMINACION
CONTAMINATION
EXPERIMENTATION EN LABORATOIRE
EXPERIMENTOS EN LABORATORIO
FEVE DE CACAO
FOODS
LABORATORY EXPERIMENTS
METHODE
METHODS
METODOS
PRODUIT ALIMENTAIRE
SALMONELLA
SEMILLA DE CACAO
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Summary:A comparative collaborative study was performed in 15 laboratories to validate the use of motility enrichment on Modified Semisolid Rappaport-Vassiliadis (MSRV) medium for Salmonella detection in cocoa and chocolate products. The use of MSRV was compared with a cultural procedure using Rappaport-Vassiliadis broth and selenite cystine broth as selective enrichments. Artificially contaminated milk chocolate samples as well as Salmonella reference capsules added to Salmonella-free cocoa and milk chocolate were used as test samples. Motility enrichment produced 347 positive test results compared to 320 for the cultural procedure. For samples containing a lactose positive Salmonella strain, motility enrichment was far more productive than the cultural procedure, while for the other samples no significant statistical difference in the productivity of both procedures was observed at the 5% level.
ISSN:0362-028X
1944-9097
DOI:10.4315/0362-028X-53.8.659