The AOAC Research Institute (AOAC-RI), a subsidiary of AOAC International in Rockville, Md., has granted a method extension for the DuPont BAX System real-time PCR assays for Listeria to include validation of a new proprietary enrichment media. This method can return Listeria results in just 22 hours for some matrices, one of the fastest time-to-results available for the pathogen in the food safety industry today.
The AOAC-RI method allows customers to perform a single-stage, 20-26 hour enrichment (sample-dependent) in FoodChek Actero Listeria Enrichment Media, followed by rapid real-time processing with the DuPont BAX System. The extension includes detection of both Listeria species (AOAC-RI Performance Tested MethodSM #081401) and L. monocytogenes (AOAC-RI Performance Tested MethodSM #121402) and has been tested in frankfurters, shrimp, smoked salmon, spinach and queso fresco, as well as on stainless steel, plastic and sealed concrete surfaces.