RAPID'L.mono Medium is a selective chromogenic medium for the direct detection and enumeration of Listeria monocytogenes and Listeria spp. in food and environmental samples. Reading and identification of L. monocytogenes is easy due to the chromogenic principle (PI-PLC activity) of the medium and the fermentation of a sugar (xylose).
L. monocytogenes (PIPLC+/xylose-) forms blue colonies, L. ivanovii (PIPLC+/xylose+) forms blue colonies with a yellow halo and other Listeria spp. (PIPLC-/xylose+ or -) form white colonies with or without a yellow halo.
The system is fast, with L. monocytogenes detection 24 h after enrichment, Listeria spp. detection 24 and 48 h after enrichment, L. monocytogenes enumeration in 24 h without confirmation and L. monocytogenes confirmation in 24 h after using the iQ-Check Listeria monocytogenes II Kit.
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