RAPID'Listeria spp. is a selective chromogenic plating medium for the isolation and presumptive identification of all species of Listeria. The cultural properties of the medium are based on a balance of carefully selected growth-promoting nutrients, enzymatic enhancers and a mixture of selective agents. The presumptive chromogenic identification system relies on a chromogenic substrate that provides the detection of ß-D-glucosidase activity, an enzyme common to all species of Listeria. Hydrolysis of the substrate leads to the formation of a colored precipitate, with all the presumptive Listeria positive colonies turning blue. Combined with this principle, RAPID'Listeria spp. uses an original selective mixture which inhibits most background flora. The few non-Listeria bacteria that do grow on the agar will produce colorless colonies.
- Economical solution
- Validated high specificity and sensitivity
- Easy-to-read chromogenic reaction
- All Listeria species are blue colonies
The RAPID'Listeria spp. method is also AFNOR-ISO 16140 validated for the detection of Listeria spp. in environmental and food samples under BRD 07/12 - 12/06.
|RAPID'Listeria spp. is available in two formats: |
|Product Code |
|1) ready-to-use plates (pack of 20) ||code # 356-3950 |
|2) dehydrated media 500g base, supplements 1 and 2 required ||code # 56-4744 |
|supplement 1 - ten vials ||code # 356-4745 |
|supplement 2 - ten vials ||code # 356-4746 |