BioMérieux launches Listeria detection test
For food products and production environment samples
BioMérieux, an in vitro diagnostics specialist, has launched chromID Lmono, a chromogenic medium that enables the rapid enumeration, detection and presumptive identification of Listeria monocytogenes in food products and production environment samples. Both protocols are certified according to EN ISO 16140.
The chromID Lmono enumeration methods are said to reduce product release time and bring cost effectiveness and flexibility to low counts.
With chromID Lmono, the Listeria monocytogenes enumeration takes just one day for a confirmed result, whereas the ISO method requires four days, the company says.
Only one plate is necessary for the pour plate enumeration when using chromID Lmono medium in bottles. Surface enumeration is performed with one plate less than all the existing methods used for enumeration of low numbers (< 10CFU/g).
On this new media, Listeria monocytogenes gives turquoise blue colonies with no associated halo, which facilitates reading.
For the detection of L. monocytogenes, chromID Lmono gives results in one day after enrichment for both negative and confirmed positive samples. The turquoise blue colonies with no associated halo also make it easy to read highly contaminated samples.