Category:

CHROMagar™ Listeria

For detection and numeration ofListeria monocytogenes

Order References

Please use these references when
contacting your local distributor:

5000 mL Pack ………. LM852

Description

Colonies Appearance 

CHROMagar Listeria monocytogenes

L. monocytogenes

blue, diameter less than 3 mm, regular and white halo

Performance

Listeria monocytogenesis a widespread bacteria, present in the soil, sewage or faecal matter. Its ability to form listerial biofilms on contact surfaces makes it difficult to eliminate. This pathogen can cause serious food poisoning and is therefore frequently a microbial Q.C. target in food processing facilities to avoid food contamination. Contamination can occur at all steps of the food manufacturing chain from raw materials to place of consumption.



CHROMagar™ has developed a rapid method for the detection ofL. monocytogenesin food stuff, comprising the following simple steps (1) enrichement in half frazer broth for 24h, (2) isolation in CHROMagar Listeria, (3) confirmation ofListeria monocytogenesspecies in CHROMagar™ Identification Listeria.

1. Clear Reading : Since L. monocytogenesand L. innocua have similar biochemical properties, they cannot be differentiated on traditional media (Palcam, Oxford). CHROMagar™ Listeria helps to easily differentiateListeria monocytogenesfrom otherListeriadirectly at the isolation step: the colonies are blue and surrounded by a white halo due to a specific phospholipase activity.

Composition

Technical Documents

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Scientific Publications