Buffered Listeria Enrichment Broth
Starting at $72.18
|Acumedia||BD / Difco||BD / BBL||Oxoid||Merck|
|Buff Listeria Enrich Broth (7579)||220530*||N/A||N/A||N/A|
* Similar formula, but not exact.
Buffered Listeria Enrichment Broth is used for selective enrichment of Listeria spp.
Product Summary and Explanation
Listeria monocytogenes, described first in 1926 by Murray, Webb, and Swann, is an extensive problem inpublic health and food industries. This organism has the ability to cause human illness and death, particularly in immunocompromised individuals and pregnant women. Epidemiological evidence from outbreaks oflisteriosis has indicated that the principle route of transmission is via consumption of foodstuffs contaminated with Listeria monocytogenes. Implicated vehicles of transmission include turkey, frankfurters, coleslaw,pasteurized milk, Mexican style cheese, and pate´. Listeria spp. are ubiquitous in nature, being present in awide range of unprocessed foods as well as in soil, sewage, and river water.
Buffered Listeria Enrichment Broth, a modification of the formula by Lovett et al., was developed aftersubsequent work concluded that enrichment properties can be improved by increasing the buffering capacity of the medium with the addition of Disodium Phosphate. Listeria spp. grow over a pH range of 5.0 - 9.6, and survive in food products with pH levels outside these parameters. Listeria spp. are microaerophilic, Gram-positive, asporogenous, non-encapsulated, non-branching, short, motile rods. Motility is pronounced at 20°C. Identification of Listeria is based on successful isolation of the organism, biochemical characterization, and serological confirmation.