Oxford Listeria Agar Base is used with antimicrobics for the selective isolation of Listeria spp. in a laboratory setting. Oxford Listeria Agar Base is not intended for use in the diagnosis of disease or other conditions in humans.
Listeria monocytogenes, described first in 1926 by Murray, Webb, and Swann, is an extensive problem food industries. Epidemiological evidence from outbreaks of listeriosis has indicated that the principle route of transmission is via the consumption of foodstuffs contaminated with Listeria monocytogenes. Implicated vehicles of transmission included turkey frankfurters, coleslaw, pasteurized milk, Mexican style cheese, and pate. Listeria spp. are ubiquitous in nature, being present in a wide range of unprocessed foods as well as in soil, sewage, and river water.
Oxford Listeria Agar Base is prepared according to the formulation of Curtis et al. Listeria spp. grow over a pH range of 5.0 – 9.6, and survive in food products with pH levels outside these parameters.
|Columbia Blood Agar Base||39 g|
|Ferric Ammonium Citrate||0.5 g|
|Lithium Chloride||15 g|
Final pH: 7.0 ± 0.2 at 25°C
Formula may be adjusted and/or supplemented as required to meet performance specifications.
Antimicrobic Supplments / Oxford Listeria Supplement
|Colistin Sulfate||20 mg|
Modified Oxford Listeria Supplement
|Colistin Sulfate||10 mg|
Oxford Medium Base
Aseptically add a filtered sterilized aqueous solution of 5 mg acriflavin, 2 mg cefotetan, 20 mg colistin sulfate, 400 mg cycloheximide*, and 10 mg phosphomycin. Note: *Natamycin may be used in place of cycloheximide at 25 mg.
Modified Oxford Medium
Aseptically add a filtered sterilized aqueous solution of 10 mg colistin sulfate and 20 mg moxalactam.
|Product #||Product Description|
|7428A||Oxford Listeria Agar Base, 500 g|
|7428T||Oxford Listeria Agar Base, 5 kg|