Bile Esculin Agar
Manufacturer: Neogen Inc.
Starting at from $196.88 Sale $187.03
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Bile Esculin Agar
Description
Acumedia | BD / Difco | BD / BBL | Oxoid | Merck |
Bile Esculin Agar (7249) | N/A | 299068 | CM0888 | N/A |
Intended Use
Bile Esculin Agar is used for the selective isolation and differentiation of group D streptococci.
Product Summary and Explanation
Bile Esculin Agar is based on the formulation described by Swan and further evaluated by Facklam and Moody. Rochaix first noted the value of esculin hydrolysis in the identification of enterococcci. Meyer andSchonfeld added bile to the esculin medium and demonstrated 61 of 62 enterococci strains were able to grow and hydrolyze esculin, while other streptococci could not.
Molecular taxonomic studies of the genus Streptococcus have placed enterococci, previously described as group D streptococci, in the genus Enterococcus. The ability to hydrolyze esculin in the presence of bile is acharacteristic of enterococci and group D streptococci. Swan compared the use of an esculin medium containing 40% bile salts with the Lancefield serological method of grouping, and reported that a positivereaction on the bile esculin medium correlated with a serological group D precipitin reaction. Facklam and Moody found that the bile esculin test provided a reliable means of identifying group D streptococci and differentiating them from non-group D streptococci.
Bile Esculin Agar is in standard procedures for the microbiological examination of food products.