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Buffered Listeria Enrichment Broth (B02-131)

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Product Description:
Buffered Listeria Enrichment Broth
Buffered Listeria Enrichment Broth is used for the selective enrichment of Listeria spp. A modification of Listeria Enrichment Broth developed by Lovett, this medium was designed to improve the enrichment of Listeria spp. with the addition of Disodium Phosphate to increase the buffering capacity. Listeria spp., found in soil, sewage, and river water in addition to unprocessed foods, are Gram- positive, short and motile rods. Cycloheximide in this formulation inhibits saprophytic fungi, while Nalidixic Acid is used to suppress the growth of Gram-negative organisms. Casein Digest of Peptone, Soy Peptone and Yeast Extract supply necessary growth nutrients such as amino acids, peptides, and other nitrogenous sources. Dextrose is an energy source for bacterial growth. Monopotassium, Dipotassium and Disodium Phosphates act as pH buffers, thereby allowing the growth of pH-sensitive bacteria.