Fraser Broth Base is a liquid medium used for the selective enrichment of Listeria spp. This broth was first described by Fraser and Sperber, and is utilized with a Ferric Ammonium Citrate supplement for the rapid detection of Listeria from food and environmental samples. Tryptose, Beef Extract, and Yeast Extract provide nutrients like amino acids, peptides, carbohydrates, and vitamins for bacterial growth. Esculin is the main energy source. Sodium Chloride provides essential electrolytes and maintains osmotic equilibrium. Disodium Phosphate and Monopotassium Phosphate act as pH buffers. Lithium Chloride, Nalidixic Acid, and Acriflavine are selective agents for Listeria growth. All members of the Listeria spp. hydrolyze Esculin to 6,7-dihydroxycoumarine. This compound reacts with Ferric Ammonium Citrate, thus resulting in the blackening of the medium.
Listeria Demi-Fraser Broth is a selective enrichment medium designed for the detection and enumeration of Listeria monocytogenes and other Listeria species. This culture media complies with ISO 11290...
A modification of Fraser Broth Base, this medium was developed by Fraser and Sperber for the rapid detection of Listeria from food and environmental samples. The addition of Ferric Ammonium Citrate...
Chromogenic culture media for the detection of Listeria spp. and the identification of Listeria monocytogenes. Listeria Chromogenic Agar Base according to Ottaviani and Agosti (ALOA) is a selective...
Palcam Agar is used for the selective isolation and enumeration of Listeria monocytogenes from foods and environmental samples. Columbia Blood Agar Base is a general-purpose growth medium. Mannitol...
Nutrient Agar is a solid medium used for the non-selective growth of a wide variety of non-fastidious organisms. Pancreatic Digest of Gelatin and Beef Extract provide amino acids, peptides,...
