GranuCult(R) FRASER broth (base)

Descrição detalhada : GranuCult(R) FRASER broth (base) has high nutrient content and a large buffering capacity that creates optimum growth conditions for Listeria spp. Lithium chloride, nalidixic acid, and acriflavine hydrochloride inhibit the growth of accompanying bacteria. The addition of aesculin and ammonium iron (III) citrate facilitates the detection of the beta-D-glucosidase activity by forming a black complex of aesculin with iron (III) ions. A black coloration can develop during incubation, but this reaction is not exclusive to Listeria spp. and cultures that show no blackening cannot be assumed to be free of Listeria spp. Hence, every primary and secondary enrichment in Fraser broth must be sub-cultured on selective plating media. From GranuCult(R) FRASER Broth (Base), the primary selective enrichment Half Fraser broth, as well as the secondary enrichment Fraser broth can be prepared by addition of Ammonium iron (III) citrate supplement (1.00092) and Selective Supplement (1.00093).
Sinónimos : Listeria Selective Enrichment Broth; Full FRASER broth
Armazenamento : 15-25C
Embalagem : 1X1EA