Chromocult(R) Coliform Agar ES

Descrição detalhada : Chromocult(R) Coliform Agar ES is a selective and differential chromogenic culture medium intended for use in microbiology laboratories analyzing food and animal feeds. The modified Chromocult(R) Coliform agar with enhanced selectivity allows the simultaneous detection of coliforms and E. coli in samples with high bacterial bioburden. A combination of suitable peptones and buffering with MOPS encourages rapid growth of coliforms and optimum transformation of the chromogenic substrates. The bile salts and propionate inhibit the growth of Gram-positive and Gram-negative accompanying flora. Simultaneous detection of total coliforms and E. coli is achieved by using a combination of two chromogenic substrates. The substrate Salmon-beta-D-GAL is cleaved by beta-D-galactosidase, characteristic for coliforms, resulting in a salmon to red coloration of coliform colonies. The substrate X-beta-D-glucuronide is cleaved via beta-D-glucuronidase, characteristic for E. coli, causing positive colonies to turn blue. As E. coli cleaves Salmon-beta-D-GAL as well as X-beta-D-glucuronide, its colonies turn dark violet and are easily differentiated from the other coliforms, these being salmon-red.
Sinónimos : Coliform Agar; Coliform agar ES, CCA ES
Armazenamento : 15-25C
Embalagem : 1X1EA