Rambach-Medium

For the detection of enteric bacteria, including coliforms and Salmonella spp. Sodium desoxycholate inhibits the accompanying Grampositive flora. This medium enables Salmonella spp. to be differentiated unambiguously from other bacteria. Salmonella spp. form a characteristic red color. In order to differentiate coliforms from Salmonellae, the medium contains a chromogene indicating the presence of βgalactosidase splitting, a characteristic of coliforms. Coliform microorganisms grow as blue-green or blue-violet colonies. Other Enterobacteriaceae and Gram-negative bacteria, such as Proteus, Pseudomonas, Shigella, S. typhi, and S. parathyphi A, grow as colorless-yellow colonies.