New plate medium for facilitated differentiation of Salmonella spp. from Proteus spp. and other enteric bacteria

Author:

Rambach A1

Affiliation:

1. Laboratoires Technogram, Paris, France.

Abstract

A new agar medium for the differentiation of Salmonella spp. from other members of the family Enterobacteriaceae is described. This medium exploits a novel phenotypic characteristic of Salmonella spp.: the formation of acid from propylene glycol. This characteristic may be used in combination with a chromogenic indicator of beta-galactosidase to differentiate Salmonella spp. from Proteus spp. and the other members of the Enterobacteriaceae. Desoxycholate may be included in the plate medium as an inhibitor of gram-positive organisms. Non-typhi Salmonella spp. yield distinct, bright red colonies on this medium, allowing facilitated identification and unambiguous differentiation from Proteus spp.

Publisher

American Society for Microbiology

Subject

Ecology,Applied Microbiology and Biotechnology,Food Science,Biotechnology

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