New plate medium for facilitated differentiation of Salmonella spp. from Proteus spp. and other enteric bacteria.
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.
Rambach
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Laboratoires Technogram, Paris, France.
D000818:Animals; D003470:Culture Media; D004755:Enterobacteriaceae / Q000302:isolation & purification*; D005189:False Positive Reactions; D005516:Food Microbiology; D011237:Predictive Value of Tests; D011409:Propylene Glycols; D011511:Proteus / Q000302:isolation & purification*; D012475:Salmonella / Q000302:isolation & purification*
D003470:Culture Media; D011409:Propylene Glycols