Oxoid has introduced a new, highly selective culture medium to the Oxoid range of products for the detection of Salmonella species
Oxoid Xylose Lactose Tergitol-4 (XLT-4) Agar is said to be ideal for the isolation and identification of salmonellae from clinical, food and environmental samples.
Salmonellosis is a major problem around the world and has increased in incidence on many continents in the last 25 years.
The diagnosis of salmonellosis is often complicated by the presence of background flora and other Enterobacteriaceae on an agar plate.
The presence of the selective agent, Tergitol-4, in XLT-4 Agar inhibits many of the background flora that can be problematic on other plating media.
In addition, chemical and pH changes within the medium allow Salmonella spp (black colonies) to be differentiated from organisms, such as E coli (yellow colonies) and Shigella spp (red colonies).
The enhanced selectivity of XLT-4 Agar saves time, by reducing the need for further identification procedures, and results in fewer false presumptive positive colonies when compared to other Salmonella plating media.
