Rapid impedance detection of salmonellas in confectionery using modified LICNR broth

A commercially available broth, with the addition of inhibitors, was used for the rapid impediometric detection of salmonellas in confectionery. Pre-enrichment in skimmed milk was followed by lysine-iron-cystine-neutral red broth in a Bactometer 123 system. Results were obtained 3 d earlier than is possible with conventional microbiological tests. Some false positives were obtained predominantly with Citrobacter freundii, but this problem is also frequently encountered with traditional methods. Organisms responsible for false positives may be isolated and identified more rapidly than is possible by conventional methods.