Marshfield Food Safety has completed an evaluation of the Resolution Microbial Genotyping System from PathoGenetix.
The microbiology and chemistry contract testing laboratory held a three-week evaluation testing the speed, utility and usability of the instrument, assays and database for food industry applications.
The system isolates and analyzes microbial DNA from enriched food and clinical samples, without a pure culture isolate, to strain type target bacteria in five hours.
Marshfield tested 77 Salmonella isolates sourced from its internal collection of “tough-to-type” strains and some naturally contaminated food samples and compared the molecular serotyping capability to traditional serological analysis.
Roy Radcliff, Marshfield Food Safety CEO, said the system could become a ‘very powerful tool’ for the food industry.
“The robustness and the ability of the instrument to identify multiple strains in a sample or to identify strains from a secondary enrichment rather than a pure isolate make it very appealing.”