Lab M's Fraser Brothplus (ISO) and Half Fraser Brothplus (ISO) give improved results for the isolation of Listeria spp. with traditional and Elisa methods.
Blending acriflavine and nalidixic acid components into the base powder and adding ferric ammonium citrate (X211) to the tempered broth after autoclaving achieves greater selectivity with pure cultures and food samples.
Fraser Broth is a secondary enrichment broth for the isolation of Listeria spp.
It was developed as a modification of UVM medium made according to ISO 11290.
The evaluation, carried out by a leading Elisa manufacturer, showed that the performance of the company's own Elisa kit was enhanced by the use of the new Lab M media without the addition of FAC.
According to the UK's Food Standards Agency, the reported number of illnesses from Listeria in the UK has doubled since 2000, particularly in people older than 60.
