Description
Demi-Fraser Broth is a selective secondary enrichment medium for detecting Listeria species.
The formulation includes selective components and an aesculin-ferric ammonium citrate system. Growth of aesculin-positive Listeria may produce blackening in the broth.
Enrichment cultures are incubated and subcultured onto the Listeria selective agars stated in the PDF. The technical sheet cites ISO 11290-1:2017 and ISO 11290-2:2017.
