1.01865
Readybag® Half Fraser Broth with Supplements
acc. ISO 11290, 62 g, irradiated, For the primary selective enrichment of Listeria sp.
Sinónimos:
Demi Fraser broth, Fraser broth primary enrichment, Fraser Broth, Fraser Listeria selective enrichment Broth
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Acerca de este artículo
NACRES:
NA.74
UNSPSC Code:
41106212
Servicio técnico
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Permítanos ayudarleQuality Segment
agency
APHA, ISO 11133, ISO 11290
form
medium granules (dehydrated (DCM))
manufacturer/tradename
ReadyBag®
technique(s)
microbiological culture: suitable
pH
7.0-7.4 (25 °C, 55 g/L in H2O)
solubility
55 g/L
application(s)
food and beverages
microbiology
pathogen testing
storage temp.
15-25°C
suitability
Listeria spp.
General description
Half FRASER (Demi FRASER) broth has high nutrient content and the large buffer capacity that creates optimum growth conditions for Listeria. Lithium chloride, nalidixic acid, and acriflavine hydrochloride largely inhibit the growth of accompanying bacteria. Esculin and ammonium iron (III) citrate enables the detection of the β-D-glucosidase activity by the formation of a black complex of esculetin with iron (III) ions. However, this reaction is not exclusive to Listeria sp. and hence every primary and secondary enrichment in FRASER broth has to be sub-cultured on selective plating media.
Application
Half FRASER (Demi FRASER) broth with supplements is used for the primary selective enrichment of Listeria sp. from food and animal feed as well as from environmental samples and other materials.
Legal Information
READYBAG is a registered trademark of Merck KGaA, Darmstadt, Germany
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Clase de almacenamiento
11 - Combustible Solids
flash_point_f
Not applicable
flash_point_c
Not applicable
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