1.00025

Millipore

Half FRASER (Demi FRASER) broth (base) with antibiotics

acc. ISO 11290 GranuCult®

Pricing and availability is not currently available.

storage conditions

Store at +15°C to +25°C.

Agency/Method

ISO

form

medium granules (dehydrated (DCM))

mfr. no.

GRANUCULT®

application(s)

microbiological culture: suitable
microbiology: suitable
pathogen testing: suitable

pH

7.0-7.4 (25 °C, 55 g/L in H2O, after autoclaving)

solubility

55 g/L

Featured Industry

Food and Beverages

suitability

Listeria spp.

General description

GranuCult® is our new brand name for our existing granulated dehydrated culture media which apply to new EN ISO 11133:2014 and various other ISO standards and FDA-BAM / USDA-FSIS methods for testing of food and water samples. All these media are currently being updated to be fully compliant to the latest version of these standards and regulations with respect to composition and quality control and will be available shortly.

Analysis Note

Appearance (clearness): clear
Appearance (colour): yellowish-brown
pH-value (25 °C): 7.0 - 7.4
Growth promotion test in accordance with the current version of DIN EN ISO 11133.
Mixed inoculum of Listeria, E.coli and E.faecalis
Additionaly monoculture of E.coli and E.faecalis
Afterwards confirmation on ALOA®-Medium resp. Tryptic Soy agar
Inoculum on reference medium (Listeria monocytogenes ATCC 13932 (WDCM 00021)): ≤ 100
Inoculum on reference medium (Listeria monocytogenes ATCC 35152 (WDCM 00109)): ≤ 100
Inoculum on reference medium (Escherichia coli ATCC 25922 (WDCM 00013)): ≥ 1000
Inoculum on reference medium (Escherichia coli ATCC 8739 (WDCM 00012)): ≥ 1000
Inoculum on reference medium (Enterococcus faecalis ATCC 19433 (WDCM 00009)): ≥ 1000
Inoculum on reference medium (Enterococcus faecalis ATCC 29212 (WDCM 00087)): ≥ 1000
Growth on ALOA medium (Listeria monocytogenes ATCC 13932 (WDCM 00021)): >10 colonies
Growth on ALOA medium(Listeria monocytogenes ATCC 35152 (WDCM 00109)): >10 colonies
Colonies (Listeria monocytogenes ATCC 13932 (WDCM 00021)): blue green colonies with opaque halo
Colonies(Listeria monocytogenes ATCC 35152 (WDCM 00109)): blue green colonies with opaque halo
Growth on Tryptic soy agar (Escherichia coli ATCC 25922 (WDCM 00013)): total inhibition
Growth on Tryptic soy agar (Escherichia coli ATCC 8739 (WDCM 00012)): total inhibition
Growth on Tryptic soy agar (Enterococcus faecalis ATCC 29212 (WDCM 00087)): <100 colonies
Growth on Tryptic soy agar (Enterococcus faecalis ATCC 19433 (WDCM 00009)): <100 colonies
Incubation:
Half Fraser Broth: 24 ± 2 hours at 30 ± 1°C
Confirmation on ALOA-Medium: 44 ± 4 hours at 37 ± 1°C
Confirmation on Tryptic Soy Agar: 24 ± 3 hours at 37 ± 1°C

Legal Information

ALOA is a registered trademark of Biolife Italiana S.r.l.
GRANUCULT is a registered trademark of Merck KGaA, Darmstadt, Germany
Articles
Detection of Listeria monocytogenes in food and environmental samples according to ISO 11290-1, FDA-BAM and USDA-FSIS
Read More
Protocols
In recent years it has been recognized that Listeria is an important public health problem. The disease affects primarily people of advanced age, pregnant women, newborns, and adults with weakened immune systems.
Read More

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