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Millipore

GranuCult® prime DRBC (Dichloran-rose bengal chloramphenicol) agar

ISO 21527-1, FDA-BAM

Synonyme(s) :

DRBC agar, Dichloran-rose bengal chloramphenicol agar, Modified Rose-Bengal Chloramphenicol Agar

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About This Item

Code UNSPSC :
41106213
Nomenclature NACRES :
NA.74

Agence

APHA
FDA-BAM
ISO 21527-1
ISO

Niveau de qualité

200

Conformité réglementaire

FDA

Stérilité

non-sterile

Forme

granular

Conditionnement

pkg of 500 g

Fabricant/nom de marque

GranuCult® prime

Conditions de stockage

dry media (Keep tightly closed)

Technique(s)

microbiological culture: suitable

Couleur

pink

pH

5.4-5.8 (25 °C, 32.6 g/L in H2O)

Solubilité

32.6 g/L

Application(s)

food and beverages
microbiology

Température de stockage

15-25°C

Adéquation

molds
yeasts

Description générale

GranuCult® prime Dichloran-rose bengal chloramphenicol (DRBC) agar is a selective agar for the enumeration of food-spoiling yeasts and molds. DRBC is a modification of Rose-Bengal Chloramphenicol Agar. In comparison to RBC, the medium contains Dichloran (0.002 g/L), the pH is lowered to 5.6 and the Rose-Bengal concentration is cut in half (0.025 g/L). This results in an increased inhibition of bacteria and yeasts. The inclusion of dichloran serves to inhibit the rapid spreading of mucoraceous fungi and restricts colony sizes of other genera, easing the colony count.

Application

GranuCult® prime Dichloran-rose bengal chloramphenicol agar is suitable for the enumeration of food-spoiling yeasts and molds.

Caractéristiques et avantages

  • GranuCult® offers superior granulated culture media
  • Safe and sustainable due to reduced risks associated with fine dust and toxic substance inhalation, resulting in a safer work environment
  • Excellent wettability, solubility, and free-flowing properties
  • Convenient, with minimal component separation and clumping, even under warm or humid conditions
  • High batch-to-batch reproducibility
  • Prolonged shelf life of up to five years
  • High number of test strains exceeding all regulatory demands
  • Granulation technology allows many supplements to be included, with no need to add these separately

Remarque sur l'analyse

Appearance (clearness): clear to slightly opalescent
Appearance (colour): pink
pH-value (25 °C): 5.4 - 5.8
Growth promotion test in accordance with the current version of DIN EN ISO 11133.
Inoculum on reference medium (Saccharomyces cerevisiae ATCC 9763 (WDCM 00058)):
Colony count (Saccharomyces cerevisiae ATCC 9763 (WDCM 00058)):
Recovery on test medium (Saccharomyces cerevisiae ATCC 9763 (WDCM 00058)): ≥ 50 %
Inoculum on reference medium (Aspergillus brasiliensis (formerly A. niger) ATCC 16404 (WDCM 00053)):
Colony count (Aspergillus brasiliensis (formerly A. niger) ATCC 16404 (WDCM 00053)):
Recovery on test medium (Aspergillus brasiliensis (formerly A. niger) ATCC 16404 (WDCM 00053)): ≥ 50 %
Inoculum on reference medium (Candida albicans ATCC 10231 (WDCM 00054)):
Colony count (Candida albicans ATCC 10231 (WDCM 00054)):
Recovery on test medium (Candida albicans ATCC 10231 (WDCM 00054)): ≥ 50 %
Inoculum on reference medium (Mucor racemus ATCC 42647 (WDCM00181)):
Colony count (Mucor racemus ATCC 42647 (WDCM00181)):
Recovery on test medium (Mucor racemus ATCC 42647 (WDCM00181)): ≥ 50 %
Growth (Escherichia coli ATCC 8739 (WDCM 00012)): no growth
Growth Escherichia coliATCC 25922 (WDCM 00013): no growth
Growth (Bacillus subtilis ATCC 6633 (WDCM 00003)): no growth
Incubation: 5 days at 25 ± 1 °C
A recovery rate of 50 % is equivalent to a productivity value of 0.5.
The indicated colony counts result from the sum of a triple determination.
Reference media: SABOURAUD dextrose agar

Note de bas de page

We offer two media types: the superior granulated GranuCult® and the cost-efficient powdered NutriSelect® culture media, depending on your needs.
The designations basic, plus, or prime are added to indicate the quality control level, from basic quality control to standard QC plus to prime for full regulatory compliance.

Informations légales

GRANUCULT is a registered trademark of Merck KGaA, Darmstadt, Germany
NutriSelect is a registered trademark of Merck KGaA, Darmstadt, Germany

Produit(s) apparenté(s)

Réf. du produit
Description
Tarif

Code de la classe de stockage

11 - Combustible Solids

Classe de danger pour l'eau (WGK)

WGK 3

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