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1.05448

Wort agar

GranuCult® plus, RAPP (1974), granular, for molds, for yeasts, pkg of 5 kg, pkg of 500 g

Synonym(s):

Selective media for yeasts and molds, Yeasts and molds medium

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About This Item

NACRES:
NA.74
UNSPSC Code:
41106213
Manufacturer/tradename:
GranuCult® plus
Agency:
RAPP (1974)
Ph:
5.0 (30 °C, 55 g/L in H2O, after autoclaving)
Form:
granular
Suitability:
molds, yeasts
Application(s):
food and beverages
microbiology
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agency

RAPP (1974)

Quality Level

200

sterility

non-sterile

form

granular

packaging

pkg of 5 kg, pkg of 500 g

manufacturer/tradename

GranuCult® plus

storage condition

dry media (Store tightly closed)

technique(s)

microbiological culture: suitable

color

beige

pH

5.0 (30 °C, 55 g/L in H2O, after autoclaving)

solubility

55 g/L

bulk density

520 kg/m3

application(s)

food and beverages
microbiology

storage temp.

15-25°C

suitability

molds, yeasts

General description

Wort agar is used for the cultivation, isolation, and enumeration or enrichment of yeasts. The addition of certain indicator dyes to the medium allows differentiation between yeast and bacterial colonies. The accompanying bacterial flora is weakly suppressed by a pH value of 5.0 and largely by a pH of 3.5.

Application

Wort agar is suitable for the cultivation, isolation, and enumeration or enrichment of fungi, especially of yeasts.

Features and Benefits

  • 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

Analysis Note

Appearance (clearness): clear
Appearance (colour): brownish
Solidification behaviour (2 hrs., 45 °C): liquid
pH-value (25 °C): 4.8 - 5.2
Recovery on test medium (Candida albicans ATCC 10231 (WDCM 00054)): ≥ 70 %
Recovery on test medium (Saccharomyces cerevisiae ATCC 9763 (WDCM 00058)): ≥ 70 %
Recovery on test medium (Saccharomyces cerevisiae ATCC 9080): ≥ 70 %
Recovery on test medium (Rhodotorula mucilaginosa DSM 70403): ≥ 70 %
Growth (Geotrichum candidum DSM 1240): good to very good
Growth (Penicillium commune ATCC 10428): fair to very good
Growth (Aspergillus brasiliensis (formerly A. niger) ATCC 16404 (WDCM 00053)): good to very good
Growth (Trichophyton ajelloi ATCC 28454): fair to good
Incubation: 7 days; 28 °C; aerobic (yeasts 3 days).

Legal Information

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

Disclaimer

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.

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Storage Class

11 - Combustible Solids

wgk

WGK 3

Regulatory Listings

Regulatory Listings are mainly provided for chemical products. Only limited information can be provided here for non-chemical products. No entry means none of the components are listed. It is the user’s obligation to ensure the safe and legal use of the product.

Substances Subject to be Indicated Names

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Substances Subject to be Notified Names

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Certificates of Analysis (COA)

Search for Certificates of Analysis (COA) by entering the products Lot/Batch Number. Lot and Batch Numbers can be found on a product’s label following the words ‘Lot’ or ‘Batch’.

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Global Trade Item Number

SKUGTIN
1.05448.500004022536065182
1.05448.050004022536065151