1.05978

GranuCult^® plus OGYE agar, Base

according to ISO, for yeasts, for molds, suitable for microbiology

• Synonym(s): Oxytetra Glucose Yeast Agar Base, Oxytetracyclin-Glucose-Yeast Extract (OGYE) Agar Base
• UNSPSC Code: 41106213
• NACRES: NA.74

Properties

• agency: according to ISO
• Quality Level: 200
• sterility: non-sterile
• form: granular
• packaging: pkg of 500 g
• manufacturer/tradename: GranuCult^® plus
• storage condition: dry media (Keep tightly closed)
• technique(s): microbiological culture: suitable
• pH: 6.6±0.2 (25 °C)
• application(s): food and beverages; microbiology
• storage temp.: 15-25°C
• suitability: molds; yeasts

Description

General description

GranuCult^®plus Oxytetracyclin-Glucose-Yeast Extract Agar Base is used to isolate and enumerate yeasts and molds in foods. The base medium allows good growth of yeasts and molds. Oxytetracycline inhibits the growth of bacteria. The addition of an OGYE selective supplement (1.09877) to the base medium increases the recovery/count of yeast and molds. Yeast extract provides essential growth nutrients. Dextrose acts as a carbon and energy source. Low pH helps to reduce the bacterial flora.

Application

GranuCult^® plus Oxytetracyclin-Glucose-Yeast Extract Agar Base is suitable for the selective isolation and enumeration of yeasts and molds in foods.

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): yellow
pH-value (25 °C): 6.4 - 6.8
Recovery on test medium (Candida albicans ATCC 10231 (WDCM 00054)): ≥ 50 %
Recovery on test medium (Saccharomyces cerevisiae ATCC 9763 (WDCM 00058)): ≥ 50 %
Recovery on test medium (Aspergillus brasiliensis (formerly A. niger) ATCC 16404 (WDCM 00053)): ≥ 50 %
Recovery on test medium (Penicillium aurantiogriseum ATCC 16025): ≥ 50 %
Growth (Escherichia coli ATCC 25922 (WDCM 00013)): none
Growth (Bacillus subtilis ATCC 6633 (WDCM 00003)): none

Other Notes

The prepared mediumis clear and slight Yellowish-brown in color

Footnote

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.

Legal Information

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

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

Safety Information

• Storage Class: 11 - Combustible Solids
• wgk_germany: WGK 3