70139

Potato Glucose Agar

NutriSelect^® Plus, suitable for microbiology

• Synonyme(s) : Potato Dextrose Agar
• Code UNSPSC : 41171605
• Nomenclature NACRES : NA.74

Propriétés

• Agence: APHA; USP
• Niveau de qualité: 200
• Conformité réglementaire: FDA
• Stérilité: non-sterile
• Forme: powder
• Durée de conservation: limited shelf life, expiry date on the label
• Composition: agar, 15 g/L ; dextrose, 20 g/L ; potato extract, 4 g/L
• Conditionnement: pkg of 100 g; pkg of 2.5 kg; pkg of 500 g
• Fabricant/nom de marque: NutriSelect^® Plus
• Technique(s): microbiological culture: suitable
• Couleur: light yellow
• pH final: 5.6±0.2 (25 °C)
• Application(s): agriculture; bioburden testing; environmental; food and beverages; microbiology
• Adéquation: nonselective for Aspergillus spp.; nonselective for Candida spp.; nonselective for Penicillium spp.; nonselective for Pichia spp.; nonselective for Saccharomyces spp.; nonselective for Zygosaccharomyces spp.; nonselective for molds (General Media); nonselective for yeasts (General Media)

Description

Description générale

Potato Dextrose Agar is recommended for the isolation and enumeration of yeasts and molds in dairy and food products. Potato extract serves as a source of carbon, nitrogen, minerals, vitamins, and other essential growth nutrients. Dextrose acts as a source of carbohydrates. Agar is the solidifying agent. The accompanying bacterial flora is suppressed by the low pH of 3.5. The growth of yeasts and molds is promoted in this medium, and the fungi develop typical morphology. The addition of Rose Bengal further suppresses the growth of bacteria and restricts the size and spreading of mold colonies.

Application

Potato Dextrose Agar is used for the isolation and enumeration of yeasts and molds in dairy and food products. The media is also used for stimulating sporulation, maintaining stock cultures of certain dermatophytes, and as a differential media for certain varieties of dermatophytes on the basis of pigment production.

Caractéristiques et avantages

NutriSelect^® Plus are powdered culture media offering

• Quality control with growth promotion test according to industry standards
• Quality assurance acc. to ISO 9001
• Cost-efficient powdered media

Notes préparatoires

Suspend 39 g in 1 litre of distilled water. Bring to the boil to dissolve completely. Sterilize by autoclaving at 121°C for 15 minutes. In order to suppress bacterial growth, 1 ml of 10% sterile lactic acid can be added for dropping pH to 3.5. Mix well before pouring.

Autres remarques

Studies on contamination of yogurt by yeast; For maintaining the stock culture of Rhodotorula glutinis for the production of extracellular lipase; Identification of Aspergillus niger from infected onion tissue

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

Informations sur la sécurité

• Code de la classe de stockage: 11 - Combustible Solids
• Classe de danger pour l'eau (WGK): WGK 3
• Point d'éclair (°F): Not applicable
• Point d'éclair (°C): Not applicable
• Équipement de protection individuelle: Eyeshields, Gloves, type N95 (US)