Agar Medium C (Sabouraud-Glucose Agar with Chloramphenicol)

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SKU:
ME1067
Recommended for selective cultivation of yeasts and moulds in accordance accordance with European Pharmacopoeia.


Sabouraud Glucose Agar w/Chloramphenicol is recommended for selective cultivation of yeasts and moulds in accordance with European Pharmacopoeia.

Composition**

Ingredients Gms/Litre
Peptones (meat and casein) 10.000
Glucose monohydrate 40.000
Chloramphenicol 0.050
Agar 15.000
pH after sterilization( at 25°C) 5.6±0.2

**Formula adjusted, standardized to suit performance parameters

Directions

Suspend 61.41 grams (the equivalent weight of dehydrated medium per litre) in 1000 ml purified/distilled water. Heat to boiling to dissolve the medium completely. Sterilize by autoclaving at 15 lbs pressure (121°C) for 15 minutes or as per validated cycle. Mix well before pouring into sterile Petri plates.

Principle And Interpretation

Sabouraud Glucose Agar w/Chloramphenicol is cited as Medium C and recommended for cultivation of yeasts and moulds by European Pharmacopoeia (1). This medium was described originally by Sabouraud (2) for the cultivation of fungi, particularly useful for the fungi associated with skin infections. The medium is often used with antibiotics such as Chloramphenicol (3) for the isolation of pathogenic fungi from materials containing large numbers of fungi or bacteria. Peptones (from meat and casein) provide nitrogenous compounds. Glucose monohydrate provides an energy source. Chloramphenicol inhibits a wide range of Gram-positive and Gram-negative bacteria which makes the medium selective for fungi (4). The low pH favours fungal growth and inhibits contaminating bacteria from clinical specimens (5).

Some pathogenic fungi may produce infective spores which are easily dispersed in air, so examination should be carried out in safety cabinet.

Quality Control

Appearance
Cream to yellow homogeneous free flowing powder

Gelling
Firm, comparable with 1.5% Agar gel

Colour and Clarity of prepared medium
Light amber coloured clear to slightly opalescent gel forms in Petri plates

pH
5.40-5.80

Growth Promotion Test

Growth Promotion was carried out in accordance with the harmonized method of EP, after an incubation at 20-25 °C for <=5 days. Recovery rate is considered as 100% for bacteria growth on Soybean Casein Digest Agar and fungus growth on Sabouraud Dextrose Agar

Cultural Response

Organism Inoculum
(CFU)
Growth Observed Lot Recovery
value (CFU)
Incubation
temperature
Incubation
period
Candida albicans ATCC 10231 50-100 Luxuriant (white colonies) 25-100 20-25 °C <=5 d
*Aspergillus brasiliensis ATCC 16404 50-100 luxuriant 25-100 20-25 °C <=5 d
Candida albicans ATCC 2091 50-100 luxuriant 25-100 20-25 °C <=5 d
Saccharomyces cerevisiae ATCC 9763 50-100 luxuriant 35-100 20-25 °C <=5 d
Escherichia coli ATCC 25922 >=10³ inhibited 0 20-25 °C <=5 d
Escherichia coli ATCC 8739 >=10³ inhibited 0 20-25 °C <=5 d
Escherichia coli NCTC 9002 >=10³ inhibited 0 30-35 °C <=5 d
Trichophyton rubrum ATCC 28191 50-100 good 20-25 °C <=7 d
Lactobacillus casei ATCC 334 >=10³ inhibited 0 20-25 °C <=5 d

Storage and Shelf Life

Store between 15-25°C in tightly closed container and the prepared medium at 2 - 8°C. Use before expiry date on the label.

More Information
Product Name Agar Medium C (Sabouraud-Glucose Agar with Chloramphenicol)
SKU ME1067
Customized Product Available No
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