Sabouraud Dextrose Agar Plate w/ Gentamicin

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SKU:
MP5386


Intended Use:

Recommended ffor the selective isolation of fungi from clinical and non-clinical specimen.

Composition

Ingredients g/L
Dextrose (Glucose) 40.000
Mycological, peptone 10.000
Gentamicin 0.0400
Agar 15.000
Final pH (at 25°C) 5.6±0.2

**Formula adjusted, standardized to suit performance parameters

Directions

Either streak, inoculate or surface spread the test inoculum (50-100 CFU) aseptically on the plate.

Principle And Interpretation

Sabouraud Dextrose Agar is Carliers modification (1) of the formulation described by Sabouraud (2) for the cultivation of fungi (yeasts, moulds), particularly useful for the fungi associated with skin infections. This medium is also employed to determine microbial contamination in food, cosmetics, and clinical specimens (3).

Mycological peptone provides nitrogenous compounds. Dextrose (Glucose) provides an energy source. High dextrose concentration and low pH favours fungal growth and inhibits contaminating bacteria from test samples (4). Gentamicin inhibits most of the bacterial contaminants. Some pathogenic fungi may produce infective spores which are easily dispersed in air, so examination should be carried out in safety cabinet.

Type of specimen

Clinical samples - Skin scraping, nail scraping, etc.; Food samples

Specimen Collection and Handling:

For food samples, follow appropriate techniques for sample collection and processing as per guidelines (5). For clinical samples follow appropriate techniques for handling specimens as per established guidelines (6,7). After use, contaminated materials must be sterilized by autoclaving before discarding.

Warning and Precautions :

In Vitro diagnostic Use. For professional use only. Read the label before opening the container. Wear protective gloves/protective clothing/eye protection/face protection. Follow good microbiological lab practices while handling specimens and culture. Standard precautions as per established guidelines should be followed while handling clinical specimens. Safety guidelines may be referred in individual safety data sheets.

Limitations :

  1. Individual strain of a microorganism may have unique growth requirements with respect to nutrients and physical conditions. Based on which the growth pattern of each varies on a medium and some even may display significant delay.
  2. Some pathogenic fungi may produce infective spores which are easily dispersed in air, so examination should be carried out in safety cabinet.
  3. Each lot of the medium has been tested for the organisms specified in the COA. It is recommended to users to validate the medium for any specific microorganism other than mentioned in the COA based on the user's unique requirement.
  4. Further biochemical tests should be carried out for complete identification.

Performance and Evaluation

Performance of the medium is expected when used as per the direction on the label within the expiry period when stored at recommended temperature.

Quality Control

Appearance: Sterile Sabouraud Dextrose Agar w/ Gentamicin in 90mm disposable plate with smooth surface and absence of black particles/cracks/bubbles.

Colour of Medium: Light amber coloured medium.

Quantity of Medium: 25ml of medium in 90mm disposable plates

pH: 5.40-5.80

Sterility Check: Passes release criteria

Cultural Response: Cultural characteristics observed after incubation at 22-28 °C for 48-72 hours.

Organism Inoculum (CFU) Growth Recovery
Candida albicans ATCC 10231 (00054*) 50-100 good to luxuriant (white colonies) >=50%
#Aspergillus brasiliensis ATCC 16404 (00053*) 50-100 good to luxuriant >=50%
Saccharomyces cerevisiae ATCC 9763 (00058*) 50-100 good to luxuriant >=50%
$Trichophyton interdigitale ATCC 9533 50-100 good to luxuriant >=50%
Escherichia coli ATCC 25922 (00013*) 50-100 none-poor 0-10%
Escherichia coli ATCC 8739 (00012*) 50-100 none-poor 0-10%
Staphylococcus aureus subsp. aureus ATCC 25923 (00034*) 50-100 none-poor 0-10%
Staphylococcus aureus subsp. aureus ATCC 6538 (00032*) 50-100 none-poor 0-10%
Pseudomonas aeruginosa ATCC 27853 (00025*) 50-100 none-poor 0-10%
^Pseudomonas paraeruginosa ATCC 9027 (00026*) 50-100 none-poor 0-10%

Key: (*) Corresponding WDCM numbers, (*)-Formerly known as Aspergillus niger, (^) Formerly known as Pseudomonas aeruginosa, ($) Formerly known as Trichophyton mentagrophytes.

Storage and Shelf Life

Store between 2-8°C. Use before expiry date on the label. Product performance is best if used within stated expiry period.

Disposal

User must ensure safe disposal by autoclaving and/or incineration of used or unusable preparations of this product. Follow established laboratory procedures in disposing of infectious materials and material that comes into contact with clinical sample must be decontaminated and disposed of in accordance with current laboratory techniques (6,7).

More Information
Product Name Sabouraud Dextrose Agar Plate w/ Gentamicin
SKU MP5386
Customized Product Available No
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