Plot No. C40, Road No. 21Y, MIDC, Wagle Industrial Estate,
Thane(W)-400604, MH, India.
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Intended use
Recommended for cultivation of wide variety of microorganisms
Composition**
| Ingredients | Gms / Litre |
|---|---|
| Tryptone | 15.000 |
| Soya Peptone | 5.000 |
| Sodium chloride | 5.000 |
| Polysorbate 80 (Tween 80) | 0.500 |
| Agar | 15.000 |
| Final pH (at 25°C) | 7.3±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
Soyabean Casein Digest Agar is a widely used medium, which supports the growth of wide variety of organisms even that of fastidious ones such as Neisseria, Listeria, and Brucella etc. The medium with addition of blood provides perfectly defined haemolysis zones, while preventing the lysis of erythrocytes due to its sodium chloride content. It has been frequently used in the health industry to produce antigens, toxins etc. It's simple and inhibitor-free composition makes it suitable for the detection of antimicrobial agents in the food and other products. Tryptone Soya Agar is recommended by various pharmacopoeias as sterility testing medium (6, 3).
Tryptone Soya Agar conforms as per USP (6) and is used in microbial limit test and antimicrobial preservative - effective test. Gunn et al (2) used this medium for the growth of fastidious organisms and study of haemolytic reaction after addition of 5%v/v blood. The combination of tryptone and soya peptone makes this media nutritious by providing amino acids and long chain peptides for the growth of microorganisms. Sodium chloride maintains the osmotic balance. Polysorbate 80 is a neutralizer.
Type of specimen
Pharmaceutical samples
Specimen Collection and Handling:
For Pharmaceutical samples follow appropriate techniques for sample collection, handling and processing as per pharmacopeias. After use, contaminated materials must be sterilized by autoclaving before discarding.
Warning and Precautions
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 specimens. Safety guidelines may be referred in individual safety data sheets.
Limitations
- 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 in development.
- Each lot of the medium has been tested for the organisms specified on 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.
- It is recommended to store the plates ta 24-30°C to avoid minimum condensation.
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 Soyabean Casein Digest Agar Plate w/ 0.05% Tween 80 in 90 mm disposable plates.
Colour of medium: Amber coloured medium
Quantity of medium: 25 ml of medium in 90 mm disposable plates.
Reaction: 7.10-7.50
Dose of irradiation (Kgy): 13.00-20.00
Sterility Test: Passes release criteria
Cultural Response: Growth Promotion was observed after an incubation at 30-35°C for 18-24 hours for bacteria and for fungus <=5 days.
Recovery rate: Recovery rate is considered 100% for bacterial growth on Blood Agar and fungal growth on Sabouraud Dextrose Agar.
Growth promoting properties
Growth of microorganism comparable to that previously obtained with previously tested and approved lot of medium occurs at the specified temperature for not more than the shortest period of time specified inoculating <=100 cfu (at 30-35°C for 18 hours).
| Organism | Inoculum (CFU) | Growth | Recovery |
|---|---|---|---|
| Bacillus subtilis subsp. spizizenii ATCC 6633 (00003*) | 50-100 | luxuriant | >=70% |
| Staphylococcus aureus subsp. aureus ATCC 25923 (00034*) | 50-100 | luxuriant | >=70% |
| Staphylococcus aureus subsp. aureus ATCC 6538 (00032*) | 50-100 | luxuriant | >=70% |
| Escherichia coli ATCC 25922 (00013*) | 50-100 | luxuriant | >=70% |
| Escherichia coli ATCC 8739 (00012*) | 50-100 | luxuriant | >=70% |
| Escherichia coli NCTC 9002 | 50-100 | luxuriant | >=70% |
| Pseudomonas aeruginosa ATCC 27853 (00025*) | 50-100 | luxuriant | >=70% |
| Pseudomonas aeruginosa ATCC 9027 (00026*) | 50-100 | luxuriant | >=70% |
| Salmonella Abony NCTC 6017 | 50-100 | luxuriant | >=70% |
| Micrococcus luteus ATCC 9341 | 50-100 | luxuriant | >=70% |
| Streptococcus pneumoniae ATCC 6305 | 50-100 | luxuriant | >=70% |
| Salmonella Typhimurium ATCC 14028 (00031*) | 50-100 | luxuriant | >=70% |
| Clostridium sporogenes ATCC 19404 (00008*) | 50-100 | luxuriant | >=70% |
| Candida albicans ATCC 10231 (00054*) | 50-100 | luxuriant | >=70% |
| Candida albicans ATCC 2091 (00055*) | 50-100 | luxuriant | >=70% |
| Aspergillus brasiliensis ATCC 16404 (00053*) | 50-100 | Good-luxuriant | 50-70% |
| Aspergillus brasiliensis ATCC 16404 (00053*) | 50-100 | Luxuriant | >=70% |
| Candida albicans ATCC 10231 (00054*) | 50-100 | Good-luxurian | 50-70% |
| Candida albicans ATCC 2091 (00055*) | 50-100 | Good-luxuriant | 50-70% |
Key: (*) Corresponding WDCM numbers.
Storage and Shelf Life
On receipt store between 20-30°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 sample must be decontaminated and disposed of in accordance with current laboratory techniques (4,5).
| Product Name | Soybean Casein Digest Agar Plate w/0.05% Tween 80 (γ-irradiated) (Triple pack) |
|---|---|
| SKU | MP5282GT |
| Customized Product Available | No |
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