Plot No. C40, Road No. 21Y, MIDC, Wagle Industrial Estate,
Thane(W)-400604, MH, India.
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Intended Use
Recommended for isolation and cultivation of Actinomycetaceae, Streptomycetaceae, fungi and moulds.
Composition
| Ingredients | g/L |
|---|---|
| HiVeg™™ extract | 4.000 |
| Yeast extract | 1.000 |
| HiVeg™™ peptone | 4.000 |
| Dextrose (Glucose) | 10.000 |
| Sodium chloride | 2.500 |
| Agar | 20.000 |
| Final pH (at 25°C) | 7.0±0.2 |
**Formula adjusted, standardized to suit performance parameters
Directions
Suspend 41.5 grams in 1000 ml purified / distilled water. Heat to boiling to dissolve the medium completely. Add 0.05 grams / litre cycloheximide, if desired. Sterilize by autoclaving at 15 lbs pressure (121°C) for 15 minutes. Mix well and pour into sterile Petri plates.
Principle And Interpretation
Emerson Agar was originally formulated by Emerson et al (1) and is used for the cultivation of moulds and bacterial species resembling moulds (2). This medium was further modified by Gottlieb et al (3) and is used for screening potent antibiotic-producing organisms (4). In their study, they stored Streptomyces in soil for long time and transferred them as needed, to slants of Emerson Agar. The slant cultures were incubated for 3-7 days. The spores were gently scraped from the cultures surface to form a spore inoculum. Emerson HiVeg™™ Agar is prepared by using vegetable peptones in place of animal based peptones which make the media free of BSE/TSE risks. Yeast extract provides a source of trace elements, vitamins and amino acids. For the selective isolation of Streptomyces species, cycloheximide is incorporated in the medium, which limits the growth of moulds. This medium is also used for routine cultivation and maintenance of pure cultures.
Type of specimen
please add specimens
Specimen Collection and Handling
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
- Further biochemical and serological tests must be carried out for further 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
Cream to yellow homogeneous free flowing powder
Gelling
Firm, comparable with 2.0% agar gel.
Colour and Clarity of prepared medium
Light amber coloured, clear to slightly opalescent gel forms in Petri plates
Reaction
Reaction of 4.15% w/v aqueous solution at 25°C. pH: 7.0±0.2
pH
6.80-7.20
Cultural Response
Cultural characteristics observed after an incubation at 30°C for 48-72 hours
| Organism | Growth |
|---|---|
| * Aspergillus brasiliensis ATCC 16404 (00053*) | luxuriant |
| Saccharomyces cerevisiae ATCC 9763 (00058*) | luxuriant |
| Streptomyces albus subsp albus ATCC 3004 | luxuriant |
| Streptomyces lavendulae ATCC 8664 | luxuriant |
| Streptomyces achromogenes ATCC 12767 | luxuriant |
Key: (*) Corresponding WDCM numbers. (#) Formerly known as Aspergillus niger
Storage and Shelf Life
Store between 10-30°C in a tightly closed container and the prepared medium at 20-30°C. Use before expiry date on the label. On opening, product should be properly stored dry, after tightly capping the bottle in order to prevent lump formation due to the hygroscopic nature of the product. Improper storage of the product may lead to lump formation. Store in dry ventilated area protected from extremes of temperature and sources of ignition. Seal the container tightly after use. 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 (5,6).
| Product Name | Emerson HiVeg™ Agar |
|---|---|
| SKU | MV325 |
| Product Type | HiVeg™ |
| Physical Form | Powder |
| Origin | Animal Free (Veg) |
| Packaging type | HDPE |
| References | 1. Emerson R. L., Whiffen A. J., Bohonos M. and DeBoer C., 1946, J. Bacteriol., 52:357. 2.Gottlieb D., Bhattacharya P. K., Anderson H. W. and Carter H. E., 1948, J. Bacteriol., 55:409. 3.Haynes W. C., Wickerham L. J. and Hesseltine C. W., 1955, Appl. Microbiol., 3:361. 4.Schmitz H. and Woodside R., 1955, Antibiot. Chemother., 5:652. |
| Customized Product Available | No |
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