Vogel-Johnson Agar is recommended for early detection of coagulase-positive, mannitol fermenting strains of Staphylococcus aureus.
InMicro® Prepared: Vogel Johnson Agar
$169.00
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Detect coagulase-positive, mannitol fermenting strains of Staphylococcus aureus from contaminated foods and clinical specimens using InMicro® Prepared: Vogel Johnson Agar. In 1955, Zebovitz et al. developed Tellurite-Glycine Agar as a selective medium for the detection of coagulase-positive staphylococci. Vogel and Johnson increased the mannitol content and added phenol red as a pH indicator to create Vogel-Johnson Agar. This agar is recommended for food bacteriology.
Staphylococcus is a common cause of food poisoning due to production of enterotoxins. Staphylococcus aureus is a gram-positive bacteria that causes a wide variety of clinical diseases. Infections caused by this pathogen are common both in community-acquired and hospital-acquired settings.
Vogel-Johnson Agar, by selectively identifying coagulase-positive and mannitol-fermenting strains, permits the early detection of Staphylococcus aureus from heavily contaminated foods and clinical specimens.
- Ready to use – Convenience of a prepared media
- Selective – Potassium tellurite, lithium chloride and glycine act as selective agents which inhibit non-staphylococcal organisms, including many gram-negative and gram-positive bacteria.
- Easy to interpret – Coagulase-positive staphylococci ferment mannitol to form yellow zones around the colonies. S. aureus reduces potassium tellurite to metallic tellurium resulting in black colonies.
This medium contains casein peptone that provides essential amino acids, peptides, and nitrogen essential for the growth of bacteria. Yeast extract supplies essential B-complex vitamins. Potassium tellurite, lithium chloride and glycine are selective agents which inhibit non-staphylococcal organisms, including many gram-negative and gram-positive bacteria. Phenol red is the pH indicator and agar is the solidifying agent.
The fermentation of mannitol by coagulase-positive staphylococci is indicated by development of yellow zones surrounding the colonies. This is caused by a pH change, resulting in the phenol red indicator turning from red to yellow.
Compliance
Manufactured at a cGMP-compliant facility under the ISO 13485 standard, ensuring high-quality manufacturing standards, consistency, and reliability for both research and industrial settings.
Manufacturing Origin
United States
Product Type
Agar
Format
Monoplate
| Product Quantity | Pack of 10 |
|---|
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