Thermo Scientific™ Vogel-Johnson Agar (Dehydrated)

Description

• Isolate and presumptively identify Staphylococcus aureus from clinical specimens and food with Thermo Scientific™ Oxoid™ Vogel-Johnson Agar (Dehydrated)
• The medium is based on the formula corresponding to the United States Pharmacopoeia 1
• Staphylococcus aureus reduces tellurite to metallic tellurium in the medium and appear as black colonies
• Staphylococcus aureus is a Gram-positive, round-shaped bacteria and can cause skin and soft tissue infections such as abscesses (boils), furuncles, and cellulitis
• Although most staph infections are not serious, S
• aureus can cause serious infections such as bloodstream infections, pneumonia, or bone and joint infections
• Vogel-Johnson Agar allows the early detection and of Staphylococcus aureus from heavily contaminated foods and clinical specimens by selecting and identifying coagulase-positive and monitol-fermenting strains
• Selective: tellurite, lithium chloride and the high glycine concentration inhibits most of the contaminating organisms
• Easy-to-read: Staphylococcus aureus appear as black colonies due to their ability to reduce tellurite to metallic tellurium
• Conforms to the United States Pharmacopoeia 1
• Allows the early detection and of Staphylococcus aureus from heavily contaminated foods and clinical specimens by selecting and identifying coagulase-positive and monitol-fermenting strains
• Vogel and Johnson 2 modified the Tellurite Glycine Agar formula of Zebovitz et al
• 3 by doubling the mannitol concentration to 1% (w/v) and adding Phenol Red as a pH indicator
• The enhanced fermentation reaction which occurs as a result of the increase in mannitol content is clearly indicated by the development of yellow zones surrounding the colonies
• Prolonged incubation may result in the growth of black coagulase-negative colonies and if these organisms also ferment mannitol they may be falsely identified from their appearance as Staphylococcus aureus
• In these circumstances, further tests of identity should be carried out before concluding that the organism is Staphylococcus aureus
• Not all products are available for sale in all territories
• Please inquire
• Remel™ and Oxoid™ products are now part of the Thermo Scientific brand.