Description
Unit Size: Each
The aerobic actinomycetes as a group are gram-positive, catalase-positive bacteria that may be presumptively identified by staining properties, microscopic morphology, and substrate degradation. Certain actinomycetes produce a hydrolytic enzyme that degrades the skim milk in Casein Agar, which is demonstrated by clearing of the agar surrounding the area of growth.
• Ready to use– Solid media
• Convenient– Quad plate format
• Space saving– Read more results from a single sample and produce more diagnostic details while reducing storage capacity issues in the incubator with a quad-plate that includes four separate media formulations
• Easy to interpret–Casein Agar (I)Positive Test – Clearing of casein agar around and/or under growthNegative Test – Growth with no clearing of the mediumXanthine Agar (II)Positive Test – Clearing of xanthine agar around and/or under growthNegative Test – Growth with no clearing of the mediumTyrosine Agar (III)Positive Test – Clearing of tyrosine agar around and/or under growthNegative Test – Growth with no clearing of the mediumStarch Agar (IV)Positive Test – No color development surrounding growthNegative Test - Purple color development surrounding growthCasein agar contains skim milk that acts as a substrate for the hydrolytic enzyme produced by some actinomycetes.Xanthine and Tyrosine Agars contain beef extract that provides carbohydrates, vitamins, nitrogen compounds, and salts. The peptones present in these media provide nutrients in the form of amino acids and peptides.Starch Agar contains potato starch which acts as a substrate to detect amylase production. This is demonstrated by clearing of the agar surrounding the area of growth, and easily detected upon addition of Gram Iodine or Lugol’s iodine.Not all products are available for sale in all territories. Please inquire.Remel™ and Oxoid™ products are now part of the Thermo Scientific brand.
