Description
Quantity: 500 g
Unit Size: Each
Use MacConkey Agar with MUG for the rapid presumptive identification of E.coli by a fluorogenic assay procedure.
• Ease of Differentiation:Combination of lactose and neutral red in the agar help identify the pink colonies. A highly fluorescent compound is released from MUG in the presence of β-glucuronidase which gives blue-green fluorescence.
• Selective:Bile salts inhibit gram positive organisms and crystal violet inhibits enterococci This medium contains gelatin, casein and meat peptones that provide nitrogenous compounds and amino acids essential for bacterial growth. Bile salts inhibit gram positive organisms and crystal violet inhibits enterococci. Crystal violet also restricts the swarming of Proteus. MacConkey agar is differential due to the combination of lactose and neutral red, an indicator. Lactose fermenters form pink colonies surrounded by a zone of precipitated bile. Non-lactose fermenters such as Salmonella and Shigella, form colorless, translucent colonies. MUG is added to facilitate detection of E.coli, which produces the enzyme β-glucuronidase. β-glucuronidase releases 4-methylumbelliferone from MUG, a fluorescent compound which appears blue-green when observed under longwave ultraviolet light. Not all products are available for sale in all territories. Please inquire. Remel™ and Oxoid™ products are now part of the Thermo Scientific brand.
