Recent developments in culture media have given rise to the use of chromogenic substrates as a means of differentiating bacteria particularly among the coliform group of organisms. This is one such medium and has been developed primarily as a selective medium for the isolation and enumeration of Escherichia coli in food samples. Based on Tryptone Bile Agar it incorporates the chromogenic agent X-glucuronide, which detects glucuronidase activity, the same enzyme as is detected by MUG reagent. Escherichia coli can be differentiated from other coliform organisms by the presence of glucuronidase resulting in the colonies being blue/green while the other coliforms are colourless. For information on the full technical detail as to the functionality of this medium reference should be made to the many publications available.
|Shelf Life (days)|
|Storage Temp (°C)|
|Escherichia coli||NCTC 12241||Colourless colonies|
|Escherichia coli||NCTC 13216||Blue/ Green colonies|
|Enterococcus faecalis||NCTC 12697||Inhibited|
|Citrobacter freundii||ATCC 43864||Cream colonies|
Send Enquiry for Columbia Agar Base with 7% Defibrinated Horse Blood SlopeEnquiry email sent successfully!
Send Enquiry for Fastidious Anaerobe Broth (FAB)Enquiry email sent successfully!
Send Enquiry for Brilliant Green Bile Broth (with Durham Tube)Enquiry email sent successfully!
Send Enquiry for Ringers with Glass Beads (¼ Strength)Enquiry email sent successfully!
Send Enquiry for Enterobacteriaceae Enrichment BrothEnquiry email sent successfully!
Send Enquiry for Rappaport Vassiliadis Broth (USP)Enquiry email sent successfully!