Name:
Citrobacter, Enterobacter, Klebsiella, Escherichia
Under the scope:
Gram negative non-spore forming rods
On the plate:
L-EMB: typical colonies are pink to light purple with or without dark centers
MacConkey Agar: typical lactose fermenting organisms appear red to pink on agar
Violet Red Bile Agar: typical colonies are purple red with a zone of bile precipitate
In the incubator:
Optimal growth at 37° C
In the kitchen:
Other than E. coli, no foodborne outbreaks have been associated with coliforms. They are, however, an important indicator
of environmental and product hygiene.
Challenges of testing:
None.
More information:
1-800-245-0113
BioControl Technical Support
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