Can E. coli on MacConkey agar appear purple?

Subject: Can E. coli on MacConkey agar appear purple?

Date: Wed Feb 27 14:37:08 2002
Posted by Dana
Grade level: 10-12 School: North Seattle Comm. College
City: Seattle State/Province: WA Country: USA
Area of science: Microbiology
ID: 1014838628.Mi

Message:


We're doing a lab using unknowns that we have to identify. I think I have E. 
coli in mine, but whatever organism I have turned purple on MacConkey 
agar and also caused the agar to lose most of its color.

Re: Can E. coli on MacConkey agar appear purple?

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