Question about Kirby-Bauer method

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Question about Kirby-Bauer method

Post by miramax » Fri Feb 10, 2012 5:15 am

Hi, I'm trying to do the Kirby-Bauer method by testing the effect of certain foods' ability to inhibit pathogen growth.

I was wondering if it's possible to do this method by just streaking the agar plates with pathogens like E.Coli straight from the tube (from the catalogue) or is it a must to use only pathogens after it has been grown in broth??

My plan was to just streak like E. Coli with an inoculating loop in a zig-zag pattern every 90 degrees, pretty much covering the whole plate. And then I would place my paper disks on top of the agar...

Thanks for replies.

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Post by JackBean » Fri Feb 10, 2012 7:41 am

Usually you do overnight culture first. First, you will make sure the bacteria are viable. Second, you don't want to run out of your stock and order it again ;)

Cis or trans? That's what matters.

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