Lab notes: 10-8-09

Here are the notes I took on the selective and differential media that we learned about today.

Simmons Citrate agar
Green turns blue if bacteria can use citrate as a sole energy source

< Salmonella will turn blue
< E. Coli will stay green

Kilger Iron Agar
Red, turns yellow at low pH (as a result of sugar fermentation)
Iron and sulfer = sulfide if bacteria produce H2 as a byproduct, agar turns black.

< E. Coli will turn yellow
< Salmonella will turn black

Kassie Hein

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