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Microbiology And Lab (MCB1010C) Phenol Red Broth

Sandra Watson
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Daytona State College

Microbiology and Lab (MCB1010C)

Phenol Red Broth
Phenol red broth is a general-purpose differential test medium usually used to
differentiate gram negative enteric bacteria. This experiment tests for the presence of acid and/or
gas produced from carbohydrate fermentation. This broth contains peptone, phenol red (pH
indicator) a Durham tube, and a carbohydrate. There are three different phenol red broths used,
one that contains glucose, one that contains lactose, and the last that contains sucrose.



Microbiology And Lab (MCB1010C) Phenol Red Broth

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