Pearson eText for Laboratory Experiments in Microbiology -- Instant Access (Pearson+)
12th Edition
ISBN: 9780137546503
Author: Ted Johnson, Christine Case
Publisher: PEARSON+
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Chapter 48, Problem 1CT
Summary Introduction
To analyze:
The colourless colony isolated on MacConkey agar is Salmonella or Shigella
Introduction:
MacConkey agar acts as a differential medium for lactose fermenting bacterium and non-lactose fermenting bacterium. If the agar retains the red colour and the colonies are opaque, then they are lactose fermenters and if the agar is colourless and the colonies are translucent, then they are non-lactose fermenters.
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Pearson eText for Laboratory Experiments in Microbiology -- Instant Access (Pearson+)
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