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Different Plates

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gotcelloskills's version from 2015-04-20 19:54

Summary

This page helps you learn types of media plates in microbiology.

Plates

NameUseReactionsDifferential FactorInhibitory Factor
Mannitol Salt Agar (MSA)Differentiates between different staphylococcusBacteria that ferment mannitol produce large amounts of acid that lower the pH of the medium, causing the pH indicator to change color from red to yellowMannitolSalt
Bile Esculin Azide (BEA)isolate and identify enterococcienterococci hydrolyze esculin and turn it dark brownesculinbile salts
Eosin Methylene Blue (EMB)distinguishes Gram-negative lactose fermenters from lactose nonfermenterslactose fermenters=purple; non-lactose fermenters=grey e. coli=shimmery greeneosin and methylene blue dyesN/A
Blood Agar Plate (BAP)isolate fastidious organisms and detect hemolytic activityalpha, beta, and gamma reactionsN/AN/A
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