MacConkey Agar Flashcards

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1
Q

What is MacConkey Agar selective for?

A

Gram-negative bacteria

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2
Q

What are the key ingredients in MacConkey Agar?

A

Lactose
Bile salts
Neutral red
Crystal violet

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3
Q

Explain the differential properties of MacConkey Agar

A

Gram-negative lactose fermenters will turn a red/pink color. Non-lactose fermenters will stay the same color or become the color of the media

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4
Q

How are MacConkey and EMB Agar similar?

A

They both are selective for gram-negative bacteria and differentiate based on lactose fermentation

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