Membranfiltration Flashcards

1
Q

Was zeichnet einen chromogenen coliformen Agar aus?

A

Farbreaktion, geringe Selektivität, eignet sich für Proben mit geringer Bakterienzahl

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2
Q

Welches Enzym exprimieren Enterobacteriaceae?

A

Beta-D-Galactosidase

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3
Q

Was passiert wenn auch beta-D-Glucuronidase exprimiert wird?

A

Blaue/violette Farbreaktion

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4
Q

Wie umgeht man ein falsch positives Ergebnis?

A

Oxidase-Test

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5
Q

Woraus bestehen Membranfilter?

A

Zelluloseester, 47-55mm, Poren 0.45 microm

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6
Q

Probenvolumen?

A

100 ml je Probe

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7
Q

Wie werden Subkulturen angelegt?

A

Nicht-selektives Agar (36+-2°C)

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