Xylose Lysine Deoxycholate

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6 Terms

1
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Color

Pink Melon

2
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Selective Agents

Bile salt - 2.5 g/L

3
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Select For

Gram-negative

  • Salmonella

  • Shigella

    • Shigella does not like 8.5 or 9 but likes 2.5 g/L

4
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Metabolite

Lactose - High []

Xylose - Low []

Lysine

Sucrose - High []

5
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pH Indicator

Phenol Red

Fe++ compound (detects H2S)

6
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Color of Significance

Fermentation byproducts (acidic) = Yellow

Protein (aa) Metabolism (basic) = Pink

H2S = black precipitate