Mannitol salt agar is often used to distinguish between different species of  Staphylococcus, a gram positive bacterium that is well adapted to living on dry, salty skin. Disease-causing strains of  Staphylococcus ferment mannitol; non-pathogenic strains cannot use mannitol. Is the medium Defined or Complex?

Human Anatomy & Physiology (11th Edition)
11th Edition
ISBN:9780134580999
Author:Elaine N. Marieb, Katja N. Hoehn
Publisher:Elaine N. Marieb, Katja N. Hoehn
Chapter1: The Human Body: An Orientation
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Mannitol salt agar is often used to distinguish between different species of  Staphylococcus, a gram positive bacterium that is well adapted to living on dry, salty skin. Disease-causing strains of  Staphylococcus ferment mannitol; non-pathogenic strains cannot use mannitol.

  • Is the medium Defined or Complex?
Function
soluble components of beef tissue
enzymatic digest of meat proteins
inhibits growth of most salt-intolerant cells
|6-C alcohol (energy source)
pH indicator: red at pH 7; turns yellow at low pH
Amount
1g
10g
75g
10g
|0.02g
15g
1000 ml
Ingredient
Beef extract
Peptone
NaCl
Mannitol
Phenol red
Agar
Water
Transcribed Image Text:Function soluble components of beef tissue enzymatic digest of meat proteins inhibits growth of most salt-intolerant cells |6-C alcohol (energy source) pH indicator: red at pH 7; turns yellow at low pH Amount 1g 10g 75g 10g |0.02g 15g 1000 ml Ingredient Beef extract Peptone NaCl Mannitol Phenol red Agar Water
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