Principle
- Baird Parker Agar was developed by Baird Parker (1962), composed of tryptone, meat extract (equivalent to beef extract), glycine, yeast extract, sodium pyruvate, lithium chloride, and agar.
- Tryptone, meat extract, and yeast extract provide nitrogen, carbon, sulfur, and vitamins.
- Glycine and sodium pyruvate protect injured cells and help to recover them and stimulates the growth of Staphylococcus aureus. Lithium chloride and potassium tellurite acts as inhibitor agent for contaminating microflora.
- The tellurite additive is toxic to egg yolk-clearing strains other than S. aureus and imparts a black color to the colonies.
Use:
Recommended for the isolation, enrichment, and enumeration of coagulase-positive staphylococci from food and clinical samples.
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PARAMETERS
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STANDARD VALUES
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PHYSICAL PARAMETERS:
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Dehydrated Powder
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Description
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A fine, free-flowing, hygroscopic powder.
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Color
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Beige-colored powder.
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Solution
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Solubility
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Soluble in Distilled / de-ionized water at 50˚ C
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Color
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Light yellowish colored opalescent
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pH
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6.9 ±0.2 at 25 ˚C (63.00 g/ l)
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Agar Plates
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Solidification
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40 ˚C
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Color
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Light yellowish colored opalescent gel
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