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Staphylococcus Selective Agar (Powder)

Cat no: S7965-30

Staphylococcus Selective Agar (Powder)

Selective medium for Staphylococcus recovery from food products and clinical material.\n\nMode of Action:\nThis medium contains lithium chloride and tellurite to inhibit the growth of accompanying microbial flora, whereas pyruvate and glycine selectively stimulate the growth of staphylococci.\nStaphylococcus colonies show two characteristic features when grown in this opaque medium (opaque, because of its egg-yolk content)\na) characteristic zones and rings are formed as a result of lipolysis and proteolysis,\nb) reduction of tellurite to tellurium produces a black coloration.\nThe egg-yolk reaction and tellurite reduction are usually found to occur together with a positive coagulase reaction and can thus serve as an index for the latter.\n\nStadhouders et al. (1976) recommend that egg-yolk should be replaced with blood plasma, if coagulase-positive staphylococci are to be detected directly. Smith and Baird-Parker (1964) recommend the addition of sulfamethazine to suppress the growth and swarming of Proteus species.

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SPECIFICATIONS

Catalog Number

S7965-30

Size

500g

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