ISO 6888-1 PDF

Горизонтальный метод подсчета коагулазоположительных стафилококков Staphylococcus aureus и другие виды. Часть 1. Метод с применением агаровой среды Байрд-Паркера ; - ISO Microbiology of food and animal feeding stuffs - Horizontal method for the enumeration of coagulase-positive staphylococci Staphylococcus aureus and other species - Part 2: Technique using rabbit plasma fibrinogen agar medium Микробиология пищевых продуктов и кормов для животных. Часть 2. Метод с применением агаровой среды с кроличьей плазмой и бычьим фибриногеном ; - ISO Microbiology of food and animal feeding stuffs - Horizontal method for the enumeration of coagulase-positive staphylococci Staphylococcus aureus and other species - Part 3: Detection and MPN technique for low numbers Микробиология пищевых продуктов и кормов для животных.

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Mix well and pour into sterile Petri dishes. Description supplemented medium Baird-Parker4 developed this agar medium from the tellurite-glycine formulation of Zebovitz et al. Baird-Parker added egg yolk emulsion as a diagnostic agent and sodium pyruvate to protect damaged cells and aid their recovery6. It is now widely recommended by national and international bodies for the isolation of coagulase-positive staphylococci7 and is included in Microbiology of food and animal feeding stuffs-Horizontal method for the enumeration of coagulase-positive staphylococci Staphylococcus aureus and other species ISO and ISO Detection and MPN technique for low numbers2.

The selective agents; glycine, lithium and tellurite have been carefully balanced to suppress the growth of most bacteria present in foods, without inhibiting coagulase-positive staphylococci. On further incubation, most strains of coagulase-positive staphylococci form opaque haloes around the colonies; this is thought to be due to the action of a lipase.

Not all strains of coagulase-positive staphylococci produce both reactions. Some strains of coagulase-negative Staphylococcus saprophyticus produce both clear zones and opaque haloes but experienced workers can distinguish these from other organisms by the longer incubation time required8.

These can be confirmed by performing a tube coagulase test9. Baird-Parker and Davenport10 showed that the recovery of damaged staphylococci was greater on Baird-Parker Agar than on other recovery media tested.

Broeke11 and de Waart et al. Of the strains of Staphylococcus aureus tested, isolated from human and food origins, Technique Refer to the relevant standard method for detailed instructions. Up to 1. The prepared medium is best used freshly prepared, but may be suitable for longer storage following in-house validation.

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