Compact Dry X-SA medium for the enumeration of Staphylococcus aureus
The Compact Dry X-SA method was compared against EN ISO 6888-1:1999.
PRINCIPLE OF THE METHOD : Compact Dry (manufactured by Nissui Pharmaceutical Co. Ltd; supplied by Hyserve Gmbh & Co. KG) are ready-to-use dry media sheets comprising culture medium and a cold-soluble gelling agent, rehydrated by inoculating 1 ml diluted sample into the centre of the self-diffusible medium. The Compact Dry X-SA medium is a "ready-to-use, plating system for enumeration of Staphylococcus aureus. The CD X-SA contains chromogenic medium and selective agents for the detection and enumeration of S. aureus, which appear as light blue/blue colonies. This method is an alternative method to the standard method enabling determination of S. aureus counts in foods after 24 ± 2h incubation
REFERENCE METHOD: BS EN ISO 6888-1:1999 Microbiology of food and animal feeding stuffs - Horizontal method for the enumeration of coagulase-positive staphylococci (Staphylococcus aureus and other species) - Part 1: Technique using Baird-Parker agar medium.
SCOPE: All human food products