Staphylococcus aureus-specific detection media and identifying and/or counting method using same
First Claim
1. A medium for the detection of Staphylococcus aureus and/or of coagulase-positive Staphylococci, which comprises a Staphylococcus aureus culture medium and at least one enzyme substrate for demonstrating α
- -glucosidase activity, wherein the enzyme substrate for demonstrating α
-glucosidase activity is a chromogenic or fluorescent agent and is indoxyl-based, umbelliferone-based, or napthol-based, said medium further comprising at least one inhibitor which favors the growth of Staphylococcus aureus and/or of coagulase-positive Staphylococci.
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Abstract
The invention concerns a medium for specific detection of Staphylococcus aureus and/or discrimination between positive-coagulase Staphylococcus and negative-coagulase enabling Staphylococcus to isolate bacteria of the genus staphylococcus and identify the Staphylococcus aureus species, which use at least an enzymatic substrate, preferably a chromogenic or fluorescent agent, and still more preferably consisting of an indoxyl or naphthol base. The invention also concerns a method for identifying, and optionally counting, Staphylococcus aureus using such a medium. It consists of a Staphylococcus aureus culture medium and at least an enzymatic substrate enabling testing of an α-glucosidase activity. The invention is particularly applicable in the field of diagnosis.
11 Citations
14 Claims
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1. A medium for the detection of Staphylococcus aureus and/or of coagulase-positive Staphylococci, which comprises a Staphylococcus aureus culture medium and at least one enzyme substrate for demonstrating α
- -glucosidase activity, wherein the enzyme substrate for demonstrating α
-glucosidase activity is a chromogenic or fluorescent agent and is indoxyl-based, umbelliferone-based, or napthol-based, said medium further comprising at least one inhibitor which favors the growth of Staphylococcus aureus and/or of coagulase-positive Staphylococci. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 14)
- -glucosidase activity, wherein the enzyme substrate for demonstrating α
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13. A medium for the detection of Staphylococcus aureus and/or of coagulase-positive Staphylococci, which comprises a Staphylococcus aureus culture medium, maltose, and at least one enzyme substrate for demonstrating α
- -glucosidase activity, wherein the enzyme substrate for demonstrating α
-glucosidase activity is a chromogenic or fluorescent agent, and wherein the maltose is present at a concentration of between 100 and 300 mg/l.
- -glucosidase activity, wherein the enzyme substrate for demonstrating α
Specification