اسافیلوکوکوس اوروس

اسافیلوکوکوس اوروس

اسلاید 1: Staphylococcus Identification Tests

اسلاید 2:

اسلاید 3: Typical characteristicsCatalase CoagulaseNaCl tolerance

اسلاید 4: CatalaseImportant enzyme in protecting the cell from oxidative damage by reactive oxygen speciesEnzyme action is breakdown of toxic H2O2 producing oxygen gas and water2H2O2 2H2O + O2 catalase

اسلاید 5: Biochemistry testsCatalase test: Place a drop of 3% H2O2 on a glass slidePositive reaction: gas generationS. aureus: positive

اسلاید 6: Couagulase The coagulase test is used to differentiate the potentially pathogenic species Staphylococcus aureus from the usually non-pathogenic species Staphylococcus epidermidis.

اسلاید 7: 1.Coagulase test is one of the biochemical tests .It is very important test in the microbiology. 2.The coagulase test identifies whether an organism produces the exoenzyme coagulase, which causes the fibrin of blood plasma to clot.3.Organisms that produce Coagulase can form protective barriers of fibrin around themselves, making themselves highly resistant to phagocytosis

اسلاید 8: Types of coagulase There are 2 types of coagulase enzyme: 1- bound coagulase. 2-free coagulase.