Coagulase is an enzyme that catalyzes the formation of a fibrin clot in plasma. Obvious clumping of the bacteria indicates the bacteria produces bound caogulase.
Staphylococcus aureus ...
-Gram-positive
-nonhemolytic on blood agar.
– nonmotile
-catalase :positive
-coagulase :negative
-facultative anaerobe
-oxidase : negative
– sensitive to novobiocin
– ...
Mannitol salt agar (MSA) is a differential and selective media. It is selective because its high salt concentration (7.5 %) inhibits the growth of most bacteria. However, Staphylococcus ...
Staphylococcus epidermidis on Mannitol Agar.
notes that it can not ferment the mannitol so the agar still has it’s pink color.