Staphylococcus Bacteria

Staphylococcus aureus colonies are large, round, regular, smooth, and opaque, mostly cream, yellow, or orange in color.

Staphylococcus aureus produces virulence factors such as the peptidoglycan layer, teichoic acid, and protein A in the cell wall.

The diagnostic methods include microscopy (smear of clinical materials stained according to Gram stain), culture on solid media (Nutrient agar or blood agar), and biochemical reactions like the catalase test, coagulase test, and fermenting mannitol.

<p>MSA contains sugar mannitol, the indicator phenol red, and 7.5% salt (sodium chloride). It aids in the identification of Staphylococcus species because these organisms can tolerate high saline levels and ferment mannitol, leading to a change in the color of the indicator.</p> Signup and view all the answers

<p>Staphylococcus aureus exhibits golden-yellow growth with beta-hemolysis and has smooth glistening colonies on Nutrient agar.</p> Signup and view all the answers