Does Staphylococcus aureus use oxygen?
Staphylococcus aureus is a gram-positive facultative aerobe that can grow in the absence of oxygen by fermentation or by using an alternative electron acceptor.
Is Staphylococcus aureus anaerobic?
Although S. aureus is a facultative anaerobic bacterium, the growth rate was drastically reduced after the shift from aerobic to anaerobic growth conditions.
What does Staphylococcus aureus need to grow?
S. aureus is a facultative anaerobe that grows by aerobic respiration or by fermentation, which yields principally lactic acid. The bacterium metabolizes glucose via the pentose phosphate pathway (Reizer et al., 1998).
What is the most efficient way to identify Staphylococcus aureus?
Coagulase testing is the single most reliable method for identifying Staphylococcus aureus . Coagulase production can be detected using either the slide coagulase test (SCT) or the tube coagulase test (TCT).
How do you manage Staphylococcus aureus?
Management includes removal of the focus of S. aureus (e.g., abscess drainage or tampon removal) and use of a betalactamase–resistant antistaphylococcal antibiotic in combination with clindamycin, which has the potential of reducing toxin production.
What do you need to know about Staph aureus?
Staphylococcus aureus in Healthcare Settings. General Information about Staphylococcus aureus. Staphylococcus aureus [staf I lō-kok is aw ree us] (staph), is a type of germ that about 30% of people carry in their noses. Most of the time, staph does not cause any harm; however, sometimes staph causes infections.
What kind of environment does Staphylococcus aureus live in?
Staphylococcus aureus grows best in an aerobic (oxygen-rich) environment but it can also live in anaerobic conditions (without oxygen). The bacterium has a diameter of about 0.8 µm, 60 times smaller than a hair’s breadth. S. aureus can also cause food poisoning.
What are the oxygen requirements for pathogenic bacteria?
Oxygen Requirements for Pathogenic Bacteria. Obligate anaerobes: These bacteria grow only under condition of high reducing intensity and for which oxygen is toxic. Clostridium perfringens, Clostridium botulinum etc. Facultative anaerobes: They are versatile organisms, capable of growth under both aerobic and anaerobic conditions.
What should the temperature be to kill Staphylococcus aureus?
The temperature range for growth of S. aureus is 7–48°C, with an optimum of 37°C. S. aureus is resistant to freezing and survives well in food stored below -20°C; however, viability is reduced at temperatures of -10 to 0°C. S. aureus is readily killed during pasteurisation or cooking.
What are facts about staph?
Staphylococcus (“staph”) are a common group of bacteria. Some types of staph normally live on people’s skin and in the environment and don’t cause disease. Other types of staph, particularly Staphylococcus aureus , can cause serious infections.
What are the types of Staphylococcus?
Staphylococcal infections (often shortened to Staph) mainly affect the skin. Two common types are Staphylococcus epidermis and Staphylococcus aureus. They usually cause mild infections, but these can be more serious in people with cancer.
What are the characteristics of Staph aureus?
Physical Characteristics of Staphylococcus aureus . Staphylococcus aureus is a Gram-positive bacteria with a thin capsule and a thick cell wall. It is a spherical bacteria with a diameter of about 1 micron.
What is Staphylococcus in microbiology?
Staphylococcus aureus is a Gram-positive, round-shaped bacterium that is a member of the Firmicutes , and it is a usual member of the microbiota of the body, frequently found in the upper respiratory tract and on the skin. It is often positive for catalase and nitrate reduction and is a facultative anaerobe that can grow without the need for oxygen.