They are seldom motile and are non-sporing. They are also catalase positive and often oxidase positive, although weakly. Micrococci may be distinguished from staphylococci by a modified oxidase test23,24. Their colonies are usually pigmented in shades of yellow or red and grow on simple media.

How can you differentiate between Staphylococcus and Micrococcus?

They are seldom motile and are non-sporing. They are also catalase positive and often oxidase positive, although weakly. Micrococci may be distinguished from staphylococci by a modified oxidase test23,24. Their colonies are usually pigmented in shades of yellow or red and grow on simple media.

Is Micrococcus luteus methyl red positive?

(2000) investigated that Micrococcus luteus was positive to urease and methyl red, while negative to indole formation, nitrate reduction and Voges Proskauer.

What is the morphology of Kocuria rhizophila?

Kocuria is a Gram-positive cocci arranged in pairs, short chains, tetrads, cubical packets of eight and irregular clusters.

Is Kocuria rhizophila catalase positive?

Kocuria rosea is a non-spore-forming, aerobic, oxidase-negative, catalase-positive, Gram-positive coccoid bacterium which grows as circular, smooth, pinkish colonies on nutrient agar.

What test determine Micrococcus luteus?

The oxidase test tests to see if the microbe contains cytochrome c oxidase. The catalase test tests to see if the microbe contains catalase.

What is the colony morphology of Micrococcus luteus?

Colony Morphology: Colonies are circular, yellow, convex and smooth.

Is micrococcus Roseus Gram-positive or negative?

Micrococcus roseus is a gram positive bacterial cell that grows in the tetrad arrangement. The normal habitat for this Micrococcus species is skin, soil, and water. It derives its name from the carotenoid pigment that it secretes.

What does micrococcus Roseus cause?

Micrococcus species, members of the family Micrococcaceae, are usually regarded as contaminants from skin and mucous membranes. Nevertheless they have been documented to be causative organisms in cases of bacteremia, endocarditis, ventriculitis, peritonitis, pneumonia, endophthalmitis, keratolysis and septic arthritis.

Is Kocuria Rhizophila a pathogen?

Kocuria rosea is an aerobic, gram-positive coccus that is generally considered as a non-pathogenic commensal that colonizes the oropharynx, skin, and mucosa. Nonetheless, it can cause an opportunistic infection in immunocompromised patients [3].

What is the arrangement of Micrococcus luteus?

luteus is found in soil, dust, water, and in human skin flora. It has also been isolated from foods such as milk and goat’s cheese. This bacterium is often arranged in circular tetrads and forms bright yellow colonies on nutrient agar.

Is Micrococcus luteus a pathogen?

Micrococcus luteus is considered a non-pathogenic saprophyte of human skin and eye. Disease in man caused by this organism is not recorded in medical literature.