Is Enterococcus faecalis urease positive or negative?
Biochemical Test and Identification of Enterococcus faecalis
|Nitrate Reduction||Positive (+ve)|
Does Enterococcus faecalis have urease?
Escherichia coli and Enterococcus faecalis are commonly considered urease-negative bacteria.
Is Enterococcus catalase positive or negative?
It is generally agreed that the genus Enterococcus comprises gram-positive cocci that are catalase negative, usually facultative, anaerobic bacteria that grow in 6.5% NaCl, 40% bile salts, and 0.1% methylene blue milk and at pH 9.6. They grow at 10 and 45°C and can resist 30 min at 60°C (20, 52, 53).
Does Enterococcus ferment glucose?
Lactate is the major end product of enterococcal fermentation during growth on excess glucose under reducing conditions.
Is Enterococcus faecalis bile-esculin test?
Enterococcus faecalis hydrolyzes esculin in the presence of bile and turns more than half the medium dark brown. This is a positive result. Streptococcus pyogenes does not hydrolyze esculin in the presence of bile. No dark brown complex is formed.
Is Enterococcus faecalis beta-hemolytic?
E. faecalis are non-hemolytic on sheep blood agars but are beta-hemolytic on media containing rabbit, horse and human blood.
Is Enterococcus gamma hemolytic?
Enterococcus faecalis (formerly called Group D Streptococci) displays gamma hemolysis.
Is Enterococcus catalase negative?
E. faecalis cells have generally been considered to be catalase negative (23) but may appear weakly positive for catalase under some conditions.
Are Enterococcus lactose fermenters?
E. faecalis can be cultivated on purple agar and ferments lactose under acid production (see Fig.
Does Enterococcus faecalis produce acid?
Enterococcus faecalis is a versatile lactic acid bacterium, growing in a number of environments, including the gastrointestinal tracts of humans and animals (1, 2). This species is often associated with food but is also associated with nosocomial disease causing sepsis, endocarditis, and urinary tract infections (3–5).
Is Enterococcus bile esculin positive or negative?
Enterococcus faecalis hydrolyzes esculin in the presence of bile and turns more than half the medium dark brown. This is a positive result.