Streptococci and Enterococci - Columbia

The different streptococcal species are all catalase negative and are generally identified in the laboratory by a number of biochemical tests that are summarized in the table below (+ = positive, – = negative, S = susceptible, R = resistant). Species Optochin disk Bacitracin disk Growth in 6.5% NaCl Hydrolyze Bile-Esculin Hippurate hydrolysis

  Columbia, Catalase, Streptococci, Streptococci and enterococci, Enterococci