Biochemical properties

BIOCHEMICAL PROPERTIES
  • Streptococci are catalase and oxidase negative . (Click here for visual - catalse test)
  • Ferment several sugars producing acid but no gas.
  • They ferment sorbitol, trehalose, lactose, maltose, dextrin, and mannitol.
  • Gelatin not liquified.
  • Nitrates not reduced.
  • Indole is negative.
  • They are not soluble in 10% bile unlike pneumococci

Last modified: Monday, 4 June 2012, 4:10 AM