Fungal biochemical tests

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The following are some systems currently being used for the identification of yeasts:

  • Carbohydrate fermentation studies: This tests whether a certain yeast ferments different carbohydrates.
  • Carbohydrate assimilation studies: This test whether a yeast can utilize different carbohydrates as their sole source of carbon aerobically.
  • API 20C System: Freeze-dried sugars are placed into wells on a plastic strip, yeast basal medium suspended yeast is pippeted into wells, and incubated. Turbidity determines growth.
  • Uni-Yeast Tek System: Identifies yeasts based on their ability to ferment certain sugars
  • Vitek yeast Biochemical Card