Fungal Biochemical Tests - AbsoluteAstronomy.com

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

Yeast

Yeasts are eukaryotic micro-organisms classified in the kingdom Fungi, with 1,500 species currently described estimated to be only 1% of all fungal species. Most reproduce asexually by mitosis, and many do so by an asymmetric division process called budding...

Carbohydrate fermentation studies:
- This tests whether a certain yeast ferment
  Fermentation (biochemistry)
  Fermentation is the process of extracting energy from the oxidation of organic compounds, such as carbohydrates, using an endogenous electron acceptor, which is usually an organic compound. In contrast, respiration is where electrons are donated to an exogenous electron acceptor, such as oxygen,...
  
  s different carbohydrate
  Carbohydrate
  A carbohydrate is an organic compound with the empirical formula ; that is, consists only of carbon, hydrogen, and oxygen, with a hydrogen:oxygen atom ratio of 2:1 . However, there are exceptions to this. One common example would be deoxyribose, a component of DNA, which has the empirical...
  
  s.

Carbohydrate assimilation studies:
- This test whether a yeast can utilize different carbohydrates as their sole source of carbon aerobically.

API 20C System
- Freeze-dried sugar
  Sugar
  Sugar is a class of edible crystalline carbohydrates, mainly sucrose, lactose, and fructose, characterized by a sweet flavor.Sucrose in its refined form primarily comes from sugar cane and sugar beet...
  
  s are placed into wells on a plastic strip, yeast basal medium suspended yeast is pippeted into wells, and incubated. Turbidity
  Turbidity
  Turbidity is the cloudiness or haziness of a fluid caused by individual particles that are generally invisible to the naked eye, similar to smoke in air. The measurement of turbidity is a key test of water quality....
  
  determines growth.

Uni-Yeast Tek System
- Identifies yeasts based on their ability to ferment certain sugars

Vitek yeast Biochemical Card

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