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Gissa's medium is used for the differentiation of microorganisms on the ability to ferment sugars and alcohols. The medium indicator, bromocresol purple, during fermentation of the carbohydrate (alcohol) and acid secretion changes color from purple to yellow, which indicates the ability of bacteria to ferment the carbohydrate (alcohol). The semi-solid medium, seeding method is "pricking" a microbiological loop. The tubes are incubated at 37 ° C for 24 hours, then evaluate the color change.

The medium contains only one specific carbohydrate or alcohol. Now, LLC "Farmaktiv" produces 12 kinds of medium gissa with the following components:

  • arabinose


  • glucose


  • dulcitol


  • inositol


  • xylose


  • lactose


  • maltose


  • mannitol


  • mannose


  • rhamnose


  • sucrose


  • sorbitol