artificial media (synthetic)

artificial media (synthetic)

1. according to how much is the media contents known

   • chemically defined media
   • complex
     • digested animal organs

2. according to physical status

   • solid (high %agar)
   • liquid (no agar)

3. according to purepose

   • enriched media (rich amount of special nutrients)
     • blood agar(agar+5%sheep blood)
     • chocolate agar(agar+5%sheep blood +hemoglobin is readily accessible)
   • selective (select one type of microorganism)
     • bismuth sulfite (selective for salmonella typhoid from faces )
     • sabraud+dextrose (select fungi );PH6.5
   • differential (differentiate between types of microorganisms in same specimen)
     • thioglycerate broth (to differentiate between microbes according to oxygen need)
   • diferential + selective
     • macconky agar
       • inhibit gram positive and selecting gram negative
       • differentiate between types of gram negative
     • mannitol salt(NaCl 7.5%)
       • selective for staphylococci
       • differentiate between taphylococcus aureus from other