selective media for cryptococcus neoformans

Robert Randolph rrrandolph at
Fri Jun 12 08:15:57 EST 1998

The active ingredient in Bird Seed Agar is Caffic Acid.  Add 1 gm.
Caffic Acid to any general yeast isolation media and look for brown
colonies. I would not use a C&C medium, as the literature indicates
some inhibition of C.neoformans by cycloheximide.  

The prepared medium, Caffic AcidAgar, is available with Saproxin as a
saprophytic fungal inhibitor in a BHI (low pH) media from Randolph
Biomedical - 401-826-1407 * microbiology at

R.Randolph * microbiology at

On Wed, 10 Jun 1998 10:26:51 GMT, b.muller at (Ben Muller)

>On Thu, 04 Jun 1998 23:46:35 -0700, Phil <jorge2 at> wrote:
>>sandra wrote:
>>> I am looking for the formule of a selective media for cryptococcus
>>> neoformans of saprophytic origin, it is called Niger seed agar or Guizotia
>>> abyssinica medium. I will also welcome any other alternative and selective
>>> media for this organism. many thanks.
>>> Sandra
w_wallis at

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