Isolating B. cereus

Tim Steffens tims at
Wed Dec 10 10:14:16 EST 1997

In article <m.steven-0812970809430001 at>, m.steven at
(Alexandra Steven) wrote:

> In article <66c46e$tma$1 at>, ballanty at
> (John A Ballantyne) wrote:
> > Hi everyone,
> > 
> > I was wondering if someone could recomend a protocal to isolate B. cereus 
> > from mouse fecal droppings.
> Australian Standard method uses enrichment in TSB + polymixin and plating
> onto PPEMBA - very pretty "peacock blue" colonies on lime green agar!
> Vicki

Try using MYP, Mannitol Yolk Polymyxin B, agar (a standard method for
detecting B. cereus in Foods). There is a commercial formulation from
DIFCO. It is both selective and differential for B.c. (i.e. Polymyxin B
resistant, no mannitol fermentation, and lecithinase positive).

Tim Steffens                      | The tragedy of life doesn't lie
   Lab. Matrls. Super.            | in not reaching your goal. The
University of Idaho               | tragedy lies in having no goal to
   Dept. MMBB                     | reach.--By Benjamin Mays
 Phone (208) 885-8953             |e-mail:  tims at
 Fax   (208) 885-6518             |         Sturff (AOL)        

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