Bacillus Cereus Agar View larger
     Bacillus Cereus Agar

Bacillus Cereus Agar

Buy Brand Alpha Bioscience Bacillus Cereus Agar, Model B02-101-500g~ea online. Food Production,Chemicals,Chemicals : Dehydrated Culture Media,Dehydrated Culture Media

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Bacillus Cereus Agar

Bacillus Cereus Agar

Bacillus Cereus Agar is a selective medium for the detection, isolation and quantification of Bacillus cereus in foods. In this medium, the low Peptone level and the addition of Sodium Pyruvate improve egg yolk precipitation, thus enhancing bacterial sporulation. The selective agent Polymyxin B suppresses the growth of most bacteria but allows that of B. cereus. Typical Bcereus colonies are crenated, filamentous and peacock-blue, surrounded by a precipitate due to the hydrolytic activity of the enzyme lecitinase on the egg yolk suspension. After 48 hours of incubation, the center of the colony presents a grayish color. The pH indicator Bromothymol Blue detects mannitol utilization by other bacteria of the Bacillus group, which unlike Bcereus form yellow colonies on this medium. Other egg yolk-reacting microorganisms able to grow on this medium such as Staphylococcus aureusSerratia marcescens or Proteus vulgaris can be distinguished from Bcereus by the color and shape of their colonies, as well as by the presence of a lightening reaction on the egg yolk.  There is a choice of 3 sizes - 500g, 2kg, and 10kg.

PREPARATION: Mix 41 grams of the medium in 950 mL of purified water with repeated stirring to dissolve completely. Distribute and autoclave at 121°C for 15 minutes. After cooling to 45-50ºC add 50 mL of sterile egg yolk suspension and 2mL of a filter sterilized solution of Polymyxin B Sulfate (100,000 units).

Additional Literature:

B02-101 Product Information

B02-101 Safety Data Sheet

 

Description

Product code: Bacillus Cereus Agar
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Bacillus Cereus Agar