My watch list
my.bionity.com  
Login  

Casein nutrient agar



Casein Nutrient Agar (CN) is a growth medium used to culture isolates of lactic acid bacteria such as Streptococcus thermophilus and Lactobacillus bulgaricus. It is composed of standard nutrient agar with the added ingredient of skim milk powder, which contains casein. Lactic Acid Bacteria will precipitate casein out of the agar by lowering the pH. This will produce a cloudy appearance around the colonies that do this. This medium is not regarded as selective as it supports the growth of a wide variety of organisms.

References

  • University of Minnesota, Medical School. (2006). Biology of Microorganisms Laboratory Manual. 
 
This article is licensed under the GNU Free Documentation License. It uses material from the Wikipedia article "Casein_nutrient_agar". A list of authors is available in Wikipedia.
Your browser is not current. Microsoft Internet Explorer 6.0 does not support some functions on Chemie.DE