Question

What's the difference with casein broth and peptone broth?

Answer 1

Casein broth is used to detect hydrolytic organisms. It's a agar supplemented with skim milk is a source of casein. It appears opaque,with a precipitate, and white to half white in color. It is stored between 2-8 degree Celsius away from direct light.

Peptone broth is composed of peptic digest of animal tissue and sodium chloride. It is used in the cultivation of fastidious organisms. Appears as a cream to light yellowish homogeneous free flowing powder. It's stored at 30 degree Celsius in a tight closed container.