Description

M 17 Broth is a medium used in dairy industry for the cultivation and enumeration of lactic Streptococci (S. cremoris, S. lactis, S. diacetylactis) and their bacteriophages. It is used to study the phenomenon of lysogenicity and morphology of the plaques.

The medium has a good use for the cultivation and enumeration of Streptococcus thermophilus in yogurt, since the sodium glycerophosphate present in the medium, maintaining a pH value greater than 5.5, inhibits the growth of Lactobacillus bulgaricus, which finds the optimal growth conditions with that pH value.

Packing:

• Cod. B70.119 Pack. 5 Kg
• Cod. 70.119 Pack. 500 g
• Cod. 71.119 Pack. 100 g

Bibliography:

• ISO 7889:2003 (IDF 117:2003) Yogurt. Enumeration of characteristic microrganisms. Colony count technique at 37 degrees
• ISO 9232 / IDF 146. Février 2003. Yaourt. Identification des micro-organismes caractéristiques (Lactobacillus delbrueckii subsp. bulgaricus et Streptococcus thermophilus).