Question

What will happen if you add buttermilk to chilled milk?

SCERT Class 8 Telangana, Biology Chapter 3 Story of Microorganisms

Answer 1

Buttermilk is made from curd. Usually if curd is added to milk, then it also changes to curd due to action of bacterium Lactobacillus. So, the same process would have taken place if buttermilk is added to milk. But here the milk is chilled, so at this temperature growth of Lactobacillus is prevented, so no formation of curd takes place but when chilled milk comes to normal room temperature, it will become curd.

Answer 2

The chilled milk will remain in original condition for a long time until ìits temperature remains low because fermentation process stops in low temperature and goes well in warm conditions. Fermentation will start when chilled milk melts and it will change into buttermilk or curd. Its taste will change slowly from normal to sour.