What causes milk to sour?

1 Answer
Saif Rabbani
Feb 8, 2017

The bacteria lactobacillus -_-

Explanation:

It produce some chemicals which convert the milk sugar into lactic acid. Which is the cause of sourness :)

Related questions
See all questions in Chemical Reactions and Equations
Impact of this question
2793 views around the world
You can reuse this answer
Creative Commons License