Question

Fresh milk has a pH of 6.When it changes into curd (youghurt) will its pH increase or decrease.Why?

Answer 1

the ph range of curd is in between 4.5 to5.5.
So that means it decreases.

And it is acidic as the bacteria lactobacillus make the curd acidic which containing a little amount of lactic acid and tartaric acid.

Answer 2

Fresh milk has a pH of 6. When it changes into curd (youghurt) will its pH increase or decrease. Why?

The pH will decrease.

• This is because when milk is set into curd lactic acid is produced.