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Question: Can you describe what happens when milk is converted into curd or yoghurt from your understanding of proteins?

Answer:

Like lactobacillus. These bacteria secrete lactic acid which changes the Ph of milk and proteins are very sensitive to change in Ph. So this changed Ph to destruction of secondary and tertiary structures of protein (called denaturation). Which leads to precipitation of milk proteins and lead to curd formation.

Milk has many globular proteins. Milk is converted into curd or yoghurt by action of bacteria.


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