Biology, asked by weloz2010, 3 months ago

How does the pH of the milk change when the milk becomes yoghurt?

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Answered by brainly8676
1

Answer:

The pH value of milk is 6 since it is acidic in nature. When the milk is converted into curd due to the action of bacteria, lactic acid is formed which is more acidic in nature. Therefore the pH value of the milk is reduced as it turns to curd.

Explanation:

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Answered by imsargi
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Yogurt is a product of the acidic fermentation of milk. The lactose in the milk is converted to lactic acid, which lowers the pH. When pH drops below pH 5, micelles of caseins, a hydrophobic protein, loses its tertiary structure due to the protonation of its amino acid residues.
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