Question

milk goes. sour by lactobacillus bacteria if its ph falls below

Answer 1

Answer: yes , its ph will fall.

Explanation: because milk goes sour due to lactobacillus bacteria its ph will fall as it became more acidic.

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Answer 2

Formation of Lactic Acid

Explanation:

If pH < 7 it is known as an acidic solution.

If pH > 7 it is known as the basic solution.

• Natural pH of milk = 6.6 to 6.8, it is near neutral pH of seven. This pH technically is not acid scale, acids are known to be sour
• However, due to the growth of lactobacillus bacteria in the milk lactose present in it starts converting to lactic acid and thus the pH starts dropping
• As the pH drops down it makes the milk more acidic