Question

Due to........, yoghurt acquires sour taste.
1)Proteins
2)lactic acid
3)lactose
4)acetic acid

Answer 1

"Due to the Lactic acid, yoghurt acquires sour taste. Therefore, Option 2 is the correct answer.

The bacteria used to make yogurt are called the yogurt cultures.

Fermentation of lactose by these bacteria forms the lactic acid, which acts on milk protein to provide yogurt its texture and feature tart or sour flavor.

"

Answer 2

Yogurt acquires sour taste sour due to the presence of Lactic acid.  

Explanation:

Yogurt is the product which is obtained from milk and consists of water, protein, fat, and carbohydrate (lactose). Usually, yogurt contains lactose in limited quantity and this lactose is processed into lactic acid by the lactic acid bacteria.

When this conversion is made, the lactose gets entirely converted into lactic acid. The production of lactic acid from lactose gives a sour taste to the yogurt.