Question

Which bacteria is responsible for the formation of curd?
A) Lactic acid bacteria
B) Lactic bateria
C) Lactobacillus aureus
D) Bacillus radicicola

Answer 1

❗❗option (C) is the answer of your question ❗❗

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Answer 2

The correct answer is : C) Lactobacillus aureus.

Explanation:

• Milk contains the carbohydrate lactose,  globular protein called casein and water.
• Milk is transformed to curd by the process known as Fermentation.
• The bacteria use its specific enzymes to utilise the lactose in the milk as its energy source.
• The enzymatic reaction produces lactic acid as a byproduct.
• This lactic acid reacts with the casein protein in milk thereby denaturing (destroying its tertiary and quaternary structure) it.
• The denatured protein coagulates to form the thick curd.