Question

The isoelectric pH of casein is:

• A. 3.6
• B. 5.6
• C. 4.6
• D. 6.6

Hint:

Understanding the isoelectric point of casein is crucial for optimizing dairy product formulations.

Answer 1

The Correct Option is C

The isoelectric pH of casein, the major protein in milk, is 4.6. At this pH, casein molecules lose their net charge, leading to aggregation and precipitation. This property is utilized in processes like cheese-making and acid coagulation of milk.