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

Casein, the primary protein in milk, has an isoelectric pH of 4.6. At this specific pH, casein molecules become electrically neutral, causing them to aggregate and precipitate. This characteristic is leveraged in processes such as cheese-making and the acid-induced coagulation of milk.