Question

Physical method of fruit juice preservation includes:
(A) Refrigeration
(B) Salt addition
(C) Sugar addition
(D) Pasteurization

• A. (A) and (D) only
• B. (A), (B), and (C) only
• C. (A), (B), (C), and (D)
• D. (B), (C), and (D) only

Answer 1

The Correct Option is A

To determine the physical methods of fruit juice preservation, we must identify which techniques listed are physical processes.

• Refrigeration (A): This is a physical method that involves cooling the juice to slow down the activity of microorganisms.
• Salt addition (B): This is a chemical method as salt alters the chemical environment of the juice.
• Sugar addition (C): Similar to salt, adding sugar is a chemical method as it changes the osmotic balance, not a physical process.
• Pasteurization (D): A physical method involving heating the juice to eliminate microorganisms.

In conclusion, the physical methods are Refrigeration (A) and Pasteurization (D). Thus, the correct answer is: (A) and (D) only.

Answer 2

Correct Answer: (1) (A) and (D) only

The physical methods of fruit juice preservation include refrigeration and pasteurization.

Refrigeration slows down the microbial growth and enzymatic activity, helping to preserve the freshness of the juice for a longer time.

Pasteurization involves heating the juice to a specific temperature for a certain period, killing harmful microorganisms without significantly affecting the flavor or nutritional value of the juice.

Salt and sugar addition are chemical methods of preservation, not physical methods.