Question

Which one of the following method is cost effective for dairy starter production with highest cell viability and purity?

• A. Freeze-drying
• B. Spray drying
• C. Vacuum drying
• D. Sun drying

Hint:

Freeze-drying: best for starter cultures.
High viability and purity.
Cost-effective for long-term storage.

Answer 1

The Correct Option is A

Step 1: Understanding the Concept:
Dairy starter cultures need to be preserved with high viability.
Different drying methods have different effects.
Step 2: Key Formula or Approach:
No specific formula.
Need to know the methods for starter culture preservation.
Step 3: Detailed Explanation:
Freeze-drying (lyophilization) is cost-effective.
It provides highest cell viability and purity.
Spray drying causes heat damage.
Vacuum drying is less effective.
Sun drying is not suitable.
Thus, freeze-drying is the best method.
Step 4: Final Answer:
Freeze-drying is cost-effective with highest viability and purity.
Hence, the correct option is (A). \bigskip