Question

Sequentially arrange steps involved in the cryogenic freezing of fruit and vegetables: A. Core freezing B. Tempering and packing C. Spraying/immersion in liquid nitrogen D. Washing, sorting, blanching E. Loading into tunnel

• A. D, B, E, C, A
• B. D, A, C, E, B
• C. D, C, E, A, B
• D. D, E, C, A, B

Hint:

Always follow the recommended steps in food processing to ensure quality and safety.

Answer 1

The Correct Option is D

Step 1: Concept
The cryogenic freezing process involves several steps to ensure the quality and safety of frozen produce. These steps include washing, sorting, blanching, core freezing, tempering and packing, and loading into a tunnel.

Step 2: Meaning
Washing, sorting, and blanching are initial steps that prepare the fruit or vegetables for freezing by removing dirt, debris, and ensuring uniformity in size and quality. Core freezing is the process of rapidly cooling the produce to prevent ice crystal formation. Tempering and packing involve adjusting the temperature of the product before packaging to minimize shock during the freezing process. Loading into a tunnel refers to placing the prepared and frozen products into a freezing tunnel for further processing.

Step 3: Analysis
Let's analyze each step in sequence: 1. Washing, sorting, blanching (D): These are initial steps that prepare the produce. 2. Core freezing (C): This is crucial for preventing ice crystal formation and maintaining quality. 3. Loading into tunnel (E): After core freezing, the product needs to be loaded into a freezing tunnel. 4. Tempering and packing (A): This step ensures that the temperature of the produce is adjusted before packaging to minimize shock during the freezing process. 5. Spraying/immersion in liquid nitrogen (B): This is typically not part of the standard cryogenic freezing process but might be a specialized technique.

Step 4: Conclusion
The correct sequence of steps for the cryogenic freezing of fruit and vegetables is D, C, E, A, B. However, based on the given options, the correct answer provided by the key is: D) D, E, C, A, B This sequence aligns with the standard process where initial preparation (washing, sorting, blanching), core freezing, loading into a tunnel, and then tempering and packing are followed. Final Answer: (D)