Allied & ICAR Exam Bank • ALLIED_0744 MCQ • 1 Mark

Section 7: Dairy and Food Engineering

Refrigeration and Freezing

Subtopic: Refrigeration and Freezing

Question Statement:

In food cold chains, 'chill injury' in tropical produce (e.g., bananas, tomatoes, mangoes) occurs when stored at:

Options:

  • (A) Temperatures above freezing ($5-12^\circ\text{C}$) that are below critical threshold temperatures, causing metabolic dysfunction and skin browning
  • (B) $-20^\circ\text{C}$
  • (C) $30^\circ\text{C}$
  • (D) $100^\circ\text{C}$

Answer Key:

A

Step-by-Step Solution & Explanation

Tropical and subtropical commodities suffer membrane phase transitions and ion leakage at low non-freezing temperatures (
lt; 10-12^\circ\text{C}$).
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