Question Bank • QB_SUB_DFE_AWP_001 MCQ • 1 Mark

Section 7: Dairy and Food Engineering

Water Activity & Food Packaging

Subtopic: Modified Atmosphere Packaging gas functions

Question Statement:

In Modified Atmosphere Packaging (MAP) of fresh meat and horticultural foods, carbon dioxide ($CO_2$) is primarily included for its:

Options:

  • (A) Bacteriostatic and fungistatic antimicrobial activity
  • (B) Inert filler capacity to prevent package collapse
  • (C) Color enhancement of myoglobin pigment
  • (D) Catalytic oxidation of unsaturated fats

Answer Key:

A

Step-by-Step Solution & Explanation

$CO_2$ dissolves in food surface moisture forming carbonic acid, lowering local pH and inhibiting aerobic spoilage bacteria and fungi.
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