Question Bank • QB_SUB_APE_0247 MSQ • 2 Marks

Section 6: Agricultural Process Engineering

Rice Milling, Parboiling & Pulse Processing

Subtopic: Biochemical changes during paddy parboiling

Question Statement:

Which beneficial physico-chemical changes occur during hydrothermal parboiling of paddy?

Options:

  • (A) Complete starch gelatinization and healing of internal kernel micro-fissures
  • (B) Diffusion of water-soluble B-vitamins (thiamine, niacin) into the starchy endosperm
  • (C) Inactivation of lipolytic enzymes, improving bran storage stability
  • (D) Substantial decrease in whole kernel head rice recovery

Answer Key:

A, B, C

Step-by-Step Solution & Explanation

Parboiling gelatinizes starch (healing cracks and boosting HRY), migrates B-vitamins inward, and inactivates lipase enzymes in the bran.
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