Allied & ICAR Exam Bank • ALLIED_1332 MCQ • 1 Mark

Section 7: Dairy and Food Engineering

Dairy Unit Operations

Subtopic: Butter Churning

Question Statement:

During the mechanical churning of dairy cream, phase inversion occurs when:

Options:

  • (A) Oil-in-water emulsion of cream inverts into a water-in-oil emulsion of butter, separating buttermilk
  • (B) Milk fat turns into gas
  • (C) Lactose crystallizes into sandiness
  • (D) Skim milk precipitates as curd

Answer Key:

A

Step-by-Step Solution & Explanation

Mechanical concussion ruptures fat globule membrane complexes; released liquid fat cements neighboring globules into butter grains, inverting the continuous phase from aqueous serum to continuous fat matrix.
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