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Food Science and Technology QUESTION #5874
Question 1
The Methylene Blue Reduction Test (MBRT) estimates milk quality by measuring:
  • Somatic cell count
  • Fat content
  • Bacterial metabolic activity that decolorizes methylene blue✔️
  • Antibiotic residues
Correct Answer Explanation
MBRT is a reductase test. Bacterial enzymes reduce methylene blue (blue) to leucomethylene blue (colorless). Faster decolorization indicates higher bacterial load and poorer milk quality.