Question

The BR reading of ghee normally varies from ________

• A. 50-56
• B. 41-43
• C. 38-40
• D. 28-30

Hint:

Remember key quality parameters for milk and milk products as they are frequently tested. For ghee, the BR reading (40-44 at 40°C) and Reichert-Meissl (RM) value (minimum 28) are the most important ones to memorize.

Answer 1

The Correct Option is B

Step 1: Understanding the Concept:
The Butyro-refractometer (BR) reading measures the refractive index of fats and oils, serving as a quality and purity test for ghee. This reading is standardized at 40°C.
Step 2: Detailed Explanation:
Pure ghee, derived from either cow or buffalo milk, exhibits a specific refractive index. Adulteration with cheaper oils or fats alters this index.
According to FSSAI standards, the acceptable BR reading for ghee at 40°C ranges from 40.0 to 44.0.
Analyzing the options:
50-56: Too high.
41-43: Falls within the acceptable range of 40-44.
38-40: Lower end below the minimum standard of 40.0.
28-30: Far too low.
Step 3: Final Answer:
The standard BR reading for ghee at 40°C is 40-44. Therefore, 41-43 is the best option.