Question

The approximate yield of ghee in kg from 100 kg buffalo milk is

• A. 9.0
• B. 4.0
• C. 6.5
• D. 5.0

Hint:

Remember the typical fat percentages for common milk types: Buffalo milk (6-8%) and Cow milk (3.5-5%). This will help you quickly estimate yields of fat-based products like butter and ghee.

Answer 1

The Correct Option is C

Step 1: Understanding the Concept:
The yield of ghee from milk depends primarily on the fat content of the milk. Buffalo milk is known for its high-fat content compared to cow milk.
Step 2: Key Formula or Approach:
Ghee yield can be estimated based on the average fat percentage in the milk and the efficiency of the conversion process.
Ghee is essentially pure milk fat (clarified butter). The formula is:
\[ \text{Ghee Yield} \approx (\text{Weight of Milk}) \times (\text{Fat \%}) \times (\text{Recovery Efficiency}) \]
Step 3: Detailed Explanation:
1. Fat Content: Buffalo milk typically has a fat content ranging from 6% to 8%, with an average often considered around 7%.
2. Calculate Fat Mass: For 100 kg of buffalo milk with an average fat content of 7%, the total fat available is:
\[ 100 \, \text{kg} \times \frac{7}{100} = 7 \, \text{kg of fat} \]
3. Ghee Recovery: Not all fat can be converted into ghee. There are losses of moisture and solids-not-fat (SNF) during the clarification process. The recovery rate is typically around 90-93%. Let's assume a recovery rate of 92%.
4. Calculate Ghee Yield:
\[ \text{Yield} = 7 \, \text{kg of fat} \times 0.92 \approx 6.44 \, \text{kg} \]
This calculated value of 6.44 kg is very close to the option 6.5 kg. Therefore, 6.5 kg is the most appropriate answer representing the approximate yield.
Step 4: Final Answer:
The approximate yield of ghee from 100 kg of buffalo milk is 6.5 kg.