Step 1: Understanding the Concept:
Khoa (or Khoya) is a partially dehydrated whole milk product. Its yield primarily depends on the Total Solids (TS) content of the milk used. Buffalo milk is preferred for Khoa production because of its higher TS content compared to cow milk.
Step 2: Key Formula or Approach:
The approximate yield of Khoa can be estimated based on the average Total Solids content of the milk.
\[ \text{Yield of Khoa} \approx \text{Weight of Milk} \times \frac{\text{Total Solids \% in milk}}{\text{Total Solids \% in Khoa}} \times 100 \]
A simpler estimation is that the yield is typically a percentage of the initial milk weight, reflecting the concentration of solids.
Step 3: Detailed Explanation:
Buffalo milk has an average Total Solids (TS) content of about 16-18%.
Khoa has a Total Solids content of about 70-75%.
During the process of making Khoa, a significant amount of water is evaporated until the milk solids are concentrated.
The general conversion ratio for buffalo milk to Khoa is approximately 5:1, meaning 5 kg of milk yields 1 kg of Khoa. This corresponds to a yield of about 20%.
So, for 100 kg of buffalo milk, the yield would be:
\[ 100 \, \text{kg} \times \frac{1}{5} = 20 \, \text{kg} \]
Or, based on typical industrial yields, the recovery is often around 20-22 kg of Khoa per 100 kg of buffalo milk.
Among the given options, 22 kg is the most accurate and commonly cited yield.
Step 4: Final Answer:
Based on the high total solids content of buffalo milk, the typical yield of Khoa is around 22 kg per 100 kg of milk.