Question

Which type of ghee has more number of larger grains under given granulation conditions?

• A. Cow milk ghee
• B. Buffalo milk ghee
• C. Mixed ghee
• D. Recombined milk ghee

Hint:

To remember the crystallization properties of ghee:
- Buffalo ghee = Higher saturated fat content \(\rightarrow\) Higher melting point \(\rightarrow\) Rapid crystallization \(\rightarrow\) Larger, more abundant grains.
- Cow ghee = Higher unsaturated fat content \(\rightarrow\) Lower melting point \(\rightarrow\) Slower crystallization \(\rightarrow\) Smaller grains.

Answer 1

The Correct Option is B

Step 1: Understanding the Concept:
Granulation is a highly desirable physical property of ghee that serves as a direct indicator of its purity and quality.
The process of granulation involves the slow crystallization of higher-melting-point saturated glycerides dispersed within a continuous liquid fat phase.
The rate of crystallization, the size of the grains, and the overall quantity of crystals are heavily influenced by the fatty acid composition of the milk fat.

Step 2: Detailed Explanation:
Let us analyze the differences in fatty acid profiles between cow and buffalo milk fats:
- Buffalo milk fat contains a significantly higher proportion of long-chain saturated fatty acids, particularly palmitic acid and stearic acid.
- Consequently, buffalo ghee has a higher content of high-melting-point triglycerides (such as trisaturated glycerides) compared to cow ghee.
- Because of this higher concentration of high-melting-point glycerides, buffalo ghee crystallizes more readily and rapidly under standard cooling conditions.
- The crystallizing triglycerides in buffalo ghee form a robust, dense crystal network that results in larger, more distinct grains.
- Conversely, cow ghee contains a higher concentration of low-melting-point unsaturated fatty acids and short-chain volatile fatty acids.
- This composition leads to a lower melting point, slower crystallization rates, and smaller, less defined grains under identical cooling conditions.
- Mixed ghee and recombined milk ghee do not exhibit the same level of rapid and extensive crystal growth due to their modified or irregular triglyceride distributions.
Therefore, buffalo milk ghee produces a larger number of bigger grains during the granulation process.

Step 3: Final Answer:
Buffalo milk ghee forms a greater number of larger grains under given granulation conditions due to its higher content of high-melting-point saturated fatty acids.