Question

Buffalo ghee is harder than cow ghee because buffalo ghee contains

• A. Larger proportion of long chain saturated fatty acids
• B. Larger proportion of short chain triglycerides
• C. Smaller proportion of long chain saturated fatty acids
• D. Smaller proportion of short chain triglycerides

Hint:

Fat hardness is directly proportional to chain length and saturation. Since buffalo milk fat contains more saturated, long-chain fatty acids, it is harder at room temperature and exhibits a higher melting point than cow milk fat.

Answer 1

The Correct Option is A

Step 1: Understanding the Concept:
The physical hardness, melting point, and texture of fat products like ghee are determined by their triglyceride and fatty acid composition.
Fatty acids with longer carbon chains and higher saturation levels have higher melting points, whereas shorter chains or double bonds (unsaturation) lower the melting point, making the fat softer or liquid at room temperature.

Step 2: Detailed Explanation:
Let us compare the chemical composition of cow milk fat and buffalo milk fat to explain their physical differences:
- Cow ghee: Contains higher proportions of lower-melting-point fatty acids, including short-chain fatty acids (like butyric acid) and unsaturated fatty acids (like oleic acid). This composition results in a lower slip melting point (\(28\ ^{\circ}\text{C}\) to \(35\ ^{\circ}\text{C}\)) and a softer, more liquid-like consistency at room temperature.
- Buffalo ghee: Contains a significantly larger proportion of long-chain saturated fatty acids, particularly palmitic acid (C16:0) and stearic acid (C18:0).
- These long-chain saturated fatty acids have high melting points (palmitic acid melts at \(63\ ^{\circ}\text{C}\) and stearic acid melts at \(69\ ^{\circ}\text{C}\)).
- This composition gives buffalo milk fat a higher slip melting point (\(32\ ^{\circ}\text{C}\) to \(38\ ^{\circ}\text{C}\)), which contributes to the harder, firmer, and more distinctly granular body of buffalo ghee at room temperature.
Therefore, buffalo ghee is harder than cow ghee because of its larger proportion of long-chain saturated fatty acids.

Step 3: Final Answer:
Buffalo ghee is harder than cow ghee due to a larger proportion of long chain saturated fatty acids.