Question

Which of the following lipids contain maximum amount of short and medium chain saturated fatty acids (g/100g)

• A. Ghee
• B. Lard
• C. Tallow
• D. Fish oil

Hint:

Bovine milk fat (ghee) is the only natural food fat containing significant amounts of butyric acid (C4:0). Detecting butyric acid is a standard method used to distinguish milk fat from other animal body fats and vegetable oils.

Answer 1

The Correct Option is A

Step 1: Understanding the Concept:
Saturated fatty acids are classified based on their carbon chain length into short-chain (C4 to C6), medium-chain (C8 to C12), and long-chain (C14 and above) fatty acids.
Different animal and marine lipids possess distinct fatty acid profiles reflecting their biological origin and metabolic pathways.

Step 2: Detailed Explanation:
Let us compare the fatty acid compositions of the given lipids:
- Ghee (anhydrous milk fat): Milk fat is unique among animal fats due to the presence of short and medium-chain fatty acids.
- Ruminant mammary gland cells synthesize short and medium-chain saturated fatty acids (specifically butyric C4, caproic C6, caprylic C8, capric C10, and lauric C12 acids) from acetate and \(\beta\)-hydroxybutyrate.
- These shorter fatty acids constitute approximately 10% to 15% of the total fatty acid profile of ghee, providing it with unique melting properties and digestibility.
- Lard (pig fat) & Tallow (beef/mutton body fat): These structural animal fats consist almost exclusively of long-chain saturated fatty acids (such as palmitic C16 and stearic C18) and monounsaturated fatty acids (oleic C18:1). They lack short-chain fatty acids entirely.
- Fish oil: Marine lipids are highly unsaturated, dominated by long-chain and very-long-chain polyunsaturated fatty acids (such as EPA and DHA) and contain negligible short or medium-chain saturated fatty acids.
Therefore, ghee contains the highest concentration of short and medium-chain saturated fatty acids.

Step 3: Final Answer:
The lipid containing the maximum amount of short and medium-chain saturated fatty acids is ghee.