Which fat would be most susceptible to flavor reversion due to oxidative rancidity?

Which fat would be most susceptible to flavor reversion due to oxidative rancidity?

• A. Butter fat
• B. Coconut oil
• C. Soybean oil
• D. Olive oil

Answer: (C)

Oxidative rancidity targets fats with multiple double bonds. Lipids rich in polyunsaturated fatty acids are most prone to oxidation because each double bond is a site where oxygen can attack, starting lipid peroxidation and breaking down into volatile compounds that create off-flavors. Soybean oil is high in polyunsaturated fats (like linoleic and linolenic acids), so it oxidizes readily and develops stale, grassy, or cardboardy flavors quickly. Butter fat and coconut oil are dominated by saturated fats, which resist oxidation and flavor reversion, while olive oil has more monounsaturated fats with some polyunsaturates, making it less susceptible than soybean oil.

Oxidative rancidity targets fats with multiple double bonds. Lipids rich in polyunsaturated fatty acids are most prone to oxidation because each double bond is a site where oxygen can attack, starting lipid peroxidation and breaking down into volatile compounds that create off-flavors.

Soybean oil is high in polyunsaturated fats (like linoleic and linolenic acids), so it oxidizes readily and develops stale, grassy, or cardboardy flavors quickly. Butter fat and coconut oil are dominated by saturated fats, which resist oxidation and flavor reversion, while olive oil has more monounsaturated fats with some polyunsaturates, making it less susceptible than soybean oil.