Which category of fats is described as the most stable?

• A. Saturated fats
• B. Monosaturated fats
• C. Polysaturated fats
• D. Trans fats

Answer: (A)

Stability here means resistance to oxidation and breakdown during storage and cooking. Saturated fats have no carbon–carbon double bonds, so their molecules are straight and pack tightly, making them less reactive with oxygen and more resistant to heat. This gives them the greatest shelf stability and higher melting points. In contrast, fats with one or more double bonds introduce kinks and reactive sites that make them more prone to oxidation and rancidity, while trans fats, though somewhat more stable than cis fats, still don’t match the overall stability of fully saturated fats. So, the most stable category is saturated fats.