Oils are composed of various fatty acids, and when heat is applied, the more unstable molecules begin to vaporize and oxidize. Once the oil smokes, the beneficial monounsaturated and polyunsaturated fats begin to break down, forming free radicals and trans fats.
Canola Oil Versus Other Vegetable Oils: Smoke Point Comparison
Refined canola oil, which undergoes significant processing to remove impurities, has a relatively high smoke point compared to unrefined alternatives because these impurities are the first to degrade and smoke. The neutral flavor of canola also ensures that it does not compete with the main ingredient.
This broad range exists because the exact point depends on the specific refinement process, the quality of the raw seeds, and how the oil is stored. The smoke point of canola oil refers to the specific temperature at which the oil begins to break down, producing visible smoke and a cascade of chemical changes that alter flavor and degrade beneficial compounds.
Canola Oil Versus Other Vegetable Oils and Their Smoke Points
Oil Type Smoke Point (°F) Smoke Point (°C) Refined Canola Oil 400 -- 450 204 -- 232 Extra Virgin Olive Oil 375 -- 410 190 -- 210 Coconut Oil 350 177 Butter 302 150 Impact on Nutrition and Health Exceeding the smoke point does more than ruin the aroma of a meal; it significantly impacts the nutritional profile of the oil. Because 400°F is well within the range of a standard home stovetop, you can confidently brown a chicken thigh or crisp a tofu stir-fry without worrying about the oil breaking down prematurely.
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