Sunflower oil is a common edible oil that comes from the seeds of the sunflower plant. It has many uses, including cooking, salad dressings, and margarine. Here are some characteristics of sunflower oil: Composition Sunflower oil is made up of linoleic acid, a polyunsaturated fat, and oleic acid, a monounsaturated fat. The proportion of these fatty acids can vary depending on the manufacturing process and selective breeding. Antioxidants Sunflower oil contains natural antioxidants, such as phenolic compounds, α-tocopherols, and γ-tocopherols. These compounds help protect cell membranes from oxidative stress. Uses Sunflower oil is often used for frying, roasting, and stir-frying because of its high smoke point. It can also be used as a substitute for butter in baking. Types Sunflower oil can be refined or unrefined. Refined oils are more stable, while unrefined oils have a stronger flavor. Nutritional value Sunflower oil is a good source of vitamins E and K. A tablespoon of refined sunflower oil contains 120 calories, 14 grams of fat, and no carbohydrates, fiber, or sugar.