Sunflower oil is the non-volatile oil expressed from sunflower (Helianthus annuus) seeds. Sunflower oil is commonly used in food as a frying oil, and in cosmetic formulations as an emollient. Several varieties of sunflower oilseeds have been developed by standard genetic methods. The original oilseed was high in glyceryl linoleate. A premium high oleic strain was developed in the late twentieth century. Early in the 21st century, a mid oleic strain marketed as Nu-Sun was introduced as an improved frying oil that would have a low level of saturated fat, but would not require hydrogenation. These three major strains differ greatly in their levels of monounsaturated and polyunsaturated fats. There are also minor differences in their saturated fat content.
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