Abstract: In this study, oat oil was extracted into n-hexane and then refined. The contents of tocopherol and phospholipid in crude oat oil were determined. Meanwhile, the physicochemical properties and fatty acid composition of crude oat oil and refined oat oil were analyzed. The results showed that the contents of tocopherol and phospholipid in crude oat oil were 142.8 mg/kg and 14.159 mg/g, respectively. The refractive index n20, specific gravity, iodine value, saponification value, unsaponifiable component content of crude and refined oat oils were approximately 1.47, 0.92, 100 g I2/100 g, 190 mg KOH/g, and 1%, respectively. The quality of crude oat oil was remarkably improved by refining and all tested quality indices of refined oat oil could meet the requirements of edible vegetable oil. Moreover, refined oat oil revealed an increase in unsaturated fatty acid content of 1.96%. Therefore, oat oil can be seen as a functional vegetable oil rich in unsaturated fatty acids.

Key words: oat oil, physico-chemical properties, fatty acid composition, phospholipid