| The fatty acid composition and nutrient composition of winter jujube kernel oil were analyzed, and the antioxidant ability of polar and non-polar components were determined. The results showed that the winter jujube kernel oil included eleven kinds of fatty acids, and the content of unsaturated fatty acids was 74.79%. The contents of oleic acid and linoleic acid were balanced, reaching 39.34% and 3374% respectively. The winter jujube kernel oil included fourteen kinds of unsaponifiable compounds, of which γ-sitosterol, not common in common vegetable oil, accounted for 53.11% of the total unsaponifiable compounds. Three kinds of tocopherols and two kinds of tocotrienols were detected in winter jujube kernel oil, of which γ-tocopherol content (106.34 mg/kg) was the highest, followed by α-tocopherol (31.48 mg/kg). The antioxidant capacity of non-polar components in winter jujube kernel oil was higher than that of polar components, and its scavenging abilities on DPPH and ABTS free radicals were 114.95 mgTE/kg and 207.8 mgTE/kg, respectively. |
