VE is a recognized antioxidant, mainly α/γ-tocopherol and tocotrienol in RBO (Capellini et al., 2017). In this experiment, the total amount of vitamin E was expressed as the sum of α-tocopherol, α-tocotrienol, γ-tocopherol and γ-tocotrienol. As shown in Table 3, the vitamin E content in RBO ranged from 839.15 to 1004.42 mg/kg, which was similar to that of Zigoneanu, Williams, Xu & Sabliov (2008). A significantly (p< 0.05) higher concentration of total vitamin E was determined in the AEEO as against the SEO. The higher concentration of vitamin E in the AEEO could improve its oxidative stability. It also could be seen that the content of tocotrienol ranged from 547.02 to 643.67 mg/kg, accounting for about 60% of total vitamin E in RBO and the tocotrienol content in AEEO was significantly (p < 0.05) higher than that of SEO. Tocotrienols had more significant physiological functions than tocopherol in antioxidant activity, cholesterol and blood lipid reduction (Qureshi et al., 1991). Comparison of AEEO and SEO showed significant (p < 0.05) difference of α-tocopherol contents which were 315.87 mg/kg and 261.13 mg/kg. Karmowski, Hintze, Kschonsek, Killenberg & Böhm (2015) confirmed that the antioxidant capacity of α-tocopherol was slightly lower than that of α-tocotrienol. It can be seen that AEEO with higher natural antioxidant is an important nutritional and healthy oil, and its development and utilization prospects are very broad.