Comparison of Vitamin E, Phytosterols and Fatty Acid Composition in Commercially Available Grape Seed Oils in Korea
2008
Wie, M.J. (Chungbuk National University, Cheongju, Republic of Korea) | Seong, J.H. (Chungbuk National University, Cheongju, Republic of Korea) | Jeon, K.W. (Chungbuk National University, Cheongju, Republic of Korea) | Jung, H.S. (Chungbuk National University, Cheongju, Republic of Korea) | Lee, J.S. (Chungbuk National University, Cheongju, Republic of Korea), E-mail: junsoo@chungbuk.ac.kr
Grape seeds have recently been utilized for the production of seed oil. Grape seed oils (GSOs) are generating increasing interest as a functional food product since it has been shown to contain high levels of vitamin E, unsaturated fatty acids, and phytosterols. The objective of this study was to determine the compositions of vitamin E, fatty acids, and phytosterols in commercially available grape seed oils in Korea. Vitamin E was analyzed by HPLC with fluorometric detector and phytosterol and fatty acid composition was analyzed by GC. GSOs contained total vitamin E in the range of 34.6 to 66.1 mg/100 g oil and high levels of tocotrienols. The GSOs are mainly composed of linoleic acid ranging from 60 to 76%. GSOs also contained 77.0~166.9 mg of phytosterols/100 g oil.
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