Comparison of vitamin E, phytosterols and fatty acid composition in commercially available grape seed oils in Korea.

摘要

Grape seed oil (GSO) is 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 content and composition of vitamin E, fatty acids and phytosterols in commercially available grape seed oils in Korea. Vitamin E was analysed by HPLC with fluorometric detection and the phytosterol and fatty acid composition was analysed by GC. GSO had a total vitamin E content in the range of 34.6-66.1 mg/100 g oil and high levels of tocotrienols. The GSO are mainly composed of linoleic acid ranging from 60 to 76%. GSO also contained 77.0-166.9 mg of phytosterols/100 g oil.