초록
영어
The aim of the present study was to investigate the differences between affordably priced vegetable oils (soybean, corn, rice bran, grape seed, and sunflower oils) and relatively expensive vegetable oils (sesame, perilla and flaxseed oils), based on their major (e.g., fatty acids) and minor components (e.g., phytosterols, sesamin, and -tocopherol) analyzed by gas chromatography-flame ionization detector. The relatively expensive edible oils exhibited lower levels of palmitic acid. Flaxseed and perilla oils exhibited linolenic acid content of more than 50 % and they contained significantly higher -sitosterol content than that in other oils. The relative ratio of campesterol/ -sitosterol could be helpful for differentiating them from other vegetable oils. Sesame oil only contained a unique compound called sesamin. The relatively expensive oils possessed higher -tocopherol content, compared with other vegetable oils including ricebran, grapeseed, and sunflower oils. Therefore fatty acid, phytosterol, sesamin, and -tocopherol analyses could be used as important indicators for discriminating the relatively expensive edible oils from the other oils.
목차
I. Introduction
II. Materials and methods
2.1 Materials
2.2 Fatty acid composition
2.3 Phytosterols, sesamin, and y-tocopherol
2.4 Statistical analysis
III. Results and discussion
3.1 Fatty acid compositions
3.2 Phytosterols
3.3 Sesamin and y-tocopherol
3.4 Correlations between fatty acids and phytosterols
IV. Conclusions
V. Acknowledgments
VI. References