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Analysis of Phytosterols and Tocopherols, and Production of Structured Lipids from the Extracted Plant Oils  

조은진 (충남대학교 식품공학과)
이기택 (충남대학교 식품공학과)
Publication Information
Food Science and Preservation / v.10, no.3, 2003 , pp. 370-375 More about this Journal
Abstract
To obtain the oil sesame, walnut, whole wheat, and rice bran were extracted for 1, 3, or 6 hr by a shanking water bath(35$^{\circ}C$ and 100 rpm), and by soxhlet extractor(80$^{\circ}C$) for 1, 3 or 6 hr, respectively. The highest yield of extracted oil was obtained from the walnut(63.07% weight) and the whole wheat showed the lowest extraction yield of oil(1.13% weight). Major fatty acids from the extracted oils were linoleic, oleic, and palmitic acid. The maximum contents of total phytosterol in sesame, walnut, whole wheat, and rice bran were 0.44, 1.57, 2.25, and 2.03(% weight), respectively. Besides, total tocopherol contents in sesame, walnut, whole wheat, and rice bran were maxima 3.42, 0.16, 2.92, and 0.07(% weight), respectively. From the extracted oils, structured lipids(SL) were synthesized by the interesterification reaction with conjugated linoleic acid(CLA) in a shanking water bath at 55$^{\circ}C$. When the reactions(1:3 substrate molar ratio, extracted oil:CLA) were conducted for 24 hr, maxima 23.75 mol% of CLA incorporation was obtained from walnut oil and, in other cases, 16.28 - 19.15 mol% of CLA was found in the produced SL triacylglycerol molecules.
Keywords
sesame; walnut; whole wheat; rice bran; phytosterol; tocopherol; interesterification; structured lipids;
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Times Cited By KSCI : 1  (Citation Analysis)
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