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KMID : 0380619920240030240
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Korean Journal of Food Science and Technology
1992 Volume.24 No. 3 p.240 ~ p.246
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Optimization of Soybean Oil Fatty Acid Methyl Esters Preparation for Sucrose Polyesters Synthesis
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김석주/Kim, Suk ju
공운영/윤희남/정하열/윤성우/Kong, Un Young/Yoon, Hee Nam/Chung, Ha Yull/Yoon, Sung Woo
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Abstract
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Preparation of soybean oil fatty acid methyl esters (soybean oil FAME) through the transesterification of soybean oil with alkaline catalyst was optimized in terms of contents of residual free fatty acids (FFA) in soybean oil FAME and yield of soybean oil FAME due to the inhibitory effect of FFA on sucrose polyesters synthesis. Soybean oil FAME and residual FFA were analyzed quantitatively by simultaneous gas chromatography on a fused silica capillary column after converting the FFA in soybean oil FAME to tert.-butyldimethylsilyl (TBDMS) derivatives. Transesterification of soybean oil was successfully performed with alkaline catalyst (NaOH, 95%), which resulted in 99.1% yield of soybean oil FAME and less than 0.1% residual FFA contents under the conditions such as 30℃, 20 min. and 6:1 molar ratio of anhydrous methanol to soybean oil.
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