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http://dx.doi.org/10.3746/jkfn.2005.34.7.1052

Analysis and Enzymatic Production of Structured Lipids Containing DHA Using a Stirred-Batch Type Reactor  

Kim, Nam-Sook (Dept. of Food Science and Technology, Chungnam National University)
Lee, Ki-Teak (Dept. of Food Science and Technology, Chungnam National University)
Publication Information
Journal of the Korean Society of Food Science and Nutrition / v.34, no.7, 2005 , pp. 1052-1058 More about this Journal
Abstract
Structured lipid (SL) was synthesized by enzymatic interesterification with algae oil containing docosahexaenoic acid (DHA) and soybean oil in the stirred-batch type reactor. The reaction was performed for 15hr at $65^{\circ}C$ with 300 rpm catalyzed by sn-1,3 specific Lipozyme RM 1M lipase from Rhizomucor miehei ($11\%$ by weight of total substrates) in the absent organic solvent. SL contained $87.1\;area\%$ triacylglycerol (TAG), $12.1\;area\%$ diacylglycerol (DAG), $0.6\;area\%$ monoacylglycerol (MAG), and $0.2\;area\%$ free fatty acid (FFA). Major fatty acid profiles of SL were DHA $(15.7\;mol\%)$, linoleic $(31.1\;mol\%)$, palmitic $(20.2\;mol\%)$, oleic $(13.5\;mol\%)$ and eicosapentaenoic acid $(EPA,\;6.6 mol\%)$. SL contained the newly synthesized several peaks. Iodine and saponification of SL were 206.7 and 183.8. SL color showed darker and redder than soybean oil, and appeared the most yellowish color among SL, soybean, and algae oil.
Keywords
structured lipids; algae oil; docosahexaenoic acid; Rhizomucor miehei; interesterification;
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