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Synthesis and Characterization of Mono- and Diacylglycerol Enriched Functional Oil by Enzymatic Glycerolysis of Corn Oil  

Park, Rae-Kyun (Department of Food Science and Technology, Chungnam National University)
Lee, Ki-Teak (Department of Food Science and Technology, Chungnam National University)
Publication Information
Korean Journal of Food Science and Technology / v.36, no.2, 2004 , pp. 211-216 More about this Journal
Abstract
Mono-and diacylglycerol-enriched oil was produced from corn oil through enzymatic glycerolysis using 1,3-specific immobilized lipase in solvent-free system and stirred-tank batch reactor. HPLC analysis revealed enriched oil was respectively composed of: 45.05, 16.27, 23.05, and 14.98% triacylglycerol, 1,3-diacylglycerol, 1,2-diacylglycerol, and monoacylglycerol; 13.21, 0.15, 2.02, 34.36, 49.12, and 1.14 mol% palmitic, palmitoleic, stearic, oleic, linoleic, and linolenic acids; and 0.014, 0.029, 0.010 and 0.053% ${\alpha},\;{\gamma},\;{\delta}-$, and total tocopherols. Physiochemical and melting properties of enriched oil were evaluated. Oxidative stability study revealed enriched oil showed higher peroxide and p-anisidine values than corn oil. Rosemary extracts (100 to 300 ppm) reduce oxidation.
Keywords
diacylglycerol; monoacylglycerol; glycerolysis; lipase reaction; oxidative stability;
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