화학공학소재연구정보센터
Journal of Industrial and Engineering Chemistry, Vol.7, No.3, 178-182, May, 2001
High-Purity Separation of Phospholipids by Preparative High-Performance Liquid Chromatography
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Soybean lecithin (phospholipids), mainly phosphatidylethanolamine(PE), phosphatidylinositol(PI), and phosphatidylcholine(PC), is a commercial by-product of vegetable oil production. The purpose of this work was to investigate the effects of packing size in a chromatographic column, and to obtain the optimum mobile phase composition for preparative work. Normal-phase High-Performance Liquid Chromatography (HPLC) was applied. Hexane, methanol, and isopropanol(IPA) were used as the ternary mobile phases. With the commercially available Nova-Pak column (4 In packing size, 3.9 mm i.d., 15 cm length), the gradient condition of mobile phase composition was that hexane linearly decreased from 85 to 0 vol.% and IPA and methanol, linearly increased 10 to 30 and 5 to 70 vol.% in the following two steps during the total run time of 25 min at the mobile phase flow rate of 1.5 mL/min. For the three other preparative packing sizes experimented were 15, 5/20, and 25/40 μm, the optimum mobile phases were experimentally obtained. The resolutions between Pi and PI, PI and PC with 15 μm packings was better over the other two preparative packings. A slight change in mobile phase composition was observed to increase the resolution at the same mobile phase flow rate.
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