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
E-mail:
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.
- Olsson NU, Salem N, J. Chromatogr. B, 692, 245 (1997)
- Munster C, Lu J, Schinzel S, Bechinger B, Salditt T, Eur. Biophys. J., 28, 683 (2000)
- Hong Y, Pak Y, Phytochemistry, 51, 861 (1999)
- Eckard PR, Taylor LT, Slack GC, J. Chromatogr. A, 826, 241 (1998)
- Grizard G, Sion B, Bauchart D, Boucher D, J. Chromatogr. B, 740, 101 (2000)
- Abidi SL, Mounts TL, J. Chromatogr. A, 773, 93 (1997)
- Miwa H, Yamamoto M, Futata T, Kan K, Asano T, J. Chromatogr. B, 677, 217 (1996)
- Christie WW, Lipid Analysis, 2nd ed., p. 107, Pergamom Press, New York (1992)
- Miguel ID, Roueche A, Betbeder D, J. Chromatogr. A, 840, 31 (1999)
- Bunger H, Pison U, J. Chromatogr. B, 672, 25 (1995)
- Abidi SL, Mounts TL, J. Chromatogr. B, 741, 213 (1996)
- Snyder LR, Kirkland JJ, Introduction to Modern Liquid Chromatography, 2nd ed., p. 34, Wiley, New York (1979)
- Row KH, Lee JW, Korean J. Chem. Eng., 14(5), 412 (1997)
- Row KH, Principles and Applications of Liquid Chromatography, p. 12, Inha Univ. (2000)