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Journal of Lipid Research, Vol 31, 2127-2130, Copyright © 1990 by Lipid Research, Inc.

ARTICLES

An improved method for the identification and quantitation of biological lipids by HPLC using laser light-scattering detection

BS Lutzke and JM Braughler
Upjohn Company, CNS Research and Development, Kalamazoo, MI 49001.

We have developed a simplified and improved high performance liquid chromatography (HPLC) method for the detection and quantitation of tissue lipid using a new laser light-scattering detector (Varex model ELSD II). This detector has a limit of sensitivity of 50 ng for neutral lipid and 200 ng for most phospholipids with excellent reproducibility. By coupling the ELSD II with a ternary gradient normal phase HPLC system, we were able to separate and quantify the major lipid constituents of extracted tissue. This system was used to profile and quantitate the major lipids from rat brain, liver, and heart with greater sensitivity than other available techniques, with the exception of high performance thin-layer chromatography (HPTLC). However, the convenience of HPLC allows for a significant improvement in analysis time with only a threefold reduction in sensitivity when compared to HPTLC.
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