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Journal of Lipid Research, Vol 24, 1398-1403, Copyright © 1983 by Lipid Research, Inc.

ARTICLES

A rapid, isocratic method for phospholipid separation by high- performance liquid chromatography

TL Kaduce, KC Norton and AA Spector

A rapid, isocratic method for separating the most prevalent phospholipids by high-performance liquid chromatography is described. Baseline resolution of phosphatidylinositol, phosphatidylserine, phosphatidylethanolamine, phosphatidylcholine, lysophosphatidylcholine, and sphingomyelin is achieved in less than 40 min on a silica column. Lipids are injected in 10 microliter of chloroform-diethyl ether 1:2 (v/v) and eluted with a solvent mixture of acetonitrile-methanol- sulfuric acid 100:3:0.05 (v/v/v) at a flow rate of 1 ml/min. Neutral lipids and cardiolipin elute with the solvent front. Chromatography of a radioactive cell lipid extract indicates a recovery of better than 97%. The procedure is sensitive enough to permit the analysis of the main phospholipids present in a monolayer culture containing about 100 micrograms of cell protein.
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