Abstract
We describe a comprehensive approach to the separation, quantitation, and characterization of phospholipids and lysophospholipids present in complex biological samples. The central feature is a normal-phase HPLC separation of individual phospholipid and lysophospholipid classes. In this single chromatographic step, phospholipids and lysophospholipids are separated and recovered for quantitation by organic phosphate assay and characterization by acyl-group composition. Recovery of phospholipids and lysophospholipids from HPLC averages 80–90%. Isolated phospholipid and lysophospholipid fractions are available for separation of individual molecular species by second-dimension reverse-phase HPLC and characterization of individual molecular species by mass spectrometry.
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