The aim of this work is to develop a separation method for characterization of unknown nonpolar lipids in vernix caseosa. Here we optimized adsorption chromatography coupled to mass spectrometry detection with exact mass measurement.
A long silica gel column (250 + 250 x 4.6 mm, particle size: 5 mu m) provided the best separation of nonpolar lipids present in vernix caseosa.