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A double-development procedure employing first a polar and then a nonpolar solvent system is described for the complete separation by thin-layer chromatography of the main lipid classes encountered in natural lipids. For better quantification, long plates (34 cm) are employed. Diglycerides were separated from cholesterol, 1,2- from 1,3-diglycerides, and monoglycerides from phospholipids.
Freeman et al. (1966) studied this question.