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A simple method was developed for the determination of monoglycerides (MG) and propylene glycol esters of fatty acid (PGE) in food additive preparations without derivatization, using a gas chromatograph equipped with a deactivated inlet tube, by splitless injection. A wide-bore capillary column of 0.53mm i. d. was used for separation, and a flame ionization detector was used for detection. GC/MS (CI) and GC/FTIR were used for identification. Tetrahydrofuran was used as the extracting solvent, and hexane, diethyl ether and ethyl acetate as eluents. Monocaprylin, monocaprin, monopalmitin, monostearin, monoolein and monolinolein were detected in commercial food additive preparations.

Determination of Monoglycerides and Propylene Glycol Esters of Fatty Acids in Food Additive Preparations by GC without Derivatization