Abstract
The Triglyceride (TG) Committee of the Japan Oil Chemists' Society (JOCS) participated in a collaborative study by the International Union of Pure and Applied Chemistry (IUPAC) for TG analysis by gas-liquid chromatography (GLC) using six samples provided by IUPAC : lard, butter fat, soybean oil, hydrogenated soybean oil, groundnut oil, and anhydrated butter fat. This study, based on the total acyl carbon number, was conducted by fifteen organizations of nine countries. A summary of the results obtained will be reported in this journal at this issue. Our committee determined the major TG molecular species in the samples using field desorption mass spectrometry (FD-MS), high performance liquid chromatography (HPLC) and the GLC of the collaborative study. The major molecular species in TG of lard, groundnut oil, and soybean oil were found to be palmito-oleo-linolein, mono-oleo-di-linolein and/or mono-palmito-di-linolein and mono-oleo-di-linolein, respectively.GLC, FD-MS, and HPLC analyses were found to provide significant information by which the major molecular species of TG in naturally occuring fats and oils could be estimated.
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