Summary The separation of methyl esters of octadecenoic acids by G.L.P.C. on a capillary column is shown for a sample of hydrogenated commercial vegetable oil. Comparisons are made with a regular packed column G.L.P.C., a capillary column G.L.P.C., and with infrared analysis. Good separation of methyl oleate and methyl elaidate was accomplished, using a capillary column. The amount of elaidate found by G.L.P.C. compared well with the trans ‐acid found by infrared analysis. In addition, a small amount of a component was detected that is possibly another isomer of methyl oleate.
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Kauffman et al. (1960) studied this question.
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