1993•Journal of Japan Oil Chemists SocietyOpen access

Fractionation of α-and γ-Linolenic Acid-Enriched Triacylglycerols from Vegetable Oils by Column Chromatography on Silicic Acid

Kenji Hayashi

Abstract

α-and γ-Linolenic acid-enriched triacylglycerols (TG) were fractionated from vegetable oils by column chromatography on silicic acid. Fractionated TG from vegetable oil were differed according to the degree of unsaturation. Unsaturation indices of fractionated TG increased linearly with the order of elution. More unsaturated TG, contain considerable amounts of α-linolenic acid (22 % for soybean oil, 34 % for rapeseed oil and 80 % for linseed oil) and of γ-linolenic acid (27 % for evening primrose oil), were obtained from vegetable oil in satisfactory yields (11, 9, 33 and 11 %, respectively).

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Key concepts: Degree of unsaturation, Silicic acid, Fractionation, Linolenic acid, Rapeseed, Linseed oil, Chemistry, Chromatography