Structural characterization of triacylglycerol in several oils containing gamma-linolenic acid.
The differences are reported in the triacylglycerol (TG) structures of oils containing gamma-linolenic acid (GLA) from Oenothera biennis Linn seed oil (OBLO) from the wild plant, evening primrose seed oil (EPO) from a cultured plant, and bio-GLA oil (BIO) from a mold, the physiological functions of which were ascertained by animal testing. Reverse-phase high-performance liquid chromatographic separation detected 12 TG peaks each for OBLO and EPO, and 28 TG peaks for BIO. TG-containing GLA were composed of five molecular species each in OBLO and EPO, and ten molecular species in BIO. The totals of the molecular species containing GLA were 29.8% in OBLO, 23.8% in EPO, and 56.6% in BIO. In OBLO, the GLA level at the sn-2 position of the major TG species was higher than that in EPO. In BIO, the GLA level at the sn-2 position of the major TG species was lower than those in OBLO and EPO.
Shimizu
Satoru
S
The United Graduate School of Agriculture Sciences, Iwate University, Morioka, Iwate 020-8550, Japan.
Nakano
Masuo
M
D002849:Chromatography, Gas; D002851:Chromatography, High Pressure Liquid; D005227:Fatty Acids / Q000737:chemistry; D005228:Fatty Acids, Essential / Q000737:chemistry; D006868:Hydrolysis; D008041:Linoleic Acids; D008043:Linseed Oil / Q000737:chemistry; D031665:Oenothera biennis; D020799:Pancrelipase / Q000737:chemistry; D010938:Plant Oils / Q000737:chemistry*; D012639:Seeds / Q000737:chemistry; D014280:Triglycerides / Q000737:chemistry*; D017965:gamma-Linolenic Acid / Q000737:chemistry*
D005227:Fatty Acids; D005228:Fatty Acids, Essential; D008041:Linoleic Acids; D010938:Plant Oils; D014280:Triglycerides; C028498:evening primrose oil; D020799:Pancrelipase; D017965:gamma-Linolenic Acid; D008043:Linseed Oil