title: The occurrence of geometric polyprenol isomers in the rubber-producing plant, Eucommia ulmoides Oliver.
abstract: The chain length and geometric isomerism of polyprenols from Eucommia ulmoides Oliver were analyzed using supercritical fluid chromatography. After intensive effort to establish separation conditions for geometric isomers, a phenyl-bonded silica gel-packed column was found that cleanly separated poly-trans and -cis prenols. The presence of long-chain poly-trans prenols (>9 mers) was confirmed for the first time in plants. Trans isomers were found in the leaf, seed coat, and root, but not in the bark and seed. Poly-trans prenols in this plant may act as intermediates for trans-polyisoprene biosynthesis.
authors.affiliation: Department of Biotechnology, Graduate School of Engineering, Osaka University, Japan.
authors.forename: T
authors.initials: T
authors.lastname: Bamba
authors.forename: E
authors.initials: E
authors.lastname: Fukusaki
authors.forename: S
authors.initials: S
authors.lastname: Kajiyama
authors.forename: K
authors.initials: K
authors.lastname: Ute
authors.forename: T
authors.initials: T
authors.lastname: Kitayama
authors.forename: A
authors.initials: A
authors.lastname: Kobayashi
mesh_terms: D002851:Chromatography, High Pressure Liquid; D025924:Chromatography, Supercritical Fluid; D007536:Isomerism; D009682:Magnetic Resonance Spectroscopy; D018515:Plant Leaves / Q000737:chemistry; D018517:Plant Roots / Q000737:chemistry; D010944:Plants / Q000737:chemistry*; D012639:Seeds / Q000737:chemistry; D013729:Terpenes / Q000032:analysis* / Q000737:chemistry
chemical_list: D013729:Terpenes