High-Melting Point Sediment from Refined Coconut Oil Stored in a Tank for a Long Term
スポンサーリンク
概要
- 論文の詳細を見る
A small amount of sediment occurs in refined coconut oil stored in a large-scale tank for a long term. This sediment is different from that generally called Cocos Wax, is insoluble in various organic solvents, and has an m.p. of about 100°C. In this report, we have done a structural analysis of this sediment. The sediment was carried out by hydrolyzing with a KOH/ethyl alcohol solution including toluene. Samples were analyzed by elemental analysis, IR spectroscopy, EI-MS, CI-MS, field desorption mass spectrometry (FD-MS), and MALDI/TOF-MS. The hydrolyzates were a compound including an oxo group, and its relative molecular mass was 382 for the acid part and 412 for the unsaponified matter according to EI-MS (ionization energy was 70 eV and 15 eV) and CI-MS (reagent gases were i-butane, ammonia, and nitrogen monoxide). The relative molecular mass of the sediment was 1140 according to the mass spectrometry of FD, EI, and MALDI. It was elucidated based on the characteristic absorption analysis by IR and the fragmentation behavior of the EI-MS that the sediment was a wax ester, 3, 9-di-9-oxotetradocosanecarboxy-11-oxohexacosane, consisting of an acid part of 9-oxotetradocosanecarboxylic acid and an unsaponified matter of 3, 9-di-hydroxy-11-oxohexacosane.
- 日本油化学会の論文
著者
-
MOCHIDA Yoshiyuki
Department of Material and Life Chemistry, Kanagawa University
-
Mochida Yoshiyuki
Department Of Applied Chemistry Faculty Of Engineering Kanagawa University
-
Hasegawa Fukiko
Mass Spectrometry Facility, Faculty of Pharmaceutical Sciences, Tokyo University of Science
関連論文
- Determination of Total Hydroperoxides in Oxidized Vegetable Oils Based on Triphenylphosphine Oxidation Using Electron Ionization Mass Spectrometry
- Characterization of Oligomers by Liquid Ionization Mass Spectrometry. Photopolymerization Process of p-Phenylene Diacrylic Acid Diethyl Ester Crystal
- Effects of Amines on the Formation of Molecular Adduct Ions of Methyl Hydroperoxyoleates in Atmospheric Pressure Chemical Ionization Mass Spectrometry
- Effects of Additives to Methyl Hydroperoxyoleates on the Formation of Protonated Molecules and/or Molecular Adduct Ions in Liquid Ionization Mass Spectrometry
- Liquid Ionization Mass Spectrometry of Methyl Hydroperoxyoleates and Their Related Compounds
- Effect of Ammonia Addition to the Mobile Phase on Atmospheric Pressure Chemical Ionization Mass Spectrometry of Methyl Hydroperoxyoleates
- High-Melting Point Sediment from Refined Coconut Oil Stored in a Tank for a Long Term