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13 C nuclear magnetic resonance spectroscopy of saturated, unsaturated, and oxygenated fatty acid methyl esters
Author(s) -
Tulloch A. P.,
Mazurek M.
Publication year - 1976
Publication title -
lipids
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.601
H-Index - 120
eISSN - 1558-9307
pISSN - 0024-4201
DOI - 10.1007/bf02532862
Subject(s) - chemistry , stearate , deuterium , spectral line , nuclear magnetic resonance spectroscopy , nmr spectra database , spectroscopy , methyl oleate , double bond , fatty acid , resonance (particle physics) , nuclear magnetic resonance , organic chemistry , catalysis , physics , particle physics , quantum mechanics , astronomy
Chemical shifts have been assigned to all the separate signals in the 13 C nuclear magnetic resonance spectra of methyl stearate, oleate, and petroselinate by means of the second and third atom isotope effects in spectra of specifically deuterated esters. Spectra of almost all the isomeric hydroxy, acetoxy, and oxo stearates were also measured. From the assignments, the effects of the introduction of a double bond or an oxo, hydroxy, or acetoxy group at different positions on the fatty acid chain on the 13 C nuclear magnetic resonance spectra were determined. All the isomeric oxo stearates and most of the hydroxy and acetoxy stearates can be distinguished and identified by their 13 C spectra.