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Separation and identification of ximenynic acid isomers in the seed oil of Santalum spicatum R.Br. as their 4,4‐dimethyloxazoline derivatives
Author(s) -
Liu Yandi D.,
Longmore Robert B.,
Fox John E. D.
Publication year - 1996
Publication title -
journal of the american oil chemists' society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.512
H-Index - 117
eISSN - 1558-9331
pISSN - 0003-021X
DOI - 10.1007/bf02517979
Subject(s) - chemistry , mass spectrometry , fatty acid , gas chromatography , cis–trans isomerism , gas chromatography–mass spectrometry , carbon chain , organic chemistry , chromatography
The seed oil of Santalum spicatum contains a significant amount of ximenynic acid, trans ‐11‐octadecen‐9‐ynoic acid, a long‐chain acetylenic fatty acid, as a major component (34%). The identity of trans ‐ximenynic acid was confirmed after isolation by ultraviolet, infrared, and nuclear magnetic resonance (NMR) ( 1 H‐ and 13 C‐) spectroscopy and by gas chromatography/mass spectrometry (GC/MS). The cis isomer of ximenynic acid was also found (<1%) in some samples. The cis and trans isomers were characterized by GC/MS comparison of their methyl esters and 4,4‐dimethyloxazoline derivatives.