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Rapid analysis of jojoba wax fatty acids and alcohols after derivatization using Grignard reagents
Author(s) -
Pina M.,
Pioch D.,
Graille J.
Publication year - 1987
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/bf02534006
Subject(s) - derivatization , wax , reagent , chemistry , organic chemistry , magnesium bromide , chromatography , grignard reagent , gas chromatography , magnesium , high performance liquid chromatography
Abstract This method, based on the action of Grignard reagents, is an original approach to wax derivatization and differs from the methods previously described, which were essentially based on wax alcoholysis. Grignard reagents, especially magnesium ethyl bromide, react on ester functions to turn the wax constituents into primary and tertiary alcohols, the latter being the fatty acid derivatives. The mixture of these alcohols is analyzed by a single gas chromatographic injection. The overall time, about 1.5 hr, makes this method suitable for routine analysis. It could be also considered for analyzing low carbon condensation organic acid esters.