Premium
Gas‐Liquid partition chromatography and ultraviolet absorption of oils before and after hydrogenation
Author(s) -
Kauffman F. L.,
Weiss T. J.,
Lee G. D.,
Rockwood B. N.
Publication year - 1961
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/bf02631908
Subject(s) - ultraviolet , chemistry , linoleic acid , absorption (acoustics) , chromatography , gas chromatography , organic chemistry , fatty acid , materials science , optoelectronics , composite material
Summary Analyses of various natural fats and oils have been compared by G.L.P.C. and ultraviolet spectrophotometry. Good agreement was found for linoleic acid in unhydrogenated samples. The ultraviolet method gave lower results for linolenic acid. For hydrogenated oils the ultraviolet method gave lower results for both linoleic and linolenic acids in most instances where an appreciable amount of these components was present. It is known that the ultraviolet method measures only the naturally occurring isomers of the unsaturated fatty acids while the G.L.P.C. analysis includes all the isomers. This would account for the difference in responce between unhydrogenated and hydrogenated oils by the two methods of analysis.