Author/Editor		Correa, Ricardo A; Ferraz, Vany; Medvedovici, Andrei; Sandra, Pat; Černe, Katarina; David, Frank
Title		Positional and configurational separation of fatty acid isomers by micro reversed-phase liquid chromatography with an Ag+ -containing mobile phase
Type		članek
Source		J Chromatogr
Vol. and No.		Letnik 848
Publication year		1999
Volume		str. 83-93
Language		eng
Abstract		Different positional and configurational fatty acids, derivatised into the phenacylesters, were analyzed by reversed-phase liquid chromatography (RPLC) on micropacked fused-silica columns with an Ag+-containing mobile phase. The žrcomplexation strength was evaluated by plotting the selectivity coefficients (alphaAg+) as a function of (Ag+). The equilibrium constants (K*) were determined by means of the hyperbolic dependence of the capacity factors on (Ag+). Different fat hydrolysates and margarines taken at different stages of palm oil hydrogenation were analyzed. Data obtained with micropacked RPLC and capillary GC for the determination of the cis/trans ratio of monoenoic acids are compared.
Descriptors		MARGARINE FATTY ACIDS HYDROGENATION SILVER CHROMATOGRAPHY, HIGH PRESSURE LIQUID HEXANES ISOMERISM