Separation of cis and trans unsaturated fatty acid methyl esters by silver ion high-performance liquid chromatography

1994 ◽  
Vol 659 (1) ◽  
pp. 95-99 ◽  
Author(s):  
Richard O. Adlof
Keyword(s):  
High Performance Liquid Chromatography ◽  
Liquid Chromatography ◽  
Fatty Acid ◽  
Unsaturated Fatty Acid ◽  
High Performance ◽  
Fatty Acid Methyl Esters ◽  
Methyl Esters ◽  
Silver Ion ◽  
Acid Methyl ◽  
Cis And Trans

Improved separation of conjugated fatty acid methyl esters by silver ion-high-performance liquid chromatography

Lipids ◽  
1999 ◽  
Vol 34 (4) ◽  
pp. 407-413 ◽  
Author(s):  
Najibullah Sehat ◽  
Rainer Rickert ◽  
Magdi M. Mossoba ◽  
John K. G. Kramer ◽  
Martin P. Yurawecz ◽  
...  
Keyword(s):  
High Performance Liquid Chromatography ◽  
Liquid Chromatography ◽  
Fatty Acid ◽  
High Performance ◽  
Fatty Acid Methyl Esters ◽  
Methyl Esters ◽  
Silver Ion ◽  
Conjugated Fatty Acid ◽  
Acid Methyl

Analysis and Quantitation of Fatty Acid Methyl Esters in Biodiesel by High-Performance Liquid Chromatography

2018 ◽  
Vol 32 (11) ◽  
pp. 11547-11554 ◽  
Author(s):  
Cristiane Gimenes de Souza ◽  
Mayara Torres de Araújo ◽  
Rafael Cavalcante dos Santos ◽  
Débora França de Andrade ◽  
Bárbara Vasconcello da Silva ◽  
...  
Keyword(s):  
High Performance Liquid Chromatography ◽  
Liquid Chromatography ◽  
Fatty Acid ◽  
High Performance ◽  
Fatty Acid Methyl Esters ◽  
Methyl Esters ◽  
Acid Methyl

scholarly journals Fast Cleanup Method for the Analysis of Sudan IIV and Para Red in Various Foods and Paprika Color (Oleoresin) by High-Performance Liquid Chromatography/Diode Array Detection: Focus on Removal of Fat and Oil as Fatty Acid Methyl Esters Prepared by Transesterification of Acylglycerols

2007 ◽  
Vol 90 (2) ◽  
pp. 437-445 ◽  
Author(s):  
Yoko Uematsu ◽  
Mami Ogimoto ◽  
Junichirou Kabashima ◽  
Kumi Suzuki ◽  
Kouichi Ito
Keyword(s):  
High Performance Liquid Chromatography ◽  
Liquid Chromatography ◽  
Fatty Acid ◽  
High Performance ◽  
Fatty Acid Methyl Esters ◽  
Methyl Esters ◽  
Diode Array ◽  
Sudan Dyes ◽  
Acid Methyl ◽  
Removal Of Fat

Abstract A fast and effective cleanup method was developed for the analysis of Sudan I, II, III, IV, and Para Red (Sudan dyes) in various foods and paprika color (oleoresin) by high-performance liquid chromatography (LC) with a diode array detector (DAD). Removal of fat or oil in fatty sample was a critical point for reducing the volume of the final sample solution in order to obtain a sufficient level of the analytes. Separation of fat or oil from the dyes with a silica gel solid-phase extraction (SPE) column seemed unfeasible, because elution profiles of oil, fat, and the dyes were similar. Finally, fat and oil were separated from the dyes by elution from the SPE column with n-hexane, not as intact compounds but as fatty acid methyl esters prepared by direct transesterification of acylglycerols in fat and oil, leaving the dyes on the column. The dyes were eluted with n-hexanediethyl ether (9 + 1). Gradient elution with water and tetrahydrofuran was used for separation on a C18 column by LC. Measurement of spectral of μ0.5 g/g of Sudan dyes in foods and 1 μg/g in paprika color (oleoresin) with the DAD was achieved.

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