Analysis of free fatty acids and fatty acid phenacyl esters in vegetable oils and margarine by capillary electrochromatography

Dermaux, Anna; Sandra, Patrick; Ferraz, Vany

doi:10.1002/(sici)1522-2683(19990101)20:1<74::aid-elps74>3.0.co;2-x

Cited by 45 publications

(8 citation statements)

References 9 publications

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“…Regarding to the elution order obtained, it was also consistent with other studies on FAMEs with RP‐packed columns . Consequently, these experiments confirm that the hydrophobic interaction governs the elution order, and that the presence of AgNPs leads to an improvement in the separation performance.…”

Section: Resultssupporting

confidence: 89%

Preparation and evaluation of lauryl methacrylate monoliths with embedded silver nanoparticles for capillary electrochromatography

Navarro-Pascual-Ahuir

Lerma‐García

Ramis‐Ramos

et al. 2013

Electrophoresis

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In this article, capillary columns constituted by lauryl methacrylate monoliths with embedded silver nanoparticles (AgNPs) were developed and tested. Two incorporation approaches of AgNPs in monoliths were explored. The AgNPs were either photogenerated in situ during polymerization of the monolith by UV irradiation, or incorporated to the polymerization mixture (ex situ). The influence of the AgNP concentration on the morphological and chromatographic properties of the polymer matrix was investigated, and both the in situ and ex situ approaches were comparatively discussed. The morphology of the monoliths was characterized by electron microscopic techniques, and their electrochromatographic performance was also evaluated with test mixtures of neutral compounds (sterols, fatty acid methyl esters, tocopherols, and polyaromatic hydrocarbons).

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Section: Resultssupporting

confidence: 89%

Preparation and evaluation of lauryl methacrylate monoliths with embedded silver nanoparticles for capillary electrochromatography

Navarro-Pascual-Ahuir

Lerma‐García

Ramis‐Ramos

et al. 2013

Electrophoresis

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“…Capillary electrochromatography (CEC) is a chromatographic technique which combines the advantages of liquid chromatography (LC) and capillary electrophor-esis (CE) to produce a highly versatile and efficient method for the potential separation of complex mixtures of compounds [ 1 ].…”

Section: Introductionmentioning

confidence: 99%

The analysis of pharmaceutical bases on a silica stationary phase by capillary electrochromatography using aqueous mobile phases

et al. 2000

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The capillary electrochromatographic (CEC) separation of a range of pharmaceutical bases was investigated on a commercially available silica stationary phase using aqueous mobile phases. The effects of mobile phase composition, buffer pH, applied voltage, and buffer anion on the retention behaviour of these bases were studied. Promising chromatography was obtained at pH 7.8 but was later found to be irreproducible. However, successful and reproducible chromatography of the bases was achieved at pH 2.3. We have previously demonstrated that the addition of mobile phase additives such as TEA-phosphate at low pH values has resulted in excellent CEC analysis of bases on reversed-phase packing materials. The same approach was applied to the analysis of bases on the silica phase in order to improve peak shape. Excellent chromatography was obtained for the analysis of strong pharmaceutical bases such as benzylamine, nortriptyline and diphenhydramine. The experimental investigations have shown that the CEC separation of a range of pharmaceutical bases can routinely be achieved with excellent peak shapes and peak efficiencies as high as 320,000 plates m 1.

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“…FFAs, due to their charge, produce the best efficiencies. Another application of the method was found in the analysis of margarine, during which the researchers were able to separate the FAPE C18:1 isomers (geometric and positional) as well as the saturated C18 from the unsaturated species .…”

Section: Free Fatty Acidsmentioning

confidence: 99%

A digest of capillary electrophoretic methods applied to lipid analyzes

Poinsot

Meang

et al. 2018

Electrophoresis

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Lipids are naturally occurring organic compounds that can be classified into a number of types based on their solubility in nonpolar organic solvents, and are generally insoluble in water. The great structural variety of these various types of lipids has led them to be components of many different biological substances such as oils, waxes, cellular membranes, tissues and biological fluids. The use of capillary electrophoresis (CE) for the study of lipids during the past 30 years has been relatively rare when compared to its use for other classes of biomolecules, primarily due to their insolubility in water. However, a number of interesting studies have been conducted, and as part of this review, we will present the different approaches that were used, which mainly consist of micellar kinetic chromatography and non-aqueous CE. The main advantages of the use of these techniques compared to GC is the very simple sample preparation that is required and, compared to LC, the very robust and quick separations that can be obtained. In this review, we present the various methods that have been reported in the literature that have been used for the study of fatty acids, phospholipids, glycerides, eicosanoids and sterols, with the inclusion of various tables presenting descriptions of the CE methods used as well as the methods of detection, including UV absorbance, fluorescence, mass spectrometry, and conductivity. This review aims to demonstrate that CE can be easily used for the analysis of lipids.

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Analysis of free fatty acids and fatty acid phenacyl esters in vegetable oils and margarine by capillary electrochromatography

Cited by 45 publications

References 9 publications

Preparation and evaluation of lauryl methacrylate monoliths with embedded silver nanoparticles for capillary electrochromatography

Preparation and evaluation of lauryl methacrylate monoliths with embedded silver nanoparticles for capillary electrochromatography

The analysis of pharmaceutical bases on a silica stationary phase by capillary electrochromatography using aqueous mobile phases

A digest of capillary electrophoretic methods applied to lipid analyzes

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