Výsledky vyhledávání - "Sylvie Héron"

Methodology for dyes purification by preparative bidimensional offline reversed phase HPLC separation based on mobile phase pH change: case study of Justicia spicigera

Autor: Lucie, Arberet, Witold, Nowik, Anne, Michelin, Alain, Tchapla, Christine, Andraud, Sylvie, Héron

Publikováno v: Journal of separation science.

The extensive characterisation of the natural dyes involves the purification of their coloured compounds for their structural analysis and stability studies. Most natural compounds being ionisable, the optimisation of an easy and affordable preparati

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=pmid________::eb41f5dcad6ea3c8a312e9716afac7e4
https://pubmed.ncbi.nlm.nih.gov/36575590

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Rapid assessment of fatty acyls chains of phospholipids and plasmalogens by atmospheric pressure chemical ionization in positive mode and high-resolution mass spectrometry using in-source generated monoacylglycerol like fragments intensities

Autor: Sonia Abreu, Sylvie Héron, Audrey Solgadi, Bastien Prost, Jessica Dalloux-Chioccioli, Alice Kermarrec, Anne Meynier, Justine Bertrand-Michel, Alain Tchapla, Pierre Chaminade

Publikováno v: Journal of Chromatography A
Journal of Chromatography A, 2022, 1673, pp.463093. ⟨10.1016/j.chroma.2022.463093⟩

International audience; We recently published a new concept using monoacylglycerol-like fragments [MG+H-H2O]+ (ions B) pro-duced in-source by atmospheric pressure photoionization in positive mode and high-resolution massspectrometry for the determina

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::e5bd38ad72f91c8411719de0eddad96e
https://pubmed.ncbi.nlm.nih.gov/35569175

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Rapid assessment of triacylglycerol fatty acyls composition by LC-APPI+-HRMS using monoacylglycerol like fragments intensities

Autor: Florent Joffre, Audrey Solgadi, Pierre Chaminade, Sylvie Héron, Alain Tchapla, Sonia Abreu

Publikováno v: Analytica Chimica Acta. 1178:338809

We present a new analytical approach for the analysis of triacylglycerol fatty acyls distribution by normal phase liquid chromatography (NPLC) coupled with APPI+-HRMS. The NPLC method used allows the separation of more than 30 classes of lipids. The

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::45729b83392fae55d335578b07ef1c34
https://doi.org/10.1016/j.aca.2021.338809

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Optimization of ultra-high pressure liquid chromatography – tandem mass spectrometry determination in plasma and red blood cells of four sphingolipids and their evaluation as biomarker candidates of Gaucher’s disease

Autor: Christian Rose, Caroline Chipeaux, Nadia Belmatoug, Mélanie Franco, Caroline Le Van Kim, Nathalie Burguet, Thierry Billette de Villemeur, Sylvie Héron, Marine de Person, Fathi Moussa

Publikováno v: Journal of Chromatography A. 1525:116-125

While important advances have been recently achieved in the optimization of lipid classes' separation, information on the specific determination of medium polarity lipids such as sphingolipids (SLs) in highly complex matrices remains fragmentary. In

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::833bf0736caaf18c1238bcef057e2538
https://doi.org/10.1016/j.chroma.2017.10.038

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UHPLC-APCI-MS Profiling of Triacylglycerols in Vegetable Oils—Application to the Analysis of Four North African Sesame Seed Varieties

Autor: Fathi Moussa, Kaouther Ben Arfa, Marine de Person, Dorra Hmida, Sadok Boukhchina, Alain Tchapla, Sylvie Héron, Jean Bleton

Publikováno v: Food Analytical Methods. 10:2827-2838

Here, we describe an isocratic ultra-high performance liquid chromatography-atmospheric pressure chemical ionization mass spectrometry (UHPLC-APCI-MS) method for the characterization and the quantification of triacylglycerols (TAGs) in vegetable oils

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::cdbc8009b172b746582bf980cdc54212
https://doi.org/10.1007/s12161-017-0851-0

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Assessment of Two-Dimensional Separative Systems Using Nearest-Neighbor Distances Approach. Part 1: Orthogonality Aspects

Autor: Alain Tchapla, Mateusz Nowik, Sylvie Héron, Myriam Bonose, Witold Nowik

Publikováno v: Analytical Chemistry. 85:9449-9458

We propose here a new approach to the evaluation of two-dimensional and, more generally, multidimensional separations based on topological methods. We consider the apex plot as a graph, which could further be treated using a topological tool: the mea

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::47874852eb40ec400772675957b0e593
https://doi.org/10.1021/ac4012705

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Assessment of Two-Dimensional Separative Systems Using the Nearest Neighbor Distances Approach. Part 2: Separation Quality Aspects

Autor: Myriam Bonose, Mateusz Nowik, Witold Nowik, Alain Tchapla, Sylvie Héron

Publikováno v: Analytical Chemistry. 85:9459-9468

In this paper we propose a method for the evaluation of real separation quality in multidimensional separations based on the nearest neighbor distances (NND). This approach allows us to overcome the principal drawback of the orthogonality measurement

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::78d5c2dc91830cc5524a2067e9dfb517
https://doi.org/10.1021/ac4012717

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Fast non-aqueous reversed-phase liquid chromatography separation of triacylglycerol regioisomers with isocratic mobile phase. Application to different oils and fats

Autor: Arnaud W.G. Tamba Sompila, Dorra Hmida, Sylvie Héron, Alain Tchapla

Publikováno v: Journal of chromatography. B, Analytical technologies in the biomedical and life sciences.

The distribution of fatty acid species at the sn-1/3 position or the sn-2 position of triacylglycerols (TAGs) in natural fats and oils affects their physical and nutritional properties. In fats and oils, determining the presence of one or two regiois

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::7fd8e094f7c231307f2fcc492c1d2e53
https://pubmed.ncbi.nlm.nih.gov/28039812

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