1
|
Morvan A, Garnier C, Furman C, Speybrouck D, Boulanger E, Ghinet A, Lipka E. Separation of planar chiral ferrocenes by capillary electrokinetic chromatography and liquid chromatography. J Chromatogr A 2022; 1677:463306. [DOI: 10.1016/j.chroma.2022.463306] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2022] [Revised: 07/01/2022] [Accepted: 07/02/2022] [Indexed: 11/28/2022]
|
2
|
Derazshamshir A, Göktürk I, Yılmaz F, Denizli A. S-citalopram imprinted monolithic columns for capillary electrochromatography enantioseparations. Electrophoresis 2021; 42:2672-2682. [PMID: 34406668 DOI: 10.1002/elps.202100222] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2021] [Revised: 08/01/2021] [Accepted: 08/16/2021] [Indexed: 11/08/2022]
Abstract
In this study, the molecular imprinting method was used to separate enantiomeric forms of chiral antidepressant drug, R,S-citalopram (R,S-CIT) in aqueous solution by CEC system combining the advantages of capillary electrophoresis (CE) and high-performance liquid chromatography (HPLC). For that, an amino acid-based molecularly imprinted monolithic capillary column was designed and used as a stationary phase for selective separation of S-citalopram (S-CIT) for the first time. S-CIT was selectively separated from the aqueous solution containing the other enantiomeric form of R-CIT, which is the same in size and shape as the template molecule. Morphology of the molecularly imprinted (MIP S-CIT) and non-imprinted (NIP S-CIT) monolithic capillary columns was observed by scanning electron microscopy. Imprinting efficiency of MIP S-CIT monolithic capillary column used for selective S-CIT separation was verified by comparing with NIP S-CIT and calculated imprinting factor (I.F:1.81) proved the high selectivity of the MIP S-CIT for S-CIT. Cavities formed for S-CIT form enabled selective (α = 2.08) separation of the target molecule from the other enantiomeric R-CIT form. Separation was achieved in a short period of 10 min, with the electrophoretic mobility of 7.68 × 10-6 m2 /Vs for R,S-CIT at pH 7.0 10 mM PB and 50% ACN ratio. The performance of both MIP S-CIT and NIP S-CIT columns was estimated by repeating the R,S-CIT separations with intra-batch and inter-batch studies for reproducibility of retention times of R,S-CITs. Estimated RSD values that are lower than 2% suggest that the monolithic columns separate R,S-CIT enantiomers without losing separation efficiency.
Collapse
Affiliation(s)
| | - Ilgım Göktürk
- Department of Chemistry, Hacettepe University, Ankara, Turkey
| | - Fatma Yılmaz
- Chemistry Technology Division, Bolu Abant Izzet Baysal University, Bolu, Turkey
| | - Adil Denizli
- Department of Chemistry, Hacettepe University, Ankara, Turkey
| |
Collapse
|
3
|
La Z, Danel C, Grolaux G, Charton J, Furman C, Lipka E. Electrophoretic separation of multiple chiral center analyte with a three cyclodextrins mixture. Electrophoresis 2021; 42:1810-1817. [PMID: 33644914 DOI: 10.1002/elps.202000342] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2020] [Revised: 02/17/2021] [Accepted: 02/22/2021] [Indexed: 11/09/2022]
Abstract
A capillary electrokinetic chromatography method (CEKC) was developed for complete stereoisomeric separation of a neutral, hydrophobic, multiple chiral center dihydropyridone analogue, a drug candidate proposed in type 2 diabetes treatment. A background electrolyte comprising three cyclodextrins was found to successfully separate the eight isomers. First an anionic cyclodextrin, the SBE-β-CD, was selected to allow the chiral separation of our neutral compound and partial resolutions of the eight isomers were obtained. Then, the effects of different parameters such as the nature and concentration of the other cyclodextrins added and pH of the buffer were examined. Finally, a triple CD-system consisted of 15 mM SBE-β-CD plus 15 mM γ-CD and 40 mM HP-γ-CD in a 50 mM borate background electrolyte at pH 10, was found to successfully separate the eight isomers. Last, the selectivity and limits of detection and quantification were evaluated for this optimized method.
Collapse
Affiliation(s)
- Zuo La
- Univ. Lille, Inserm, Institut Pasteur de Lille, U1167 - Risk factors and molecular determinants of aging-related diseases, Lille, F-59000, France
| | - Cécile Danel
- Univ. Lille, CHU Lille, ULR-7365 - GRITA - Groupe de Recherche sur les formes Injectables et Technologies Associées, Lille, F-59000, France
| | - Gaëlle Grolaux
- Univ. Lille, Inserm, Institut Pasteur de Lille, U1167 - Risk factors and molecular determinants of aging-related diseases, Lille, F-59000, France
| | - Julie Charton
- Univ. Lille, Inserm, Institut Pasteur de Lille, U1177 - Drugs and Molecules for living Systems, Lille, F-59000, France
| | - Christophe Furman
- Univ. Lille, Inserm, Institut Pasteur de Lille, U1167 - Risk factors and molecular determinants of aging-related diseases, Lille, F-59000, France
| | - Emmanuelle Lipka
- Univ. Lille, Inserm, Institut Pasteur de Lille, U1167 - Risk factors and molecular determinants of aging-related diseases, Lille, F-59000, France
| |
Collapse
|
4
|
de Koster N, Clark CP, Kohler I. Past, present, and future developments in enantioselective analysis using capillary electromigration techniques. Electrophoresis 2021; 42:38-57. [PMID: 32914880 PMCID: PMC7821218 DOI: 10.1002/elps.202000151] [Citation(s) in RCA: 28] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2020] [Revised: 08/22/2020] [Accepted: 09/08/2020] [Indexed: 12/16/2022]
Abstract
Enantioseparation of chiral products has become increasingly important in a large diversity of academic and industrial applications. The separation of chiral compounds is inherently challenging and thus requires a suitable analytical technique that can achieve high resolution and sensitivity. In this context, CE has shown remarkable results so far. Chiral CE offers an orthogonal enantioselectivity and is typically considered less costly than chromatographic techniques, since only minute amounts of chiral selectors are needed. Several CE approaches have been developed for chiral analysis, including chiral EKC and chiral CEC. Enantioseparations by EKC benefit from the wide variety of possible pseudostationary phases that can be employed. Chiral CEC, on the other hand, combines chromatographic separation principles with the bulk fluid movement of CE, benefitting from reduced band broadening as compared to pressure-driven systems. Although UV detection is conventionally used for these approaches, MS can also be considered. CE-MS represents a promising alternative due to the increased sensitivity and selectivity, enabling the chiral analysis of complex samples. The potential contamination of the MS ion source in EKC-MS can be overcome using partial-filling and counter-migration techniques. However, chiral analysis using monolithic and open-tubular CEC-MS awaits additional method validation and a dedicated commercial interface. Further efforts in chiral CE are expected toward the improvement of existing techniques, the development of novel pseudostationary phases, and establishing the use of chiral ionic liquids, molecular imprinted polymers, and metal-organic frameworks. These developments will certainly foster the adoption of CE(-MS) as a well-established technique in routine chiral analysis.
Collapse
Affiliation(s)
- Nicky de Koster
- Leiden Academic Centre for Drug Research, Division of Systems Biomedicine and PharmacologyLeiden UniversityLeidenThe Netherlands
| | - Charles P. Clark
- Leiden Academic Centre for Drug Research, Division of Systems Biomedicine and PharmacologyLeiden UniversityLeidenThe Netherlands
| | - Isabelle Kohler
- Division of BioAnalytical Chemistry, Department of Chemistry and Pharmaceutical Sciences, Amsterdam Institute for Molecular and Life SciencesVrije Universiteit AmsterdamAmsterdamThe Netherlands
| |
Collapse
|
5
|
Zeid AM, Nasr JJM, Belal F, Walash M, Kaji N, Baba Y. Microfluidic fast chiral separation of baclofen and phenylalanine enantiomers based on cyclodextrin-electrokinetic chromatography. Microchem J 2021. [DOI: 10.1016/j.microc.2020.105770] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
|
6
|
Speybrouck D, Howsam M, Lipka E. Recent developments in preparative-scale supercritical fluid- and liquid chromatography for chiral separations. Trends Analyt Chem 2020. [DOI: 10.1016/j.trac.2020.116090] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
|
7
|
Single isomer cyclodextrins as chiral selectors in capillary electrophoresis. J Chromatogr A 2020; 1627:461375. [PMID: 32823120 DOI: 10.1016/j.chroma.2020.461375] [Citation(s) in RCA: 43] [Impact Index Per Article: 10.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2020] [Revised: 06/24/2020] [Accepted: 06/28/2020] [Indexed: 12/23/2022]
Abstract
Since decades, cyclodextrins are one of the most powerful selectors in chiral capillary electrophoresis for the enantioseparation of diverse organic compounds. This review concerns papers published over the last decade (from 2009 until nowadays), dealing with the capillary electrophoretic application of single isomer cyclodextrin derivatives in chiral separations. Following a brief overview of their synthetic approaches, the inventory of the neutral, negatively and positively charged (including both permanently ionic and pH-tunable ionizable substituents) and zwitterionic CD derivatives is presented, with insights to underlying structural aspects by NMR spectroscopy and molecular modeling. CE represents an ideal tool to study the weak, non-covalent supramolecular interactions. The published methods are reviewed in the light of enantioselectivity, enantiomer migration order and the fine-tuning of enantiodiscrimination by the substitution pattern of the single entity selector molecules, which is hardly possible for their randomly substituted counterparts. All the reviewed publications herein support that cyclodextrin-based chiral capillary electrophoresis seems to remain a popular choice in pharmaceutical and biomedical analysis.
Collapse
|
8
|
Moldovan RC, Bodoki E, Servais AC, Crommen J, Oprean R, Fillet M. Selectivity evaluation of phenyl based stationary phases for the analysis of amino acid diastereomers by liquid chromatography coupled with mass spectrometry. J Chromatogr A 2019; 1590:80-87. [DOI: 10.1016/j.chroma.2018.12.068] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2018] [Revised: 12/26/2018] [Accepted: 12/31/2018] [Indexed: 11/30/2022]
|
9
|
Greño M, Salgado A, Castro‐Puyana M, Marina ML. Nuclear magnetic resonance to study the interactions acting in the enantiomeric separation of homocysteine by capillary electrophoresis with a dual system of γ‐cyclodextrin and the chiral ionic liquid EtCholNTf2. Electrophoresis 2019; 40:1913-1920. [DOI: 10.1002/elps.201800483] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2018] [Revised: 03/15/2019] [Accepted: 03/18/2019] [Indexed: 12/22/2022]
Affiliation(s)
- Maider Greño
- Departamento de Química AnalíticaQuímica Física e Ingeniería Química. Facultad de CienciasUniversidad de Alcalá. Ctra. Alcalá de Henares Madrid Spain
| | - Antonio Salgado
- Centro de Espectroscopía de Resonancia Magnética Nuclear (CERMN)Centro de Apoyo a la Investigación en QuímicaUniversidad de Alcalá Ctra. Madrid Spain
| | - María Castro‐Puyana
- Departamento de Química AnalíticaQuímica Física e Ingeniería Química. Facultad de CienciasUniversidad de Alcalá. Ctra. Alcalá de Henares Madrid Spain
- Instituto de Investigación Química Andrés M. del Río. Universidad de Alcalá. Ctra. Madrid‐Barcelona Alcalá de Henares Madrid Spain
| | - María Luisa Marina
- Departamento de Química AnalíticaQuímica Física e Ingeniería Química. Facultad de CienciasUniversidad de Alcalá. Ctra. Alcalá de Henares Madrid Spain
- Instituto de Investigación Química Andrés M. del Río. Universidad de Alcalá. Ctra. Madrid‐Barcelona Alcalá de Henares Madrid Spain
| |
Collapse
|
10
|
Chiral capillary electrophoresis with UV-excited fluorescence detection for the enantioselective analysis of 9-fluorenylmethoxycarbonyl-derivatized amino acids. Anal Bioanal Chem 2018; 410:4979-4990. [PMID: 29808298 PMCID: PMC6061710 DOI: 10.1007/s00216-018-1148-x] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2018] [Revised: 05/14/2018] [Accepted: 05/16/2018] [Indexed: 10/29/2022]
Abstract
The potential of capillary electrophoresis (CE) with ultraviolet (UV)-excited fluorescence detection for sensitive chiral analysis of amino acids (AAs) was investigated. DL-AAs were derivatized with 9-fluorenylmethoxycarbonyl chloride (FMOC)-Cl to allow their fluorescence detection and enhance enantioseparation. Fluorescence detection was achieved employing optical fibers, leading UV excitation light (< 300 nm) from a Xe-Hg lamp to the capillary window, and fluorescence emission to a spectrograph equipped with a charge-coupled device (CCD). Signal averaging over time and emission wavelength intervals was carried out to improve the signal-to-noise ratio of the FMOC-AAs. A background electrolyte (BGE) of 40 mM sodium tetraborate (pH 9.5), containing 15% isopropanol (v/v), 30 mM sodium dodecyl sulfate (SDS), and 30 mM β-cyclodextrin (β-CD), was found optimal for AA chemo- and enantioseparation. Enantioresolutions of 1.0 or higher were achieved for 16 proteinogenic DL-AAs. Limits of detection (LODs) were in the 10-100-nM range (injected concentration) for the D-AA enantiomers, except for FMOC-D-tryptophan (536 nM) which showed intramolecular fluorescence quenching. Linearity (R2 > 0.997) and repeatability for peak height (relative standard deviations (RSDs) < 7.0%; n = 5) and electrophoretic mobility (RSDs < 0.6%; n = 5) of individual AA enantiomers were established for chiral analysis of DL-AA mixtures. The applicability of the method was investigated by the analysis of cerebrospinal fluid (CSF). Next to L-AAs, endogenous levels of D-glutamine and D-aspartic acid could be measured in CSF revealing enantiomeric ratios of 0.35 and 19.6%, respectively. This indicates the method's potential for the analysis of low concentrations of D-AAs in presence of abundant L-AAs.
Collapse
|
11
|
Miao Y, Liu Q, Wang W, Liu L, Wang L. Enantioseparation of amino acids by micellar capillary electrophoresis using binary chiral selectors and determination of D-glutamic acid and D-aspartic acid in rice wine. J LIQ CHROMATOGR R T 2017. [DOI: 10.1080/10826076.2017.1364263] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Affiliation(s)
- Yanni Miao
- School of Food Science and Biotechnology, Zhejiang Gongshang University, Hangzhou, China
| | - Qi Liu
- School of Food Science and Biotechnology, Zhejiang Gongshang University, Hangzhou, China
| | - Wei Wang
- School of Food Science and Biotechnology, Zhejiang Gongshang University, Hangzhou, China
| | - Li Liu
- School of Food Science and Biotechnology, Zhejiang Gongshang University, Hangzhou, China
| | - Li Wang
- School of Food Science and Biotechnology, Zhejiang Gongshang University, Hangzhou, China
| |
Collapse
|
12
|
Delplanques T, Boulahjar R, Charton J, Houze C, Howsam M, Servais AC, Fillet M, Lipka E. Single and dual cyclodextrins systems for the enantiomeric and diastereoisomeric separations of structurally related dihydropyridone analogues. Electrophoresis 2017; 38:1922-1931. [DOI: 10.1002/elps.201600536] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2016] [Revised: 04/05/2017] [Accepted: 04/13/2017] [Indexed: 12/19/2022]
Affiliation(s)
- Thibaut Delplanques
- Inserm, U995 - LIRIC - Laboratoire de Chimie Analytique, Faculté de Pharmacie de Lille; Université de Lille; Lille France
| | - Rajaa Boulahjar
- Inserm, Institut Pasteur de Lille, U1177 - Drugs and Molecules for living Systems; Université de Lille; Lille France
| | - Julie Charton
- Inserm, Institut Pasteur de Lille, U1177 - Drugs and Molecules for living Systems; Université de Lille; Lille France
| | - Corentin Houze
- Inserm, U995 - LIRIC - Laboratoire de Chimie Analytique, Faculté de Pharmacie de Lille; Université de Lille; Lille France
| | - Michael Howsam
- Inserm, U995 - LIRIC - Faculté de Médecine de Lille; Université de Lille; Lille France
| | - Anne-Catherine Servais
- Laboratory for the Analysis of Medicines, Center for Interdisciplinary Research on Medicines (CIRM); University of Liège; Liege Belgium
| | - Marianne Fillet
- Laboratory for the Analysis of Medicines, Center for Interdisciplinary Research on Medicines (CIRM); University of Liège; Liege Belgium
| | - Emmanuelle Lipka
- Inserm, U995 - LIRIC - Laboratoire de Chimie Analytique, Faculté de Pharmacie de Lille; Université de Lille; Lille France
| |
Collapse
|
13
|
Furmaniak P, Kubalczyk P, Stachniuk J, Głowacki R. Novel MEKC method for determination of sodium 2-mercaptoethanesulfonate in human plasma with in-capillary derivatization and UV detection. J Chromatogr B Analyt Technol Biomed Life Sci 2016; 1027:88-95. [DOI: 10.1016/j.jchromb.2016.05.032] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2016] [Revised: 05/16/2016] [Accepted: 05/20/2016] [Indexed: 12/13/2022]
|
14
|
Indirect Enantioseparation of Amino Acids by CE Using Automated In-Capillary Derivatization with ortho-Phthalaldehyde and N-Acetyl-l-Cysteine. Chromatographia 2016. [DOI: 10.1007/s10337-016-3122-0] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
|
15
|
Abstract
Capillary electrophoresis is a well-established separation technique in analytical research laboratories worldwide. Its interesting advantages make CE an efficient and potent alternative to other chromatographic techniques. However, it is also recognized that its main drawback is the relatively poor sensitivity when using optical detection. One way to overcome this limitation is to perform a derivatization reaction which is intended to provide the analyte more suitable analytical characteristics enabling a high sensitive detection. Based on the analytical step where the CE derivatization takes place, it can be classified as precapillary (before separation), in-capillary (during separation), or postcapillary (after separation). This chapter describes the application of four different derivatization protocols (in-capillary and precapillary modes) to carry out the achiral and chiral analysis of different compounds in food and biological samples with three different detection modes (UV, LIF, and MS).
Collapse
Affiliation(s)
- M Luisa Marina
- Department of Analytical Chemistry, Physical Chemistry and Chemical Engineering, Faculty of Biology, Environmental Sciences and Chemistry, University of Alcalá, Ctra. Madrid-Barcelona Km. 33.600, Alcalá de Henares, Madrid, 28871, Spain
| | - María Castro-Puyana
- Department of Analytical Chemistry, Physical Chemistry and Chemical Engineering, Faculty of Biology, Environmental Sciences and Chemistry, University of Alcalá, Ctra. Madrid-Barcelona Km. 33.600, Alcalá de Henares, Madrid, 28871, Spain.
| |
Collapse
|
16
|
Derivatisation for separation and detection in capillary electrophoresis (2012-2015). Electrophoresis 2015; 37:45-55. [DOI: 10.1002/elps.201500290] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2015] [Revised: 07/27/2015] [Accepted: 07/27/2015] [Indexed: 12/22/2022]
|
17
|
Simultaneous Detection of Azodicarbonamide and the Metabolic Product Semicarbazide in Flour by Capillary Electrophoresis. FOOD ANAL METHOD 2015. [DOI: 10.1007/s12161-015-0276-6] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
|
18
|
Deáková Z, Ďuračková Z, Armstrong DW, Lehotay J. Two-dimensional high performance liquid chromatography for determination of homocysteine, methionine and cysteine enantiomers in human serum. J Chromatogr A 2015; 1408:118-24. [PMID: 26169904 DOI: 10.1016/j.chroma.2015.07.009] [Citation(s) in RCA: 43] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2015] [Revised: 06/25/2015] [Accepted: 07/01/2015] [Indexed: 11/18/2022]
Abstract
A two-dimensional HPLC system with electrochemical detection was used for determination of homocysteine, methionine and cysteine enantiomers in biological samples. The amino acid separations were not possible only by using a chiral column. The compounds were separated from each other on an achiral column (Purospher RP-18 endcapped 250-4mm, 5μm) and their enantiomers were separated on Chirobiotic TAG (250-4.6mm, 5μm) column in an on-line system. The mobile phase composition and a choice of electrode potentials for detection were investigated. The l-enantiomers always eluted before the d-enantiomers. The proposed method was applied to the analysis of human serum of healthy volunteers and patients with multiple sclerosis. The limit of detection (LOD) and quantitation (LOQ) were defined as the concentration that produced a signal-to-noise ratio (S/N) of 3 and 10. The method LOD values were found to be between 0.05 and 0.50μgmL(-1). The range of LOQ values were between 0.17 and 1.67μgmL(-1), respectively.
Collapse
Affiliation(s)
- Zuzana Deáková
- Institute of Analytical Chemistry, Faculty of Chemical and Food Technology, Slovak University of Technology, Radlinského 9, 812 37 Bratislava, Slovakia; Institute of Medical Chemistry, Biochemistry and Clinical Biochemistry, Faculty of Medicine, Comenius University, Sasinkova 2, 811 08 Bratislava, Slovakia
| | - Zdeňka Ďuračková
- Institute of Medical Chemistry, Biochemistry and Clinical Biochemistry, Faculty of Medicine, Comenius University, Sasinkova 2, 811 08 Bratislava, Slovakia
| | - Daniel W Armstrong
- Department of Chemistry and Biochemistry, University of Texas at Arlington, 700 Planetarium Place, Arlington, TX 76019, USA
| | - Jozef Lehotay
- Institute of Analytical Chemistry, Faculty of Chemical and Food Technology, Slovak University of Technology, Radlinského 9, 812 37 Bratislava, Slovakia.
| |
Collapse
|
19
|
Turkia H, Sirén H, Penttilä M, Pitkänen JP. Capillary electrophoresis with laser-induced fluorescence detection for studying amino acid uptake by yeast during beer fermentation. Talanta 2015; 131:366-71. [DOI: 10.1016/j.talanta.2014.07.101] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2014] [Revised: 07/28/2014] [Accepted: 07/31/2014] [Indexed: 10/24/2022]
|
20
|
Glatz Z. On-capillary derivatisation as an approach to enhancing sensitivity in capillary electrophoresis. Electrophoresis 2014; 36:744-63. [DOI: 10.1002/elps.201400449] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2014] [Revised: 10/09/2014] [Accepted: 10/11/2014] [Indexed: 12/23/2022]
Affiliation(s)
- Zdeněk Glatz
- Department of Biochemistry; Faculty of Science and CEITEC; Masaryk University; Brno Czech Republic
| |
Collapse
|
21
|
Zhou XJ, Chen J, Shi YP. Determination of Amino Acids in Plasma and Nutritional Supplements by Capillary Electrophoresis with Copper(II) Coordination. ANAL LETT 2014. [DOI: 10.1080/00032719.2014.936019] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
|
22
|
Giuffrida A, Maccarrone G, Cucinotta V, Orlandini S, Contino A. Recent advances in chiral separation of amino acids using capillary electromigration techniques. J Chromatogr A 2014; 1363:41-50. [DOI: 10.1016/j.chroma.2014.08.041] [Citation(s) in RCA: 57] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2014] [Revised: 08/08/2014] [Accepted: 08/11/2014] [Indexed: 02/07/2023]
|
23
|
Fradi I, Farcas E, Saïd AB, Yans ML, Lamalle C, Somsen GW, Prior A, de Jong GJ, Kallel M, Crommen J, Servais AC, Fillet M. In-capillary derivatization with (-)-1-(9-fluorenyl)ethyl chloroformate as chiral labeling agent for the electrophoretic separation of amino acids. J Chromatogr A 2014; 1363:338-47. [PMID: 25082527 DOI: 10.1016/j.chroma.2014.07.022] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2014] [Revised: 07/03/2014] [Accepted: 07/09/2014] [Indexed: 11/25/2022]
Abstract
An original micellar electrokinetic chromatography (MEKC) method using in-capillary derivatization with a chiral labeling reagent was developed for the separation of amino acid (AA) derivatives. The potential of (-)-1-(9-fluorenyl)-ethyl chloroformate (FLEC) as in-capillary derivatization agent is described for the first time. Several parameters for in-capillary derivatization and subsequent MEKC separation were systematically investigated using experimental designs. Firstly experimental conditions for in-capillary derivatization were optimized using face-centered central composite design (FCCD). Mixing voltage and time as well as concentration of the labeling solution were investigated. Efficient labeling was achieved by sequential injection of AAs and FLEC labeling solution followed by the application of a voltage of 0.2 kV for 570 s. The background electrolyte (BGE) composition was then optimized in order to achieve selectivity. A FCCD was performed with two factors, namely the sodium dodecyl sulfate (SDS) concentration and the percentage of propan-2-ol (IPA). The separation of 12 pairs of derivatized AA (FLEC-AA) diastereomers was achieved with resolution values comprised between 3 and 20. Furthermore, an efficient derivatization and separation of 29 FLEC-AA derivatives were achieved in a single run using a buffer made up of 40 mM sodium tetraborate, 21 mM SDS and 8.5% IPA. The method was successfully applied to the analysis of spiked artificial cerebrospinal fluid (aCSF) sample.
Collapse
Affiliation(s)
- Ines Fradi
- Laboratory of Analytical Pharmaceutical Chemistry, Dept. of Pharmaceutical Sciences, CIRM, University of Liège, CHU, B36, B-4000 Liège 1, Belgium; Laboratory of Chemical, Galenical and Pharmacological Drug Development, Faculty of Pharmacy, University of Monastir, 5000 Monastir, Tunisia; Drug Control National Laboratory, Tunis, Tunisia
| | - Elena Farcas
- Laboratory of Analytical Pharmaceutical Chemistry, Dept. of Pharmaceutical Sciences, CIRM, University of Liège, CHU, B36, B-4000 Liège 1, Belgium
| | - Azza Ben Saïd
- Laboratory of Chemical, Galenical and Pharmacological Drug Development, Faculty of Pharmacy, University of Monastir, 5000 Monastir, Tunisia
| | - Marie-Laure Yans
- Laboratory of Analytical Pharmaceutical Chemistry, Dept. of Pharmaceutical Sciences, CIRM, University of Liège, CHU, B36, B-4000 Liège 1, Belgium
| | - Caroline Lamalle
- Laboratory of Analytical Pharmaceutical Chemistry, Dept. of Pharmaceutical Sciences, CIRM, University of Liège, CHU, B36, B-4000 Liège 1, Belgium
| | - Govert W Somsen
- Department of Chemistry and Pharmaceutical Sciences, University of Amsterdam, The Netherlands
| | - Amir Prior
- Department of Chemistry and Pharmaceutical Sciences, University of Amsterdam, The Netherlands
| | - Gerhardus J de Jong
- Department of Chemistry and Pharmaceutical Sciences, University of Amsterdam, The Netherlands
| | - Mohamed Kallel
- Laboratory of Chemical, Galenical and Pharmacological Drug Development, Faculty of Pharmacy, University of Monastir, 5000 Monastir, Tunisia
| | - Jacques Crommen
- Laboratory of Analytical Pharmaceutical Chemistry, Dept. of Pharmaceutical Sciences, CIRM, University of Liège, CHU, B36, B-4000 Liège 1, Belgium
| | - Anne-Catherine Servais
- Laboratory of Analytical Pharmaceutical Chemistry, Dept. of Pharmaceutical Sciences, CIRM, University of Liège, CHU, B36, B-4000 Liège 1, Belgium
| | - Marianne Fillet
- Laboratory of Analytical Pharmaceutical Chemistry, Dept. of Pharmaceutical Sciences, CIRM, University of Liège, CHU, B36, B-4000 Liège 1, Belgium.
| |
Collapse
|
24
|
Řezanka P, Navrátilová K, Řezanka M, Král V, Sýkora D. Application of cyclodextrins in chiral capillary electrophoresis. Electrophoresis 2014; 35:2701-21. [DOI: 10.1002/elps.201400145] [Citation(s) in RCA: 123] [Impact Index Per Article: 12.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2014] [Revised: 05/14/2014] [Accepted: 05/19/2014] [Indexed: 12/13/2022]
Affiliation(s)
- Pavel Řezanka
- Department of Analytical Chemistry; Institute of Chemical Technology; Prague Czech Republic
| | - Klára Navrátilová
- Department of Analytical Chemistry; Institute of Chemical Technology; Prague Czech Republic
| | - Michal Řezanka
- Institute for Nanomaterials; Advanced Technologies and Innovation; Technical University of Liberec; Liberec Czech Republic
| | - Vladimír Král
- Department of Analytical Chemistry; Institute of Chemical Technology; Prague Czech Republic
| | - David Sýkora
- Department of Analytical Chemistry; Institute of Chemical Technology; Prague Czech Republic
| |
Collapse
|
25
|
Tian M, Zhang J, Mohamed AC, Han Y, Guo L, Yang L. Efficient capillary electrophoresis separation and determination of free amino acids in beer samples. Electrophoresis 2013; 35:577-84. [DOI: 10.1002/elps.201300416] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2013] [Revised: 10/15/2013] [Accepted: 10/28/2013] [Indexed: 02/06/2023]
Affiliation(s)
- Miaomiao Tian
- Faculty of Chemistry; Northeast Normal University; Changchun Jilin P. R. China
| | - Junfu Zhang
- Department of Public Security of Jilin Province; Institute of Forensic Science; Changchun Jilin P. R. China
| | | | - Yingzi Han
- Faculty of Chemistry; Northeast Normal University; Changchun Jilin P. R. China
| | - Liping Guo
- Faculty of Chemistry; Northeast Normal University; Changchun Jilin P. R. China
| | - Li Yang
- Faculty of Chemistry; Northeast Normal University; Changchun Jilin P. R. China
| |
Collapse
|
26
|
Sánchez-Hernández L, Guijarro-Diez M, Marina ML, Crego AL. New approaches in sensitive chiral CE. Electrophoresis 2013; 35:12-27. [DOI: 10.1002/elps.201300355] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2013] [Revised: 09/27/2013] [Accepted: 09/27/2013] [Indexed: 11/10/2022]
Affiliation(s)
- Laura Sánchez-Hernández
- Department of Analytical Chemistry; Physical Chemistry and Chemical Engineering, Faculty of Biology, Environmental Sciences and Chemistry, University of Alcalá; Alcalá de Henares Madrid Spain
| | - Miguel Guijarro-Diez
- Department of Analytical Chemistry; Physical Chemistry and Chemical Engineering, Faculty of Biology, Environmental Sciences and Chemistry, University of Alcalá; Alcalá de Henares Madrid Spain
| | - María Luisa Marina
- Department of Analytical Chemistry; Physical Chemistry and Chemical Engineering, Faculty of Biology, Environmental Sciences and Chemistry, University of Alcalá; Alcalá de Henares Madrid Spain
| | - Antonio L. Crego
- Department of Analytical Chemistry; Physical Chemistry and Chemical Engineering, Faculty of Biology, Environmental Sciences and Chemistry, University of Alcalá; Alcalá de Henares Madrid Spain
| |
Collapse
|
27
|
Poinsot V, Ong-Meang V, Gavard P, Couderc F. Recent advances in amino acid analysis by capillary electromigration methods, 2011-2013. Electrophoresis 2013; 35:50-68. [DOI: 10.1002/elps.201300306] [Citation(s) in RCA: 52] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2013] [Revised: 09/11/2013] [Accepted: 09/11/2013] [Indexed: 12/28/2022]
Affiliation(s)
- Véréna Poinsot
- Laboratoire des IMRCP; Université Paul Sabatier; Toulouse France
| | | | - Pierre Gavard
- Laboratoire des IMRCP; Université Paul Sabatier; Toulouse France
| | - François Couderc
- Laboratoire des IMRCP; Université Paul Sabatier; Toulouse France
| |
Collapse
|
28
|
Solid phase analytical derivatization as a sample preparation method. J Chromatogr A 2013; 1296:204-13. [DOI: 10.1016/j.chroma.2013.03.020] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2013] [Revised: 03/09/2013] [Accepted: 03/11/2013] [Indexed: 11/21/2022]
|