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Bulavchenko AI, Shaparenko NO, Demidova MG. Synthesis, characterization, and electrophoretic concentration of titanium dioxide nanoparticles in AOT microemulsions. Electrophoresis 2017; 38:1678-1684. [DOI: 10.1002/elps.201600542] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2016] [Revised: 03/28/2017] [Accepted: 03/28/2017] [Indexed: 11/12/2022]
Affiliation(s)
- Alexander I. Bulavchenko
- Nikolaev Institute of Inorganic Chemistry; Russian Academy of Sciences; Siberian Branch; Novosibirsk Russia
| | - Nikita O. Shaparenko
- Nikolaev Institute of Inorganic Chemistry; Russian Academy of Sciences; Siberian Branch; Novosibirsk Russia
- Novosibirsk State University; Novosibirsk Russia
| | - Marina G. Demidova
- Nikolaev Institute of Inorganic Chemistry; Russian Academy of Sciences; Siberian Branch; Novosibirsk Russia
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2
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Shi L, Wang J, Feng J, Zhao S, Wang Z, Tao H, Liu S. Determination of chlorophenols in water using dispersive liquid-liquid microextraction coupled with water-in-oil microemulsion electrokinetic chromatography in normal stacking mode. J Sep Sci 2017; 40:2662-2670. [DOI: 10.1002/jssc.201700175] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2017] [Revised: 04/11/2017] [Accepted: 04/15/2017] [Indexed: 11/09/2022]
Affiliation(s)
- Ludi Shi
- Shaanxi Key Laboratory of Natural Products and Chemical Biology, College of Chemistry and Pharmacy; Northwest A and F University; Yangling Shaanxi China
| | - Jin Wang
- Shaanxi Key Laboratory of Natural Products and Chemical Biology, College of Chemistry and Pharmacy; Northwest A and F University; Yangling Shaanxi China
| | - Jing Feng
- Shaanxi Key Laboratory of Natural Products and Chemical Biology, College of Chemistry and Pharmacy; Northwest A and F University; Yangling Shaanxi China
| | - Sihan Zhao
- Shaanxi Key Laboratory of Natural Products and Chemical Biology, College of Chemistry and Pharmacy; Northwest A and F University; Yangling Shaanxi China
| | - Zhengmeng Wang
- Shaanxi Key Laboratory of Natural Products and Chemical Biology, College of Chemistry and Pharmacy; Northwest A and F University; Yangling Shaanxi China
| | - Hu Tao
- Shaanxi Key Laboratory of Natural Products and Chemical Biology, College of Chemistry and Pharmacy; Northwest A and F University; Yangling Shaanxi China
| | - Shuhui Liu
- Shaanxi Key Laboratory of Natural Products and Chemical Biology, College of Chemistry and Pharmacy; Northwest A and F University; Yangling Shaanxi China
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3
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Ibáñez C, Acunha T, Valdés A, García-Cañas V, Cifuentes A, Simó C. Capillary Electrophoresis in Food and Foodomics. Methods Mol Biol 2016; 1483:471-507. [PMID: 27645749 DOI: 10.1007/978-1-4939-6403-1_22] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Quality and safety assessment as well as the evaluation of other nutritional and functional properties of foods imply the use of robust, efficient, sensitive, and cost-effective analytical methodologies. Among analytical technologies used in the fields of food analysis and foodomics, capillary electrophoresis (CE) has generated great interest for the analyses of a large number of compounds due to its high separation efficiency, extremely small sample and reagent requirements, and rapid analysis. The introductory section of this chapter provides an overview of the recent applications of capillary electrophoresis (CE) in food analysis and foodomics. Relevant reviews and research articles on these topics are tabulated including papers published in the period 2011-2014. In addition, to illustrate the great capabilities of CE in foodomics the chapter describes the main experimental points to be taken into consideration for a metabolomic study of the antiproliferative effect of carnosic acid (a natural diterpene found in rosemary) against HT-29 human colon cancer cells.
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Affiliation(s)
- Clara Ibáñez
- Foodomics Laboratory, CIAL, CSIC, c/Nicolas Cabrera, 9 Campus Cantoblanco, Madrid, 28049, Spain
| | - Tanize Acunha
- Foodomics Laboratory, CIAL, CSIC, c/Nicolas Cabrera, 9 Campus Cantoblanco, Madrid, 28049, Spain
- CAPES Foundation, Ministry of Education of Brazil, Brasília, DF, 70.040-020, Brazil
| | - Alberto Valdés
- Foodomics Laboratory, CIAL, CSIC, c/Nicolas Cabrera, 9 Campus Cantoblanco, Madrid, 28049, Spain
| | - Virginia García-Cañas
- Foodomics Laboratory, CIAL, CSIC, c/Nicolas Cabrera, 9 Campus Cantoblanco, Madrid, 28049, Spain
| | - Alejandro Cifuentes
- Foodomics Laboratory, CIAL, CSIC, c/Nicolas Cabrera, 9 Campus Cantoblanco, Madrid, 28049, Spain
| | - Carolina Simó
- Foodomics Laboratory, CIAL, CSIC, c/Nicolas Cabrera, 9 Campus Cantoblanco, Madrid, 28049, Spain.
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Abstract
Microemulsion electrokinetic chromatography (MEEKC) is a special mode of capillary electrophoresis employing a microemulsion as carrier electrolyte. Analytes may partition between the aqueous phase of the microemulsion and its oil droplets which act as a pseudostationary phase. The technique is well suited for the separation of neutral species, in which case charged oil droplets (obtained by addition of an anionic or cationic surfactant) are present. A single set of separation parameters may be sufficient for separation of a wide range of analytes belonging to quite different chemical classes. Fine-tuning of resolution and analysis time may be achieved by addition of organic solvents, by changes in the nature of the surfactants (and cosurfactants) used to stabilize the microemulsion, or by various additives that may undergo some additional interactions with the analytes. Besides the separation of neutral analytes (which may be the most important application area of MEEKC), it can also be employed for cationic and/or anionic species. In this chapter, MEEKC conditions are summarized that have proven their reliability for routine analysis. Furthermore, the mechanisms encountered in MEEKC allow an efficient on-capillary preconcentration of analytes, so that the problem of poor concentration sensitivity of ultraviolet absorbance detection is circumvented.
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Affiliation(s)
- Wolfgang Buchberger
- Institut für Analytische Chemie, Universität Linz, TNF-Tower, T 209, Altenbergerstraße 69, Linz, 4040, Austria.
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5
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Domínguez-Vega E, Pérez-Fernández V, Crego AL, García MÁ, Marina ML. Recent advances in CE analysis of antibiotics and its use as chiral selectors. Electrophoresis 2014; 35:28-49. [PMID: 24395661 DOI: 10.1002/elps.201300347] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2013] [Revised: 10/06/2013] [Accepted: 10/06/2013] [Indexed: 12/24/2022]
Abstract
Antibiotics are a class of therapeutic molecules widely employed in both human and veterinary medicine. This article reviews the most recent advances in the analysis of antibiotics by CE in pharmaceutical, environmental, food, and biomedical fields. Emphasis is placed on the strategies to increase sensitivity as diverse off-line, in-line, and on-line preconcentration approaches and the use of different detection systems. The use of CE in the microchip format for the analysis of antibiotics is also reviewed in this article. Moreover, since the use of antibiotics as chiral selectors in CE has grown in the last years, a new section devoted to this aspect has been included. This review constitutes an update of previous published reviews and covers the literature published from June 2011 until June 2013.
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Affiliation(s)
- Elena Domínguez-Vega
- Department of Biomolecular Analysis, Faculty of Sciences, Utrecht University, Utrecht, The Netherlands
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6
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CIEF separation, UV detection, and quantification of ampholytic antibiotics and bacteria from different matrices. Anal Bioanal Chem 2014; 406:6285-96. [DOI: 10.1007/s00216-014-8053-8] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2014] [Revised: 06/25/2014] [Accepted: 07/18/2014] [Indexed: 01/24/2023]
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7
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Piñero MY, Bauza R, Arce L, Valcárcel M. Determination of penicillins in milk of animal origin by capillary electrophoresis: Is sample treatment the bottleneck for routine laboratories? Talanta 2014; 119:75-82. [DOI: 10.1016/j.talanta.2013.10.044] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2013] [Revised: 10/15/2013] [Accepted: 10/21/2013] [Indexed: 10/26/2022]
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8
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García-Cañas V, Simó C, Castro-Puyana M, Cifuentes A. Recent advances in the application of capillary electromigration methods for food analysis and Foodomics. Electrophoresis 2013; 35:147-69. [DOI: 10.1002/elps.201300315] [Citation(s) in RCA: 66] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2013] [Revised: 08/19/2013] [Accepted: 08/19/2013] [Indexed: 12/25/2022]
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9
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XIAO J, HUANG Y, WANG M, CHEN G. Analysis of phthalate esters in plastic-packaging bags by on-line sample stacking-microemulsion electrokinetic chromatography. Se Pu 2013; 30:951-6. [DOI: 10.3724/sp.j.1123.2012.05024] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022] Open
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10
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Yang H, Ding Y, Cao J, Li P. Twenty-one years of microemulsion electrokinetic chromatography (1991-2012): A powerful analytical tool. Electrophoresis 2013; 34:1273-94. [DOI: 10.1002/elps.201200494] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2012] [Revised: 12/18/2012] [Accepted: 01/22/2013] [Indexed: 12/18/2022]
Affiliation(s)
- Hua Yang
- State Key Laboratory of Natural Medicines (China Pharmaceutical University); Nanjing; P. R. China
| | - Yao Ding
- State Key Laboratory of Natural Medicines (China Pharmaceutical University); Nanjing; P. R. China
| | - Jun Cao
- College of Material Chemistry and Chemical Engineering; Hangzhou Normal University; Hangzhou; P. R. China
| | - Ping Li
- State Key Laboratory of Natural Medicines (China Pharmaceutical University); Nanjing; P. R. China
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Šlampová A, Malá Z, Pantůčková P, Gebauer P, Boček P. Contemporary sample stacking in analytical electrophoresis. Electrophoresis 2012; 34:3-18. [PMID: 23161176 DOI: 10.1002/elps.201200346] [Citation(s) in RCA: 63] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2012] [Revised: 07/20/2012] [Accepted: 07/20/2012] [Indexed: 12/29/2022]
Abstract
Sample stacking is a term denoting a multifarious class of methods and their names that are used daily in CE for online concentration of diluted samples to enhance separation efficiency and sensitivity of analyses. The essence of these methods is that analytes present at low concentrations in a large injected sample zone are concentrated into a short and sharp zone (stack) in the separation capillary. Then the stacked analytes are separated and detected. Regardless of the diversity of the stacking electromigration methods, one can distinguish four main principles that form the bases of nearly all of them: (i) Kohlrausch adjustment of concentrations, (ii) pH step, (iii) micellar methods, and (iv) transient ITP. This contribution is a continuation of our previous reviews on the topic and brings an overview of papers published during 2010-2012 and relevant to the mentioned principles (except the last one which is covered by another review in this issue).
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Affiliation(s)
- Andrea Šlampová
- Institute of Analytical Chemistry of the Academy of Sciences of the Czech Republic, Brno, Czech Republic
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12
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Ryan R, Altria K, McEvoy E, Donegan S, Power J. A review of developments in the methodology and application of microemulsion electrokinetic chromatography. Electrophoresis 2012; 34:159-77. [PMID: 23161220 DOI: 10.1002/elps.201200375] [Citation(s) in RCA: 65] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2012] [Revised: 08/27/2012] [Accepted: 08/27/2012] [Indexed: 11/10/2022]
Abstract
MEEKC is a mode of CE, which utilizes microemulsion (ME) as the BGE to achieve separation of a diverse range of analytes. MEs are composed of nanometer-sized oil droplets suspended in aqueous buffer which are stabilized by the presence of a surfactant and co-surfactant. These MEs are commonly referred to as oil-in-water MEs and their application in MEEKC has been extensively examined. This review details advances in the theory, methodology, and application of MEEKC during the period 2010-2012. Areas covered include online sample concentration, advances in chiral separations, use of coated capillaries, chemometric approaches, and the use of novel additives to the ME system. This review also provides the reader with an introduction to MEEKC and a presentation of recent applications.
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Affiliation(s)
- Richie Ryan
- Waterford Institute of Technology, Waterford, Ireland.
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Wen Y, Li J, Ma J, Chen L. Recent advances in enrichment techniques for trace analysis in capillary electrophoresis. Electrophoresis 2012; 33:2933-52. [PMID: 23019127 DOI: 10.1002/elps.201200240] [Citation(s) in RCA: 83] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2012] [Revised: 06/06/2012] [Accepted: 06/28/2012] [Indexed: 01/25/2023]
Abstract
CE is gaining great popularity as a well-established separation technique for many fields such as pharmaceutical research, clinical application, environmental monitoring, and food analysis, owing to its high resolving power, rapidity, and small amount of samples and reagents required. However, the sensitivity in CE analysis is still considered as being inferior to that in HPLC analysis. Diverse enrichment methods and techniques have been increasingly developed for overcoming this issue. In this review, we summarize the recent advances in enrichment techniques containing off-line preconcentration (sample preparation) and on-line concentration (sample stacking) to enhancing sensitivity in CE for trace analysis over the last 5 years. Some relatively new cleanup and preconcentration methods involving the use of dispersive liquid-liquid microextraction, supercritical fluid extraction, matrix solid-phase dispersion, etc., and the continued use and improvement of conventional SPE, have been comprehensively reviewed and proved effective preconcentration alternatives for liquid, semisolid, and solid samples. As for CE on-line stacking, we give an overview of field amplication, sweeping, pH regulation, and transient isotachophoresis, and the coupling of multiple modes. Moreover, some limitations and comparisons related to such methods/techniques are also discussed. Finally, the combined use of various enrichment techniques and some significant attempts are proposed to further promote analytical merits in CE.
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Affiliation(s)
- Yingying Wen
- Key Laboratory of Coastal Zone Environmental Processes, Yantai Institute of Coastal Zone Research-YIC, Chinese Academy of Sciences-CAS, Shandong Provincial Key Laboratory of Coastal Zone Environmental Processes, YICCAS, Yantai, P. R. China
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14
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Yu L, Chu K, Ye H, Liu X, Yu L, Xu X, Chen G. Recent advances in microemulsion electrokinetic chromatography. Trends Analyt Chem 2012. [DOI: 10.1016/j.trac.2011.11.003] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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15
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Poly (acrylic acid) microchannel modification for the enhanced resolution of catecholamines microchip electrophoresis with electrochemical detection. Anal Chim Acta 2012; 724:136-43. [DOI: 10.1016/j.aca.2012.02.053] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2012] [Revised: 02/27/2012] [Accepted: 02/29/2012] [Indexed: 12/14/2022]
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