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Zhang L, Tan QG, Fan JQ, Sun C, Luo YT, Liang RP, Qiu JD. Microfluidics for chiral separation of biomolecules. Trends Analyt Chem 2022. [DOI: 10.1016/j.trac.2022.116842] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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2
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Mandal HK, Patel BK, Saha S, Saha S, Mahapatra A. Effect of cyclodextrins’ cavity on the kinetics of alkaline hydrolysis of tris(1,10-Phenanthroline)Fe(II) in presence of surfactant. J DISPER SCI TECHNOL 2021. [DOI: 10.1080/01932691.2021.1993891] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Affiliation(s)
| | - Biman Kumar Patel
- Department of Chemistry, Jadavpur University, Kolkata, West Bengal, India
| | - Suman Saha
- Department of Chemistry, Jadavpur University, Kolkata, West Bengal, India
| | - Sushanta Saha
- Department of Chemistry, Sree Chaitanya College, Habra, West Bengal, India
| | - Ambikesh Mahapatra
- Department of Chemistry, Jadavpur University, Kolkata, West Bengal, India
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3
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Lu N, Kutter JP. Recent advances in microchip enantioseparation and analysis. Electrophoresis 2020; 41:2122-2135. [PMID: 32949465 DOI: 10.1002/elps.202000242] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2020] [Revised: 09/10/2020] [Accepted: 09/16/2020] [Indexed: 12/26/2022]
Abstract
This review summarizes recent developments (over the past decade) in the field of microfluidics-based solutions for enantiomeric separation and detection. The progress in various formats of microchip electrodriven separations, such as MCE, microchip electrochromatography, and multidimensional separation techniques, is discussed. Innovations covering chiral stationary phases, surface coatings, and modification strategies to improve resolution, as well as integration with detection systems, are reported. Finally, combinations with other microfluidic functional units are also presented and highlighted.
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Affiliation(s)
- Nan Lu
- Department of Pharmacy, University of Copenhagen, Copenhagen, Denmark
| | - Jörg P Kutter
- Department of Pharmacy, University of Copenhagen, Copenhagen, Denmark
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4
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Lucarini M. Improving Spin Probe Methodologies to Investigate Supramolecular Assemblies. European J Org Chem 2020. [DOI: 10.1002/ejoc.201901871] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Affiliation(s)
- Marco Lucarini
- Department of Chemistry “G. Ciamician”; Alma Mater Studiorum-University of Bologna; Via San Giacomo 11 Bologna Italy
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5
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Milcovich G, Antunes FE, Grassi M, Asaro F. Stabilization of unilamellar catanionic vesicles induced by β-cyclodextrins: A strategy for a tunable drug delivery depot. Int J Pharm 2018; 548:474-479. [DOI: 10.1016/j.ijpharm.2018.07.026] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2018] [Revised: 07/05/2018] [Accepted: 07/06/2018] [Indexed: 12/01/2022]
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6
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Grodner B, Łukaszkiewicz J, Napiórkowska M. Determination of the stereoisomers in aqueous medium and serum and validation studies of racemic aminoalkanol derivatives of 1,7-dimethyl-8,9-diphenyl-4-azatricyclo[5.2.1.0(2,6) ]dec-8-ene-3,5,10-trione, potential new anticancer drugs, by capillary electrophoresis. J Sep Sci 2018; 39:3246-53. [PMID: 27421088 DOI: 10.1002/jssc.201600182] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2016] [Revised: 06/16/2016] [Accepted: 06/17/2016] [Indexed: 12/21/2022]
Abstract
A new method for the determination of the stereoisomers, in aqueous medium and serum, of the racemic aminoalkanol derivatives I and II of 1,7-dimethyl-8,9-diphenyl-4-azatricyclo[5.2.1.0(2,6) ]dec-8-ene-3,5,10-trione, which were found in earlier studies to be potential anticancer drugs, was developed and validated. The optimized conditions included 25 mM phosphate buffer adjusted to pH 2.5, containing γ-cyclodextrin at a concentration of 5% m/v, as background electrolyte, an applied voltage of +10 kV, and a temperature of 25°C. Separations were carried out using a fused-silica capillary. The developed method of determining the enantiomers of compounds I(S), I(R) and II(S), II(R) was characterized by the following parameters: a detection time within 10.8 min, a detection limit in the range of 141.2-141.7 ng/mL using the UV absorption detection at 200 nm. Good linearity (R(2) = 0.9989-0.9998) was achieved within the range of concentrations studied. A very good extraction yield of 95.4-99.7% was achieved, and recoveries were carried out from both aqueous solutions and matrix serum. The repeatability of the method for peak areas with an accuracy of the determined concentrations of the analytes in the range of 1.43-1.89%, and limits of quantitation in the range of 432.4-436.3 ng/mL were achieved.
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Affiliation(s)
- Błażej Grodner
- Chair and Department of Biochemistry and Clinical Chemistry, Medical University of Warsaw, Warsaw, Poland
| | - Jacek Łukaszkiewicz
- Chair and Department of Biochemistry and Clinical Chemistry, Medical University of Warsaw, Warsaw, Poland
| | - Mariola Napiórkowska
- Chair and Department of Biochemistry, Medical University of Warsaw, Warsaw, Poland
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7
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Promzeleva M, Volkova T, Proshin A, Siluykov O, Mazur A, Tolstoy P, Ivanov S, Kamilov F, Terekhova I. Improved Biopharmaceutical Properties of Oral Formulations of 1,2,4-Thiadiazole Derivative with Cyclodextrins: in Vitro and in Vivo Evaluation. ACS Biomater Sci Eng 2018; 4:491-501. [PMID: 33418739 DOI: 10.1021/acsbiomaterials.7b00887] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
The synthesized 1,2,4-thiadiazole derivative displaying biological activity has low aqueous solubility and dissolution rate. Novel oral formulations of thiadiazole with β- and hydroxypropyl-β-cyclodextrins were obtained by grinding and freeze-drying methods with the purpose to improve the aqueous solubility. Complex formation of 1,2,4-thiadiazole derivative with cyclodextrins was confirmed by means of solid-state 13C MAS CP/TOSS NMR. Solubility, dissolution rate and permeability of the solid inclusion complexes were evaluated in different biorelevant media (SGF, FaSSGF, FaSSIF) simulating the conditions in the gastrointestinal tract. It was demonstrated that the content of biorelevant media affects the properties of the inclusion complexes. In particular, solubilizing effect of cyclodextrins became less pronounced when the micelles of taurocholic acid and lecithin are formed in the dissolution media. The inclusion of thiadiazole into cyclodextrin cavity is in competition with its partitioning into the micelles and this should be taken into account when the in vivo behavior is predicted. The results of in vitro and in vivo experiments were found to be in agreement and showed the highest solubility, dissolution rate and bioavailability of the freeze-dried complexes of thiadiazole with hydroxypropyl-β-cyclodextrin. These complexes can be proposed as more effective dosage forms for oral administration.
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Affiliation(s)
- Maria Promzeleva
- G.A. Krestov Institute of Solution Chemistry, Russian Academy of Sciences, Ivanovo 153045, Russia
| | - Tatyana Volkova
- G.A. Krestov Institute of Solution Chemistry, Russian Academy of Sciences, Ivanovo 153045, Russia
| | - Alexey Proshin
- Institute of Physiologically Active Compounds, Russian Academy of Sciences, Chernogolovka 142432, Russia
| | - Oleg Siluykov
- G.A. Krestov Institute of Solution Chemistry, Russian Academy of Sciences, Ivanovo 153045, Russia.,St. Petersburg State University, St. Petersburg 199034, Russia
| | - Anton Mazur
- St. Petersburg State University, St. Petersburg 199034, Russia
| | - Peter Tolstoy
- St. Petersburg State University, St. Petersburg 199034, Russia
| | - Sergey Ivanov
- Ufa Institute of Chemistry, Russian Academy of Sciences, Ufa 450054, Russia
| | - Felix Kamilov
- Bashkir State Medical University, Ufa 450076, Russia
| | - Irina Terekhova
- G.A. Krestov Institute of Solution Chemistry, Russian Academy of Sciences, Ivanovo 153045, Russia
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8
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Combined approach using capillary electrophoresis, NMR and molecular modeling for ambrisentan related substances analysis: Investigation of intermolecular affinities, complexation and separation mechanism. J Pharm Biomed Anal 2017; 144:220-229. [DOI: 10.1016/j.jpba.2017.01.038] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2016] [Revised: 12/16/2016] [Accepted: 01/19/2017] [Indexed: 11/20/2022]
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9
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Přibylka A, Švidrnoch M, Tesařová E, Armstrong DW, Maier V. The empirical comparison of cyclofructans and cyclodextrins as chiral selectors in capillary electrophoretic separation of atropisomers ofR,S-1,1’-binaphthalene-2,2’-diyl hydrogen phosphate. J Sep Sci 2016; 39:973-9. [DOI: 10.1002/jssc.201501012] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2015] [Revised: 11/26/2015] [Accepted: 12/02/2015] [Indexed: 01/20/2023]
Affiliation(s)
- Adam Přibylka
- Regional Centre of Advanced Technologies and Materials, Faculty of Science; Palacký University in Olomouc; Olomouc Czech Republic
| | - Martin Švidrnoch
- Regional Centre of Advanced Technologies and Materials, Faculty of Science; Palacký University in Olomouc; Olomouc Czech Republic
| | - Eva Tesařová
- Department of Physical and Macromolecular Chemistry, Faculty of Science; Charles University in Prague; Albertov 2030 Prague 2 Czech Republic
| | - Daniel W. Armstrong
- Department of Chemistry and Biochemistry; University of Texas at Arlington; Arlington TX USA
| | - Vítězslav Maier
- Regional Centre of Advanced Technologies and Materials, Faculty of Science; Palacký University in Olomouc; Olomouc Czech Republic
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10
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Use of liquid crystals for imaging different inclusion abilities of α-cyclodextrin and β-cyclodextrin toward cetyltrimethyl ammonium bromide. Chem Phys Lett 2015. [DOI: 10.1016/j.cplett.2015.08.021] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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11
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Wan Ibrahim WA, Arsad SR, Maarof H, Sanagi MM, Aboul-Enein HY. Chiral Separation of Four Stereoisomers of Ketoconazole Drugs Using Capillary Electrophoresis. Chirality 2014; 27:223-7. [DOI: 10.1002/chir.22416] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2014] [Revised: 10/21/2014] [Accepted: 10/27/2014] [Indexed: 11/07/2022]
Affiliation(s)
- Wan Aini Wan Ibrahim
- Separation Science & Technology Group (SepSTec); Department of Chemistry, Faculty of Science; Sukdai, Johor Bahru Johor Malaysia
- Nanotechnology Research Alliance; Universiti Teknologi Malaysia; Sukdai, Johor Bahru Johor Malaysia
- Ibnu Sina Institute for Fundamental Science Studies; Universiti Teknologi Malaysia; Sukdai, Johor Bahru Johor Malaysia
| | - Siti Rosilah Arsad
- Separation Science & Technology Group (SepSTec); Department of Chemistry, Faculty of Science; Sukdai, Johor Bahru Johor Malaysia
- Nanotechnology Research Alliance; Universiti Teknologi Malaysia; Sukdai, Johor Bahru Johor Malaysia
- Ibnu Sina Institute for Fundamental Science Studies; Universiti Teknologi Malaysia; Sukdai, Johor Bahru Johor Malaysia
| | - Hasmerya Maarof
- Separation Science & Technology Group (SepSTec); Department of Chemistry, Faculty of Science; Sukdai, Johor Bahru Johor Malaysia
- Nanotechnology Research Alliance; Universiti Teknologi Malaysia; Sukdai, Johor Bahru Johor Malaysia
- Ibnu Sina Institute for Fundamental Science Studies; Universiti Teknologi Malaysia; Sukdai, Johor Bahru Johor Malaysia
| | - Mohd. Marsin Sanagi
- Separation Science & Technology Group (SepSTec); Department of Chemistry, Faculty of Science; Sukdai, Johor Bahru Johor Malaysia
- Nanotechnology Research Alliance; Universiti Teknologi Malaysia; Sukdai, Johor Bahru Johor Malaysia
- Ibnu Sina Institute for Fundamental Science Studies; Universiti Teknologi Malaysia; Sukdai, Johor Bahru Johor Malaysia
| | - Hassan Y. Aboul-Enein
- Department of Pharmaceutical and Medicinal Chemistry, Pharmaceutical and Drug Industries Research Division; National Research Centre; Dokki Cairo Egypt
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12
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UHPLC determination of catechins for the quality control of green tea. J Pharm Biomed Anal 2013; 88:307-14. [PMID: 24103292 DOI: 10.1016/j.jpba.2013.08.054] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2013] [Accepted: 08/28/2013] [Indexed: 11/23/2022]
Abstract
An ultra-high performance liquid chromatography (UHPLC) with UV detection method was developed for the fast quantitation of the most represented and biologically important green tea catechins and caffeine. UHPLC system was equipped with C18 analytical column (50mm×2.1mm, 1.8μm), utilizing a mobile phase composed of pH 2.5 triethanolamine phosphate buffer (0.1M) and acetonitrile in a gradient elution mode; under these conditions six major catechins and caffeine were separated in a 3min run. The method was fully validated in terms of precision, detection and quantification limits, linearity, accuracy, and it was applied to the identification and quantification of catechins and caffeine present in green tea infusions. In particular, commercially available green tea leaves samples of different geographical origin (Sencha, Ceylon Green and Lung Ching) were used for infusion preparations (water at 85°C for 15min). The selectivity of the developed UHPLC method was confirmed by comparison with UHPLC-MS/MS analysis. The recovery of the main six catechins and caffeine on the three analyzed commercial tea samples ranged from 94 to 108% (n=3). Limits of detection (LOD) were comprised in the range 0.1-0.4μgmL(-1). An orthogonal micellar electrokinetic (MEKC) method was applied for comparative purposes on selectivity and quantitative data. The combined use of the results obtained by the two techniques allowed for a fast confirmation on quantitative characterization of commercial samples.
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Orlandini S, Gotti R, Furlanetto S. Multivariate optimization of capillary electrophoresis methods: a critical review. J Pharm Biomed Anal 2013; 87:290-307. [PMID: 23669025 DOI: 10.1016/j.jpba.2013.04.014] [Citation(s) in RCA: 73] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2013] [Accepted: 04/12/2013] [Indexed: 11/19/2022]
Abstract
In this article a review on the recent applications of multivariate techniques for optimization of electromigration methods, is presented. Papers published in the period from August 2007 to February 2013, have been taken into consideration. Upon a brief description of each of the involved CE operative modes, the characteristics of the chemometric strategies (type of design, factors and responses) applied to face a number of analytical challenges, are presented. Finally, a critical discussion, giving some practical advices and pointing out the most common issues involved in multivariate set-up of CE methods, is provided.
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Affiliation(s)
- Serena Orlandini
- Department of Chemistry "U. Schiff", University of Florence, Via U. Schiff 6, 50019 Sesto Fiorentino, Florence, Italy
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Abstract
Capillary electrophoresis (CE) has matured to one of the major liquid phase enantiodifferentiation techniques since the first report in 1985. This can be primarily attributed to the flexibility as well as the various modes available including electrokinetic chromatography (EKC), micellar electrokinetic chromatography (MEKC), and microemulsion electrokinetic chromatography (MEEKC). In contrast to chromatographic techniques, the chiral selector is mobile in the background electrolyte. Furthermore, a large variety of chiral selectors are available that can be easily combined in the same separation system. In addition, the migration order of the enantiomers can be adjusted by a number of approaches. In CE enantiodifferentiations the separation principle is comparable to chromatography while the principle of the movement of the analytes in the capillary is based on electrophoretic phenomena. The present chapter will focus on mechanistic aspects of CE enantioseparations including enantiomer migration order and the current understanding of selector-selectand structures. Selected examples of the basic enantioseparation modes EKC, MEKC, and MEEKC will be discussed.
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Affiliation(s)
- Gerhard K E Scriba
- Department of Pharmaceutical/Medicinal Chemistry, Friedrich Schiller University Jena, Philosophenweg 14, 07743, Jena, Germany,
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Silva M. Micellar electrokinetic chromatography: A review of methodological and instrumental innovations focusing on practical aspects. Electrophoresis 2012; 34:141-58. [DOI: 10.1002/elps.201200349] [Citation(s) in RCA: 78] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2012] [Revised: 07/25/2012] [Accepted: 07/25/2012] [Indexed: 12/20/2022]
Affiliation(s)
- Manuel Silva
- Department of Analytical Chemistry, Rabanales Campus; University of Cordoba; Cordoba; Spain
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Carlstedt J, Lundberg D, Dias RS, Lindman B. Condensation and decondensation of DNA by cationic surfactant, spermine, or cationic surfactant-cyclodextrin mixtures: macroscopic phase behavior, aggregate properties, and dissolution mechanisms. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2012; 28:7976-7989. [PMID: 22546152 DOI: 10.1021/la300266h] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
The macroscopic phase behavior and other physicochemical properties of dilute aqueous mixtures of DNA and the cationic surfactant hexadecyltrimethylammounium bromide (CTAB), DNA and the polyamine spermine, or DNA, CTAB, and (2-hydroxypropyl)-β-cyclodextrin (2HPβCD) were investigated. When DNA is mixed with CTAB we found, with increasing surfactant concentration, (1) free DNA coexisting with surfactant unimers, (2) free DNA coexisting with aggregates of condensed DNA and CTAB, (3) a miscibility gap where macroscopic phase separation is observed, and (4) positively overcharged aggregates of condensed DNA and CTAB. The presence of a clear solution beyond the miscibility gap cannot be ascribed to self-screening by the charges from the DNA and/or the surfactant; instead, hydrophobic interactions among the surfactants are instrumental for the observed behavior. It is difficult to judge whether the overcharged mixed aggregates represent an equilibrium situation or not. If the excess surfactant was not initially present, but added to a preformed precipitate, redissolution was, in consistency with previous reports, not observed; thus, kinetic effects have major influence on the behavior. Mixtures of DNA and spermine also displayed a miscibility gap; however, positively overcharged aggregates were not identified, and redissolution with excess spermine can be explained by electrostatics. When 2HPβCD was added to a DNA-CTAB precipitate, redissolution was observed, and when it was added to the overcharged aggregates, the behavior was essentially a reversal of that of the DNA-CTAB system. This is attributed to an effectively quantitative formation of 1:1 2HPβCD-surfactant inclusion complexes, which results in a gradual decrease in the concentration of effectively available surfactant with increasing 2HPβCD concentration.
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Affiliation(s)
- Jonas Carlstedt
- Physical Chemistry, Center for Chemistry and Chemical Engineering, Lund University, Lund, Sweden.
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Gotti R, Furlanetto S, Santagati NA. Analysis of Cyclosporin A and Main Degradation Impurities by Cyclodextrin–Modified Micellar Electrokinetic Chromatography. ANAL LETT 2012. [DOI: 10.1080/00032719.2011.653897] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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18
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Carlstedt J, Bilalov A, Krivtsova E, Olsson U, Lindman B. Cyclodextrin-surfactant coassembly depends on the cyclodextrin ability to crystallize. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2012; 28:2387-2394. [PMID: 22217424 DOI: 10.1021/la203673w] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
Full equilibrium phase diagrams are presented for two ternary systems composed of the cationic surfactant dodecyltrimethylammonium bromide (DTAB), water (D(2)O), and a cyclodextrin, either β-cyclodextrin (β-CD) or (2-hydroypropyl)-β-cyclodextrin (2HPβCD). (2)H NMR, SAXS, WAXS, and visual examination were used to determine the phase boundaries and characterize the nature of the phases formed. Additionally, diffusion (1)H NMR was used to investigate parts of the diagrams. The water solubility of 2HPβCD is 80% (w/w), whereas it is only 1.85% (w/w) for β-CD. Solubility increases for both species upon complexation with DTAB; while the increase is minute for 2HPβCD, it is dramatic for β-CD. Both systems displayed an isotropic liquid solution (L(1)) one-phase region, the extension of which differs extensively between the two systems. Additionally, the DTAB:2HPβCD:water system also comprised a normal hexagonal (H(1)) area, which was not found for the DTAB:β-CD:water system. In the DTAB:β-CD:water system, on the other hand, we found cocrystallization of DTAB and β-CD. From this work we conclude that DTAB and CD molecules form 1:1 inclusion complexes with high affinities. Moreover, we observed indications of an association of 2HPβCD to DTAB micelles in the isotropic solution phase, which was not the case for β-CD and DTAB micelles. This is, to our knowledge, the first complete phase diagrams of surfactant-CD mixtures; as a novel feature it includes the observation of cocrystallization at high concentrations.
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Affiliation(s)
- Jonas Carlstedt
- Physical Chemistry, Center of Chemistry and Chemical Engineering, Lund University, POB 124, 221 00 Lund, Sweden.
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Ibrahim WAW, Wahib SMA, Hermawan D, Sanagi MM, Aboul-Enein HY. Chiral separation of vinpocetine using cyclodextrin-modified micellar electrokinetic chromatography. Chirality 2012; 24:252-4. [DOI: 10.1002/chir.21990] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2011] [Accepted: 11/15/2011] [Indexed: 11/09/2022]
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Carlstedt J, Bilalov A, Olsson U. Aqueous phase behavior of polyelectrolytes with amphiphilic counterions modulated by cyclodextrin: the role of polyion flexibility. Phys Chem Chem Phys 2012; 14:9574-7. [DOI: 10.1039/c2cp41353a] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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21
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Brocos P, Banquy X, Díaz-Vergara N, Pérez-Casas S, Piñeiro Á, Costas M. A Critical Approach to the Thermodynamic Characterization of Inclusion Complexes: Multiple-Temperature Isothermal Titration Calorimetric Studies of Native Cyclodextrins with Sodium Dodecyl Sulfate. J Phys Chem B 2011; 115:14381-96. [DOI: 10.1021/jp208740b] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Pilar Brocos
- Departamento de Física Aplicada, Facultad de Física, Universidad de Santiago de Compostela, Campus Vida, E-15782 Santiago de Compostela, Spain
| | - Xavier Banquy
- Laboratorio de Biofisicoquímica, Departamento de Fisicoquímica, Facultad de Química, Universidad Nacional Autónoma de México, Cd. Universitaria, México D.F. 04510, Mexico
| | - Norma Díaz-Vergara
- Laboratorio de Biofisicoquímica, Departamento de Fisicoquímica, Facultad de Química, Universidad Nacional Autónoma de México, Cd. Universitaria, México D.F. 04510, Mexico
| | - Silvia Pérez-Casas
- Laboratorio de Biofisicoquímica, Departamento de Fisicoquímica, Facultad de Química, Universidad Nacional Autónoma de México, Cd. Universitaria, México D.F. 04510, Mexico
| | - Ángel Piñeiro
- Departamento de Física Aplicada, Facultad de Física, Universidad de Santiago de Compostela, Campus Vida, E-15782 Santiago de Compostela, Spain
- Laboratorio de Biofisicoquímica, Departamento de Fisicoquímica, Facultad de Química, Universidad Nacional Autónoma de México, Cd. Universitaria, México D.F. 04510, Mexico
| | - Miguel Costas
- Laboratorio de Biofisicoquímica, Departamento de Fisicoquímica, Facultad de Química, Universidad Nacional Autónoma de México, Cd. Universitaria, México D.F. 04510, Mexico
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Melani F, Giannini I, Pasquini B, Orlandini S, Pinzauti S, Furlanetto S. Evaluation of the separation mechanism of electrokinetic chromatography with a microemulsion and cyclodextrins using NMR and molecular modeling. Electrophoresis 2011; 32:3062-9. [DOI: 10.1002/elps.201100263] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2011] [Revised: 05/09/2011] [Accepted: 06/14/2011] [Indexed: 11/08/2022]
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23
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Gotti R. Capillary electrophoresis of phytochemical substances in herbal drugs and medicinal plants. J Pharm Biomed Anal 2011; 55:775-801. [DOI: 10.1016/j.jpba.2010.11.041] [Citation(s) in RCA: 68] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2010] [Revised: 11/22/2010] [Accepted: 11/26/2010] [Indexed: 11/29/2022]
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24
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Electrophoretic separation of acidic and basic proteins in the presence of micromolar concentrations of an ionic liquid. Mikrochim Acta 2011. [DOI: 10.1007/s00604-011-0599-y] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
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