1
|
Liquid–Liquid Phase Equilibrium and Ion-Exchange Exploration for Aqueous Two-Phase Systems of ([C4mim]Cl + K2CO3 or K3C6H5O7 + water) at Different Temperatures. J SOLUTION CHEM 2022. [DOI: 10.1007/s10953-021-01137-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
|
2
|
Wang Y, Wang S, Liu L. Extraction of geniposidic acid and aucubin employing aqueous two-phase systems comprising ionic liquids and salts. Microchem J 2021. [DOI: 10.1016/j.microc.2021.106592] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
|
3
|
Mező E, Páger C, Makszin L, Kilár F. Capillary zone electrophoresis of proteins applying ionic liquids for dynamic coating and as background electrolyte component. Electrophoresis 2020; 41:2083-2091. [PMID: 33022798 DOI: 10.1002/elps.202000204] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2020] [Revised: 09/22/2020] [Accepted: 09/24/2020] [Indexed: 11/07/2022]
Abstract
The use of ionic liquids in capillary electrophoresis, either as coating material or as components of the background electrolyte needs systematic standardization to set up optimal conditions. Excellent separation of the proteins was achieved using 1-ethyl-3-methylimidazolium tetrafluoroborate ([emim][BF4 ]) or 1-butyl-3-methylimidazolium tetrafluoroborate ([bmim][BF4 ]) ionic liquids using the properly made ionic-liquid-water binary mixtures for the experiments. The binary mixture has a distinctly stable and well perceptible low pH, which depends on the concentration of the ionic liquid, and on the preparation time of the mixture. Optimal conditions for the electrophoretic separation were obtained upon a multivariate analysis of the experimental parameters (applied voltage, migration time, concentration, and type of the ionic liquid). The standardized condition provides a low electroendosmotic flow toward the anode, which, however, did not hinder the proteins to migrate toward the cathode. The migration of cytochrome c, lysozyme, myoglobin, trypsin, and apo-transferrin at a pH around 2, far below the isoelectric points of the proteins, showed RSD values of the migration times less than 7.5% and less than 6.5% when using [emim][BF4 ] or [bmim][BF4 ], respectively, either in run-to-run or day-to-day experiments. The determination of the extent of the EOF is not possible with the commonly used EOF markers, due to interaction with the ionic-liquid constituents. The interaction of the ionic liquids with the proteins influences the migration order in zone electrophoresis. This method has been applied successfully for the analyses of real biological samples such as proteins from egg whites and human tears.
Collapse
Affiliation(s)
- Emerencia Mező
- Institute of Bioanalysis, Medical School, and Szentágothai Research Center, University of Pécs, Pécs, Hungary
| | - Csilla Páger
- Institute of Bioanalysis, Medical School, and Szentágothai Research Center, University of Pécs, Pécs, Hungary
- Department of Analytical and Environmental Chemistry, Faculty of Sciences, University of Pécs, Pécs, Hungary
| | - Lilla Makszin
- Institute of Bioanalysis, Medical School, and Szentágothai Research Center, University of Pécs, Pécs, Hungary
| | - Ferenc Kilár
- Institute of Bioanalysis, Medical School, and Szentágothai Research Center, University of Pécs, Pécs, Hungary
- Department of Bioengineering, Sapientia Hungarian University of Transylvania, Miercurea Ciuc, Romania
| |
Collapse
|
4
|
Investigating the binding measurements of human α-acid glycoprotein with chlorambucil and dacarbazine in the presence of imidazolium based -ionic liquid by affinity capillary electrophoresis. ARAB J CHEM 2020. [DOI: 10.1016/j.arabjc.2020.08.020] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022] Open
|
5
|
Guo Y, Zhang B, Lu C, Liu X, Li Q, Zhang H, Wang Z. Locating the binding domains of lysozyme with ionic liquids in aqueous solution via spectroscopic studies. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2019; 214:239-245. [PMID: 30785043 DOI: 10.1016/j.saa.2019.02.032] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/05/2018] [Revised: 02/13/2019] [Accepted: 02/13/2019] [Indexed: 06/09/2023]
Abstract
The binding domains of lysozyme with ionic liquids (ILs, [C4mim]BF4, [C4mim]Cl, [C4mim]Br and [dmim]I) in aqueous solution was investigated by studying molecular interactions using spectroscopic techniques. Ultraviolet spectroscopy (UV) showed that the addition of ILs increased the absorption peak intensity of lysozyme at 210 nm by enhancing peptide bond valence electron transition. It is also found that a weak interaction between ILs and lysozyme chromophore groups was generated by analyzing the changes of absorption peak intensity near 280 nm. Fluorescence and Synchronous Fluorescence spectra results showed that four ILs had quenching effect on the fluorescent substances of lysozyme, and the quenching effect rose with increasing ILs concentration. Meanwhile, the interaction between lysozyme and ILs molecules is mainly based on Van der Waals force and two Tryptophan (Trp) residues (Trp62 or Trp108) at the active site of lysozyme molecules play a critical role in binding ILs to their own molecules.
Collapse
Affiliation(s)
- Yun Guo
- School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, PR China
| | - Bo Zhang
- School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, PR China
| | - Chao Lu
- School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, PR China
| | - Xiaoxue Liu
- School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, PR China
| | - Qing Li
- School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, PR China
| | - Hua Zhang
- Chongqing Institute for Food and Drug Control, Chongqing 401121, PR China.
| | - Zhanzhong Wang
- School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, PR China.
| |
Collapse
|
6
|
McQueen L, Lai D. Ionic Liquid Aqueous Two-Phase Systems From a Pharmaceutical Perspective. Front Chem 2019; 7:135. [PMID: 30931300 PMCID: PMC6428778 DOI: 10.3389/fchem.2019.00135] [Citation(s) in RCA: 36] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2018] [Accepted: 02/21/2019] [Indexed: 12/30/2022] Open
Abstract
Aqueous Two-Phase Systems (ATPSs) have been extensively studied for their ability to simultaneously separate and purify active pharmaceutical ingredients (APIs) and key intermediates with high yields and high purity. Depending on the ATPS composition, it can be adapted for the separation and purification of cells, nucleic acids, proteins, antibodies, and small molecules. This method has been shown to be scalable, allowing it to be used in the milliliter scale for early drug development to thousands of liters in manufacture for commercial supply. The benefits of ATPS in pharmaceutical separations is increasingly being recognized and investigated by larger pharmaceutical companies. ATPSs use identical instrumentation and similar methodology, therefore a change from traditional methods has a theoretical low barrier of adoption. The cost of typical components used to form an ATPS at large scale, particularly that of polymer-polymer systems, is the primary challenge to widespread use across industry. However, there are a few polymer-salt examples where the increase in yield at commercial scale justifies the cost of using ATPSs for macromolecule purification. More recently, Ionic Liquids (ILs) have been used for ATPS separations that is more sustainable as a solvent, and more economical than polymers often used in ATPSs for small molecule applications. Such IL-ATPSs still retain much of the attractive characteristics such as customizable chemical and physical properties, stability, safety, and most importantly, can provide higher yield separations of organic compounds, and efficient solvent recycling to lower financial and environmental costs of large scale manufacturing.
Collapse
Affiliation(s)
- Lisa McQueen
- Drug Product Design and Development, GlaxoSmithKline, Collegeville, PA, United States
| | - David Lai
- Product and Process Engineering, GlaxoSmithKline, Collegeville, PA, United States.,Advanced Manufacturing Technologies, GlaxoSmithKline, Collegeville, PA, United States
| |
Collapse
|
7
|
Yu F, Zhao Q, Zhang D, Yuan Z, Wang H. Affinity Interactions by Capillary Electrophoresis: Binding, Separation, and Detection. Anal Chem 2018; 91:372-387. [PMID: 30392351 DOI: 10.1021/acs.analchem.8b04741] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Affiliation(s)
- Fangzhi Yu
- State Key Laboratory of Environmental Chemistry and Ecotoxicology , Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences , Beijing , 100085 , China.,University of Chinese Academy of Sciences , Beijing , 100049 , China
| | - Qiang Zhao
- State Key Laboratory of Environmental Chemistry and Ecotoxicology , Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences , Beijing , 100085 , China.,University of Chinese Academy of Sciences , Beijing , 100049 , China
| | - Dapeng Zhang
- State Key Laboratory of Environmental Chemistry and Ecotoxicology , Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences , Beijing , 100085 , China
| | - Zheng Yuan
- State Key Laboratory of Environmental Chemistry and Ecotoxicology , Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences , Beijing , 100085 , China.,University of Chinese Academy of Sciences , Beijing , 100049 , China
| | - Hailin Wang
- State Key Laboratory of Environmental Chemistry and Ecotoxicology , Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences , Beijing , 100085 , China.,University of Chinese Academy of Sciences , Beijing , 100049 , China
| |
Collapse
|
8
|
|