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Zhao L, Qiao Y, Wu J, Zhu J, Zuo X, Guo X, Peng X, Li F, Zhao L, Wang Z, Wang X, Pu Q. Deciphering the Dynamic Assembling-Disassembling of Small Molecules on Solid/Liquid Interfaces within Microchannels by Pulsed Streaming Potential Measurement. Anal Chem 2024; 96:10256-10263. [PMID: 38865612 DOI: 10.1021/acs.analchem.4c00954] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/14/2024]
Abstract
Assembling small molecules at liquid/solid interfaces is relatively common and contributes to many unique properties of the interface. However, such an assembling process can be dynamic depending on the concentration of the molecule and the properties of the solid and liquid themselves, which poses serious challenges on the accurate evaluation of the assembling processes. Herein, we report a convenient way for in situ and real-time monitoring of assembling-disassembling of small-molecule surfactants on the surface of microchannels using pulsed streaming potential (SP) measurement based on the variation of surface charge. With this technique, five distinctive kinetic regimes, each responsible for a characteristic molecular behavior, can be differentiated during a typical assembling-disassembling cycle. Significant difference of the assembling-disassembling process was clearly reflected for surfactants with hydrophobic tails of only a two -CH2- difference (C16TAB/C18TAB and D10DAB/D12DAB). The relative SP (Er) value is positively correlated with the molecular weight at a concentration of 0.1 mM for the same kinds of surfactants. Moreover, the assembling kinetics of D10DAB exhibits an "overshoot effect" at high concentration, which means morphology adjustment. The consequences of such assembling/disassembling of these molecules for electrophoretic separation, protein immobilization, and photocatalysis in a microchannel were investigated through dynamic characterization, which proves its potential as a tool for dynamic solid/liquid interface characterization.
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Affiliation(s)
- Lei Zhao
- State Key Laboratory of Applied Organic Chemistry, Key Laboratory of Nonferrous Metals Chemistry and Resources Utilization of Gansu Province, Department of Chemistry, Lanzhou University, Lanzhou, Gansu 730000, P. R. China
- Key Laboratory of Biotechnology and Bioengineering of State Ethnic Affairs Commission, Biomedical Research Center; Engineering Research Center of Key Technology and Industrialization of Cell-based Vaccine, Ministry of Education; Gan-su Tech Innovation Center of Animal; China-Malaysia National Joint Laboratory, Northwest Minzu University, Lanzhou 730030, P. R. China
| | - Yuting Qiao
- School of Life Sciences, Lanzhou University, Lanzhou, Gansu 730000, P. R. China
| | - Jing Wu
- State Key Laboratory of Applied Organic Chemistry, Key Laboratory of Nonferrous Metals Chemistry and Resources Utilization of Gansu Province, Department of Chemistry, Lanzhou University, Lanzhou, Gansu 730000, P. R. China
| | - Jiarui Zhu
- The Second Hospital of Lanzhou University, Lanzhou, Gansu 730030, P. R. China
| | - Xianwei Zuo
- Key Laboratory of Sensor and Sensing Technology of Gansu Province, Institute of Sensing Technology, Gansu Academy of Sciences, Lanzhou, Gansu 730000, P. R. China
| | - Xinxin Guo
- State Key Laboratory of Applied Organic Chemistry, Key Laboratory of Nonferrous Metals Chemistry and Resources Utilization of Gansu Province, Department of Chemistry, Lanzhou University, Lanzhou, Gansu 730000, P. R. China
| | - Xianglu Peng
- State Key Laboratory of Herbage Improvement and Grassland Agro-ecosystems, College of Pastoral Agriculture Science and Technology, Lanzhou University, Lanzhou, Gansu 730000, P. R. China
| | - Fengyun Li
- State Key Laboratory of Applied Organic Chemistry, Key Laboratory of Nonferrous Metals Chemistry and Resources Utilization of Gansu Province, Department of Chemistry, Lanzhou University, Lanzhou, Gansu 730000, P. R. China
| | - Lizhi Zhao
- Shanxi Institute of Energy, Jinzhong, Shanxi 030600, P. R. China
| | - Zifan Wang
- Key Laboratory of Biotechnology and Bioengineering of State Ethnic Affairs Commission, Biomedical Research Center; Engineering Research Center of Key Technology and Industrialization of Cell-based Vaccine, Ministry of Education; Gan-su Tech Innovation Center of Animal; China-Malaysia National Joint Laboratory, Northwest Minzu University, Lanzhou 730030, P. R. China
| | - Xiayan Wang
- Beijing Key Laboratory for Green Catalysis and Separation, Department of Chemistry and Chemical Engineering, Beijing University of Technology, Beijing 100124, P. R. China
| | - Qiaosheng Pu
- State Key Laboratory of Applied Organic Chemistry, Key Laboratory of Nonferrous Metals Chemistry and Resources Utilization of Gansu Province, Department of Chemistry, Lanzhou University, Lanzhou, Gansu 730000, P. R. China
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Long W, You M, Li J, Wang Y, Wang D, Tao X, Rao L, Xia Z, Fu Q. Sulfonic Functionalized Polydopamine Coatings with pH-Independent Surface Charge for Optimizing Capillary Electrophoretic Separations. Molecules 2024; 29:1600. [PMID: 38611879 PMCID: PMC11013714 DOI: 10.3390/molecules29071600] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2024] [Revised: 03/30/2024] [Accepted: 03/31/2024] [Indexed: 04/14/2024] Open
Abstract
Enhancing the pH-independence and controlling the magnitude of electroosmotic flow (EOF) are critical for highly efficient and reproducible capillary electrophoresis (CE) separations. Herein, we present a novel capillary modification method utilizing sulfonated periodate-induced polydopamine (SPD) coating to achieve pH-independent and highly reproducible cathodic EOF in CE. The SPD-coated capillaries were obtained through post-sulfonation treatment of periodate-induced PDA (PDA-SP) coatings adhered on the capillary inner surface. The successful immobilization of the SPD coating and the substantial grafting of sulfonic acid groups were confirmed by a series of characterization techniques. The excellent capability of PDA-SP@capillary in masking silanol groups and maintaining a highly robust EOF mobility was verified. Additionally, the parameters of sulfonation affecting the EOF mobilities were thoroughly examined. The obtained optimum SPD-coated column offered the anticipated highly pH-independent and high-strength cathodic EOF, which is essential for enhancing the CE separation performance and improving analysis efficiency. Consequently, the developed SPD-coated capillaries enabled successful high-efficiency separation of aromatic acids and nucleosides and rapid cyclodextrin-based chiral analysis of racemic drugs. Moreover, the SPD-coated columns exhibited a long lifetime and demonstrated good intra-day, inter-day, and column-to-column repeatability.
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Affiliation(s)
- Wenwen Long
- School of Pharmacy, Southwest Medical University, Luzhou 646000, China
| | - Mingyue You
- School of Pharmacy, Southwest Medical University, Luzhou 646000, China
| | - Jieli Li
- School of Pharmacy, Southwest Medical University, Luzhou 646000, China
| | - Yan Wang
- School of Pharmacy, Southwest Medical University, Luzhou 646000, China
| | - Dan Wang
- School of Pharmacy, Southwest Medical University, Luzhou 646000, China
| | - Xueping Tao
- School of Pharmacy, Southwest Medical University, Luzhou 646000, China
| | - Li Rao
- Chongqing Key Laboratory of High Active Traditional Chinese Drug Delivery System, Chongqing Medical and Pharmaceutical College, Chongqing 401331, China
| | - Zhining Xia
- School of Pharmaceutical Sciences, Chongqing University, Chongqing 401331, China
| | - Qifeng Fu
- School of Pharmacy, Southwest Medical University, Luzhou 646000, China
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Recent applications and chiral separation developments based on stationary phases in open tubular capillary electrochromatography (2019–2022). J Pharm Anal 2023; 13:323-339. [PMID: 37181297 PMCID: PMC10173184 DOI: 10.1016/j.jpha.2023.01.003] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2022] [Revised: 01/16/2023] [Accepted: 01/31/2023] [Indexed: 02/08/2023] Open
Abstract
Capillary electrochromatography (CEC) plays a significant role in chiral separation via the double separation principle, partition coefficient difference between the two phases, and electroosmotic flow-driven separation. Given the distinct properties of the inner wall stationary phase (SP), the separation ability of each SP differs from one another. Particularly, it provides large room for promising applications of open tubular capillary electrochromatography (OT-CEC). We divided the OT-CEC SPs developed over the past four years into six types: ionic liquids, nanoparticle materials, microporous materials, biomaterials, non-nanopolymers, and others, to mainly introduce their characteristics in chiral drug separation. There also added a few classic SPs that occurred within ten years as supplements to enrich the features of each SP. Additionally, we discuss their applications in metabolomics, food, cosmetics, environment, and biology as analytes in addition to chiral drugs. OT-CEC plays an increasingly significant role in chiral separation and may promote the development of capillary electrophoresis (CE) combined with other instruments in recent years, such as CE with mass spectrometry (CE/MS) and CE with ultraviolet light detector (CE/UV).
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Application of MOF materials as drug delivery systems for cancer therapy and dermal treatment. Coord Chem Rev 2022. [DOI: 10.1016/j.ccr.2021.214262] [Citation(s) in RCA: 52] [Impact Index Per Article: 26.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
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Waqas M, Keirouz A, Sanira Putri MK, Fazal F, Diaz Sanchez FJ, Ray D, Koutsos V, Radacsi N. Design and development of a nozzle-free electrospinning device for the high-throughput production of biomaterial nanofibers. Med Eng Phys 2021; 92:80-87. [PMID: 34167715 DOI: 10.1016/j.medengphy.2021.04.007] [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: 10/26/2020] [Revised: 04/10/2021] [Accepted: 04/29/2021] [Indexed: 12/13/2022]
Abstract
This technical note provides a step-by-step guide for the design and construction of a temperature-controlled nozzle-free electrospinning device. The equipment uses a rotating mandrel partially immersed within a polymer solution to produce fibers in an upward motion by inducing the formation of multiple Taylor cones and subsequently multi-jetting out of an electrified open surface. Free-surface electrospinning can overcome limitations and drawbacks associated with single and multi-nozzle spinneret configurations, such as low yield, limited production capacity, nonuniform electric field distribution, and clogging. Most importantly, this lab-scaled high-throughput device can provide an alternative economical route for needleless electrospinning research, in contrast to the high costs associated with industrially available upscaling equipment. Among the device's technical specifications, a key feature is a cryo-collector mandrel, capable of collecting fibers in sub-zero temperatures, which can induce ultra-porous nanostructures, wider pores, and subsequent in-depth penetration of cells. A multi-channel gas chamber allows the conditioning of the atmosphere, temperature, and airflow, while the chamber's design averts user exposure to the high-voltage components. All the Computer-Aided Design (CAD) files and point-by-point assembly instructions, along with a list of the materials used, are provided.
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Affiliation(s)
- Muhammad Waqas
- School of Engineering, Institute for Materials and Processes, The University of Edinburgh, Robert Stevenson Road, Edinburgh, EH9 3FB, United Kingdom
| | - Antonios Keirouz
- School of Engineering, Institute for Materials and Processes, The University of Edinburgh, Robert Stevenson Road, Edinburgh, EH9 3FB, United Kingdom
| | - Maria Kana Sanira Putri
- School of Engineering, Institute for Materials and Processes, The University of Edinburgh, Robert Stevenson Road, Edinburgh, EH9 3FB, United Kingdom
| | - Faraz Fazal
- School of Engineering, Institute for Materials and Processes, The University of Edinburgh, Robert Stevenson Road, Edinburgh, EH9 3FB, United Kingdom.; Department of Mechanical Engineering, University of Engineering and Technology, Lahore, (city campus) Pakistan
| | - Francisco Javier Diaz Sanchez
- School of Engineering, Institute for Materials and Processes, The University of Edinburgh, Robert Stevenson Road, Edinburgh, EH9 3FB, United Kingdom
| | - Dipa Ray
- School of Engineering, Institute for Materials and Processes, The University of Edinburgh, Robert Stevenson Road, Edinburgh, EH9 3FB, United Kingdom
| | - Vasileios Koutsos
- School of Engineering, Institute for Materials and Processes, The University of Edinburgh, Robert Stevenson Road, Edinburgh, EH9 3FB, United Kingdom
| | - Norbert Radacsi
- School of Engineering, Institute for Materials and Processes, The University of Edinburgh, Robert Stevenson Road, Edinburgh, EH9 3FB, United Kingdom..
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Wang B, Liu B, Yan Y. Facile Preparation of ZIF-8 MOF Coated Mesoporous Magnetic Nanoarticles to Provide a Magnetic Solid Phase Extraction Platform. JOURNAL OF ANALYTICAL CHEMISTRY 2021. [DOI: 10.1134/s1061934821040110] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
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7
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Preparation and applications of cellulose-functionalized chiral stationary phases: A review. Talanta 2021; 225:121987. [DOI: 10.1016/j.talanta.2020.121987] [Citation(s) in RCA: 23] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2020] [Revised: 11/28/2020] [Accepted: 12/05/2020] [Indexed: 12/12/2022]
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Surface area expansion by flower-like nanoscale layered double hydroxides for high efficient stir bar sorptive extraction. Anal Chim Acta 2020; 1116:45-52. [PMID: 32389188 DOI: 10.1016/j.aca.2020.04.034] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2020] [Revised: 04/09/2020] [Accepted: 04/14/2020] [Indexed: 02/07/2023]
Abstract
Enhancing the surface area of stationary phase is essential in chromatographic science. In this work, nanoscale NiAl-layered double hydroxides (NiAl-LDHs) with flower-like structure was used as a platform for supporting the stationary phase. Then strong hydrophobic p-naphtholbenzein molecule was immobilized onto the LDHs layer as sorbent for stir bar sorptive extraction (SBSE). The flower-like LDHs layer significantly increased the extraction efficiency through increasing the specific surface area and immobilized amounts of stationary phase. In addition, the LDHs can also provide anion exchange ability, which expanded the application of this stir bar for analysis of not only hydrophobic but also anionic analytes. For improving the workability, a poly(ether ether ketone) (PEEK) jacket stir bar with detachable dumbbell-shaped structure was employed. The PEEK jacket with high mechanical strength and dumbbell-shaped structure improved the durability of stir bar and the detectable design allowed elution to be realized with less solvent that enhanced the enrichment factor. The proposed stir bar showed good performance for the extraction of multiple analytes including flavonoids, non-steroid anti-inflammatory drugs and chlorophenoxy acids. By coupling with high performance liquid chromatography-ultraviolet detection (HPLC-UV), the SBSE-HPLC-UV method was applied for the extraction of three active components including bavachin, isobavachalcone and bavachinin in Psoralea corylifolia L. herb with low limit detection of 0.01-0.02 ng/mL.
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Zhou W, Sun W, Liu Y, Mao Z, Chen Z. Ionic liquid-copolymerized monolith based porous layer open tubular column for CEC-MS analysis. Talanta 2020; 209:120556. [DOI: 10.1016/j.talanta.2019.120556] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2019] [Revised: 10/26/2019] [Accepted: 11/09/2019] [Indexed: 01/07/2023]
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10
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Wang C, Zhou W, Liao X, Li W, Chen Z. Covalent immobilization of ionic liquid-based porous polymer onto poly(ether ether ketone) for stir bar sorptive extraction and its application in analysis of chlorophenoxy acid herbicides in soil. Talanta 2020; 208:120442. [DOI: 10.1016/j.talanta.2019.120442] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2019] [Revised: 09/14/2019] [Accepted: 10/03/2019] [Indexed: 02/06/2023]
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11
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Yu F, Xiao L, Liu Y. Different role of graphene for nonisothermal crystallization behavior of graphene filled poly(ether ether ketone) by different perparation methods. POLYMER CRYSTALLIZATION 2020. [DOI: 10.1002/pcr2.10103] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Fei Yu
- College of Chemistry Engineering, Jilin Province Key Laboratory of Carbon Fiber Development and ApplicationChangchun University of Technology Changchun China
| | - Linghan Xiao
- College of Chemistry Engineering, Jilin Province Key Laboratory of Carbon Fiber Development and ApplicationChangchun University of Technology Changchun China
| | - Yu Liu
- College of Chemistry Engineering, Jilin Province Key Laboratory of Carbon Fiber Development and ApplicationChangchun University of Technology Changchun China
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Hu LF, Yin SJ, Zhang H, Yang FQ. Recent developments of monolithic and open-tubular capillary electrochromatography (2017-2019). J Sep Sci 2020; 43:1942-1966. [PMID: 31909566 DOI: 10.1002/jssc.201901168] [Citation(s) in RCA: 30] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2019] [Revised: 12/26/2019] [Accepted: 12/28/2019] [Indexed: 12/21/2022]
Abstract
Capillary electrochromatography, which combined the high selectivity of high-performance liquid chromatography and the high separation efficiency of capillary electrophoresis, is an attractive separation tool. In this review, the developments on monolithic and open tubular capillary electrochromatography during 2017 to August 2019 are summarized. Considering the development of novel stationary phases is the most active research field in capillary electrochromatography, monolithic capillary electrochromatography is classified according to the polymer-based and hybrid monolithic columns, while open-tubular capillary electrochromatography is categorized by cyclodextrin, silica, polymer, nanomaterials, microporous materials, and biomaterials-based open tubular columns.
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Affiliation(s)
- Lin-Feng Hu
- Chongqing Key Laboratory of Medicinal Resources in the Three Gorges Reservoir Region, School of Biological and Chemical Engineering, Chongqing University of Education, Chongqing, P.R. China
| | - Shi-Jun Yin
- School of Chemistry and Chemical Engineering, Chongqing University, Chongqing, P.R. China
| | - Hao Zhang
- School of Chemistry and Chemical Engineering, Chongqing University, Chongqing, P.R. China
| | - Feng-Qing Yang
- School of Chemistry and Chemical Engineering, Chongqing University, Chongqing, P.R. China
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Duan R, Sun L, Yang HY, Ma YR, Deng XY, Peng C, Zheng C, Dong LY, Wang XH. Preparation of phenyl–boronic acid polymeric monolith by initiator-free ring-opening polymerization for microextraction of sulfonamides prior to their determination by ultra-performance liquid chromatography–tandem mass spectrometry. J Chromatogr A 2020; 1609:460510. [DOI: 10.1016/j.chroma.2019.460510] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2019] [Revised: 08/26/2019] [Accepted: 09/02/2019] [Indexed: 01/06/2023]
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Wang QY, Dong X, Yang J, Zhen XT, Ye LH, Chu C, Wang B, Hu YH, Zheng H, Cao J. Solid acids assisted matrix solid-phase dispersion microextraction of alkaloids by capillary electrophoresis coupled with quadrupole time-of-flight mass spectrometry. J Sep Sci 2019; 42:3579-3588. [PMID: 31617304 DOI: 10.1002/jssc.201900647] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2019] [Revised: 09/28/2019] [Accepted: 10/01/2019] [Indexed: 12/13/2022]
Abstract
The quantification of three alkaloids is important because quantitative study is a means of assessing the reliability of the experimental method, and three alkaloids of peimine, peiminine, and peimisine are main active ingredients in Chinese Pharmacopoeia 2015. An effective method based on the matrix solid-phase dispersion microextraction was developed for the extraction of alkaloid compounds in Fritillariae Thunbergii Bulbus. Target analytes were analyzed by capillary electrophoresis coupled with quadrupole time-of-flight mass spectrometry. The optimized experimental condition was that 50 mg Fritillariae Thunbergii Bulbus was blended homogeneously with 10 mg citric acid for 5 min. Two hundred microliters of water acidized by 1 mol/L hydrochloric acid (pH = 4.5) was selected to elute tested alkaloids. The results demonstrated that the investigated method had low limits of detection (1.32-1.59 ng/mL), good recoveries (86.63-98.12%), and reproducibility (relative standard deviations of peak areas < 0.87%). The proposed matrix solid-phase dispersion microextraction coupled with capillary electrophoresis combined with quadrupole time-of-flight mass spectrometry was successfully applied for the extraction of alkaloids in plants.
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Affiliation(s)
- Qiu-Yan Wang
- College of Material Chemistry and Chemical Engineering, Hangzhou Normal University, Hangzhou, P. R. China
| | - Xin Dong
- College of Material Chemistry and Chemical Engineering, Hangzhou Normal University, Hangzhou, P. R. China
| | - Juan Yang
- College of Material Chemistry and Chemical Engineering, Hangzhou Normal University, Hangzhou, P. R. China
| | - Xiao-Ting Zhen
- College of Material Chemistry and Chemical Engineering, Hangzhou Normal University, Hangzhou, P. R. China
| | - Li-Hong Ye
- Department of Traditional Chinese Medicine, Hangzhou Red Cross Hospital, Hangzhou, China
| | - Chu Chu
- College of Pharmaceutical Science, Zhejiang University of Technology, Hangzhou, China
| | - Bin Wang
- Lianyungang Hospital of Traditional Chinese Medicine, Lianyungang, Jiangsu, P. R. China
| | - Yu-Han Hu
- College of Material Chemistry and Chemical Engineering, Hangzhou Normal University, Hangzhou, P. R. China
| | - Hui Zheng
- College of Material Chemistry and Chemical Engineering, Hangzhou Normal University, Hangzhou, P. R. China
| | - Jun Cao
- College of Material Chemistry and Chemical Engineering, Hangzhou Normal University, Hangzhou, P. R. China
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Liu Y, Zhou W, Mao Z, Chen Z. Analysis of Evodiae Fructus by capillary electrochromatography-mass spectrometry with methyl-vinylimidazole functionalized organic polymer monolilth as stationary phases. J Chromatogr A 2019; 1602:474-480. [PMID: 31202495 DOI: 10.1016/j.chroma.2019.06.011] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2019] [Revised: 05/24/2019] [Accepted: 06/04/2019] [Indexed: 12/20/2022]
Abstract
Evodiae Fructus is used as a traditional Chinese medicine for the treatment of several kinds of diseases with its bioactive constituents. In this study, a capillary electrochromatography-mass spectrometry (CEC-MS) method was developed to determine three bioactive compounds including evodiamine, rutaecarpine and limonin in Evodiae Fructus fruit. Home-developed monolithic columns with methyl-vinylimidazole functionalized organic polymer monolilth as stationary phases were used in CEC-MS with excellent separation selectivity and high efficiency. The CEC-MS methods provided 4-16 folds improvement of LODs when compared with CEC-UV method. The conditions, which could affect separation efficiency and detection sensitivity, were optimized. Under optimum conditions, baseline separation with high detection sensitivity was obtained. The method showed good linearity (R2 >0.99) of 0.8-160 μg mL-1 with low limits of detection of 0.15-0.31 μg mL-1. Relative standard deviations of migration time and relative peak areas were <13.89%. Recoveries of evodiamine, rutaecarpine and limonin in Evodiae Fructus fruit were tested and calculated, which ranged from 102% to 113%. Finally, the three bioactive compounds in Evodiae Fructus herb samples from different regions were analyzed and studied. It has been demonstrated that the developed method has great potential for quality control of Evodiae Fructus herb.
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Affiliation(s)
- Yikun Liu
- Key Laboratory of Combinatorial Biosynthesis and Drug Discovery, Ministry of Education, and Wuhan University School of Pharmaceutical Sciences, Wuhan, 430071, China; State Key Laboratory of Transducer Technology, Chinese Academy of Sciences, Beijing 10080, China
| | - Wei Zhou
- Key Laboratory of Combinatorial Biosynthesis and Drug Discovery, Ministry of Education, and Wuhan University School of Pharmaceutical Sciences, Wuhan, 430071, China
| | - Zhenkun Mao
- Key Laboratory of Combinatorial Biosynthesis and Drug Discovery, Ministry of Education, and Wuhan University School of Pharmaceutical Sciences, Wuhan, 430071, China
| | - Zilin Chen
- Key Laboratory of Combinatorial Biosynthesis and Drug Discovery, Ministry of Education, and Wuhan University School of Pharmaceutical Sciences, Wuhan, 430071, China; State Key Laboratory of Transducer Technology, Chinese Academy of Sciences, Beijing 10080, China.
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Zhang H, Zhou DD, Yang FQ, Qian ZM, Li CH, Li WJ, Wang SP, Wang YT. Modulation of electroosmotic flow in capillary electrophoresis by plant polyphenol-inspired gallic acid/polyethyleneimine coatings: Analysis of small molecules. J Chromatogr B Analyt Technol Biomed Life Sci 2019; 1124:7-16. [PMID: 31176269 DOI: 10.1016/j.jchromb.2019.05.031] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2019] [Revised: 05/22/2019] [Accepted: 05/27/2019] [Indexed: 10/26/2022]
Abstract
Plant polyphenols can form functional coatings on various materials through self-polymerization. In this paper, a series of modified capillary columns, which possess diversity of charge characteristics for modulating electroosmotic flow (EOF), were prepared by one-step co-deposition of gallic acid (GA), a plant-derived polyphenol monomer, and branched polyethyleneimine (PEI). The physicochemical properties of the prepared columns were characterized by Fourier transform infrared spectroscopy (FT-IR), UV-Vis spectroscopy and scanning electron microscopy (SEM). The magnitude and direction of EOF of GA/PEI co-deposited columns were modulated by changing a series of coating parameters, such as post-incubation of FeCl3, co-deposition time, and deposited amounts of GA and PEI with different relative molecular mass (PEI-600, PEI-1800, PEI-10000, and PEI-70000). Furthermore, the separation efficiencies of the prepared GA/PEI co-deposited columns were evaluated by separations of small molecules, including organic acids, polar nucleotides, phenols, nucleic acid bases and nucleosides. Results indicated that modulating of EOF plays an important role in enhancing the separation performance and reversing the elution order of the analytes. Finally, the developed method was successfully applied to quantitative analysis of acidic compounds in four real samples. The recoveries were in the range of 73.5%-85.8% for citric acid, benzoic acid, sorbic acid, salicylic acid and ascorbic acid in beverage and fruit samples, 101.6%-104.9% for cinnamic acid, vanillic acid, and ferulic acid in Angelica sinensis sample, while 84.6%-97.8% for guanosine-5'-monophosphate, uridine-5'-monophosphate, cytosine-5'- monophosphate and adenosine-5'-monophosphate in Cordyceps samples. These results indicated that the co-deposition of plant polyphenol-inspired GA/PEI coatings can provide new opportunities for EOF modulation of capillary electrophoresis.
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Affiliation(s)
- Hao Zhang
- School of Chemistry and Chemical Engineering, Chongqing University, Chongqing 401331, China
| | - Dong-Dong Zhou
- School of Chemistry and Chemical Engineering, Chongqing University, Chongqing 401331, China
| | - Feng-Qing Yang
- School of Chemistry and Chemical Engineering, Chongqing University, Chongqing 401331, China.
| | - Zheng-Ming Qian
- Key Laboratory of State Administration of Traditional Chinese Medicine, Sunshine Lake Pharma Co., LTD, Dongguan, Guangdong 523850, China
| | - Chun-Hong Li
- Key Laboratory of State Administration of Traditional Chinese Medicine, Sunshine Lake Pharma Co., LTD, Dongguan, Guangdong 523850, China
| | - Wen-Jia Li
- Key Laboratory of State Administration of Traditional Chinese Medicine, Sunshine Lake Pharma Co., LTD, Dongguan, Guangdong 523850, China
| | - Sheng-Peng Wang
- State Key Laboratory of Quality Research in Chinese Medicine, Institute of Chinese Medical Sciences, University of Macau, Macao
| | - Yi-Tao Wang
- State Key Laboratory of Quality Research in Chinese Medicine, Institute of Chinese Medical Sciences, University of Macau, Macao.
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Zhou W, Liu Y, Liao X, Chen Z. Capillary electrophoresis-mass spectrometry using robust poly(ether ether ketone) capillary for tolerance to high content of organic solvents. J Chromatogr A 2019; 1593:156-163. [DOI: 10.1016/j.chroma.2019.01.070] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2018] [Revised: 01/23/2019] [Accepted: 01/25/2019] [Indexed: 11/30/2022]
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19
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Cui X, Xu S, Jin C, Ji Y. Recent advances in the preparation and application of mussel-inspired polydopamine-coated capillary tubes in microextraction and miniaturized chromatography systems. Anal Chim Acta 2018; 1033:35-48. [DOI: 10.1016/j.aca.2018.04.070] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2017] [Revised: 04/26/2018] [Accepted: 04/28/2018] [Indexed: 12/13/2022]
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20
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Zhang H, Yang FQ. Applications of polydopamine modifications in capillary electrophoretic analysis. J Sep Sci 2018; 42:342-359. [DOI: 10.1002/jssc.201800755] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2018] [Revised: 08/07/2018] [Accepted: 08/08/2018] [Indexed: 12/26/2022]
Affiliation(s)
- Hao Zhang
- School of Chemistry and Chemical Engineering; Chongqing University; Chongqing P. R. China
| | - Feng-Qing Yang
- School of Chemistry and Chemical Engineering; Chongqing University; Chongqing P. R. China
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Wang C, Zhou W, Liao X, Wang X, Chen Z. Covalent immobilization of metal organic frameworks onto chemical resistant poly(ether ether ketone) jacket for stir bar extraction. Anal Chim Acta 2018; 1025:124-133. [DOI: 10.1016/j.aca.2018.04.056] [Citation(s) in RCA: 27] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2018] [Revised: 04/21/2018] [Accepted: 04/24/2018] [Indexed: 12/12/2022]
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22
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In situ immobilization of layered double hydroxides onto cotton fiber for solid phase extraction of fluoroquinolone drugs. Talanta 2018; 186:545-553. [DOI: 10.1016/j.talanta.2018.04.100] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2018] [Revised: 04/23/2018] [Accepted: 04/29/2018] [Indexed: 11/15/2022]
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Zhou W, Wang C, Wang X, Chen Z. Etched poly(ether ether ketone) jacket stir bar with detachable dumbbell-shaped structure for stir bar sorptive extraction. J Chromatogr A 2018; 1553:43-50. [DOI: 10.1016/j.chroma.2018.04.022] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2018] [Revised: 04/05/2018] [Accepted: 04/10/2018] [Indexed: 12/13/2022]
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24
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Cheng M, Chen Z. Recent advances in screening of enzymes inhibitors based on capillary electrophoresis. J Pharm Anal 2018; 8:226-233. [PMID: 30140486 PMCID: PMC6104152 DOI: 10.1016/j.jpha.2018.05.002] [Citation(s) in RCA: 31] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2018] [Revised: 03/31/2018] [Accepted: 05/09/2018] [Indexed: 12/13/2022] Open
Abstract
Capillary electrophoresis with many advantages plays an important role in pharmaceutical analysis and drug screening. This review gives an overview on the recent advances in the developments and applications of capillary electrophoresis in the field of enzyme inhibitor screening. The period covers 2013 to 2017. Both the pre-capillary enzyme assays and in-capillary enzyme assays which include electrophoretically mediated microanalysis (EMMA) and immobilized enzyme microreactor (IMER) are summarized in this article.
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In situ immobilization of layered double hydroxides as stationary phase for capillary electrochromatography. J Chromatogr A 2017; 1530:219-225. [DOI: 10.1016/j.chroma.2017.11.021] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2017] [Revised: 11/05/2017] [Accepted: 11/12/2017] [Indexed: 11/19/2022]
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