51
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Koshel B, Birdsall R, Chen W. Two-dimensional liquid chromatography coupled to mass spectrometry for impurity analysis of dye-conjugated oligonucleotides. J Chromatogr B Analyt Technol Biomed Life Sci 2019; 1137:121906. [PMID: 31877427 DOI: 10.1016/j.jchromb.2019.121906] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2019] [Revised: 11/21/2019] [Accepted: 11/24/2019] [Indexed: 12/17/2022]
Abstract
Two-dimensional liquid chromatography coupled to mass spectrometry (2D-LC/MS) has been successfully implemented for several biopharmaceutical applications, but applications for oligonucleotide analysis have been relatively unexplored. When analyzing oligonucleotides in one-dimension, selecting an ion-pairing agent often requires a balance between acceptable chromatographic and mass spectrometric performance. When oligonucleotides are modified or conjugated to include extremely hydrophobic groups, such as fluorophores, the separation mechanism is further complicated by the impact the fluorophore has on retention. Triethylamine (TEA) buffered in hexafluoroisopropanol (HFIP) is the most commonly used ion-pairing agent for analyses requiring mass spectrometry, but the elution order of dye-conjugated failed sequences relative to the main peak is not length-based compared to what would be predicted for unconjugated oligonucleotides having the same sequence. Hexylammonium acetate (HAA) offers more efficient ion-pairing for a length-based separation, but MS response is compromised due to ion suppression. In this study, 2D-LC/MS is used to show that dye-conjugated oligonucleotide failed sequences can be resolved from the parent oligonucleotide using a strong ion-pairing agent in the first-dimension and further identified using a weaker but MS compatible ion-pairing agent in the second-dimension, results that are not achievable in a one-dimensional analysis. More specifically, a heart-cut configuration using ion-pair reversed-phase chromatography in both the first and second dimension (IP-RP - IP-RP) is used to transfer the n-1 impurity from a length-based separation in the first-dimension to a second-dimension analysis for identity confirmation using a single quadrupole detector. Identical C18 column chemistry is used in both the first and second dimension to exploit changes in selectivity that are due to mobile phase selection. The n-1 impurity from the two-dimensional analysis can be detected at low nanogram levels, comparable to results achieved in a one-dimensional dilution series, which approaches the limit of detection of the instrumentation. This work has future applicability to more complex impurity profiling using high-resolution instrumentation, where a more extensive set of impurities could not be evaluated using one-dimensional techniques.
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Affiliation(s)
- Brooke Koshel
- Waters Corporation, 34 Maple Street, Milford, MA 01757, United States.
| | - Robert Birdsall
- Waters Corporation, 34 Maple Street, Milford, MA 01757, United States.
| | - Weibin Chen
- Waters Corporation, 34 Maple Street, Milford, MA 01757, United States.
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52
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Zeng H, Xie X, Huang Y, Chen J, Liu Y, Zhang Y, Mai X, Deng J, Fan H, Zhang W. Enantioseparation and determination of triazole fungicides in vegetables and fruits by aqueous two-phase extraction coupled with online heart-cutting two-dimensional liquid chromatography. Food Chem 2019; 301:125265. [DOI: 10.1016/j.foodchem.2019.125265] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2019] [Revised: 07/23/2019] [Accepted: 07/26/2019] [Indexed: 12/31/2022]
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53
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Stoll DR, Lhotka HR, Harmes DC, Madigan B, Hsiao JJ, Staples GO. High resolution two-dimensional liquid chromatography coupled with mass spectrometry for robust and sensitive characterization of therapeutic antibodies at the peptide level. J Chromatogr B Analyt Technol Biomed Life Sci 2019; 1134-1135:121832. [DOI: 10.1016/j.jchromb.2019.121832] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2019] [Revised: 10/02/2019] [Accepted: 10/12/2019] [Indexed: 11/30/2022]
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54
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Lv W, Shi X, Wang S, Xu G. Multidimensional liquid chromatography-mass spectrometry for metabolomic and lipidomic analyses. Trends Analyt Chem 2019. [DOI: 10.1016/j.trac.2018.11.001] [Citation(s) in RCA: 30] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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55
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Bernardin M, Masle AL, Bessueille-Barbier F, Lienemann CP, Heinisch S. Comprehensive two-dimensional liquid chromatography with inductively coupled plasma mass spectrometry detection for the characterization of sulfur, vanadium and nickel compounds in petroleum products. J Chromatogr A 2019; 1611:460605. [PMID: 31662186 DOI: 10.1016/j.chroma.2019.460605] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2019] [Revised: 09/30/2019] [Accepted: 10/06/2019] [Indexed: 12/16/2022]
Abstract
The petroleum industry is increasingly concerned with the conversion of vacuum residues as a consequence of decreased conventional crude oil availability. The compositional analysis of heavy oil products has become a key step in conversion processes, but the complexity of these oil matrices tends to increase with their boiling point. In this study, comprehensive two-dimensional liquid chromatography (LCxLC) coupled to inductively coupled mass spectrometry (ICP-MS/MS) is considered with a view to meet new requirements and to bring additional information regarding the species present in these matrices. In search for a high degree of orthogonality, two separation techniques involving two different retention mechanisms were evaluated: Size Exclusion Chromatography (SEC) and Reverse Phase Liquid Chromatography (RPLC). In SEC, the analytes are separated according to their molecular weight while according to their hydrophobicity in RPLC. The separation power of both individual separation techniques was first evaluated. Off-line and on-line LCxLC were compared on the basis of an optimization approach. It is shown that off-line SECxRPLC can provide, for the same analysis time of 150 min, a higher peak capacity (2600 vs 1700) than on-line RPLCxSEC while a similar dilution factor (close to 30) but also requires far fewer fractions to be analyzed (12 vs 400). Asphaltenes which constitute the heaviest fraction of crude oils (obtained from petroleum industry) were analyzed by the developed off-line SECxRPLC method. The resulting 2D-contour plots show that co-elutions could be removed leading, for the first time, to new information on high molecular weight species containing sulfur and vanadium.
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Affiliation(s)
- Marie Bernardin
- Université de Lyon, Institut des Sciences Analytiques, UMR 5280, CNRS, 5 rue de la Doua, 69100 Villeurbanne, France; IFP Energies nouvelles, Rond-point de l'échangeur de Solaize, BP 3, 69360 Solaize France
| | - Agnès Le Masle
- IFP Energies nouvelles, Rond-point de l'échangeur de Solaize, BP 3, 69360 Solaize France
| | | | | | - Sabine Heinisch
- Université de Lyon, Institut des Sciences Analytiques, UMR 5280, CNRS, 5 rue de la Doua, 69100 Villeurbanne, France.
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56
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Rullich CC, Kiefer J. Chemometric analysis of enantioselective Raman spectroscopy data enables enantiomeric ratio determination. Analyst 2019; 144:5368-5372. [PMID: 31414107 DOI: 10.1039/c9an01205b] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
In-line determination of the enantiomeric ratio is still a challenge in process analytical technology (PAT). This study combines enantioselective Raman (esR) spectroscopy with partial least-squares regression (PLSR) to determine the enantiomeric fraction of the chiral molecule (5,6)-diphenyl-morpholin-2-one diluted in dimethyl sulfoxide (DMSO) as a proof-of-concept. Morpholinone derivates are potential candidates for pharmaceutical applications. The PLS weights were carefully analyzed in order to avoid misleading regression results, e.g. caused by sample impurities. A suitable PLSR model was found with two components and it was validated by a leave-one-out cross-validation. The enantiomeric fraction ef(+) could be calculated with deviations from the prepared ef(+) in the range of -0.031 and +0.052 from the esR spectra recorded at a half-wave retarder angle of 30.0°.
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Affiliation(s)
- Claudia C Rullich
- Technische Thermodynamik, Universität Bremen, Badgasteiner Str. 1, 28359 Bremen, Germany.
| | - Johannes Kiefer
- Technische Thermodynamik, Universität Bremen, Badgasteiner Str. 1, 28359 Bremen, Germany. and MAPEX Center for Materials and Processes, Universität Bremen, Bibliothekstr. 1, 28359 Bremen, Germany
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57
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Liu W, Shang X, Yao S, Wang F. A novel and nonderivatization method for the determination of valproic acid in human serum by two‐dimensional liquid chromatography. Biomed Chromatogr 2019; 34:e4695. [PMID: 31469425 DOI: 10.1002/bmc.4695] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2019] [Revised: 08/22/2019] [Accepted: 08/26/2019] [Indexed: 11/07/2022]
Affiliation(s)
- Wei Liu
- Department of PharmacyAffiliated Guangji Hospital of Soochow University Suzhou Jiangsu China
| | - Xiang Shang
- Department of PharmacyAffiliated Guangji Hospital of Soochow University Suzhou Jiangsu China
| | - Shuyong Yao
- Department of PharmacyAffiliated Guangji Hospital of Soochow University Suzhou Jiangsu China
| | - Feng Wang
- Department of Pharmacythe Second Xiangya Hospital of Central South University Changsha Hunan China
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58
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Liu X, Jiang W, Su M, Sun Y, Liu H, Nie L, Zang H. Quality evaluation of traditional Chinese medicines based on fingerprinting. J Sep Sci 2019; 43:6-17. [DOI: 10.1002/jssc.201900365] [Citation(s) in RCA: 31] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2019] [Revised: 07/03/2019] [Accepted: 07/05/2019] [Indexed: 12/12/2022]
Affiliation(s)
- Xiaoyan Liu
- School of Pharmaceutical SciencesShandong University Jinan P. R. China
| | - Wenwen Jiang
- School of Pharmaceutical SciencesShandong University Jinan P. R. China
| | - Mei Su
- School of Pharmaceutical SciencesShandong University Jinan P. R. China
| | - Yue Sun
- School of Pharmaceutical SciencesShandong University Jinan P. R. China
| | - Hongming Liu
- Zibo Institute for Food and Drug Control Zibo P. R. China
| | - Lei Nie
- School of Pharmaceutical SciencesShandong University Jinan P. R. China
| | - Hengchang Zang
- School of Pharmaceutical SciencesShandong University Jinan P. R. China
- National Glycoengineering Research Center Jinan P. R. China
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59
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A novel two-dimensional liquid chromatography system for the simultaneous determination of three monoterpene indole alkaloids in biological matrices. Anal Bioanal Chem 2019; 411:3857-3870. [PMID: 31073732 DOI: 10.1007/s00216-019-01859-2] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2019] [Revised: 04/10/2019] [Accepted: 04/18/2019] [Indexed: 01/02/2023]
Abstract
The present paper describes a novel two-dimensional liquid chromatography (2D-LC) system, which is comprised of a first-dimensional ion exchange chromatography (IEX1) column, trap column, and second-dimensional reversed-phase chromatography (RP2) column system. The biological sample is separated by the first-dimensional LC using an IEX column to remove interferences. The analytes are transferred to the trap column after heart-cutting. Then, the analytes are transferred to the second-dimensional LC using an RP2 column for further separation and ultraviolet detection. This 2D-LC system can offer a large injection volume to provide sufficient sensitivity and exhibits a strong capacity for removing interferences. Here, the determination of three monoterpene indole alkaloids (MIAs; gelsemine, koumine, and humantenmine) from Gelsemium in biological matrices (plasma, tissue, and urine) was used this 2D-LC system. After a rapid and easy sample preparation method based on protein precipitation, the sample was injected into the 2D-LC. The method was developed and validated in terms of the selectivity, LOD, LOQ, linearity, precision, accuracy, and stability. The sample preparation time for the three MIAs was 15 min. The LOD for these compounds was 10 ng/mL, which was lower than the developed HPLC methods. The results showed that this method had good quantitation performance and allowed the determination of gelsemine, koumine, and humantenmine in biological matrices. The method is rapid, exhibits high selectivity, has good sensitivity, and is low-cost, thus making it well-suited for application in the pharmaceutical and toxicological analysis of Gelsemium. Graphical abstract.
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Iguiniz M, Corbel E, Roques N, Heinisch S. Quantitative aspects in on-line comprehensive two-dimensional liquid chromatography for pharmaceutical applications. Talanta 2019; 195:272-280. [DOI: 10.1016/j.talanta.2018.11.030] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2018] [Revised: 11/07/2018] [Accepted: 11/09/2018] [Indexed: 02/03/2023]
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61
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Rullich CC, Kiefer J. Principal component analysis to enhance enantioselective Raman spectroscopy. Analyst 2019; 144:2080-2086. [PMID: 30734784 DOI: 10.1039/c8an01886c] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
Enantioselective Raman (esR) spectroscopy is an innovative technique with a high potential for online process monitoring in chiral media, e.g. in the pharmaceutical industry. A prerequisite for an effective application is to combine the experimental approach with suitable concepts for data analysis. In this work, we present a chemometric approach to analyze the esR spectra recorded in an automatized polarization-resolved Raman set-up. It is demonstrated that the proposed method is capable of distinguishing between the enantiomers of the chiral alcohol 4-methylpentan-2-ol in a fully unsupervised fashion. Furthermore, it is shown that the difficulty of facing only small intensity differences between the esR spectra of the enantiomers can be overcome by feeding difference spectra between the pure enantiomers and the racemate into the principal component analysis (PCA) algorithm. The enantiomers are clearly discriminable along the first principal component.
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Affiliation(s)
- Claudia C Rullich
- Technische Thermodynamik, Universität Bremen, Badgasteiner Str. 1, 28359 Bremen, Germany
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62
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Saadati-Moshtaghin HR. Immobilization of dihydrogen phosphate onto rice husk ash as a highly efficient and green catalyst for the synthesis of symmetrical N,N′-alkylidene bisamides. RESEARCH ON CHEMICAL INTERMEDIATES 2019. [DOI: 10.1007/s11164-019-03779-3] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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63
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Pirok BWJ, Stoll DR, Schoenmakers PJ. Recent Developments in Two-Dimensional Liquid Chromatography: Fundamental Improvements for Practical Applications. Anal Chem 2019; 91:240-263. [PMID: 30380827 PMCID: PMC6322149 DOI: 10.1021/acs.analchem.8b04841] [Citation(s) in RCA: 205] [Impact Index Per Article: 41.0] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Affiliation(s)
- Bob W. J. Pirok
- University
of Amsterdam, van ’t Hoff
Institute for Molecular Sciences, Analytical-Chemistry Group, Science Park 904, 1098 XH Amsterdam, The Netherlands
- TI-COAST, Science Park 904, 1098 XH Amsterdam, The Netherlands
| | - Dwight R. Stoll
- Department
of Chemistry, Gustavus Adolphus College, Saint Peter, Minnesota 56082, United States
| | - Peter J. Schoenmakers
- University
of Amsterdam, van ’t Hoff
Institute for Molecular Sciences, Analytical-Chemistry Group, Science Park 904, 1098 XH Amsterdam, The Netherlands
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64
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Iguiniz M, Corbel E, Roques N, Heinisch S. On-line coupling of achiral Reversed Phase Liquid Chromatography and chiral Supercritical Fluid Chromatography for the analysis of pharmaceutical compounds. J Pharm Biomed Anal 2018; 159:237-244. [DOI: 10.1016/j.jpba.2018.06.058] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2018] [Revised: 06/28/2018] [Accepted: 06/28/2018] [Indexed: 11/28/2022]
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65
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Ji S, Wang S, Xu H, Su Z, Tang D, Qiao X, Ye M. The application of on-line two-dimensional liquid chromatography (2DLC) in the chemical analysis of herbal medicines. J Pharm Biomed Anal 2018; 160:301-313. [PMID: 30114608 DOI: 10.1016/j.jpba.2018.08.014] [Citation(s) in RCA: 33] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2018] [Revised: 08/02/2018] [Accepted: 08/07/2018] [Indexed: 11/30/2022]
Abstract
Herbal medicines are complicated chemical systems containing hundreds of small molecules of various polarities, structural types, and contents. Thus far, the chromatographic separation of herbal extracts is still a big challenge. Two-dimensional liquid chromatography (2DLC) has become an attractive separation tool in the past few years. Particularly, a lot of attention has been paid to on-line 2DLC. In this review, we aim to give an overview on applications of on-line 2DLC in the chemical analysis of herbal medicines since 2010. Firstly, classification and general configurations of on-line 2DLC were briefly introduced. Then, we summarized main applications in herbal medicines of heart-cutting 2DLC (LC-LC), comprehensive 2DLC (LC × LC), and their combinations, with emphasis on LC × LC. Mass spectrometry is the most popular detector coupled with 2DLC, which allows sensitive and accurate structural characterization of herbal compounds. Finally, future developments in on-line 2DLC techniques were also discussed.
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Affiliation(s)
- Shuai Ji
- Department of Pharmaceutical Analysis, Xuzhou Medical University, 209 Tongshan Road, Xuzhou 221004, China; State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences, Peking University, 38 Xueyuan Road, Beijing 100191, China
| | - Shuang Wang
- State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences, Peking University, 38 Xueyuan Road, Beijing 100191, China
| | - Haishan Xu
- State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences, Peking University, 38 Xueyuan Road, Beijing 100191, China; Civil Aviation Medicine Center & Civil Aviation General Hospital, Civil Aviation Administration of China, A-1 Gaojing, Chaoyang District, Beijing 100123, China
| | - Zhenyu Su
- Department of Pharmaceutical Analysis, Xuzhou Medical University, 209 Tongshan Road, Xuzhou 221004, China
| | - Daoquan Tang
- Department of Pharmaceutical Analysis, Xuzhou Medical University, 209 Tongshan Road, Xuzhou 221004, China
| | - Xue Qiao
- State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences, Peking University, 38 Xueyuan Road, Beijing 100191, China.
| | - Min Ye
- State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences, Peking University, 38 Xueyuan Road, Beijing 100191, China.
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66
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Zhu MZ, Chen GL, Wu JL, Li N, Liu ZH, Guo MQ. Recent development in mass spectrometry and its hyphenated techniques for the analysis of medicinal plants. PHYTOCHEMICAL ANALYSIS : PCA 2018; 29:365-374. [PMID: 29687660 DOI: 10.1002/pca.2763] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/02/2018] [Revised: 02/10/2018] [Accepted: 02/12/2018] [Indexed: 05/24/2023]
Abstract
INTRODUCTION Medicinal plants are gaining increasing attention worldwide due to their empirical therapeutic efficacy and being a huge natural compound pool for new drug discovery and development. The efficacy, safety and quality of medicinal plants are the main concerns, which are highly dependent on the comprehensive analysis of chemical components in the medicinal plants. With the advances in mass spectrometry (MS) techniques, comprehensive analysis and fast identification of complex phytochemical components have become feasible, and may meet the needs, for the analysis of medicinal plants. OBJECTIVE Our aim is to provide an overview on the latest developments in MS and its hyphenated technique and their applications for the comprehensive analysis of medicinal plants. METHODOLOGY Application of various MS and its hyphenated techniques for the analysis of medicinal plants, including but not limited to one-dimensional chromatography, multiple-dimensional chromatography coupled to MS, ambient ionisation MS, and mass spectral database, have been reviewed and compared in this work. RESULTS Recent advancs in MS and its hyphenated techniques have made MS one of the most powerful tools for the analysis of complex extracts from medicinal plants due to its excellent separation and identification ability, high sensitivity and resolution, and wide detection dynamic range. CONCLUSION To achieve high-throughput or multi-dimensional analysis of medicinal plants, the state-of-the-art MS and its hyphenated techniques have played, and will continue to play a great role in being the major platform for their further research in order to obtain insight into both their empirical therapeutic efficacy and quality control.
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Affiliation(s)
- Ming-Zhi Zhu
- Key Laboratory of Tea Science of Ministry of Education, Hunan Agricultural University, Changsha, P. R. China
- Key Laboratory of Plant Germplasm Enhancement and Specialty Agriculture, Wuhan Botanical Garden, Chinese Academy of Sciences, Wuhan, P. R. China
- State Key Laboratory for Quality Research of Chinese Medicines, Macau University of Science and Technology, Taipa, Macau
| | - Gui-Lin Chen
- Key Laboratory of Plant Germplasm Enhancement and Specialty Agriculture, Wuhan Botanical Garden, Chinese Academy of Sciences, Wuhan, P. R. China
- The Sino-Africa Joint Research Centre, Chinese Academy of Sciences, Wuhan, P. R. China
| | - Jian-Lin Wu
- State Key Laboratory for Quality Research of Chinese Medicines, Macau University of Science and Technology, Taipa, Macau
| | - Na Li
- State Key Laboratory for Quality Research of Chinese Medicines, Macau University of Science and Technology, Taipa, Macau
| | - Zhong-Hua Liu
- Key Laboratory of Tea Science of Ministry of Education, Hunan Agricultural University, Changsha, P. R. China
| | - Ming-Quan Guo
- Key Laboratory of Plant Germplasm Enhancement and Specialty Agriculture, Wuhan Botanical Garden, Chinese Academy of Sciences, Wuhan, P. R. China
- The Sino-Africa Joint Research Centre, Chinese Academy of Sciences, Wuhan, P. R. China
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67
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Woiwode U, Reischl RJ, Buckenmaier S, Lindner W, Lämmerhofer M. Imaging Peptide and Protein Chirality via Amino Acid Analysis by Chiral × Chiral Two-Dimensional Correlation Liquid Chromatography. Anal Chem 2018; 90:7963-7971. [DOI: 10.1021/acs.analchem.8b00676] [Citation(s) in RCA: 27] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Ulrich Woiwode
- Institute of Pharmaceutical Sciences, Pharmaceutical (Bio-)Analysis, University of Tübingen, Auf der Morgenstelle 8, 72076 Tübingen, Germany
| | - Roland Johann Reischl
- University of Salzburg, Department of Biosciences, Bioanalytical Research Laboratories, Hellbrunnerstrasse 34, 5020 Salzburg, Austria
| | - Stephan Buckenmaier
- Agilent Technologies, Research and Development, Hewlett-Packard-Strasse 8, 76337 Waldbronn, Germany
| | - Wolfgang Lindner
- Lindner
Consulting
GmbH, Ziegelofengasse 37, 3400 Klosterneuburg, Austria
- Institute of Analytical Chemistry, University of Vienna, Waehringerstrasse 38, 1090 Vienna, Austria
| | - Michael Lämmerhofer
- Institute of Pharmaceutical Sciences, Pharmaceutical (Bio-)Analysis, University of Tübingen, Auf der Morgenstelle 8, 72076 Tübingen, Germany
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68
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Marlot L, Batteau M, Faure K. Comparison between centrifugal partition chromatography and preparative liquid chromatography as first dimensions in off-line two-dimensional separation: Application to the isolation of multi-targeted compounds from Edelweiss plant. Electrophoresis 2018; 39:2011-2019. [PMID: 29513903 DOI: 10.1002/elps.201800032] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2018] [Revised: 02/15/2018] [Accepted: 02/16/2018] [Indexed: 12/28/2022]
Abstract
Preparative two-dimensional chromatography is gaining interest in the elucidation of complex samples as it allows the recovery of a large number of molecules without the risks inherent to tedious multi-step sample preparation. While the second dimension is often selected to be liquid chromatography, it may be of interest to compare the specificities of two different techniques, namely liquid chromatography and centrifugal partition chromatography, to be used as first dimension. A fair comparison between off-line CPCxLC and prepLCxLC in selective comprehensive mode for preparative purposes is carried out in this study, illustrated by the isolation of five compounds from high-value Edelweiss plant. The method development of each configuration is achieved on laboratory scale instruments. The quality of separation is compared using 2D-contour plots. The prepLCxLC exhibits a large separation space that leads to an overall large peak capacity, which is of great interest for complex samples. But its limited loading capacity involves a large number of 2 D runs increasing the running costs for preparative purposes. On the other hand, CPCxLC provides a low peak capacity due to the poor efficiency provided by CPC. However, this liquid-liquid technique can be finely tuned to generate a high selectivity, decreasing the number of runs necessary to produce a limited number of target solutes.
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Affiliation(s)
- Léa Marlot
- Université de Lyon, CNRS, Université Claude Bernard Lyon 1, ENS de Lyon, Institut des Sciences Analytiques, Villeurbanne, France
| | - Magali Batteau
- Université de Lyon, CNRS, Université Claude Bernard Lyon 1, ENS de Lyon, Institut des Sciences Analytiques, Villeurbanne, France
| | - Karine Faure
- Université de Lyon, CNRS, Université Claude Bernard Lyon 1, ENS de Lyon, Institut des Sciences Analytiques, Villeurbanne, France
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69
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Pirok BWJ, Gargano AFG, Schoenmakers PJ. Optimizing separations in online comprehensive two-dimensional liquid chromatography. J Sep Sci 2017; 41:68-98. [PMID: 29027363 PMCID: PMC5814945 DOI: 10.1002/jssc.201700863] [Citation(s) in RCA: 148] [Impact Index Per Article: 21.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2017] [Revised: 09/21/2017] [Accepted: 09/21/2017] [Indexed: 12/16/2022]
Abstract
Online comprehensive two-dimensional liquid chromatography has become an attractive option for the analysis of complex nonvolatile samples found in various fields (e.g. environmental studies, food, life, and polymer sciences). Two-dimensional liquid chromatography complements the highly popular hyphenated systems that combine liquid chromatography with mass spectrometry. Two-dimensional liquid chromatography is also applied to the analysis of samples that are not compatible with mass spectrometry (e.g. high-molecular-weight polymers), providing important information on the distribution of the sample components along chemical dimensions (molecular weight, charge, lipophilicity, stereochemistry, etc.). Also, in comparison with conventional one-dimensional liquid chromatography, two-dimensional liquid chromatography provides a greater separation power (peak capacity). Because of the additional selectivity and higher peak capacity, the combination of two-dimensional liquid chromatography with mass spectrometry allows for simpler mixtures of compounds to be introduced in the ion source at any given time, improving quantitative analysis by reducing matrix effects. In this review, we summarize the rationale and principles of two-dimensional liquid chromatography experiments, describe advantages and disadvantages of combining different selectivities and discuss strategies to improve the quality of two-dimensional liquid chromatography separations.
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Affiliation(s)
- Bob W J Pirok
- University of Amsterdam, Analytical-Chemistry Group, van 't Hoff Institute for Molecular Sciences, Amsterdam, The Netherlands.,TI-COAST, Science Park, Amsterdam, The Netherlands
| | - Andrea F G Gargano
- University of Amsterdam, Analytical-Chemistry Group, van 't Hoff Institute for Molecular Sciences, Amsterdam, The Netherlands.,Vrije Universiteit Amsterdam, Department of Bioanalytical Chemistry, Amsterdam Institute for Molecules, Medicines and Systems, Amsterdam, The Netherlands
| | - Peter J Schoenmakers
- University of Amsterdam, Analytical-Chemistry Group, van 't Hoff Institute for Molecular Sciences, Amsterdam, The Netherlands
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