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Mulia T, Ercan E, Mumtaz M, Lin YC, Borsali R, Chen WC. Carbohydrate-based block copolymers with sub-10 nm face-centered cubic nanostructures for low-power-consuming and ultraviolet light-triggered synaptic phototransistors. Carbohydr Polym 2024; 344:122476. [PMID: 39218535 DOI: 10.1016/j.carbpol.2024.122476] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2023] [Revised: 06/24/2024] [Accepted: 07/08/2024] [Indexed: 09/04/2024]
Abstract
Addressing environmental concerns and producing sustainable and environmentally friendly electronic devices with low power consumption poses a significant challenge. This study introduces phototransistor devices employing morphologically controlled block copolymers based on maltotriose, maltoheptaose, and β-cyclodextrin as polymer electrets. Ordered self-assembled morphologies can be achieved by utilizing microwave radiation for rapid annealing (within 5 s) with optimized annealing conditions. Herein, face-centered cubic (FCC), vertical, and mixed cylindrical nanostructures are reported. The resulting well-defined morphologies play a pivotal role in enhancing the electron-trapping capability of the block copolymers and facilitating charge carrier transport between the electret and semiconducting layers. Consequently, the phototransistor memory manifests exceptional performance, featuring stability and endurance. Intriguingly, the cavity of β-cyclodextrin provides a stable environment for the trapped charges, leading to a larger memory window than other block copolymers. On the other hand, a device consisting of MT-b-PS exhibited superior current contrast exceeding 106 even under a low drain voltage of -1 V, attributed to sub-10 nm FCC nanostructures. Furthermore, this phototransistor device successfully emulated the synaptic functions of sensing, learning, and short- and long-term memory in the human brain, along with a low energy consumption of 0.312 fJ. Hence, this report opens the pathways for developing promising bio-based electronic devices.
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Affiliation(s)
- Tiffany Mulia
- Department of Chemical Engineering, National Taiwan University, Taipei 10617, Taiwan; Advanced Research Center for Green Materials Science and Technology, National Taiwan University, Taipei 10617, Taiwan
| | - Ender Ercan
- Department of Chemical Engineering, National Taiwan University, Taipei 10617, Taiwan; Advanced Research Center for Green Materials Science and Technology, National Taiwan University, Taipei 10617, Taiwan
| | - Muhammad Mumtaz
- University of Grenoble Alpes, CNRS, CERMAV, 38000 Grenoble, France
| | - Yan-Cheng Lin
- Advanced Research Center for Green Materials Science and Technology, National Taiwan University, Taipei 10617, Taiwan; Department of Chemical Engineering, National Cheng Kung University, Tainan City 70101, Taiwan.
| | - Redouane Borsali
- University of Grenoble Alpes, CNRS, CERMAV, 38000 Grenoble, France.
| | - Wen-Chang Chen
- Department of Chemical Engineering, National Taiwan University, Taipei 10617, Taiwan; Advanced Research Center for Green Materials Science and Technology, National Taiwan University, Taipei 10617, Taiwan.
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2
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Adkins JF, Kaur A, Alom MS, Chandran H, Ramezanipour F, Wilson AJ. Directing the size and dispersity of silver nanoparticles with kudzu leaf extracts. RSC Adv 2023; 13:25360-25368. [PMID: 37622008 PMCID: PMC10445525 DOI: 10.1039/d3ra03847e] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2023] [Accepted: 08/03/2023] [Indexed: 08/26/2023] Open
Abstract
Kudzu is an abundant and invasive species in the Southeastern United States. The prospective use of kudzu as a non-toxic, green and biocompatible reducing and stabilizing agent for one-pot Ag nanoparticle synthesis was investigated. Ag nanoparticles were synthesized using aqueous and ethanolic kudzu leaf and stem extracts. The size and dispersity of the synthesized nanoparticles were found to depend on the extract used. Ultraviolet-visible and Fourier transform infrared spectroscopies were used to characterize the extracts. Surface-enhanced fluorescence and Raman scattering were used to characterize the surface species on synthesized Ag nanoparticles. The primary reducing and stabilizing agents in aqueous kudzu leaf extracts were determined to be reducing sugars and saponins which result in Ag nanoparticles with average diameters of 21.2 ± 4.8 nm. Ethanolic kudzu leaf extract was determined to be composed of chlorophyll, reducing sugars and saponins, producing Ag nanoparticles with average diameters of 9.0 ± 1.6 nm. Control experiments using a chlorophyllin standard as the reducing and stabilizing agent reveal that chlorophyll has a key role in the formation of small and monodisperse Ag nanoparticles. Experiments carried out in the absence of light demonstrate that reducing sugars and saponins also contribute to the formation of Ag nanoparticles in ethanolic kudzu leaf extracts. We propose a mechanism by which reducing sugars donate electrons to reduce Ag+ leading to the formation of Ag nanoparticles, forming carboxylic acid sugars which stabilize and partially stabilize Ag nanoparticles synthesized with aqueous and ethanolic kudzu leaf extracts, respectively. In the ethanolic extract, photoexcited chlorophyll serves as a co-reducing and co-stabilizing agent, leading to small and monodisperse Ag nanoparticles.
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Affiliation(s)
- Jaley Faith Adkins
- Department of Chemistry, University of Louisville Louisville Kentucky 40292 USA
| | - Amandeep Kaur
- Department of Chemistry, University of Louisville Louisville Kentucky 40292 USA
| | - Md Sofiul Alom
- Department of Chemistry, University of Louisville Louisville Kentucky 40292 USA
| | | | | | - Andrew J Wilson
- Department of Chemistry, University of Louisville Louisville Kentucky 40292 USA
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3
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Pitkänen EM, Sirén HMM. Capillary zone electrophoresis of lipoarabinomannan by multi-layered concentration. J Sep Sci 2021; 45:945-959. [PMID: 34932878 DOI: 10.1002/jssc.202100357] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2021] [Revised: 11/24/2021] [Accepted: 12/09/2021] [Indexed: 11/10/2022]
Abstract
The present paper describes a capillary zone electrophoresis method which relies on a multi-layered water-alkali solvent stacking with on-line ionization to enhance detection of mannose, arabinose, and their oligosaccharides, which are used as the migration profile standards but are also the distinctive structural components of lipoarabinomannan. Lipoarabinomannan is detected in patients having tuberculosis. The CE method with ionization of the whole saccharides without degradation in alkaline solution inside the capillary is based structural deprotonation of the molecules under ultrahigh pH conditions. The validation of the CE parameters revealed that the 15-fold electrolyte - water -injection plug allowed detection of one third lower concentrations than detected without on-line concentration. For the first time, the better detectability was seen especially for highly polymerized, but otherwise poorly ionized, arabino-octaose. The applicability of the method for detecting whole large biological saccharide complexes was confirmed by the glycolipid lipoarabinomannan. For the first time also, the migration of the indestructible lipoarabinomannan was detected together with oligosaccharides used representing the capping units, namely mannose, mannobiose and mannotriose. The myo-inositol-phosphate-lipid unit was seen to migrate separately from the arabinomannan, since it was hydrolyzed from one lipoarabinomannan product under alkaline conditions in CE. This article is protected by copyright. All rights reserved.
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Affiliation(s)
- Eeva Marja Pitkänen
- Department of Chemistry, University of Helsinki, PO Box 55, Helsinki, FI-00014, Finland
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Leclercq L, Saetear P, Rolland-Sabaté A, Biron JP, Chamieh J, Cipelletti L, Bornhop DJ, Cottet H. Size-Based Characterization of Polysaccharides by Taylor Dispersion Analysis with Photochemical Oxidation or Backscattering Interferometry Detections. Macromolecules 2019. [DOI: 10.1021/acs.macromol.9b00605] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Affiliation(s)
- Laurent Leclercq
- IBMM, Université de Montpellier, CNRS, ENSCM, Montpellier 34095, France
| | - Phoonthawee Saetear
- IBMM, Université de Montpellier, CNRS, ENSCM, Montpellier 34095, France
- Department of Chemistry and the Center of Excellence for Innovation in Chemistry, Faculty of Science, Mahidol University, Rama 6 Road, Ratchathewi, Bangkok 10400, Thailand
| | - Agnès Rolland-Sabaté
- UR1268 Biopolymères Interactions Assemblages, INRA, F-44300 Nantes, France
- UMR0408 Sécurité et Qualité des Produits d’Origine Végétale, INRA, Université Avignon, F-84000 Avignon, France
| | | | - Joseph Chamieh
- IBMM, Université de Montpellier, CNRS, ENSCM, Montpellier 34095, France
| | - Luca Cipelletti
- L2C, Université de Montpellier, CNRS, Montpellier 34095, France
| | | | - Hervé Cottet
- IBMM, Université de Montpellier, CNRS, ENSCM, Montpellier 34095, France
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Zheng Y, Li X, Chen X, Cai Z, Zhao H. Simultaneous determination of amino acids, purines and derivatives in serum by ultrahigh-performance liquid chromatography/tandem mass spectrometry. RAPID COMMUNICATIONS IN MASS SPECTROMETRY : RCM 2019; 33:81-88. [PMID: 30362632 DOI: 10.1002/rcm.8317] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/02/2018] [Revised: 10/17/2018] [Accepted: 10/17/2018] [Indexed: 06/08/2023]
Abstract
RATIONALE Amino acids, purines and derivatives play a key role in physiological and pathological processes, such as the development of gestational diabetes mellitus. However, little literature has reported the simultaneous quantification of amino acids and purines. Therefore, a reliable and robust method for the determination of amino acids and purines is necessary. METHODS A rapid and simple method based on ultrahigh-performance liquid chromatography/tandem mass spectrometry (UHPLC/MS/MS) was developed to determine the concentrations of twenty amino acids or derivatives and three purines or derivatives in serum. RESULTS The method was validated for linearity of calibration curve, limit of detection, limit of quantification, inter-day and intra-day precision, recovery, stability and matrix effect. The correlation coefficients of calibration curves were higher than 0.993 except for isoleucine. The recoveries ranged from 78.4% to 128.0% for three different concentrations of the spiked analytes. The matrix effect value ranged from -7.3% to 9.2%. CONCLUSIONS A rapid and simple UHPLC/MS/MS method for the simultaneous measurement of amino acids, purines and derivatives in serum samples was developed. The method was successfully applied to determine and compare the concentrations of analytes between gestational diabetes mellitus samples and controls.
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Affiliation(s)
- Yuanyuan Zheng
- State Key Laboratory of Environmental and Biological Analysis, Department of Chemistry, Hong Kong Baptist University, Hong Kong, SAR, China
| | - Xiaona Li
- State Key Laboratory of Environmental and Biological Analysis, Department of Chemistry, Hong Kong Baptist University, Hong Kong, SAR, China
| | - Xiangfeng Chen
- Key Laboratory for Applied Technology of Sophisticated Analytical Instruments, Qilu University of Technology (Shandong Academy of Science), Jinan, Shandong, China
| | - Zongwei Cai
- State Key Laboratory of Environmental and Biological Analysis, Department of Chemistry, Hong Kong Baptist University, Hong Kong, SAR, China
| | - Hongzhi Zhao
- State Key Laboratory of Environmental and Biological Analysis, Department of Chemistry, Hong Kong Baptist University, Hong Kong, SAR, China
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6
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Abstract
We have investigated the photodynamics of β-d-glucose employing our field-induced surface-hopping (FISH) method, which allows us to simulate the coupled electron-nuclear dynamics, explicitly including nonadiabatic effects and light-induced excitation. Our results reveal that from the initially populated S1 and S2 states, glucose returns nonradiatively to the ground state within about 200 fs. This takes place mainly via conical intersections (CIs), whose geometries in most cases involve the elongation of a single O-H bond, whereas in some instances, ring-opening due to dissociation of a C-O bond is observed. Experimentally, excitation to a distinct excited electronic state is improbable due to the presence of a dense manifold of states bearing similar oscillator strengths. Our FISH simulations, explicitly including a UV laser pulse of 6.43 eV photon energy, reveal that after initial excitation, the population is almost equally spread over several close-lying electronic states. This is followed by a fast nonradiative decay on the time scale of 100-200 fs, with the final return to the ground state proceeding via the S1 state through the same types of CIs as observed in the field-free simulations.
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Affiliation(s)
- Jens Petersen
- Institut für physikalische und theoretische Chemie, Julius-Maximilians-Universität Würzburg , Emil-Fischer-Str. 42, 97074 Würzburg, Germany
| | - Joachim O Lindner
- Institut für physikalische und theoretische Chemie, Julius-Maximilians-Universität Würzburg , Emil-Fischer-Str. 42, 97074 Würzburg, Germany
| | - Roland Mitrić
- Institut für physikalische und theoretische Chemie, Julius-Maximilians-Universität Würzburg , Emil-Fischer-Str. 42, 97074 Würzburg, Germany
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Dominguez MA, Jacksén J, Emmer Å, Centurión ME. Capillary electrophoresis method for the simultaneous determination of carbohydrates and proline in honey samples. Microchem J 2016. [DOI: 10.1016/j.microc.2016.05.017] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Xie X, Chang F, Li X, Li M, Zhu Z. Investigation and application of photochemically induced direct UV detection of low or non-UV absorbing compounds by capillary electrophoresis. Talanta 2016; 162:362-367. [PMID: 27837841 DOI: 10.1016/j.talanta.2016.10.046] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2016] [Accepted: 10/08/2016] [Indexed: 11/13/2022]
Abstract
Some low or non-UV absorbing compounds like amino acids might be accessible to direct UV detection by capillary electrophoresis (CE), due to the photochemical reaction in the detection window of the separation capillary under extremely strong alkaline conditions. However, with regards to the photochemical reaction procedure and the influencing factors in CE, no comprehensive studies have been done. Herein, two strategies were applied to investigate the photochemical reaction mechanism including the introduction of an additional UV lamp and the utilization of driving pressure. The former confirmed the occurrence of photolysis, while the latter solved the interference of electroosmotic flow (EOF). Furthermore, the online photochemical reaction and online preconcentration technique were combined to develop a rapid, simple and sensitive method for determination of seven essential amino acids (valine, leucine, phenylalanine, methionine, tryptophan, threonine and lysine). Eventually, the developed method was successfully applied to the analysis of real samples with good reproducibility and reliability. This novel and simple method, based on the photochemical reactions occurring in the detection window and coupling with online preconcentration techniques, shows a great potential for the rapid and sensitive detection of low or non-UV absorbing compounds.
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Affiliation(s)
- Xia Xie
- Beijing National Laboratory for Molecular Sciences, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, PR China
| | - Fengxia Chang
- Beijing National Laboratory for Molecular Sciences, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, PR China
| | - Xin Li
- Beijing National Laboratory for Molecular Sciences, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, PR China
| | - Meixian Li
- Beijing National Laboratory for Molecular Sciences, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, PR China
| | - Zhiwei Zhu
- Beijing National Laboratory for Molecular Sciences, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, PR China.
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9
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Fang XX, Fang P, Pan JZ, Fang Q. A compact short-capillary based high-speed capillary electrophoresis bioanalyzer. Electrophoresis 2016; 37:2376-83. [PMID: 27377052 DOI: 10.1002/elps.201600195] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2016] [Revised: 06/02/2016] [Accepted: 06/15/2016] [Indexed: 12/30/2022]
Abstract
Here, a compact high-speed CE bioanalyzer based on a short capillary has been developed. Multiple modules of picoliter scale sample injection, high-speed CE separation, sample changing, LIF detection, as well as a custom designed tablet computer for data processing, instrument controlling, and result displaying were integrated in the bioanalyzer with a total size of 23 × 17 × 19 cm (length × width × height). The high-speed CE bioanalyzer is capable of performing automated sample injection and separation for multiple samples and has been successfully applied in fast separations of amino acids, chiral amino acids, proteins and DNA fragments. For instance, baseline separation of six FITC-labeled amino acids and ultrahigh-speed separation of three amino acids could be achieved within 7 and 1 s, respectively. The separation speed and efficiency of the optimized high-speed CE system are comparable to or even better than those reported in microchip-based CE systems. We believe this bioanalyzer could provide an advanced platform for fundamental research in bioscience and clinical diagnosis, as well as in quality control for drugs, foods, and feeds.
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Affiliation(s)
- Xiao-Xia Fang
- Department of Chemistry, Innovation Center for Cell Signaling Network, Institute of Microanalytical Systems, Zhejiang University, Hangzhou, P. R. China
| | - Pan Fang
- Department of Chemistry, Innovation Center for Cell Signaling Network, Institute of Microanalytical Systems, Zhejiang University, Hangzhou, P. R. China
| | - Jian-Zhang Pan
- Department of Chemistry, Innovation Center for Cell Signaling Network, Institute of Microanalytical Systems, Zhejiang University, Hangzhou, P. R. China
| | - Qun Fang
- Department of Chemistry, Innovation Center for Cell Signaling Network, Institute of Microanalytical Systems, Zhejiang University, Hangzhou, P. R. China.
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10
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Sirén H, Savolainen LE, Tuuminen T. Capillary electrophoresis as a method to determine underivatized urinary lipoarabinomannans, a biomarker of active tuberculosis caused by Mycobacterium tuberculosis. J Sep Sci 2016; 39:2853-61. [PMID: 27196985 DOI: 10.1002/jssc.201600166] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2016] [Revised: 05/03/2016] [Accepted: 05/04/2016] [Indexed: 11/05/2022]
Abstract
Tuberculosis is a devastating contagious disease caused by Mycobacterium tuberculosis. This is the first report describing the development of novel capillary electrophoresis methods to detect lipoarabinomannans shed into the blood circulation by replicating bacteria. The novelty of the methods is the detection without derivatization. The lipoarabinomannan is detected owing to the ionization of the diverse functional groups of the structure, such as the multibranched mannan domain or the phosphatidyl group. Four alkaline solutions were used; normal polarity in three of them and reversed polarity in one. Urinary lipoarabinomannans by saccharide domains were identified with direct absorbance detection. The accuracy and the analytical sensitivity were then validated with cello-, manno- and xylooligosaccharides. Lipoarabinomannan detection was feasible within 20 min (RSD 2.1%). This method worked at the dynamic range of 0.1-10 μg/mL. With reversed polarity, indirect absorbance detection, and pH 9.0 electrolyte were used, the analytes migrated already within 5 min (RSD 0.01%). Inorganic nonabsorbing ions were used for this method optimization. This improvement resulted in the detection limit of 1 pg/mL in water and in the linear dynamic range of 1 pg/mL to 10 ng/mL. In conclusion, the described method has great potential as a point-of-care assay for clinical use.
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Affiliation(s)
- Heli Sirén
- Laboratory of Analytical Chemistry, Department of Chemistry, University of Helsinki, Helsinki, Finland
| | - Laura E Savolainen
- Haartman Institute, University of Helsinki, Department of Bacteriology and Immunology, Helsinki, Finland
| | - Tamara Tuuminen
- Haartman Institute, University of Helsinki, Department of Bacteriology and Immunology, Helsinki, Finland.,Eastern Finland Laboratory Centre Joint Authority Enterprise (ISLAB), Mikkeli District Laboratory, Mikkeli, Finland
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Gao J, Helmus R, Cerli C, Jansen B, Wang X, Kalbitz K. Robust analysis of underivatized free amino acids in soil by hydrophilic interaction liquid chromatography coupled with electrospray tandem mass spectrometry. J Chromatogr A 2016; 1449:78-88. [DOI: 10.1016/j.chroma.2016.04.071] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2015] [Revised: 03/24/2016] [Accepted: 04/25/2016] [Indexed: 12/14/2022]
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12
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Aid T, Paist L, Lopp M, Kaljurand M, Vaher M. An optimized capillary electrophoresis method for the simultaneous analysis of biomass degradation products in ionic liquid containing samples. J Chromatogr A 2016; 1447:141-7. [PMID: 27095128 DOI: 10.1016/j.chroma.2016.04.027] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2015] [Revised: 04/06/2016] [Accepted: 04/10/2016] [Indexed: 01/06/2023]
Abstract
An indirect capillary electrophoresis method for a quantitative determination of mono-, di- and oligosaccharides was developed to investigate biomass degradation, the isomerization of glucose into fructose and conversion of fructose to 5-hydroxymethylfurfural (5-HMF) in ionic liquids (ILs). Three chromophores, namely 2,6-pyridinedicarboxylic acid (PDC), maleic acid and phthalic acid, were used to perform indirect detection. The electroosmotic flow (EOF) was reversed to reduce analysis time, using 1-tetradecyl-3-methylimidazolium chloride (C14MImCl). The simultaneous separation of the underivatized mono-, di- and oligosaccharides was performed using four cellodextrin oligomers (cellotriose, cellotetraose, cellopentaose, cellohexaose), eight carbohydrates (xylose, fructose, glucose, galactose, lactose, cellobiose, raffinose, sucrose), two organic acids (acetic acid, levulinic acid) and 5-HMF. The best performance was obtained using background electrolyte (BGE) composed of 138.2mM NaOH, 40mM maleic acid and 5mMC14MImCl, the applied voltage was -21.7kV. The linear ranges for analyzed compounds were following: organic acids, raffinose and sucrose from 0.20 to 7mM, cellodextrin oligomers from 0.25 to 5mM, other analyzed carbohydrates from 0.25 to 7mM and 5-HMF from 0.05 to 7mM. The relative standard deviations (RSD) of peak areas varied from 3.47 to 9.62% during a 5-day analysis period and 0.58-5.29% during one day.
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Affiliation(s)
- Tiina Aid
- Tallinn University of Technology, Akadeemia tee 15, 12618 Tallinn, Estonia.
| | - Loore Paist
- Tallinn University of Technology, Akadeemia tee 15, 12618 Tallinn, Estonia
| | - Margus Lopp
- Tallinn University of Technology, Akadeemia tee 15, 12618 Tallinn, Estonia
| | - Mihkel Kaljurand
- Tallinn University of Technology, Akadeemia tee 15, 12618 Tallinn, Estonia
| | - Merike Vaher
- Tallinn University of Technology, Akadeemia tee 15, 12618 Tallinn, Estonia
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Schmid T, Baumann B, Himmelsbach M, Klampfl CW, Buchberger W. Analysis of saccharides in beverages by HPLC with direct UV detection. Anal Bioanal Chem 2016; 408:1871-8. [DOI: 10.1007/s00216-015-9290-1] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2015] [Revised: 12/18/2015] [Accepted: 12/21/2015] [Indexed: 11/28/2022]
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14
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Toppazzini M, Coslovi A, Rossi M, Flamigni A, Baiutti E, Campa C. Capillary Electrophoresis of Mono- and Oligosaccharides. Methods Mol Biol 2016; 1483:301-338. [PMID: 27645743 DOI: 10.1007/978-1-4939-6403-1_16] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
This chapter reports an overview of the recent advances in the analysis of mono- and oligosaccharides by capillary electrophoresis (CE); furthermore, relevant reviews and research articles recently published in the field are tabulated. Additionally, pretreatments and procedures applied to uncharged and acidic carbohydrates (i.e., monosaccharides and lower oligosaccharides carrying carboxylate, sulfate, or phosphate groups) are described.Representative examples of such procedures are reported in detail, upon describing robust methodologies for the study of (1) neutral oligosaccharides derivatized by reductive amination and by formation of glycosylamines; (2) sialic acid derivatized with 2-aminoacridone, released from human serum immunoglobulin G; (3) anomeric couples of neutral glycosides separated using borate-based buffers; (4) unsaturated, underivatized oligosaccharides from lyase-treated alginate.
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Affiliation(s)
- Mila Toppazzini
- GSK Vaccines, Manufacturing Science & Technology Bellaria di Rosia, Sovicille (Siena), Italy
| | - Anna Coslovi
- GSK Vaccines, Manufacturing Science & Technology Bellaria di Rosia, Sovicille (Siena), Italy
| | - Marco Rossi
- Bracco Imaging SpA-CRB Trieste, AREA Science Park, Trieste, Italy
| | - Anna Flamigni
- Bracco Imaging SpA-CRB Trieste, AREA Science Park, Trieste, Italy
| | - Edi Baiutti
- Bracco Imaging SpA-CRB Trieste, AREA Science Park, Trieste, Italy
| | - Cristiana Campa
- GSK Vaccines, Manufacturing Science & Technology Bellaria di Rosia, Sovicille (Siena), Italy.
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15
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Ibáñez C, Acunha T, Valdés A, García-Cañas V, Cifuentes A, Simó C. Capillary Electrophoresis in Food and Foodomics. Methods Mol Biol 2016; 1483:471-507. [PMID: 27645749 DOI: 10.1007/978-1-4939-6403-1_22] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Quality and safety assessment as well as the evaluation of other nutritional and functional properties of foods imply the use of robust, efficient, sensitive, and cost-effective analytical methodologies. Among analytical technologies used in the fields of food analysis and foodomics, capillary electrophoresis (CE) has generated great interest for the analyses of a large number of compounds due to its high separation efficiency, extremely small sample and reagent requirements, and rapid analysis. The introductory section of this chapter provides an overview of the recent applications of capillary electrophoresis (CE) in food analysis and foodomics. Relevant reviews and research articles on these topics are tabulated including papers published in the period 2011-2014. In addition, to illustrate the great capabilities of CE in foodomics the chapter describes the main experimental points to be taken into consideration for a metabolomic study of the antiproliferative effect of carnosic acid (a natural diterpene found in rosemary) against HT-29 human colon cancer cells.
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Affiliation(s)
- Clara Ibáñez
- Foodomics Laboratory, CIAL, CSIC, c/Nicolas Cabrera, 9 Campus Cantoblanco, Madrid, 28049, Spain
| | - Tanize Acunha
- Foodomics Laboratory, CIAL, CSIC, c/Nicolas Cabrera, 9 Campus Cantoblanco, Madrid, 28049, Spain
- CAPES Foundation, Ministry of Education of Brazil, Brasília, DF, 70.040-020, Brazil
| | - Alberto Valdés
- Foodomics Laboratory, CIAL, CSIC, c/Nicolas Cabrera, 9 Campus Cantoblanco, Madrid, 28049, Spain
| | - Virginia García-Cañas
- Foodomics Laboratory, CIAL, CSIC, c/Nicolas Cabrera, 9 Campus Cantoblanco, Madrid, 28049, Spain
| | - Alejandro Cifuentes
- Foodomics Laboratory, CIAL, CSIC, c/Nicolas Cabrera, 9 Campus Cantoblanco, Madrid, 28049, Spain
| | - Carolina Simó
- Foodomics Laboratory, CIAL, CSIC, c/Nicolas Cabrera, 9 Campus Cantoblanco, Madrid, 28049, Spain.
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16
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Schmid T, Himmelsbach M, Buchberger WW. Investigation of photochemical reaction products of glucose formed during direct UV detection in CE. Electrophoresis 2015; 37:947-53. [DOI: 10.1002/elps.201500283] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2015] [Revised: 07/24/2015] [Accepted: 07/24/2015] [Indexed: 11/06/2022]
Affiliation(s)
- Thomas Schmid
- Institute of Analytical Chemistry; Johannes Kepler University Linz; Linz Austria
| | - Markus Himmelsbach
- Institute of Analytical Chemistry; Johannes Kepler University Linz; Linz Austria
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Alinat E, Jemmali S, Delaunay N, Archer X, Gareil P. Analysis of underivatized cellodextrin oligosaccharides by capillary electrophoresis with direct photochemically induced UV-detection. Electrophoresis 2015; 36:1555-63. [DOI: 10.1002/elps.201400605] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2014] [Revised: 03/12/2015] [Accepted: 03/14/2015] [Indexed: 12/12/2022]
Affiliation(s)
- Elodie Alinat
- PSL Research University; ESPCI ParisTech, Laboratory of Analytical and Bioanalytical Sciences, and Miniaturization (LSABM); Paris France
- Central Laboratory of Police Prefecture (LCPP); Paris France
- CNRS; CBI; UMR 8231 Paris France
| | - Selma Jemmali
- PSL Research University; ESPCI ParisTech, Laboratory of Analytical and Bioanalytical Sciences, and Miniaturization (LSABM); Paris France
- CNRS; CBI; UMR 8231 Paris France
| | - Nathalie Delaunay
- PSL Research University; ESPCI ParisTech, Laboratory of Analytical and Bioanalytical Sciences, and Miniaturization (LSABM); Paris France
- CNRS; CBI; UMR 8231 Paris France
| | - Xavier Archer
- Central Laboratory of Police Prefecture (LCPP); Paris France
| | - Pierre Gareil
- PSL Research University; ESPCI ParisTech, Laboratory of Analytical and Bioanalytical Sciences, and Miniaturization (LSABM); Paris France
- CNRS; CBI; UMR 8231 Paris France
- PSL Research University; Chimie ParisTech; Paris France
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Toutounji MR, Van Leeuwen MP, Oliver JD, Shrestha AK, Castignolles P, Gaborieau M. Quantification of sugars in breakfast cereals using capillary electrophoresis. Carbohydr Res 2015; 408:134-41. [DOI: 10.1016/j.carres.2015.03.008] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2014] [Revised: 02/16/2015] [Accepted: 03/09/2015] [Indexed: 11/27/2022]
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Schmid T, Himmelsbach M, Oliver JD, Gaborieau M, Castignolles P, Buchberger W. Investigation of photochemical reactions of saccharides during direct ultraviolet absorbance detection in capillary electrophoresis. J Chromatogr A 2015; 1388:259-66. [DOI: 10.1016/j.chroma.2015.02.030] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2014] [Revised: 02/09/2015] [Accepted: 02/09/2015] [Indexed: 10/24/2022]
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20
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Kaijanen L, Reinikainen SP, Pietarinen S, Sirén H, Jernström E. Detection of Novel Carbohydrate-Related Compounds in Aqueous Samples Using a Capillary Electrophoretic Profiling Method. SEP SCI TECHNOL 2014. [DOI: 10.1080/01496395.2014.966202] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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21
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Separation and Characterization of Synthetic Polyelectrolytes and Polysaccharides with Capillary Electrophoresis. ACTA ACUST UNITED AC 2014. [DOI: 10.1155/2014/798503] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
The development of macromolecular engineering and the need for renewable and sustainable polymer sources make polymeric materials progressively more sophisticated but also increasingly complex to characterize. Size-exclusion chromatography (SEC or GPC) has a monopoly in the separation and characterization of polymers, but it faces a number of proven, though regularly ignored, limitations for the characterization of a number of complex samples such as polyelectrolytes and polysaccharides. Free solution capillary electrophoresis (CE), or capillary zone electrophoresis, allows usually more robust separations than SEC due to the absence of a stationary phase. It is, for example, not necessary to filter the samples for analysis with CE. CE is mostly limited to polymers that are charged or can be charged, but in the case of polyelectrolytes it has similarities with liquid chromatography in the critical conditions: it does not separate a charged homopolymer by molar mass. It can thus characterize the topology of a branched polymer, such as poly(acrylic acid), or the purity or composition of copolymers, either natural ones such as pectin, chitosan, and gellan gum or synthetic ones.
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Oliver JD, Sutton AT, Karu N, Phillips M, Markham J, Peiris P, Hilder EF, Castignolles P. Simple and robust monitoring of ethanol fermentations by capillary electrophoresis. Biotechnol Appl Biochem 2014; 62:329-42. [PMID: 25040822 DOI: 10.1002/bab.1269] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2014] [Accepted: 07/06/2014] [Indexed: 11/08/2022]
Abstract
Free-solution capillary electrophoresis (CE), or capillary zone electrophoresis, with direct UV detection was used for the first time for the determination of mono- and disaccharides, sugar alcohols, and ethanol in fermentation broths. Sample preparation proved to be minimal: no derivatization or specific sample purification was needed. The CE conditions can be adapted to the type of fermentation by simply altering the background electrolyte (BGE). KOH (130 mM) or NaOH (130 mM) as the BGE led to the fastest analysis time when monitoring simple fermentations. A mixture of 65 mM NaOH and 65 mM LiOH led to a 19% improvement in resolution for a complex mixture of carbohydrates. Quantification of a simple carbohydrate fermentation by CE showed values in close agreement with that of high-performance anion exchange chromatography and high-performance liquid chromatography (HPLC) on a cation exchange resin. For complex fermentations, quantification of carbohydrates by HPLC and CE led to similar results, whereas CE requires an injection volume of only 10-20 nL. Analysis of an ethanol fermentation of hydrolyzed plant fiber demonstrated the robustness of the separation and detection of carbohydrates, as well as ethanol. Ethanol determination is achieved by coupling the CE method to pressure mobilization, using the same instrument and the same sample.
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Affiliation(s)
- James D Oliver
- University of Western Sydney, Australian Centre for Research on Separation Sciences (ACROSS), School of Science and Health, Parramatta Campus, Penrith NSW, Australia.,University of Western Sydney, School of Science and Health, Hawkesbury Campus, Penrith NSW, Australia
| | - Adam T Sutton
- University of Western Sydney, Australian Centre for Research on Separation Sciences (ACROSS), School of Science and Health, Parramatta Campus, Penrith NSW, Australia
| | - Naama Karu
- Australian Centre for Research on Separation Science (ACROSS), School of Physical Sciences, University of Tasmania, Hobart TAS, Australia
| | - Michael Phillips
- University of Western Sydney, School of Science and Health, Hawkesbury Campus, Penrith NSW, Australia
| | - Julie Markham
- University of Western Sydney, School of Science and Health, Hawkesbury Campus, Penrith NSW, Australia
| | - Paul Peiris
- University of Western Sydney, School of Science and Health, Hawkesbury Campus, Penrith NSW, Australia
| | - Emily F Hilder
- Australian Centre for Research on Separation Science (ACROSS), School of Physical Sciences, University of Tasmania, Hobart TAS, Australia
| | - Patrice Castignolles
- University of Western Sydney, Australian Centre for Research on Separation Sciences (ACROSS), School of Science and Health, Parramatta Campus, Penrith NSW, Australia
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Zhao J, Hu DJ, Lao K, Yang ZM, Li SP. Advance of CE and CEC in phytochemical analysis (2012–2013). Electrophoresis 2014; 35:205-24. [PMID: 24114928 DOI: 10.1002/elps.201300321] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2013] [Revised: 09/17/2013] [Accepted: 09/17/2013] [Indexed: 12/11/2022]
Abstract
This article presents an overview of the advance of CE and CEC in phytochemical analysis, based on the literature not mentioned in our previous review papers [Chen, X. J., Zhao, J., Wang, Y. T., Huang, L. Q., Li, S. P., Electrophoresis 2012, 33, 168–179], mainly covering the years 2012–2013. In this article, attention is paid to online preconcentration, rapid separation, and sensitive detection. Selected examples illustrate the applicability of CE and CEC in biomedical, pharmaceutical, environmental, and food analysis. Finally, some general conclusions and future perspectives are given.
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Creamer JS, Oborny NJ, Lunte SM. Recent advances in the analysis of therapeutic proteins by capillary and microchip electrophoresis. ANALYTICAL METHODS : ADVANCING METHODS AND APPLICATIONS 2014; 6:5427-5449. [PMID: 25126117 PMCID: PMC4128283 DOI: 10.1039/c4ay00447g] [Citation(s) in RCA: 58] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/04/2023]
Abstract
The development of therapeutic proteins and peptides is an expensive and time-intensive process. Biologics, which have become a multi-billion dollar industry, are chemically complex products that require constant observation during each stage of development and production. Post-translational modifications along with chemical and physical degradation from oxidation, deamidation, and aggregation, lead to high levels of heterogeneity that affect drug quality and efficacy. The various separation modes of capillary electrophoresis (CE) are commonly utilized to perform quality control and assess protein heterogeneity. This review attempts to highlight the most recent developments and applications of CE separation techniques for the characterization of protein and peptide therapeutics by focusing on papers accepted for publication in the in the two-year period between January 2012 and December 2013. The separation principles and technological advances of CE, capillary gel electrophoresis, capillary isoelectric focusing, capillary electrochromatography and CE-mass spectrometry are discussed, along with exciting new applications of these techniques to relevant pharmaceutical issues. Also included is a small selection of papers on microchip electrophoresis to show the direction this field is moving with regards to the development of inexpensive and portable analysis systems for on-site, high-throughput analysis.
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Affiliation(s)
- Jessica S. Creamer
- Department of Pharmaceutical Chemistry, University of Kansas, Lawrence, KS, USA
- Ralph N. Adams Institute for Bioanalytical Chemistry, University of Kansas, Lawrence, KS, USA
| | - Nathan J. Oborny
- Department of Bioengineering, University of Kansas, Lawrence, KS, USA
- Ralph N. Adams Institute for Bioanalytical Chemistry, University of Kansas, Lawrence, KS, USA
| | - Susan M. Lunte
- Department of Pharmaceutical Chemistry, University of Kansas, Lawrence, KS, USA
- Department of Bioengineering, University of Kansas, Lawrence, KS, USA
- Ralph N. Adams Institute for Bioanalytical Chemistry, University of Kansas, Lawrence, KS, USA
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25
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Ethanol determination using pressure mobilization and free solution capillary electrophoresis by photo-oxidation assisted ultraviolet detection. J Chromatogr A 2014; 1348:150-7. [DOI: 10.1016/j.chroma.2014.04.076] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2014] [Revised: 04/01/2014] [Accepted: 04/18/2014] [Indexed: 11/17/2022]
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26
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Understanding and improving direct UV detection of monosaccharides and disaccharides in free solution capillary electrophoresis. Anal Chim Acta 2014; 809:183-93. [DOI: 10.1016/j.aca.2013.12.001] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2013] [Revised: 11/30/2013] [Accepted: 12/02/2013] [Indexed: 11/22/2022]
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Poinsot V, Ong-Meang V, Gavard P, Couderc F. Recent advances in amino acid analysis by capillary electromigration methods, 2011-2013. Electrophoresis 2013; 35:50-68. [DOI: 10.1002/elps.201300306] [Citation(s) in RCA: 52] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2013] [Revised: 09/11/2013] [Accepted: 09/11/2013] [Indexed: 12/28/2022]
Affiliation(s)
- Véréna Poinsot
- Laboratoire des IMRCP; Université Paul Sabatier; Toulouse France
| | | | - Pierre Gavard
- Laboratoire des IMRCP; Université Paul Sabatier; Toulouse France
| | - François Couderc
- Laboratoire des IMRCP; Université Paul Sabatier; Toulouse France
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García-Cañas V, Simó C, Castro-Puyana M, Cifuentes A. Recent advances in the application of capillary electromigration methods for food analysis and Foodomics. Electrophoresis 2013; 35:147-69. [DOI: 10.1002/elps.201300315] [Citation(s) in RCA: 66] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2013] [Revised: 08/19/2013] [Accepted: 08/19/2013] [Indexed: 12/25/2022]
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30
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Analysis of monosaccharides and oligosaccharides in the pulp and paper industry by use of capillary zone electrophoresis: a review. Anal Bioanal Chem 2013; 405:5773-84. [PMID: 23715674 DOI: 10.1007/s00216-013-7031-x] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2013] [Revised: 03/14/2013] [Accepted: 04/26/2013] [Indexed: 10/26/2022]
Abstract
Carbohydrate analysis is an important source of the information required for understanding and control of pulp and paper processes. The behavior of cellulose and hemicelluloses in the process, carbohydrate-lignin interactions, and the enzymatic treatment of fibers are examples of situations for which reliable, fast, qualitative, and quantitative methods are required. New uses of lignocellulosic material have further increased the need for carbohydrate analysis. This review collates and summarizes the most important findings and approaches in the analysis of wood-based carbohydrates by use of capillary zone electrophoresis and provides an analysis of the effect of different conditions on the separation, showing the advantages and limitations of the methods used. It provides guidelines for achieving higher quality and improved separation efficiency in carbohydrate analysis.
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Oliver JD, Gaborieau M, Hilder EF, Castignolles P. Simple and robust determination of monosaccharides in plant fibers in complex mixtures by capillary electrophoresis and high performance liquid chromatography. J Chromatogr A 2013; 1291:179-86. [PMID: 23608404 DOI: 10.1016/j.chroma.2013.03.041] [Citation(s) in RCA: 45] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2012] [Revised: 03/17/2013] [Accepted: 03/18/2013] [Indexed: 11/29/2022]
Abstract
Carbohydrates partially liberated by acid hydrolysis of plant fiber can be separated by hydrophilic interaction liquid chromatography (HILIC), ligand-exchange liquid chromatography or other forms of LC with ion-exchange columns. However, the robust hydrogen-exchange columns show co-elution of galactose, xylose and mannose. Free solution capillary electrophoresis (CE) can be used without derivatization at pH 12.6 and was found to provide a higher resolution of galactose and xylose than common LC with no sample pre-treatment required, other than dilution, within 26min. CE was able to provide resolution higher than 0.79 for all separated carbohydrates, and the RSDs of determined concentrations lower than 10% for concentrations above 1.3gL(-1). A quantitative comparison between CE and HPLC revealed that up to 22% more carbohydrates are quantified with CE. Direct UV detection in CE of mono- and disaccharides is unexpectedly possible at 270nm. NMR analysis shows that alkaline degradation is too slow to explain this detection. This CE detection sensitivity is increased by the electric field and our CE and NMR analyses are consistent with a photo-oxidation process.
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Affiliation(s)
- James D Oliver
- University of Western Sydney (UWS), Australian Centre for Research on Separation Science (ACROSS), School of Science and Health, Penrith, NSW 2751, Australia.
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Zhou G, Pang H, Tang Y, Yao X, Mo X, Zhu S, Guo S, Qian D, Qian Y, Su S, Zhang L, Jin C, Qin Y, Duan JA. Hydrophilic interaction ultra-performance liquid chromatography coupled with triple-quadrupole tandem mass spectrometry for highly rapid and sensitive analysis of underivatized amino acids in functional foods. Amino Acids 2013; 44:1293-305. [DOI: 10.1007/s00726-013-1463-7] [Citation(s) in RCA: 48] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2012] [Accepted: 01/15/2013] [Indexed: 11/28/2022]
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Li Q, Zhang T, Zhu Y, Cheng YQ, Lin QH, Fang Q. Automated high-speed CE system for multiple samples. Electrophoresis 2013. [DOI: 10.1002/elps.201200401] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Qi Li
- Department of Chemistry; Institute of Microanalytical Systems; Zhejiang University; Hangzhou; P. R. China
| | - Ting Zhang
- Department of Chemistry; Institute of Microanalytical Systems; Zhejiang University; Hangzhou; P. R. China
| | - Ying Zhu
- Department of Chemistry; Institute of Microanalytical Systems; Zhejiang University; Hangzhou; P. R. China
| | - Yong-Qiang Cheng
- Department of Chemistry; Institute of Microanalytical Systems; Zhejiang University; Hangzhou; P. R. China
| | - Qing-Hu Lin
- Department of Chemistry; Institute of Microanalytical Systems; Zhejiang University; Hangzhou; P. R. China
| | - Qun Fang
- Department of Chemistry; Institute of Microanalytical Systems; Zhejiang University; Hangzhou; P. R. China
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Xie HY, Liu Q, Li JH, Fan LY, Cao CX. Model creation of moving redox reaction boundary in agarose gel electrophoresis by traditional potassium permanganate method. Analyst 2013; 138:1137-40. [DOI: 10.1039/c2an36373a] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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35
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Sarazin C, Delaunay N, Costanza C, Eudes V, Gareil P. On the use of capillary electrophoresis for the determination of inorganic anions and cations, and carbohydrates in residues collected after a simulated suicide bombing attack. Talanta 2013. [DOI: 10.1016/j.talanta.2012.10.048] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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36
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Sarazin C, Delaunay N, Costanza C, Eudes V, Gareil P. Application of a new capillary electrophoretic method for the determination of carbohydrates in forensic, pharmaceutical, and beverage samples. Talanta 2012; 99:202-6. [DOI: 10.1016/j.talanta.2012.05.040] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2012] [Revised: 05/10/2012] [Accepted: 05/19/2012] [Indexed: 10/28/2022]
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37
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Sarazin C, Delaunay N, Costanza C, Eudes V, Gareil P, Vial J. On the use of response surface strategy to elucidate the electrophoretic migration of carbohydrates and optimize their separation. J Sep Sci 2012; 35:1351-8. [DOI: 10.1002/jssc.201101037] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
| | | | | | - Véronique Eudes
- Central Laboratory of the Prefecture de Police; Paris; France
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38
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Mittermayr S, Guttman A. Influence of molecular configuration and conformation on the electromigration of oligosaccharides in narrow bore capillaries. Electrophoresis 2012; 33:1000-7. [DOI: 10.1002/elps.201100681] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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