1
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Chu Z, Chen J, Zhang J, Xie Q, Zhang F, Wang Q. Detection of Escherichia coli by capillary electrophoresis assisted by large volume sample stacking and nicking endonuclease signal amplification. J Chromatogr A 2023; 1706:464275. [PMID: 37542930 DOI: 10.1016/j.chroma.2023.464275] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2023] [Revised: 07/31/2023] [Accepted: 08/01/2023] [Indexed: 08/07/2023]
Abstract
Efficient, accurate and economical detection of pathogenic bacteria is crucial in ensuring food safety and preventing foodborne illnesses. In this study, a capillary electrophoresis coupled laser-induced fluorescence assay (CE-LIF) was developed for the detection of Escherichia coli (E. coli) by detecting its specific DNA. The CE-LIF was assisted by both online enrichment and offline amplification to improve the detection sensitivity of bacterial DNA. Here the online amplification was performed by large volume sample stacking (LVSS), while the offline amplification was nicking endonuclease signal amplification (NESA). Under the optimal experimental conditions, the detection limit of bacterial target DNA was 2.5 fM, and the conversion concentration of E. coli was 3 CFU · mL-1. The method had been applied to the detection of commercially available skim milk samples with good results, which proved that it could be used as an effective tool for food and environmental bacteria monitoring.
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Affiliation(s)
- Zhaohui Chu
- School of Chemistry and Molecular Engineering, East China Normal University, 500 Dongchuan Road, Shanghai 200241, PR China
| | - Jingyi Chen
- School of Chemistry and Molecular Engineering, East China Normal University, 500 Dongchuan Road, Shanghai 200241, PR China
| | - Jingzi Zhang
- School of Chemistry and Molecular Engineering, East China Normal University, 500 Dongchuan Road, Shanghai 200241, PR China
| | - Qihui Xie
- School of Chemistry and Molecular Engineering, East China Normal University, 500 Dongchuan Road, Shanghai 200241, PR China
| | - Fan Zhang
- School of Chemistry and Molecular Engineering, East China Normal University, 500 Dongchuan Road, Shanghai 200241, PR China.
| | - Qingjiang Wang
- School of Chemistry and Molecular Engineering, East China Normal University, 500 Dongchuan Road, Shanghai 200241, PR China.
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2
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Zeid AM, Abdussalam A, Hanif S, Anjum S, Lou B, Xu G. Recent advances in microchip electrophoresis for analysis of pathogenic bacteria and viruses. Electrophoresis 2023; 44:15-34. [PMID: 35689426 DOI: 10.1002/elps.202200082] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2022] [Revised: 05/31/2022] [Accepted: 06/07/2022] [Indexed: 02/01/2023]
Abstract
Life-threatening diseases, such as hepatitis B, pneumonia, tuberculosis, and COVID-19, are widespread due to pathogenic bacteria and viruses. Therefore, the development of highly sensitive, rapid, portable, cost-effective, and selective methods for the analysis of such microorganisms is a great challenge. Microchip electrophoresis (ME) has been widely used in recent years for the analysis of bacterial and viral pathogens in biological and environmental samples owing to its portability, simplicity, cost-effectiveness, and rapid analysis. However, microbial enrichment and purification are critical steps for accurate and sensitive analysis of pathogenic bacteria and viruses in complex matrices. Therefore, we first discussed the advances in the sample preparation technologies associated with the accurate analysis of such microorganisms, especially the on-chip microfluidic-based sample preparations such as dielectrophoresis and microfluidic membrane filtration. Thereafter, we focused on the recent advances in the lab-on-a-chip electrophoretic analysis of pathogenic bacteria and viruses in different complex matrices. As the microbial analysis is mainly based on the analysis of nucleic acid of the microorganism, the integration of nucleic acid-based amplification techniques such as polymerase chain reaction (PCR), quantitative PCR, and multiplex PCR with ME will result in an accurate and sensitive analysis of microbial pathogens. Such analyses are very important for the point-of-care diagnosis of various infectious diseases.
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Affiliation(s)
- Abdallah M Zeid
- State Key Laboratory of Electroanalytical Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, Jilin, P. R. China.,Department of Pharmaceutical Analytical Chemistry, Faculty of Pharmacy, Mansoura University, Mansoura, Egypt
| | - Abubakar Abdussalam
- State Key Laboratory of Electroanalytical Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, Jilin, P. R. China.,College of Natural and Pharmaceutical Sciences, Department of Chemistry, Bayero University, Kano, Nigeria.,School of Applied Chemistry and Engineering, University of Science and Technology of China, Hefei, Anhui, P. R. China
| | - Saima Hanif
- Department of Biological Sciences, National University of Medical Sciences (NUMS), Punjab, Pakistan
| | - Saima Anjum
- Department of Chemistry, Govt. Sadiq College Women University, Bahawalpur, Pakistan
| | - Baohua Lou
- State Key Laboratory of Electroanalytical Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, Jilin, P. R. China.,School of Applied Chemistry and Engineering, University of Science and Technology of China, Hefei, Anhui, P. R. China
| | - Guobao Xu
- State Key Laboratory of Electroanalytical Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, Jilin, P. R. China.,School of Applied Chemistry and Engineering, University of Science and Technology of China, Hefei, Anhui, P. R. China
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3
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Zhang Y, Hu X, Wang Q. Review of microchip analytical methods for the determination of pathogenic Escherichia coli. Talanta 2021; 232:122410. [PMID: 34074400 DOI: 10.1016/j.talanta.2021.122410] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2021] [Revised: 03/28/2021] [Accepted: 04/07/2021] [Indexed: 12/13/2022]
Abstract
Bacterial infections remain the principal cause of mortality worldwide, making the detection of pathogenic bacteria highly important, especially Escherichia coli (E. coli). Current E. coli detection methods are labour-intensive, time-consuming, or require expensive instrumentation, making it critical to develop new strategies that are sensitive and specific. Microchips are an automated analytical technique used to analyse food based on their separation efficiency and low analyte consumption, which make them the preferred method to detect pathogenic bacteria. This review presents an overview of microchip-based analytical methods for analysing E. coli, which were published in recent years. Specifically, this review focuses on current research based on microchips for the detection of E. coli and reviews the limitations of microchip-based methods and future perspectives for the analysis of pathogenic bacteria.
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Affiliation(s)
- Yan Zhang
- Faculty of Science, Kunming University of Science and Technology, Kunming, 650500, China; School of Chemistry and Molecular Engineering, East China Normal University, 500 Dongchuan Road, Shanghai, 200241, PR China
| | - Xianzhi Hu
- Faculty of Science, Kunming University of Science and Technology, Kunming, 650500, China.
| | - Qingjiang Wang
- School of Chemistry and Molecular Engineering, East China Normal University, 500 Dongchuan Road, Shanghai, 200241, PR China.
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4
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Sheng A, Wang P, Yang J, Tang L, Chen F, Zhang J. MXene Coupled with CRISPR-Cas12a for Analysis of Endotoxin and Bacteria. Anal Chem 2021; 93:4676-4681. [DOI: 10.1021/acs.analchem.1c00371] [Citation(s) in RCA: 40] [Impact Index Per Article: 13.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- Anzhi Sheng
- Research Center of Molecular Recognition and Biosensing, School of Life Sciences, Shanghai University, Shanghai 200444, P. R. China
| | - Pei Wang
- Research Center of Molecular Recognition and Biosensing, School of Life Sciences, Shanghai University, Shanghai 200444, P. R. China
| | - Jingyi Yang
- Research Center of Molecular Recognition and Biosensing, School of Life Sciences, Shanghai University, Shanghai 200444, P. R. China
| | - Longfei Tang
- Research Center of Molecular Recognition and Biosensing, School of Life Sciences, Shanghai University, Shanghai 200444, P. R. China
| | - Feng Chen
- Department of Orthopedic, Spinal Pain Research Institute, Shanghai Tenth People’s Hospital, Tongji University School of Medicine, Shanghai 200072, P. R. China
- National Engineering Research Center for Nanotechnology, Shanghai 200241, P. R. China
| | - Juan Zhang
- Research Center of Molecular Recognition and Biosensing, School of Life Sciences, Shanghai University, Shanghai 200444, P. R. China
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5
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Ultrasensitive microchip electrophoretic detection of the mecA gene in methicillin-resistant Staphylococcus aureus (MRSA) based on isothermal strand-displacement polymerase reaction. Talanta 2021; 222:121686. [DOI: 10.1016/j.talanta.2020.121686] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2020] [Revised: 09/13/2020] [Accepted: 09/19/2020] [Indexed: 12/19/2022]
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6
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Zhang J, Li Y, Duan S, He F. Highly electrically conductive two-dimensional Ti 3C 2 Mxenes-based 16S rDNA electrochemical sensor for detecting Mycobacterium tuberculosis. Anal Chim Acta 2020; 1123:9-17. [PMID: 32507244 DOI: 10.1016/j.aca.2020.05.013] [Citation(s) in RCA: 25] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2020] [Revised: 04/14/2020] [Accepted: 05/04/2020] [Indexed: 12/15/2022]
Abstract
Tuberculosis is one of the life-threatening infectious diseases caused by the obligate pathogenic bacterium Mycobacterium tuberculosis (M. tuberculosis). The current M. tuberculosis detection approaches cannot satisfy the requirement for early clinical diagnosis because of long detection time as well as low specificity. In our study, an electrochemical M. tuberculosis sensor was constructed by using specific fragment of 16S rDNA of M. tuberculosis H37Ra as target biomarker, peptide nucleic acid (PNA) as capture probe and highly conductive two-dimensional Ti3C2 MXenes as the signal amplified transduction material. After the hybridization between PNA and the specific fragment of 16S rDNA on the substrate of PNA-AuNPs nanogap network electrode, the target fragments were directly linked with conductive Ti3C2 MXenes by strong interactions between zirconium-cross-linked Ti3C2 MXenes and phosphate groups of the target fragments. The linking of Ti3C2 MXenes to the hybridized target fragments would bridge the gaps of the interrupted AuNPs in the nanogap network electrode and forming the conductive connection to cause the change in conductance between the electrodes. This conductance change could be used for M. tuberculosis detection. The limit of detection (LOD) of proposed method was 20 CFU mL-1, and detection time was 2 h. Proposed method would find potential application in rapid detection of M. tuberculosis.
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Affiliation(s)
- Jialin Zhang
- State Key Laboratory of Chemo/Biosensing and Chemometrics, College of Chemistry and Chemical Engineering, Hunan University, Changsha, 410082, PR China; Faculty of Materials Metallurgy and Chemistry, Jiangxi University of Science and Technology, Ganzhou, 341000, PR China
| | - Yao Li
- State Key Laboratory of Chemo/Biosensing and Chemometrics, College of Chemistry and Chemical Engineering, Hunan University, Changsha, 410082, PR China
| | - Shaoyun Duan
- State Key Laboratory of Chemo/Biosensing and Chemometrics, College of Chemistry and Chemical Engineering, Hunan University, Changsha, 410082, PR China
| | - Fengjiao He
- State Key Laboratory of Chemo/Biosensing and Chemometrics, College of Chemistry and Chemical Engineering, Hunan University, Changsha, 410082, PR China.
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7
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He C, Chen S, Zhao J, Tian J, Zhao S. Ultrasensitive detection of microRNA-21 based on electrophoresis assisted cascade chemiluminescence signal amplification for the identification of cancer cells. Talanta 2020; 209:120505. [DOI: 10.1016/j.talanta.2019.120505] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2019] [Revised: 10/21/2019] [Accepted: 10/24/2019] [Indexed: 02/08/2023]
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8
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Chen X, Miller A, Cao S, Gan Y, Zhang J, He Q, Wang RQ, Yong X, Qin P, Lapizco-Encinas BH, Du K. Rapid Escherichia coli Trapping and Retrieval from Bodily Fluids via a Three-Dimensional Bead-Stacked Nanodevice. ACS APPLIED MATERIALS & INTERFACES 2020; 12:7888-7896. [PMID: 31939648 DOI: 10.1021/acsami.9b19311] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
A novel micro- and nanofluidic device stacked with magnetic beads has been developed to efficiently trap, concentrate, and retrieve Escherichia coli (E. coli) from the bacterial suspension and pig plasma. The small voids between the magnetic beads are used to physically isolate the bacteria in the device. We used computational fluid dynamics, three-dimensional (3D) tomography technology, and machine learning to probe and explain the bead stacking in a small 3D space with various flow rates. A combination of beads with different sizes is utilized to achieve a high capture efficiency (∼86%) with a flow rate of 50 μL/min. Leveraging the high deformability of this device, an E. coli sample can be retrieved from the designated bacterial suspension by applying a higher flow rate followed by rapid magnetic separation. This unique function is also utilized to concentrate E. coli cells from the original bacterial suspension. An on-chip concentration factor of ∼11× is achieved by inputting 1300 μL of the E. coli sample and then concentrating it in 100 μL of buffer. Importantly, this multiplexed, miniaturized, inexpensive, and transparent device is easy to fabricate and operate, making it ideal for pathogen separation in both laboratory and point-of-care settings.
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Affiliation(s)
- Xinye Chen
- Department of Microsystems Engineering , Rochester Institute of Technology , Rochester , New York 14623 , United States
- Department of Mechanical Engineering , Rochester Institute of Technology , Rochester , New York 14623 , United States
| | - Abbi Miller
- Department of Biomedical Engineering , Rochester Institute of Technology , Rochester , New York 14623 , United States
| | - Shengting Cao
- Department of Electrical and Computer Engineering , University of Alabama , Tuscaloosa , Alabama 35401 , United States
| | - Yu Gan
- Department of Electrical and Computer Engineering , University of Alabama , Tuscaloosa , Alabama 35401 , United States
| | - Jie Zhang
- Carollo Engineers, Inc. , Seattle , Washington 98101 , United States
| | - Qian He
- Department of Mechanical Engineering , Rochester Institute of Technology , Rochester , New York 14623 , United States
- Center of Precision Medicine and Healthcare , Tsinghua-Berkeley Shenzhen Institute , Shenzhen , Guangdong Province 518055 , China
| | - Ruo-Qian Wang
- Department of Civil and Environmental Engineering , Rutgers, The State University of New Jersey , New Brunswick , New Jersey 08854 , United States
| | - Xin Yong
- Department of Mechanical Engineering , The State University of New York , Binghamton , New York 13902 , United States
| | - Peiwu Qin
- Center of Precision Medicine and Healthcare , Tsinghua-Berkeley Shenzhen Institute , Shenzhen , Guangdong Province 518055 , China
| | - Blanca H Lapizco-Encinas
- Department of Biomedical Engineering , Rochester Institute of Technology , Rochester , New York 14623 , United States
| | - Ke Du
- Department of Microsystems Engineering , Rochester Institute of Technology , Rochester , New York 14623 , United States
- Department of Mechanical Engineering , Rochester Institute of Technology , Rochester , New York 14623 , United States
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9
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Yang X, Zhao J, Chen S, Huang Y, Zhaok S. An ultrasensitive microchip electrophoresis chemiluminescence assay platform for detection of trace biomolecules. J Chromatogr A 2019; 1613:460693. [PMID: 31732154 DOI: 10.1016/j.chroma.2019.460693] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2019] [Revised: 11/05/2019] [Accepted: 11/07/2019] [Indexed: 11/19/2022]
Abstract
An ultrasensitive microchip electrophoresis chemiluminescence (MCE-CL) assay platform based on separation assisted cascade signal amplification was developed for detection of trace biomolecules. In this work, the aptamer was used as a target probe to bind target molecule and triggering cascade signal amplification reaction. The horseradish peroxide labeled DNA (HRP-DNA) was used as signal probe, utilizing nucleic acid hybridization and exonuclease cutting technology realized ultrasensitive detection of biomolecules on the MCE-CL assay platform. Taking gamma interferon (IFN-γ) as a model analyte, the linear range for IFN-γ detection is 8.0 × 10-15-1.0 × 10-8 M, the detection limit is 1.6 fM, which is six orders magnitude lower than that of without signal amplification. The proposed method was successfully applied for the quantification of IFN-γ in human plasma samples. It was demonstrated that the MCE-CL assay platform was quick, sensitive, and highly selective. It may serve as a tool for clinical analysis of IFN-γ to assist in the diagnosis of disease.
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Affiliation(s)
- Xing Yang
- State Key Laboratory for the Chemistry and Molecular Engineering of Medicinal Resources, Key Laboratory of Ecology of Rare and Endangered Species and Environmental Protection, Guangxi Normal University, Guilin 541004, China
| | - Jingjin Zhao
- State Key Laboratory for the Chemistry and Molecular Engineering of Medicinal Resources, Key Laboratory of Ecology of Rare and Endangered Species and Environmental Protection, Guangxi Normal University, Guilin 541004, China.
| | - Shengyu Chen
- State Key Laboratory for the Chemistry and Molecular Engineering of Medicinal Resources, Key Laboratory of Ecology of Rare and Endangered Species and Environmental Protection, Guangxi Normal University, Guilin 541004, China
| | - Yong Huang
- State Key Laboratory for the Chemistry and Molecular Engineering of Medicinal Resources, Key Laboratory of Ecology of Rare and Endangered Species and Environmental Protection, Guangxi Normal University, Guilin 541004, China
| | - Shulin Zhaok
- State Key Laboratory for the Chemistry and Molecular Engineering of Medicinal Resources, Key Laboratory of Ecology of Rare and Endangered Species and Environmental Protection, Guangxi Normal University, Guilin 541004, China.
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10
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Zhang Y, Zhu L, He P, Zi F, Hu X, Wang Q. Sensitive assay of Escherichia coli in food samples by microchip capillary electrophoresis based on specific aptamer binding strategy. Talanta 2019; 197:284-290. [PMID: 30771937 DOI: 10.1016/j.talanta.2019.01.040] [Citation(s) in RCA: 44] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2018] [Revised: 01/07/2019] [Accepted: 01/09/2019] [Indexed: 11/30/2022]
Abstract
The rapid and cost-effective detection of bacteria is of great importance to ensuring food safety, preventing food poisoning. Herein, we developed a sensitive detection of Escherichia coli (E. coli) using bacteria-specific aptamer in conjunction with microchip capillary electrophoresis-coupled laser-induced fluorescence (MCE-LIF). Based on the differences between charge to mass ratios of free aptamer and bacteria-aptamer complex, which influence their electrophoretic mobilities, the separation of free aptamers and complex peaks by MCE could be achieved. Under optimal conditions, the sensitive detection of E. coli was achieved with a detection limit of 3.7 × 102 CFU mL-1, at a fast response of 135 s and a short detection length of 2.3 cm. The spiked recovery experiment showed that E. coli could be recovered from spiked drinking water and milk samples with recovery rates of 94.7% and 92.8%, respectively. This work demonstrates that the established detection strategy can be a useful tool for the detection and/or monitoring of E. coli in food and environment.
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Affiliation(s)
- Yan Zhang
- Faculty of Science, Kunming University of Science and Technology, Kunming 650500, China; School of Chemistry and Molecular Engineering, East China Normal University, 500 Dongchuan Road, Shanghai 200241, China
| | - Luqi Zhu
- School of Chemistry and Molecular Engineering, East China Normal University, 500 Dongchuan Road, Shanghai 200241, China
| | - Pingang He
- School of Chemistry and Molecular Engineering, East China Normal University, 500 Dongchuan Road, Shanghai 200241, China
| | - Futing Zi
- Faculty of Science, Kunming University of Science and Technology, Kunming 650500, China
| | - Xianzhi Hu
- Faculty of Science, Kunming University of Science and Technology, Kunming 650500, China.
| | - Qingjiang Wang
- School of Chemistry and Molecular Engineering, East China Normal University, 500 Dongchuan Road, Shanghai 200241, China.
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11
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Zhu L, Zhang Y, He P, Zhang Y, Wang Q. A multiplex PCR amplification strategy coupled with microchip electrophoresis for simultaneous and sensitive detection of three foodborne bacteria. J Chromatogr B Analyt Technol Biomed Life Sci 2018; 1093-1094:141-146. [DOI: 10.1016/j.jchromb.2018.06.057] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2018] [Revised: 06/27/2018] [Accepted: 06/29/2018] [Indexed: 01/11/2023]
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12
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Zhang Y, Zhang Y, Zhang Y, Zhu L, He P, Wang Q. Selective fluorescence labeling and sensitive determination of Staphylococcus aureus by microchip electrophoresis with a multiple-concentration approach. CHINESE CHEM LETT 2018. [DOI: 10.1016/j.cclet.2017.10.026] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
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13
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Zhang Y, Zhang Y, Zhu L, He P, Wang Q. A microchip electrophoretic assay for DNA methyltransferase activity based on methylation-sensitive endonuclease DpnⅡ. Electrophoresis 2018; 40:425-430. [DOI: 10.1002/elps.201800236] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2018] [Revised: 07/11/2018] [Accepted: 07/11/2018] [Indexed: 12/11/2022]
Affiliation(s)
- Yating Zhang
- School of Chemistry and Molecular Engineering; East China Normal University; Shanghai P. R. China
| | - Yan Zhang
- School of Chemistry and Molecular Engineering; East China Normal University; Shanghai P. R. China
| | - Luqi Zhu
- School of Chemistry and Molecular Engineering; East China Normal University; Shanghai P. R. China
| | - Pingang He
- School of Chemistry and Molecular Engineering; East China Normal University; Shanghai P. R. China
| | - Qingjiang Wang
- School of Chemistry and Molecular Engineering; East China Normal University; Shanghai P. R. China
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14
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Zhang D, Bi H, Liu B, Qiao L. Detection of Pathogenic Microorganisms by Microfluidics Based Analytical Methods. Anal Chem 2018; 90:5512-5520. [PMID: 29595252 DOI: 10.1021/acs.analchem.8b00399] [Citation(s) in RCA: 81] [Impact Index Per Article: 13.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Abstract
Microfluidics based biochemical analysis shows distinctive advantages for fast detection of pathogenic microorganisms. This Feature summarizes the progress in the past decade on microfluidic methods for purification and detection of pathogenic bacteria and viruses as well as their applications in food safety control, environmental monitoring, and clinical diagnosis.
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Affiliation(s)
- Dongxue Zhang
- Department of Chemistry, Shanghai Stomatological Hospital, and Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials , Fudan University , Shanghai , China 200433
| | - Hongyan Bi
- College of Food Science and Engineering , Shanghai Ocean University , Shanghai , China 201306
| | - Baohong Liu
- Department of Chemistry, Shanghai Stomatological Hospital, and Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials , Fudan University , Shanghai , China 200433
| | - Liang Qiao
- Department of Chemistry, Shanghai Stomatological Hospital, and Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials , Fudan University , Shanghai , China 200433
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15
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Wei K, Zhao J, Luo X, Qiu S, He F, Li S, Zhao S. An ultrasensitive microchip electrophoresis assay based on separation-assisted double cycling signal amplification strategy for microRNA detection in cell lysate. Analyst 2018; 143:1468-1474. [DOI: 10.1039/c7an02082a] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
An ultrasensitive microchip electrophoresis assay was developed for microRNA detection.
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Affiliation(s)
- Kaiji Wei
- Key Laboratory for the Chemistry and Molecular Engineering of Medicinal Resources
- Guangxi Normal University
- Guilin, 541004
- China
| | - Jingjin Zhao
- Key Laboratory for the Chemistry and Molecular Engineering of Medicinal Resources
- Guangxi Normal University
- Guilin, 541004
- China
| | - Xiaoshu Luo
- College of Electronic Engineering
- Guangxi Normal University
- Guilin
- China
| | - Senghui Qiu
- College of Electronic Engineering
- Guangxi Normal University
- Guilin
- China
| | - Fuyun He
- College of Electronic Engineering
- Guangxi Normal University
- Guilin
- China
| | - Shuting Li
- Key Laboratory for the Chemistry and Molecular Engineering of Medicinal Resources
- Guangxi Normal University
- Guilin, 541004
- China
| | - Shulin Zhao
- Key Laboratory for the Chemistry and Molecular Engineering of Medicinal Resources
- Guangxi Normal University
- Guilin, 541004
- China
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16
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Zhang Y, Luo F, Zhang Y, Zhu L, Li Y, Zhao S, He P, Wang Q. A sensitive assay based on specific aptamer binding for the detection of Salmonella enterica serovar Typhimurium in milk samples by microchip capillary electrophoresis. J Chromatogr A 2017; 1534:188-194. [PMID: 29289340 DOI: 10.1016/j.chroma.2017.12.054] [Citation(s) in RCA: 37] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2017] [Revised: 12/13/2017] [Accepted: 12/19/2017] [Indexed: 11/27/2022]
Abstract
The detection of Salmonella enterica serovar Typhimurium (S. Typhimurium) is very important for the prevention of food poisoning and other infectious diseases. Here we reported a simple and sensitive strategy to test S. Typhimurium by microchip capillary electrophoresis couple with laser-induced fluorescence (MCE-LIF) based on the specific reaction between the bacterium and corresponding aptamers. Based on the differences in charge to mass ratio between bacteria-aptamer complexes and free aptamers, a separation of the complexes and free aptamers could be obtained by MCE. The optimal parameters of the specific reaction including fluorescent dye concentration, Mg2+ concentration, incubation time, and pH of incubation solution were carefully investigated. Meanwhile, a non-specific DNA was exploited as a contrast for the detection of S. Typhimurium. Under the optimal conditions, a rapid separation of the bacteria-aptamer complex and free aptamers was achieved within 135 s with a limit of detection (S/N = 3) of 3.37 × 102 CFU mL-1. This method was applied for the detection of S. Typhimurium in fresh milk samples and a recovery rate of 95.8% was obtained. The experimental results indicated that the specific aptamers are of enough biostability and the established method could be used to analyze S. Typhimurium in foods.
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Affiliation(s)
- Yan Zhang
- School of Chemistry and Molecular Engineering, East China Normal University, 500 Dongchuan Road, Shanghai 200241, PR China
| | - Feifei Luo
- School of Chemistry and Molecular Engineering, East China Normal University, 500 Dongchuan Road, Shanghai 200241, PR China
| | - Yating Zhang
- School of Chemistry and Molecular Engineering, East China Normal University, 500 Dongchuan Road, Shanghai 200241, PR China
| | - Luqi Zhu
- School of Chemistry and Molecular Engineering, East China Normal University, 500 Dongchuan Road, Shanghai 200241, PR China
| | - Yi Li
- School of Chemistry and Molecular Engineering, East China Normal University, 500 Dongchuan Road, Shanghai 200241, PR China
| | - Shuangli Zhao
- School of Chemistry and Molecular Engineering, East China Normal University, 500 Dongchuan Road, Shanghai 200241, PR China
| | - Pingang He
- School of Chemistry and Molecular Engineering, East China Normal University, 500 Dongchuan Road, Shanghai 200241, PR China
| | - Qingjiang Wang
- School of Chemistry and Molecular Engineering, East China Normal University, 500 Dongchuan Road, Shanghai 200241, PR China.
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17
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Mustafa F, Hassan RYA, Andreescu S. Multifunctional Nanotechnology-Enabled Sensors for Rapid Capture and Detection of Pathogens. SENSORS (BASEL, SWITZERLAND) 2017; 17:E2121. [PMID: 28914769 PMCID: PMC5621351 DOI: 10.3390/s17092121] [Citation(s) in RCA: 51] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/12/2017] [Revised: 09/04/2017] [Accepted: 09/07/2017] [Indexed: 01/30/2023]
Abstract
Nanomaterial-based sensing approaches that incorporate different types of nanoparticles (NPs) and nanostructures in conjunction with natural or synthetic receptors as molecular recognition elements provide opportunities for the design of sensitive and selective assays for rapid detection of contaminants. This review summarizes recent advancements over the past ten years in the development of nanotechnology-enabled sensors and systems for capture and detection of pathogens. The most common types of nanostructures and NPs, their modification with receptor molecules and integration to produce viable sensing systems with biorecognition, amplification and signal readout are discussed. Examples of all-in-one systems that combine multifunctional properties for capture, separation, inactivation and detection are also provided. Current trends in the development of low-cost instrumentation for rapid assessment of food contamination are discussed as well as challenges for practical implementation and directions for future research.
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Affiliation(s)
- Fatima Mustafa
- Department of Chemistry and Biomolecular Science, Clarkson University, Potsdam, NY 13699-5810, USA.
| | - Rabeay Y A Hassan
- Applied Organic Chemistry Department, National Research Centre (NRC), El Bohouth st., Dokki, 12622-Giza, Egypt.
| | - Silvana Andreescu
- Department of Chemistry and Biomolecular Science, Clarkson University, Potsdam, NY 13699-5810, USA.
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18
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Qin Y, Zhang L, Li S, Zhao J, Huang Y, Zhao S, Liu YM. A microchip electrophoresis-based fluorescence signal amplification strategy for highly sensitive detection of biomolecules. Chem Commun (Camb) 2017; 53:455-458. [PMID: 27966686 DOI: 10.1039/c6cc08911a] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
We have developed a microchip electrophoresis (MCE)-based fluorescence signal amplification strategy as a universal MCE method for the detection of trace biomolecules. This strategy exhibits high sensitivity and specificity for target molecules, and has been applied for the detection of interferon-gamma (IFN-γ) in human plasma with satisfactory results.
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Affiliation(s)
- Yingfeng Qin
- State Key Laboratory for the Chemistry and Molecular Engineering of Medicinal Resources, Guangxi Normal University, Guilin 541004, China.
| | - Liangliang Zhang
- State Key Laboratory for the Chemistry and Molecular Engineering of Medicinal Resources, Guangxi Normal University, Guilin 541004, China.
| | - Shuting Li
- State Key Laboratory for the Chemistry and Molecular Engineering of Medicinal Resources, Guangxi Normal University, Guilin 541004, China.
| | - Jingjin Zhao
- State Key Laboratory for the Chemistry and Molecular Engineering of Medicinal Resources, Guangxi Normal University, Guilin 541004, China.
| | - Yong Huang
- State Key Laboratory for the Chemistry and Molecular Engineering of Medicinal Resources, Guangxi Normal University, Guilin 541004, China.
| | - Shulin Zhao
- State Key Laboratory for the Chemistry and Molecular Engineering of Medicinal Resources, Guangxi Normal University, Guilin 541004, China.
| | - Yi-Ming Liu
- Department of Chemistry and Biochemistry, Jackson State University, 1400 Lynch St., Jackson, MS 39217, USA
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19
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Wuethrich A, Quirino JP. Sensitivity enhancing injection from a sample reservoir and channel interface in microchip electrophoresis. J Sep Sci 2017; 40:927-932. [DOI: 10.1002/jssc.201601064] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2016] [Revised: 11/08/2016] [Accepted: 11/28/2016] [Indexed: 11/09/2022]
Affiliation(s)
- Alain Wuethrich
- Australian Centre for Research on Separation Science (ACROSS) School of Physical Sciences‐Chemistry University of Tasmania Hobart TAS 7001 Australia
| | - Joselito P. Quirino
- Australian Centre for Research on Separation Science (ACROSS) School of Physical Sciences‐Chemistry University of Tasmania Hobart TAS 7001 Australia
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20
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Thang LY, See HH, Quirino JP. Multistacking from Two Sample Streams in Nonaqueous Microchip Electrophoresis. Anal Chem 2016; 88:9915-9919. [DOI: 10.1021/acs.analchem.6b02790] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Affiliation(s)
- Lee Yien Thang
- Centre
for Sustainable Nanomaterials, IbnuSina Institute for Scientific and
Industrial Research, UniversitiTeknologi Malaysia, 81310 UTM Johor Bahru, Johor, Malaysia
- Department
of Chemistry, Faculty of Science, UniversitiTeknologi Malaysia, 81310 UTM Johor Bahru, Johor, Malaysia
| | - Hong Heng See
- Centre
for Sustainable Nanomaterials, IbnuSina Institute for Scientific and
Industrial Research, UniversitiTeknologi Malaysia, 81310 UTM Johor Bahru, Johor, Malaysia
- Department
of Chemistry, Faculty of Science, UniversitiTeknologi Malaysia, 81310 UTM Johor Bahru, Johor, Malaysia
| | - Joselito P. Quirino
- Centre
for Sustainable Nanomaterials, IbnuSina Institute for Scientific and
Industrial Research, UniversitiTeknologi Malaysia, 81310 UTM Johor Bahru, Johor, Malaysia
- Department
of Chemistry, Faculty of Science, UniversitiTeknologi Malaysia, 81310 UTM Johor Bahru, Johor, Malaysia
- Australian
Centre for Research on Separation Science, School of Physical Sciences
− Chemistry, University of Tasmania, 7001 Hobart, Tasmania, Australia
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21
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Wu M, Chen W, Wang G, He P, Wang Q. Analysis of acrylamide in food products by microchip electrophoresis with on-line multiple-preconcentration techniques. Food Chem 2016; 209:154-61. [DOI: 10.1016/j.foodchem.2016.04.065] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2015] [Revised: 04/04/2016] [Accepted: 04/18/2016] [Indexed: 12/16/2022]
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22
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Sensitive determination of neurotransmitters in urine by microchip electrophoresis with multiple-concentration approaches combining field-amplified and reversed-field stacking. J Chromatogr B Analyt Technol Biomed Life Sci 2016; 1025:33-9. [DOI: 10.1016/j.jchromb.2016.04.054] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2016] [Revised: 04/25/2016] [Accepted: 04/30/2016] [Indexed: 11/21/2022]
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23
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Kartsova LA, Bessonova EA, Kolobova EA. Ionic Liquids as Modifiers of Chromatographic and Electrophoretic Systems. JOURNAL OF ANALYTICAL CHEMISTRY 2016. [DOI: 10.1134/s1061934816020064] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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24
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Xu Y, Ling BZ, Zhu WJ, Yao D, Zhang L, Wang Y, Yan C. Development of fully automated quantitative capillary electrophoresis with high accuracy and repeatability. Biomed Chromatogr 2015; 30:390-5. [DOI: 10.1002/bmc.3560] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2015] [Revised: 06/22/2015] [Accepted: 07/06/2015] [Indexed: 11/05/2022]
Affiliation(s)
- Yuan Xu
- School of Pharmacy; Shanghai Jiao Tong University; Shanghai 200240 China
| | - Bang-zan Ling
- School of Pharmacy; Shanghai Jiao Tong University; Shanghai 200240 China
| | - Wen-jun Zhu
- School of Pharmacy; Shanghai Jiao Tong University; Shanghai 200240 China
- Unimicro (Shanghai) Technologies; Pudong Shanghai 201203 China
| | - Dong Yao
- Unimicro (Shanghai) Technologies; Pudong Shanghai 201203 China
| | - Lin Zhang
- School of Pharmacy; Shanghai Jiao Tong University; Shanghai 200240 China
- Unimicro (Shanghai) Technologies; Pudong Shanghai 201203 China
| | - Yan Wang
- School of Pharmacy; Shanghai Jiao Tong University; Shanghai 200240 China
| | - Chao Yan
- School of Pharmacy; Shanghai Jiao Tong University; Shanghai 200240 China
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25
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Wu M, Gao F, Zhang Y, Wang G, Wang Q, Li H. Sensitive analysis of antibiotics via hyphenation of field-amplified sample stacking with reversed-field stacking in microchip micellar electrokinetic chromatography. J Pharm Biomed Anal 2015; 103:91-8. [DOI: 10.1016/j.jpba.2014.11.004] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2014] [Revised: 10/30/2014] [Accepted: 11/02/2014] [Indexed: 12/14/2022]
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26
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Sensitive analysis of amino acids and vitamin B3 in functional drinks via field-amplified stacking with reversed-field stacking in microchip electrophoresis. Talanta 2015; 131:624-31. [DOI: 10.1016/j.talanta.2014.08.051] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2014] [Revised: 08/16/2014] [Accepted: 08/18/2014] [Indexed: 01/07/2023]
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27
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Progress in stacking techniques based on field amplification of capillary electrophoresis. Anal Bioanal Chem 2014; 406:6129-50. [DOI: 10.1007/s00216-014-8062-7] [Citation(s) in RCA: 48] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2014] [Revised: 07/21/2014] [Accepted: 07/22/2014] [Indexed: 02/07/2023]
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28
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Li Z, Li D, Zhang D, Yamaguchi Y. Determination and quantification of Escherichia coli by capillary electrophoresis. Analyst 2014; 139:6113-7. [DOI: 10.1039/c4an01649a] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Capillary electrophoresis (CE) is widely employed for the separation of nucleic acids or protein, but it is rarely applied in the quantification ofEscherichia coli(E. coli).
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Affiliation(s)
- Zhenqing Li
- Engineering Research Center of Optical Instrument and System
- Ministry of Education
- Shanghai Key Lab of Modern Optical System
- University of Shanghai for Science and Technology
- Shanghai 200093, China
| | - De Li
- Engineering Research Center of Optical Instrument and System
- Ministry of Education
- Shanghai Key Lab of Modern Optical System
- University of Shanghai for Science and Technology
- Shanghai 200093, China
| | - Dawei Zhang
- Engineering Research Center of Optical Instrument and System
- Ministry of Education
- Shanghai Key Lab of Modern Optical System
- University of Shanghai for Science and Technology
- Shanghai 200093, China
| | - Yoshinori Yamaguchi
- Photonics and Bio-medical Research Institute
- Department of Physics Faculty of Science
- East China University of Science and Technology
- Shanghai 200237, China
- Department of Applied Physics
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29
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Li X, Ju Y, Xu Y, Wang W, Dong Y, Ma Y, Chen X. On-line capillary electrophoresis enrichment by combining chitosan trapping with surfactant assisted sample stacking for the ultratrace determination of organic acids in Plateau alfalfa roots. Anal Chim Acta 2013; 789:100-6. [DOI: 10.1016/j.aca.2013.06.031] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2013] [Revised: 06/20/2013] [Accepted: 06/22/2013] [Indexed: 10/26/2022]
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30
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Breadmore MC, Shallan AI, Rabanes HR, Gstoettenmayr D, Abdul Keyon AS, Gaspar A, Dawod M, Quirino JP. Recent advances in enhancing the sensitivity of electrophoresis and electrochromatography in capillaries and microchips (2010-2012). Electrophoresis 2013; 34:29-54. [PMID: 23161056 DOI: 10.1002/elps.201200396] [Citation(s) in RCA: 124] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2012] [Revised: 09/03/2012] [Accepted: 09/04/2012] [Indexed: 12/21/2022]
Abstract
CE has been alive for over two decades now, yet its sensitivity is still regarded as being inferior to that of more traditional methods of separation such as HPLC. As such, it is unsurprising that overcoming this issue still generates much scientific interest. This review continues to update this series of reviews, first published in Electrophoresis in 2007, with updates published in 2009 and 2011 and covers material published through to June 2012. It includes developments in the field of stacking, covering all methods from field amplified sample stacking and large volume sample stacking, through to isotachophoresis, dynamic pH junction and sweeping. Attention is also given to online or inline extraction methods that have been used for electrophoresis.
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Affiliation(s)
- Michael C Breadmore
- Australian Centre for Research on Separation Science, School of Chemistry, University of Tasmania, Hobart, Tasmania, Australia.
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31
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Ge S, Tang W, Han R, Zhu Y, Wang Q, He P, Fang Y. Sensitive analysis of aminoglycoside antibiotics via hyphenation of transient moving substitution boundary with field-enhanced sample injection in capillary electrophoresis. J Chromatogr A 2013; 1295:128-35. [DOI: 10.1016/j.chroma.2013.04.049] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2013] [Revised: 03/31/2013] [Accepted: 04/16/2013] [Indexed: 10/26/2022]
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32
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Zeng H, Weng Y, Ikeda S, Nakagawa Y, Nakajima H, Uchiyama K. Accurate and Highly Reproducible Picoliter Injection System for Capillary Electrophoresis. Anal Chem 2012; 84:10537-42. [DOI: 10.1021/ac302353q] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Affiliation(s)
- Hulie Zeng
- Department of Applied Chemistry, Graduate School of
Urban Environmental Sciences, Tokyo Metropolitan University, Minamiohsawa, Hachioji, Tokyo 192-0397, Japan
| | - Ying Weng
- Department of Applied Chemistry, Graduate School of
Urban Environmental Sciences, Tokyo Metropolitan University, Minamiohsawa, Hachioji, Tokyo 192-0397, Japan
| | - Saori Ikeda
- Department of Applied Chemistry, Graduate School of
Urban Environmental Sciences, Tokyo Metropolitan University, Minamiohsawa, Hachioji, Tokyo 192-0397, Japan
| | - Yuri Nakagawa
- Department of Applied Chemistry, Graduate School of
Urban Environmental Sciences, Tokyo Metropolitan University, Minamiohsawa, Hachioji, Tokyo 192-0397, Japan
| | - Hizuru Nakajima
- Department of Applied Chemistry, Graduate School of
Urban Environmental Sciences, Tokyo Metropolitan University, Minamiohsawa, Hachioji, Tokyo 192-0397, Japan
| | - Katsumi Uchiyama
- Department of Applied Chemistry, Graduate School of
Urban Environmental Sciences, Tokyo Metropolitan University, Minamiohsawa, Hachioji, Tokyo 192-0397, Japan
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Šlampová A, Malá Z, Pantůčková P, Gebauer P, Boček P. Contemporary sample stacking in analytical electrophoresis. Electrophoresis 2012; 34:3-18. [PMID: 23161176 DOI: 10.1002/elps.201200346] [Citation(s) in RCA: 63] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2012] [Revised: 07/20/2012] [Accepted: 07/20/2012] [Indexed: 12/29/2022]
Abstract
Sample stacking is a term denoting a multifarious class of methods and their names that are used daily in CE for online concentration of diluted samples to enhance separation efficiency and sensitivity of analyses. The essence of these methods is that analytes present at low concentrations in a large injected sample zone are concentrated into a short and sharp zone (stack) in the separation capillary. Then the stacked analytes are separated and detected. Regardless of the diversity of the stacking electromigration methods, one can distinguish four main principles that form the bases of nearly all of them: (i) Kohlrausch adjustment of concentrations, (ii) pH step, (iii) micellar methods, and (iv) transient ITP. This contribution is a continuation of our previous reviews on the topic and brings an overview of papers published during 2010-2012 and relevant to the mentioned principles (except the last one which is covered by another review in this issue).
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Affiliation(s)
- Andrea Šlampová
- Institute of Analytical Chemistry of the Academy of Sciences of the Czech Republic, Brno, Czech Republic
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34
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Rabanes HR, Aranas AT, Benbow NL, Quirino JP. Synergistic effect of field enhanced sample injection on micelle to solvent stacking in capillary electrophoresis. J Chromatogr A 2012; 1267:74-9. [DOI: 10.1016/j.chroma.2012.08.073] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2012] [Revised: 08/22/2012] [Accepted: 08/24/2012] [Indexed: 12/28/2022]
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35
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Wen Y, Li J, Ma J, Chen L. Recent advances in enrichment techniques for trace analysis in capillary electrophoresis. Electrophoresis 2012; 33:2933-52. [PMID: 23019127 DOI: 10.1002/elps.201200240] [Citation(s) in RCA: 83] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2012] [Revised: 06/06/2012] [Accepted: 06/28/2012] [Indexed: 01/25/2023]
Abstract
CE is gaining great popularity as a well-established separation technique for many fields such as pharmaceutical research, clinical application, environmental monitoring, and food analysis, owing to its high resolving power, rapidity, and small amount of samples and reagents required. However, the sensitivity in CE analysis is still considered as being inferior to that in HPLC analysis. Diverse enrichment methods and techniques have been increasingly developed for overcoming this issue. In this review, we summarize the recent advances in enrichment techniques containing off-line preconcentration (sample preparation) and on-line concentration (sample stacking) to enhancing sensitivity in CE for trace analysis over the last 5 years. Some relatively new cleanup and preconcentration methods involving the use of dispersive liquid-liquid microextraction, supercritical fluid extraction, matrix solid-phase dispersion, etc., and the continued use and improvement of conventional SPE, have been comprehensively reviewed and proved effective preconcentration alternatives for liquid, semisolid, and solid samples. As for CE on-line stacking, we give an overview of field amplication, sweeping, pH regulation, and transient isotachophoresis, and the coupling of multiple modes. Moreover, some limitations and comparisons related to such methods/techniques are also discussed. Finally, the combined use of various enrichment techniques and some significant attempts are proposed to further promote analytical merits in CE.
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Affiliation(s)
- Yingying Wen
- Key Laboratory of Coastal Zone Environmental Processes, Yantai Institute of Coastal Zone Research-YIC, Chinese Academy of Sciences-CAS, Shandong Provincial Key Laboratory of Coastal Zone Environmental Processes, YICCAS, Yantai, P. R. China
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