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Kumarajith TM, Powell SM, Breadmore MC. Isotachophoretic quantification of total viable bacteria on meat and surfaces. Anal Chim Acta 2024; 1296:342253. [PMID: 38401922 DOI: 10.1016/j.aca.2024.342253] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2023] [Revised: 12/18/2023] [Accepted: 01/13/2024] [Indexed: 02/26/2024]
Abstract
BACKGROUND The quantification of microbes, particularly live bacteria, is of utmost importance in assessing the quality of meat products. In the context of meat processing facilities, prompt identification and removal of contaminated carcasses or surfaces is crucial to ensuring the continuous production of safe meat for human consumption. The plate count method and other traditional detection methods are not only labour-intensive but also time-consuming taking 24-48 h. RESULTS In this report, we present a novel isotachophoretic quantification method utilizing two nucleic acid stains, SYTO9 and propionic iodide, for the detection of total viable bacteria. The study employed E. coli M23 bacteria as a model organism, with an analysis time of only 30 min. The method demonstrated a limit of detection (LOD) of 184 CFU mL-1 and 14 cells mL-1 for total viable count and total cell count, respectively. Furthermore, this new approach is capable of detecting the microbial quality standard limits for food contacting surfaces (10 CFU cm-2) and meat (1.99 × 104 CFU cm-2) by swabbing an area of 10 × 10 cm2. SIGNIFICANCE In contrast to the culture-based methods usually employed in food processing facilities, this isotachophoretic technique enables easy and rapid detection (<30 min) of microorganisms, facilitating crucial decision-making essential for maintaining product quality and safety.
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Affiliation(s)
- Thisara M Kumarajith
- Australia Centre for Research on Separation Science, Chemistry, School of Natural Sciences, Tasmania, Australia; Tasmanian Institute of Agriculture, Tasmania, Australia
| | | | - Michael C Breadmore
- Australia Centre for Research on Separation Science, Chemistry, School of Natural Sciences, Tasmania, Australia.
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Krebs F, Zagst H, Stein M, Ratih R, Minkner R, Olabi M, Hartung S, Scheller C, Lapizco-Encinas BH, Sänger-van de Griend C, García CD, Wätzig H. Strategies for capillary electrophoresis: Method development and validation for pharmaceutical and biological applications-Updated and completely revised edition. Electrophoresis 2023; 44:1279-1341. [PMID: 37537327 DOI: 10.1002/elps.202300158] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2023] [Accepted: 07/19/2023] [Indexed: 08/05/2023]
Abstract
This review is in support of the development of selective, precise, fast, and validated capillary electrophoresis (CE) methods. It follows up a similar article from 1998, Wätzig H, Degenhardt M, Kunkel A. "Strategies for capillary electrophoresis: method development and validation for pharmaceutical and biological applications," pointing out which fundamentals are still valid and at the same time showing the enormous achievements in the last 25 years. The structures of both reviews are widely similar, in order to facilitate their simultaneous use. Focusing on pharmaceutical and biological applications, the successful use of CE is now demonstrated by more than 600 carefully selected references. Many of those are recent reviews; therefore, a significant overview about the field is provided. There are extra sections about sample pretreatment related to CE and microchip CE, and a completely revised section about method development for protein analytes and biomolecules in general. The general strategies for method development are summed up with regard to selectivity, efficiency, precision, analysis time, limit of detection, sample pretreatment requirements, and validation.
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Affiliation(s)
- Finja Krebs
- Institute, of Medicinal and Pharmaceutical Chemistry, Technische Universität Braunschweig, Braunschweig, Lower Saxony, Germany
| | - Holger Zagst
- Institute, of Medicinal and Pharmaceutical Chemistry, Technische Universität Braunschweig, Braunschweig, Lower Saxony, Germany
| | - Matthias Stein
- Institute, of Medicinal and Pharmaceutical Chemistry, Technische Universität Braunschweig, Braunschweig, Lower Saxony, Germany
| | - Ratih Ratih
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, University of Surabaya, Surabaya, East Java, Indonesia
| | - Robert Minkner
- Institute, of Medicinal and Pharmaceutical Chemistry, Technische Universität Braunschweig, Braunschweig, Lower Saxony, Germany
| | - Mais Olabi
- Institute, of Medicinal and Pharmaceutical Chemistry, Technische Universität Braunschweig, Braunschweig, Lower Saxony, Germany
| | - Sophie Hartung
- Institute, of Medicinal and Pharmaceutical Chemistry, Technische Universität Braunschweig, Braunschweig, Lower Saxony, Germany
| | - Christin Scheller
- Institute, of Medicinal and Pharmaceutical Chemistry, Technische Universität Braunschweig, Braunschweig, Lower Saxony, Germany
| | - Blanca H Lapizco-Encinas
- Department of Biomedical Engineering, Kate Gleason College of Engineering, Rochester Institute of Technology, Rochester, New York, USA
| | - Cari Sänger-van de Griend
- Kantisto BV, Baarn, The Netherlands
- Department of Medicinal Chemistry, Faculty of Pharmacy, Uppsala Universitet, Uppsala, Sweden
| | - Carlos D García
- Department of Chemistry, Clemson University, Clemson, South Carolina, USA
| | - Hermann Wätzig
- Institute, of Medicinal and Pharmaceutical Chemistry, Technische Universität Braunschweig, Braunschweig, Lower Saxony, Germany
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Xiang Y, Song F, Jiang L, Liu Z, Tu Y. A novel fluorescent nano carbon quantum dots derived from Lactarius hatsudake for high selective vitamin B12 detection. J AOAC Int 2022; 105:1350-1359. [PMID: 35244160 DOI: 10.1093/jaoacint/qsac033] [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: 12/19/2021] [Revised: 01/27/2022] [Accepted: 02/24/2022] [Indexed: 11/13/2022]
Abstract
BACKGROUND (OBJECTIVE) A large edible fungus Lactarius hatsudake (Lh) was used as carbon source to produce fluorescent carbon dots (CDs) with high quantum yield and high photostability by one-step hydrothermal method. METHODS The structure and optical properties of Lh-CDs were characterized by XRD, XPS, FTIR, and UV-Vis, and the stability of Lh-CDs was studied. The maximum excitation wavelength and emission wavelength of Lh-CDs were 324 and 408 nm, respectively, and the average fluorescence lifetime was 2.29 ns. RESULTS The linear range is 0∼20 μM (R2=0.9972) with detection limit of 36.9 nM. HIGHLIGHTS At the same time, the mechanism of fluorescence quenching was internal filtration effect. CONCLUSION It showed that Lh-CDS had good selectivity, high sensitivity, and good anti-interference ability to VB12, which provided a new detection method for VB12.
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Affiliation(s)
- Yingying Xiang
- Department of Stomatology, Yan'an Hospital Affiliated to Kunming Medical University, Kunming, 650031 China
| | - Fei Song
- Department of Minimally Invasive Intervention, the Third Affiliated Hospital of Kunming Medical University, Kunming, 650118 China
| | - Lei Jiang
- School of Chemistry and Chemical Engineering, Kunming University, 650214 China
| | - Ze Liu
- School of Chemistry and Chemical Engineering, Kunming University, 650214 China
| | - Yujiao Tu
- School of Chemistry and Chemical Engineering, Kunming University, 650214 China
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4
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Advances in aggregation induced emission (AIE) materials in biosensing and imaging of bacteria. PROGRESS IN MOLECULAR BIOLOGY AND TRANSLATIONAL SCIENCE 2021. [PMID: 34749976 PMCID: PMC8292011 DOI: 10.1016/bs.pmbts.2021.06.015] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 11/22/2023]
Abstract
With their ubiquitous nature, bacteria have had a significant impact on human health and evolution. Though as commensals residing in/on our bodies several bacterial communities support our health in many ways, bacteria remain one of the major causes of infectious diseases that plague the human world. Adding to this, emergence of antibiotic resistant strains limited the use of available antibiotics. The current available techniques to prevent and control such infections remain insufficient. This has been proven during one of greatest pandemic of our generation, COVID-19. It has been observed that bacterial coinfections were predominantly observed in COVID-19 patients, despite antibiotic treatment. Such higher rates of coinfections in critical patients even after antibiotic treatment is a matter of concern. Owing to many reasons across the world drug resistance in bacteria is posing a major problem i. According to Center for Disease control (CDC) antibiotic report threats (AR), 2019 more than 2.8 million antibiotic resistant cases were reported, and more than 35,000 were dead among them in USA alone. In both normal and pandemic conditions, failure of identifying infectious agent has played a major role. This strongly prompts the need to improve upon the existing techniques to not just effective identification of an unknown bacterium, but also to discriminate normal Vs drug resistant strains. New techniques based on Aggregation Induced Emission (AIE) are not only simple and rapid but also have high accuracy to visualize infection and differentiate many strains of bacteria based on biomolecular variations which has been discussed in this chapter.
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Gu M, Zeng Z, Xing M, Xiong Y, Deng Z, Chen S, Wang L. The Biological Applications of Two Aggregation-Induced Emission Luminogens. Biotechnol J 2019; 14:e1900212. [PMID: 31469239 DOI: 10.1002/biot.201900212] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2019] [Revised: 07/16/2019] [Indexed: 02/06/2023]
Abstract
Fluorescence imaging, as a commonly used scientific tool, is widely applied in various biomedical and material structures through visualization technology. Highly selective and sensitive luminescent biological probes, as well as those with good water solubility, are urgently needed for biomedical research. In contrast to the traditional aggregation-caused quenching of fluorescence, in the unique phenomenon of aggregation-induced emission (AIE), the individual luminogens have extremely weak or no emissivity because they each have free intramolecular motion; however, when they form aggregates, these components immediately "light up". Since the discovery of "turn-on" mechanism, researchers have been studying and applying AIE in a variety of fields to develop more sensitive, selective, and efficient strategies for the AIE dyes. There are numerous advantages to the use of AIE-based methods, including low background interference, strong contrast, high performance in intracellular imaging, and the ability for long-term monitoring in vivo. In this review, two typical examples of AIEgens, TPE-Cy and TPE-Ph-In, are described, including their structure properties and applications. Recent progress in the biological applications is mainly focused on. Undoubtedly, in the near future, an increasing number of encouraging and practical ideas will promote the development of more AIEgens for broad use in biomedical applications.
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Affiliation(s)
- Meijia Gu
- Key Laboratory of Combinatorial Biosynthesis and Drug Discovery, Ministry of Education, School of Pharmaceutical Sciences, Wuhan University, 430071, Wuhan, China.,Taihe Hospital, Hubei University of Medicine, Shiyan, 442000, Hubei, China
| | - Zixuan Zeng
- Key Laboratory of Combinatorial Biosynthesis and Drug Discovery, Ministry of Education, School of Pharmaceutical Sciences, Wuhan University, 430071, Wuhan, China
| | - Mai Xing
- Key Laboratory of Combinatorial Biosynthesis and Drug Discovery, Ministry of Education, School of Pharmaceutical Sciences, Wuhan University, 430071, Wuhan, China
| | - Yige Xiong
- Key Laboratory of Combinatorial Biosynthesis and Drug Discovery, Ministry of Education, School of Pharmaceutical Sciences, Wuhan University, 430071, Wuhan, China
| | - Zixin Deng
- Key Laboratory of Combinatorial Biosynthesis and Drug Discovery, Ministry of Education, School of Pharmaceutical Sciences, Wuhan University, 430071, Wuhan, China
| | - Shi Chen
- Key Laboratory of Combinatorial Biosynthesis and Drug Discovery, Ministry of Education, School of Pharmaceutical Sciences, Wuhan University, 430071, Wuhan, China.,Taihe Hospital, Hubei University of Medicine, Shiyan, 442000, Hubei, China
| | - Lianrong Wang
- Key Laboratory of Combinatorial Biosynthesis and Drug Discovery, Ministry of Education, School of Pharmaceutical Sciences, Wuhan University, 430071, Wuhan, China.,Taihe Hospital, Hubei University of Medicine, Shiyan, 442000, Hubei, China
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Chylewska A, Ogryzek M, Makowski M. Modern Approach to Medical Diagnostics - the Use of Separation Techniques in Microorganisms Detection. Curr Med Chem 2019; 26:121-165. [DOI: 10.2174/0929867324666171023164813] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2016] [Revised: 04/20/2017] [Accepted: 05/20/2016] [Indexed: 11/22/2022]
Abstract
Background:Analytical chemistry and biotechnology as an interdisciplinary fields of science have been developed during many years and are experiencing significant growth, to cover a wide range of microorganisms separation techniques and methods, utilized for medical therapeutic and diagnostic purposes. Currently scientific reports contribute by introducing electrophoretical and immunological methods and formation of devices applied in food protection (avoiding epidemiological diseases) and healthcare (safety ensuring in hospitals).Methods:Electrophoretic as well as nucleic-acid-based or specific immunological methods have contributed tremendously to the advance of analyses in recent three decades, particularly in relation to bacteria, viruses and fungi identifications, especially in medical in vitro diagnostics, as well as in environmental or food protection.Results:The paper presents the pathogen detection competitiveness of these methods against conventional ones, which are still too time consuming and also labor intensive. The review is presented in several parts following the current trends in improved pathogens separation and detection methods and their subsequent use in medical diagnosis.Discussion:Part one, consists of elemental knowledge about microorganisms as an introduction to their characterization: descriptions of divisions, sizes, membranes (cells) components. Second section includes the development, new technological and practical solution descriptions used in electrophoretical procedures during microbes analyses, with special attention paid to bio-samples analyses like blood, urine, lymph or wastewater. Third part covers biomolecular areas that have created a basis needed to identify the progress, limitations and challenges of nucleic-acid-based and immunological techniques discussed to emphasize the advantages of new separative techniques in selective fractionating of microorganisms.
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Affiliation(s)
- Agnieszka Chylewska
- Laboratory of Intermolecular Interactions, Faculty of Chemistry, University of Gdansk, Wita Stwosza 63, 80- 308 Gdansk, Poland
| | - Małgorzata Ogryzek
- Laboratory of Intermolecular Interactions, Faculty of Chemistry, University of Gdansk, Wita Stwosza 63, 80- 308 Gdansk, Poland
| | - Mariusz Makowski
- Laboratory of Intermolecular Interactions, Faculty of Chemistry, University of Gdansk, Wita Stwosza 63, 80- 308 Gdansk, Poland
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7
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Gao H, Zhang X, Chen C, Li K, Ding D. Unity Makes Strength: How Aggregation-Induced Emission Luminogens Advance the Biomedical Field. ACTA ACUST UNITED AC 2018. [DOI: 10.1002/adbi.201800074] [Citation(s) in RCA: 101] [Impact Index Per Article: 16.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Heqi Gao
- State Key Laboratory of Medicinal Chemical Biology; Key Laboratory of Bioactive Materials; Ministry of Education; College of Life Sciences; Nankai University; Tianjin 300071 China
| | - Xiaoyan Zhang
- State Key Laboratory of Medicinal Chemical Biology; Key Laboratory of Bioactive Materials; Ministry of Education; College of Life Sciences; Nankai University; Tianjin 300071 China
| | - Chao Chen
- State Key Laboratory of Medicinal Chemical Biology; Key Laboratory of Bioactive Materials; Ministry of Education; College of Life Sciences; Nankai University; Tianjin 300071 China
| | - Kai Li
- Institute of Materials Research & Engineering; A*STAR; Singapore 138634 Singapore
- Department of Biomedical Engineering; Southern University of Science and Technology; Shenzhen Guangdong 510855 China
| | - Dan Ding
- State Key Laboratory of Medicinal Chemical Biology; Key Laboratory of Bioactive Materials; Ministry of Education; College of Life Sciences; Nankai University; Tianjin 300071 China
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8
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Wang B, Wei C. Stimuli-responsive fluorescence switching of cyanostilbene derivatives: ultrasensitive water, acidochromism and mechanochromism. RSC Adv 2018; 8:22806-22812. [PMID: 35539735 PMCID: PMC9081381 DOI: 10.1039/c8ra03598a] [Citation(s) in RCA: 30] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2018] [Accepted: 06/13/2018] [Indexed: 11/23/2022] Open
Abstract
A novel donor–π–acceptor structure stimuli-responsive fluorescent material of (Z)-2-(4′-(diphenylamino)-[1,1′-biphenyl]-4-yl)-3-(pyridin-2-yl)acrylonitrile (oN-TPA) was designed and synthesized, with the cyano-group and pyridine as the acceptors (A) and triphenylamine as the donor (D). oN-TPA exhibits an obvious solvatochromic effect and the excited state is confirmed to be a hybridized local and charge-transfer (HLCT) state that simultaneously possesses the locally-excited (LE) state and charge transfer (CT) state characters. The LE state ensures relatively high fluorescence efficiency while the CT state provides multi-stimuli responsive fluorescence behaviors because it is easily tuned by the surrounding environment. Firstly, oN-TPA exhibits “on–off–on” fluorescence properties in the mixture of water/tetrahydrofuran (THF) with the increasing water content. For the “on–off” part, a good linear relationship between fluorescence intensity and water fraction is achieved, which is ascribed to the synergistic effect of protons in water and intramolecular charge-transfer (ICT) effect depending on solvent polarity. The “off–on” part demonstrates the aggregation-induced enhanced emission (AIEE) character of oN-TPA. Secondly, oN-TPA can be used as a protonic acid sensor to detect trifluoroacetic acid (TFA) in solvent and HCl vapour in the solid state due to the binding of the proton to the pyridine group. Finally, oN-TPA presents remarkable and reversible mechanochromic fluorescence switching between 552 nm and 642 nm (90 nm red-shift) during the pressurizing–depressurizing process. This work not only comprehensively demonstrates the stimuli-responsive fluorescence behaviors of oN-TPA, but also provides a D–π–A structure fluorescent material possessing potential applications in detection and sensing with remarkable fluorescence changes. A donor–acceptor dye exhibits high luminescence efficiency and high-contrast piezochromism with HLCT properties. The doped films show the ratiometric photo-luminescence peak shift under high pressure, interestingly, making them piezo-sensors.![]()
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Affiliation(s)
- Bin Wang
- Key Laboratory of Chemical Biology and Molecular Engineering of Ministry of Education
- Institute of Molecular Science
- Shanxi University
- Taiyuan 030006
- PR China
| | - ChunYing Wei
- Key Laboratory of Chemical Biology and Molecular Engineering of Ministry of Education
- Institute of Molecular Science
- Shanxi University
- Taiyuan 030006
- PR China
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9
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Horká M, Karásek P, Roth M, Růžička F. Pre-concentration and separation of bacteria by volume coupling electrophoresis on supercritical water-etched fused silica capillary with two segments of different internal diameters and inner surface roughnesses. Anal Bioanal Chem 2017; 410:167-175. [DOI: 10.1007/s00216-017-0706-y] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2017] [Revised: 10/10/2017] [Accepted: 10/11/2017] [Indexed: 12/21/2022]
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10
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Baron D, Cacho C, Petr J. Electrokinetic preconcentration of magnetite core – carboxylic shell nanoparticles by capillary electrophoresis. J Chromatogr A 2017; 1499:217-221. [DOI: 10.1016/j.chroma.2017.03.079] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2016] [Revised: 03/27/2017] [Accepted: 03/28/2017] [Indexed: 12/18/2022]
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11
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Hua XW, Bao YW, Wang HY, Chen Z, Wu FG. Bacteria-derived fluorescent carbon dots for microbial live/dead differentiation. NANOSCALE 2017; 9:2150-2161. [PMID: 27874123 DOI: 10.1039/c6nr06558a] [Citation(s) in RCA: 98] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
Abstract
Microbial viability assessment plays a key role in many areas such as pathogen detection, infectious disease treatment and antimicrobial drug development. Many conventional viability dyes (such as propidium iodide, PI) used for differentiating live/dead microbes suffer from notable cytotoxicity, poor photostability and are of high cost. Thus their applications for accurate microbial viability determination are limited. Herein, for the first time we report the successful synthesis of fluorescent carbon dots (CDs) from bacteria via one-step hydrothermal carbonization. Benefiting from their highly negative surface charge (the zeta potential is as high as around -42 mV) and suitable size, the CDs can selectively stain dead microbial cells (bacteria and fungi) but not live ones. Importantly, compared to the widely used commercial dye PI, the developed CDs possess many great advantages including low cytotoxicity, multicolor imaging ability, excellent photostability and high selectivity. Moreover, because the synthetic method is simple, inexpensive and eco-friendly, this type of CD is suitable for large-scale production, making it an excellent candidate for microbial live/dead differentiation and viability assessment. The present work explores the feasibility of using bacteria to fabricate novel CDs and broadens the applications of CDs for biomedical applications.
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Affiliation(s)
- Xian-Wu Hua
- State Key Laboratory of Bioelectronics, School of Biological Science and Medical Engineering, Southeast University, Nanjing 210096, P. R. China.
| | - Yan-Wen Bao
- State Key Laboratory of Bioelectronics, School of Biological Science and Medical Engineering, Southeast University, Nanjing 210096, P. R. China.
| | - Hong-Yin Wang
- State Key Laboratory of Bioelectronics, School of Biological Science and Medical Engineering, Southeast University, Nanjing 210096, P. R. China.
| | - Zhan Chen
- Department of Chemistry, University of Michigan, 930 North University Avenue, Ann Arbor, Michigan 48109, USA.
| | - Fu-Gen Wu
- State Key Laboratory of Bioelectronics, School of Biological Science and Medical Engineering, Southeast University, Nanjing 210096, P. R. China.
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12
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Mei J, Leung NLC, Kwok RTK, Lam JWY, Tang BZ. Aggregation-Induced Emission: Together We Shine, United We Soar! Chem Rev 2015; 115:11718-940. [DOI: 10.1021/acs.chemrev.5b00263] [Citation(s) in RCA: 5139] [Impact Index Per Article: 571.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Ju Mei
- HKUST-Shenzhen Research Institute, Hi-Tech
Park, Nanshan, Shenzhen 518057, China
- Department of Chemistry,
HKUST Jockey Club Institute for Advanced Study, Institute of Molecular
Functional Materials, Division of Biomedical Engineering, State Key
Laboratory of Molecular Neuroscience, Division of Life Science, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong, China
| | - Nelson L. C. Leung
- HKUST-Shenzhen Research Institute, Hi-Tech
Park, Nanshan, Shenzhen 518057, China
- Department of Chemistry,
HKUST Jockey Club Institute for Advanced Study, Institute of Molecular
Functional Materials, Division of Biomedical Engineering, State Key
Laboratory of Molecular Neuroscience, Division of Life Science, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong, China
| | - Ryan T. K. Kwok
- HKUST-Shenzhen Research Institute, Hi-Tech
Park, Nanshan, Shenzhen 518057, China
- Department of Chemistry,
HKUST Jockey Club Institute for Advanced Study, Institute of Molecular
Functional Materials, Division of Biomedical Engineering, State Key
Laboratory of Molecular Neuroscience, Division of Life Science, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong, China
| | - Jacky W. Y. Lam
- HKUST-Shenzhen Research Institute, Hi-Tech
Park, Nanshan, Shenzhen 518057, China
- Department of Chemistry,
HKUST Jockey Club Institute for Advanced Study, Institute of Molecular
Functional Materials, Division of Biomedical Engineering, State Key
Laboratory of Molecular Neuroscience, Division of Life Science, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong, China
| | - Ben Zhong Tang
- HKUST-Shenzhen Research Institute, Hi-Tech
Park, Nanshan, Shenzhen 518057, China
- Department of Chemistry,
HKUST Jockey Club Institute for Advanced Study, Institute of Molecular
Functional Materials, Division of Biomedical Engineering, State Key
Laboratory of Molecular Neuroscience, Division of Life Science, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong, China
- Guangdong
Innovative Research Team, SCUT-HKUST Joint Research Laboratory, State
Key Laboratory of Luminescent Materials and Devices, South China University of Technology, Guangzhou 510640, China
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13
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Counter-pressure-assisted ITP with electrokinetic injection under field-amplified conditions for bacterial analysis. Anal Bioanal Chem 2015; 407:6995-7002. [DOI: 10.1007/s00216-015-8838-4] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2015] [Revised: 05/24/2015] [Accepted: 06/09/2015] [Indexed: 11/26/2022]
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14
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Breadmore MC, Tubaon RM, Shallan AI, Phung SC, Abdul Keyon AS, Gstoettenmayr D, Prapatpong P, Alhusban AA, Ranjbar L, See HH, Dawod M, Quirino JP. Recent advances in enhancing the sensitivity of electrophoresis and electrochromatography in capillaries and microchips (2012-2014). Electrophoresis 2015; 36:36-61. [DOI: 10.1002/elps.201400420] [Citation(s) in RCA: 132] [Impact Index Per Article: 14.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2014] [Revised: 09/25/2014] [Accepted: 09/25/2014] [Indexed: 12/15/2022]
Affiliation(s)
- Michael C. Breadmore
- School of Physical Science; Australian Centre of Research on Separation Science, University of Tasmania; Hobart Tasmania Australia
| | - Ria Marni Tubaon
- School of Physical Science; Australian Centre of Research on Separation Science, University of Tasmania; Hobart Tasmania Australia
| | - Aliaa I. Shallan
- School of Physical Science; Australian Centre of Research on Separation Science, University of Tasmania; Hobart Tasmania Australia
| | - Sui Ching Phung
- School of Physical Science; Australian Centre of Research on Separation Science, University of Tasmania; Hobart Tasmania Australia
| | - Aemi S. Abdul Keyon
- School of Physical Science; Australian Centre of Research on Separation Science, University of Tasmania; Hobart Tasmania Australia
- Faculty of Science; Department of Chemistry, Universiti Teknologi Malaysia; Johor Malaysia
| | - Daniel Gstoettenmayr
- School of Physical Science; Australian Centre of Research on Separation Science, University of Tasmania; Hobart Tasmania Australia
| | - Pornpan Prapatpong
- Faculty of Pharmacy; Department of Pharmaceutical Chemistry, Mahidol University; Rajathevee Bangkok Thailand
| | - Ala A. Alhusban
- Faculty of Health Sciences, School of Pharmacy; Australian Centre of Research on Separation Science, University of Tasmania; Hobart Tasmania Australia
| | - Leila Ranjbar
- School of Physical Science; Australian Centre of Research on Separation Science, University of Tasmania; Hobart Tasmania Australia
| | - Hong Heng See
- School of Physical Science; Australian Centre of Research on Separation Science, University of Tasmania; Hobart Tasmania Australia
- Ibnu Sina Institute for Fundamental Science Studies; Universiti Teknologi Malaysia; Johor Malaysia
| | - Mohamed Dawod
- Department of Chemistry; University of Michigan; Ann Arbor MI USA
- Faculty of Pharmacy; Department of Analytical Chemistry, Al-Azhar University; Cairo Egypt
| | - Joselito P. Quirino
- School of Physical Science; Australian Centre of Research on Separation Science, University of Tasmania; Hobart Tasmania Australia
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15
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Schwartz O, Bercovici M. Microfluidic Assay for Continuous Bacteria Detection Using Antimicrobial Peptides and Isotachophoresis. Anal Chem 2014; 86:10106-13. [DOI: 10.1021/ac5017776] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Ortal Schwartz
- Russell
Berrie Nanotechnology Institute, Technion − Israel Institute of Technology, Haifa 32000, Israel
| | - Moran Bercovici
- Russell
Berrie Nanotechnology Institute, Technion − Israel Institute of Technology, Haifa 32000, Israel
- Faculty
of Mechanical Engineering, Technion − Israel Institute of Technology, Haifa 32000, Israel
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Mei J, Hong Y, Lam JWY, Qin A, Tang Y, Tang BZ. Aggregation-induced emission: the whole is more brilliant than the parts. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2014; 26:5429-79. [PMID: 24975272 DOI: 10.1002/adma.201401356] [Citation(s) in RCA: 1837] [Impact Index Per Article: 183.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/26/2014] [Revised: 05/25/2014] [Indexed: 05/20/2023]
Abstract
"United we stand, divided we fall."--Aesop. Aggregation-induced emission (AIE) refers to a photophysical phenomenon shown by a group of luminogenic materials that are non-emissive when they are dissolved in good solvents as molecules but become highly luminescent when they are clustered in poor solvents or solid state as aggregates. In this Review we summarize the recent progresses made in the area of AIE research. We conduct mechanistic analyses of the AIE processes, unify the restriction of intramolecular motions (RIM) as the main cause for the AIE effects, and derive RIM-based molecular engineering strategies for the design of new AIE luminogens (AIEgens). Typical examples of the newly developed AIEgens and their high-tech applications as optoelectronic materials, chemical sensors and biomedical probes are presented and discussed.
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Affiliation(s)
- Ju Mei
- Department of Chemistry, HKUST Jockey Club Institute for Advanced Study, Division of Life Science, Institute of Molecular Functional Materials and Division of Biomedical Engineering, The Hong Kong University of Science & Technology (HKUST), Clear Water Bay, Kowloon, Hong Kong, China
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17
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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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18
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Xu Z, Li A, Wang Y, Chen Z, Hirokawa T. Pressure-assisted electrokinetic injection stacking for verteporfin drug to achieve highly sensitive enantioseparation and detection in artificial urine by capillary electrophoresis. J Chromatogr A 2014; 1355:284-90. [DOI: 10.1016/j.chroma.2014.06.005] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2014] [Revised: 05/15/2014] [Accepted: 06/01/2014] [Indexed: 10/25/2022]
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Kitagawa F, Otsuka K. Recent applications of on-line sample preconcentration techniques in capillary electrophoresis. J Chromatogr A 2014; 1335:43-60. [DOI: 10.1016/j.chroma.2013.10.066] [Citation(s) in RCA: 137] [Impact Index Per Article: 13.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2013] [Revised: 10/18/2013] [Accepted: 10/21/2013] [Indexed: 12/21/2022]
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Dziubakiewicz E, Buszewski B. Capillary electrophoresis of microbial aggregates. Electrophoresis 2014; 35:1160-4. [DOI: 10.1002/elps.201300588] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2013] [Revised: 12/04/2013] [Accepted: 12/09/2013] [Indexed: 11/05/2022]
Affiliation(s)
- Ewelina Dziubakiewicz
- Chair of Environmental Chemistry and Bioanalytics; Faculty of Chemistry; Nicolaus Copernicus University; Toruń Poland
- Centre for Modern Interdisciplinary Technologies; Nicolaus Copernicus University; Toruń Poland
| | - Bogusław Buszewski
- Chair of Environmental Chemistry and Bioanalytics; Faculty of Chemistry; Nicolaus Copernicus University; Toruń Poland
- Centre for Modern Interdisciplinary Technologies; Nicolaus Copernicus University; Toruń Poland
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21
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Zhao E, Hong Y, Chen S, Leung CWT, Chan CYK, Kwok RTK, Lam JWY, Tang BZ. Highly fluorescent and photostable probe for long-term bacterial viability assay based on aggregation-induced emission. Adv Healthc Mater 2014; 3:88-96. [PMID: 23814037 DOI: 10.1002/adhm.201200475] [Citation(s) in RCA: 93] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2012] [Revised: 03/27/2013] [Indexed: 12/17/2022]
Abstract
Long-term tracking of bacterial viability is of great importance for monitoring the viability change of bacteria under storage, evaluating disinfection efficiency, as well as for studying the pharmacokinetic and pharmacodynamic properties of antibacterials. Most of the conventional viability dyes, however, suffer from high toxicity and/or poor photostability, making them unsuitable for long-term studies. In this work, an aggregation-induced emission molecule, TPE-2BA, which can differentiate dead and living bacteria and serve as a highly fluorescent and photostable probe for long-term viability assay. TPE-2BA is a cell-impermeable DNA stain that binds to the groove of double-stranded DNA. Bacteria with compromised membrane open the access for TPE-2BA to reach DNA, endowing it with strong emission. The feasibility of using TPE-2BA for screening effective bactericides is also demonstrated. Plate count experiment reveals that TPE-2BA poses negligible toxicity to bacteria, indicating that it is an excellent probe for long-term bacterial viability assay.
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Affiliation(s)
- Engui Zhao
- Division of Biomedical Engineering, The Hong Kong University of Science & Technology (HKUST), Clear Water Bay, Kowloon, Hong Kong, China
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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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Phung SC, Nai YH, Powell SM, Macka M, Breadmore MC. Rapid and sensitive microbial analysis by capillary isotachophoresis with continuous electrokinetic injection under field amplified conditions. Electrophoresis 2013. [DOI: 10.1002/elps.201200479] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Sui Ching Phung
- Australia Centre of Research on Separation Science; School of Chemistry; University of Tasmania; Tasmania; Australia
| | - Yi Heng Nai
- Australia Centre of Research on Separation Science; School of Chemistry; University of Tasmania; Tasmania; Australia
| | - Shane M. Powell
- Tasmanian Institute of Agriculture; University of Tasmania; Tasmania; Australia
| | - Mirek Macka
- Australia Centre of Research on Separation Science; School of Chemistry; University of Tasmania; Tasmania; Australia
| | - Michael C. Breadmore
- Australia Centre of Research on Separation Science; School of Chemistry; University of Tasmania; Tasmania; Australia
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24
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Malá Z, Gebauer P, Boček P. Recent progress in analytical capillary isotachophoresis. Electrophoresis 2012; 34:19-28. [DOI: 10.1002/elps.201200323] [Citation(s) in RCA: 45] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2012] [Revised: 07/23/2012] [Accepted: 07/23/2012] [Indexed: 12/18/2022]
Affiliation(s)
- Zdena Malá
- Institute of Analytical Chemistry; Academy of Sciences of the Czech Republic; Brno; Czech Republic
| | - Petr Gebauer
- Institute of Analytical Chemistry; Academy of Sciences of the Czech Republic; Brno; Czech Republic
| | - Petr Boček
- Institute of Analytical Chemistry; Academy of Sciences of the Czech Republic; Brno; Czech Republic
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Oukacine F, Quirino JP, Destoumieux-Garzón D, Cottet H. Field enhanced bacterial sample stacking in isotachophoresis using wide-bore capillaries. J Chromatogr A 2012; 1268:180-4. [DOI: 10.1016/j.chroma.2012.10.026] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2012] [Revised: 10/08/2012] [Accepted: 10/09/2012] [Indexed: 12/12/2022]
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Quirino JP, Aranas AT. Simultaneous electrokinetic and hydrodynamic injection with on-line sample concentration via micelle to solvent stacking in micellar electrokinetic chromatography. Anal Chim Acta 2012; 733:84-9. [DOI: 10.1016/j.aca.2012.04.032] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2012] [Revised: 04/13/2012] [Accepted: 04/24/2012] [Indexed: 01/25/2023]
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Review of recent developments of on-line sample stacking techniques and their application in capillary electrophoresis. OPEN CHEM 2012. [DOI: 10.2478/s11532-012-0007-4] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023] Open
Abstract
AbstractCapillary electrophoresis (CE) has become one of the most useful tools in separation science because of its high separation efficiency, low cost, versatility, ease of sample preparation and automation. However, some limitations of CE, such as poor concentration sensitivity due to its lower sample loading and shorter optical path length, limits its further applications in separation science. In order to solve this problem, various on-line sample preconcentration techniques such as transient isotachophoresis preconcentration, field-enhanced sample stacking, micelle to solvent stacking, micelle collapse, dynamic pH junction, sweeping, solid phase extraction, single drop microextraction and liquid phase microextraction have been combined with CE. Recent developments, applications and some variants together with different combinations of these techniques integrating in CE are reviewed here and our discussions will be confined to the past three years (2008–2011).
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Oukacine F, Romestand B, Goodall DM, Massiera G, Garrelly L, Cottet H. Study of Antibacterial Activity by Capillary Electrophoresis Using Multiple UV Detection Points. Anal Chem 2012; 84:3302-10. [DOI: 10.1021/ac300004t] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Affiliation(s)
- Farid Oukacine
- Institut des Biomolécules Max Mousseron (IBMM, UMR 5247 CNRS-Université
de Montpellier1- Université de Montpellier 2), Place Eugène
Bataillon, case courrier 1706, 34095 Montpellier Cedex 5, France
- COLCOM, Cap Alpha, Avenue de l’Europe, Clapiers 34940 Montpellier,
France
| | - Bernard Romestand
- Laboratoire Ecosystèmes
Lagunaires, UMR 5119, Université de Montpellier 2, 34095 Montpellier, France
| | - David M. Goodall
- Paraytec Ltd, York House,
Outgang Lane, Osbaldwick, York YO19 5UP, United Kingdom
| | - Gladys Massiera
- Laboratoire Charles Coulomb, UMR 5521, CNRS-Université de Montpellier 2, Place Eugène
Bataillon, 34095 Montpellier Cedex 5, France
| | - Laurent Garrelly
- COLCOM, Cap Alpha, Avenue de l’Europe, Clapiers 34940 Montpellier,
France
| | - Hervé Cottet
- Institut des Biomolécules Max Mousseron (IBMM, UMR 5247 CNRS-Université
de Montpellier1- Université de Montpellier 2), Place Eugène
Bataillon, case courrier 1706, 34095 Montpellier Cedex 5, France
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