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Biobased Kapok Fiber Nano-Structure for Energy and Environment Application: A Critical Review. MOLECULES (BASEL, SWITZERLAND) 2022; 27:molecules27228107. [PMID: 36432208 PMCID: PMC9699385 DOI: 10.3390/molecules27228107] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/01/2022] [Revised: 11/08/2022] [Accepted: 11/12/2022] [Indexed: 11/23/2022]
Abstract
The increasing degradation of fossil fuels has motivated the globe to turn to green energy solutions such as biofuel in order to minimize the entire reliance on fossil fuels. Green renewable resources have grown in popularity in recent years as a result of the advancement of environmental technology solutions. Kapok fiber is a sort of cellulosic fiber derived from kapok tree seeds (Ceiba pentandra). Kapok Fiber, as a bio-template, offers the best alternatives to provide clean and renewable energy sources. The unique structure, good conductivity, and excellent physical properties exhibited by kapok fiber nominate it as a highly favored cocatalyst for deriving solar energy processes. This review will explore the role and recent developments of KF in energy production, including hydrogen and CO2 reduction. Moreover, this work summarized the potential of kapok fiber in environmental applications, including adsorption and degradation. The future contribution and concerns are highlighted in order to provide perspective on the future advancement of kapok fiber.
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2
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Xia Y, Li J, Huang LX, Hua B, Guo SS. In Situ Microreaction Platform Based on Acoustic Droplet Manipulation for Ultra-High-Precision Multiplex Bioassay. Anal Chem 2022; 94:6347-6354. [DOI: 10.1021/acs.analchem.2c00698] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Yu Xia
- Key Laboratory of Artificial Micro/Nano-Structures, Ministry of Education, School of Physics and Technology, Wuhan University, Wuhan 430072, China
| | - Juan Li
- Key Laboratory of Artificial Micro/Nano-Structures, Ministry of Education, School of Physics and Technology, Wuhan University, Wuhan 430072, China
| | - Lan-Xiang Huang
- Department of Laboratory Medicine, Zhongnan Hospital of Wuhan University Wuhan 430072, China
| | - Bo Hua
- The State Key Laboratory Breeding Base of Basic Science of Stomatology (Hubei-MOST) and Key Laboratory of Oral Biomedicine Ministry of Education, School and Hospital of Stomatology, Wuhan University, Wuhan 430072, China
| | - Shi-Shang Guo
- Key Laboratory of Artificial Micro/Nano-Structures, Ministry of Education, School of Physics and Technology, Wuhan University, Wuhan 430072, China
- Hubei Yangtze Memory Laboratories, Wuhan 430072, China
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3
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Zhang H, Li B, Liu Y, Chuan H, Liu Y, Xie P. Immunoassay technology: Research progress in microcystin-LR detection in water samples. JOURNAL OF HAZARDOUS MATERIALS 2022; 424:127406. [PMID: 34689091 DOI: 10.1016/j.jhazmat.2021.127406] [Citation(s) in RCA: 37] [Impact Index Per Article: 18.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/01/2021] [Revised: 09/20/2021] [Accepted: 09/29/2021] [Indexed: 06/13/2023]
Abstract
Increasing global warming and eutrophication have led to frequent outbreaks of cyanobacteria blooms in freshwater. Cyanobacteria blooms cause the death of aquatic and terrestrial organisms and have attracted considerable attention since the 19th century. Microcystin-LR (MC-LR) is one of the most typical cyanobacterial toxins. Therefore, the fast, sensitive, and accurate determination of MC-LR plays an important role in the health of humans and animals. Immunoassay refers to a method that uses the principle of immunology to determine the content of the tested substance in a sample using the tested substance as an antigen or antibody. In analytical applications, the immunoassay technology could use the specific recognition of antibodies for MC-LR detection. In this review, we firstly highlight the immunoassay detection of MC-LR over the past two decades, including classical enzyme-link immunosorbent assay (ELISA), modern immunoassay with optical signal, and modern immunoassay with electrical signal. Among these detection methods, the water environment was used as the main detection system. The advantages and disadvantages of the different detection methods were compared and analyzed, and the principles and applications of immunoassays in water samples were elaborated. Furthermore, the current challenges and developmental trends in immunoassay were systematically introduced to enhance MC-LR detection performance, and some critical points were given to deal with current challenges. This review provides novel insight into MC-LR detection based on immunoassay method.
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Affiliation(s)
- Huixia Zhang
- Institute for Ecological Research and Pollution Control of Plateau Lakes, School of Ecology and Environmental Sciences, Yunnan University, Kunming 650500, PR China
| | - Bingyan Li
- Institute for Ecological Research and Pollution Control of Plateau Lakes, School of Ecology and Environmental Sciences, Yunnan University, Kunming 650500, PR China
| | - Yipeng Liu
- Institute for Ecological Research and Pollution Control of Plateau Lakes, School of Ecology and Environmental Sciences, Yunnan University, Kunming 650500, PR China
| | - Huiyan Chuan
- Institute for Ecological Research and Pollution Control of Plateau Lakes, School of Ecology and Environmental Sciences, Yunnan University, Kunming 650500, PR China
| | - Yong Liu
- Institute for Ecological Research and Pollution Control of Plateau Lakes, School of Ecology and Environmental Sciences, Yunnan University, Kunming 650500, PR China.
| | - Ping Xie
- Institute for Ecological Research and Pollution Control of Plateau Lakes, School of Ecology and Environmental Sciences, Yunnan University, Kunming 650500, PR China; Donghu Experimental Station of Lake Ecosystems, State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan 430072, PR China.
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4
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Kim H, Tran MV, Petryayeva E, Solodova O, Susumu K, Oh E, Medintz IL, Algar WR. Affinity Immobilization of Semiconductor Quantum Dots and Metal Nanoparticles on Cellulose Paper Substrates. ACS APPLIED MATERIALS & INTERFACES 2020; 12:53462-53474. [PMID: 33180467 DOI: 10.1021/acsami.0c14559] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Colloidal semiconductor quantum dots (QDs), metal nanoparticles, and cellulose paper are materials with numerous applications in bioanalysis and beyond. The functional properties of QDs and metal NPs are substantially different than those of cellulose, such that their integration with cellulose paper is potentially enabling for many applications. Here, we characterize and evaluate multiple chemistries that modify cellulose paper substrates for the affinity-based immobilization of QDs, gold nanoparticles (Au NPs), and platinum nanoparticles (Pt NPs). These chemistries include grafting of cellulose fibers with imidazole and dithiol groups, as well as the aminosilanization of cellulose fibers (both with and without subsequent grafting with dithiol groups). Cellulose modifications and nanoparticle immobilization are characterized by multiple techniques, including, but not limited to, X-ray photoelectron spectroscopy, scanning electron microscopy, and optical imaging, extinction, and fluorescence measurements. We demonstrate the on-paper immobilization of color-tuned mixtures of QDs, on-paper patterning of QDs by microcontact printing, and post-immobilization enhancement of energy transfer and model assays of protease activity. The robustness of QD photoluminescence is also evaluated between immobilization chemistries. Paper-immobilized Au NPs and Pt NPs are evaluated as potential substrates for SERS and as supported catalysts for a model decolorization reaction. Our cumulative results indicate that there may not be a one-size-fits-all immobilization chemistry. Instead, the immobilization chemistry should be tailored and optimized for the downstream application.
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Affiliation(s)
- Hyungki Kim
- Department of Chemistry, University of British Columbia, 2036 Main Mall, Vancouver, BC V6T 1Z1, Canada
| | - Michael V Tran
- Department of Chemistry, University of British Columbia, 2036 Main Mall, Vancouver, BC V6T 1Z1, Canada
| | - Eleonora Petryayeva
- Department of Chemistry, University of British Columbia, 2036 Main Mall, Vancouver, BC V6T 1Z1, Canada
| | - Olga Solodova
- Department of Chemistry, University of British Columbia, 2036 Main Mall, Vancouver, BC V6T 1Z1, Canada
| | - Kimihiro Susumu
- Jacobs Corporation, Hanover, Maryland 21076, United States
- Optical Sciences Division, Code 5600, U.S. Naval Research Laboratory, Washington, District of Columbia 20375, United States
| | - Eunkeu Oh
- Optical Sciences Division, Code 5600, U.S. Naval Research Laboratory, Washington, District of Columbia 20375, United States
| | - Igor L Medintz
- Center for Bio/Molecular Science and Engineering, Code 6900, U.S. Naval Research Laboratory, Washington, District of Columbia 20375, United States
| | - W Russ Algar
- Department of Chemistry, University of British Columbia, 2036 Main Mall, Vancouver, BC V6T 1Z1, Canada
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5
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Prasad KS, Abugalyon Y, Li C, Xu F, Li X. A new method to amplify colorimetric signals of paper-based nanobiosensors for simple and sensitive pancreatic cancer biomarker detection. Analyst 2020; 145:5113-5117. [PMID: 32589169 PMCID: PMC7446663 DOI: 10.1039/d0an00704h] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
A low-cost, sensitive, and disposable paper-based immunosensor for instrument-free colorimetric detection of pancreatic cancer biomarker PEAK1 was reported for the first time by capitalizing the catalytic properties of gold nanoparticles in colour dye degradation. This simple signal amplification method enhances the detection sensitivity by about 10 fold.
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Affiliation(s)
- K Sudhakara Prasad
- Department of Chemistry, University of Texas at El Paso, 500 West University Avenue, El Paso, Texas 79968, USA.
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6
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Aktas GB, Skouridou V, Masip L. Sandwich-type aptasensor employing modified aptamers and enzyme-DNA binding protein conjugates. Anal Bioanal Chem 2019; 411:3581-3589. [PMID: 31089784 DOI: 10.1007/s00216-019-01839-6] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2019] [Revised: 03/18/2019] [Accepted: 04/09/2019] [Indexed: 11/27/2022]
Abstract
The use of aptamers in various analytical applications as molecular recognition elements and alternative to antibodies has led to the development of various platforms that facilitate the sensitive and specific detection of targets ranging from small molecules and proteins to whole cells. The goal of this work was to design a universal and adaptable sandwich-type aptasensor exploiting the unique properties of DNA binding proteins. Specifically, two different enzyme-DNA binding protein conjugates, GOx-dHP and HRP-scCro, were used for the direct detection of a protein using two aptamers for target capture and detection. The specific dsDNA binding sequence for each DNA binding protein tag was incorporated in the form of a hairpin at one end of each aptamer sequence during the synthesis step. Detection was accomplished by an enzymatic (GOx/HRP) cascade reaction after the binding of each enzyme conjugate to its corresponding binding sequence on each aptamer. The proposed sandwich-type aptasensor was validated for the detection of thrombin, which is one of the most commonly used model targets with known dual aptamers. The limit of detection accomplished was 0.92 nM which is comparable with other colorimetric platforms reported in the literature. The sensitivity of the aptasensor was easily modulated by changing the number of dsDNA binding sites incorporated in the aptamer sequences, thus controlling the enzyme stoichiometry. Finally, the potential use of the proposed sensing approach for real sample testing was demonstrated using spiked human plasma and no significant matrix effects were observed when up to 2% plasma was used.
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Affiliation(s)
- Gülsen Betül Aktas
- Departament d'Enginyeria Química, Universitat Rovira i Virgili, 26 Països Catalans, 43007, Tarragona, Spain
| | - Vasso Skouridou
- Departament d'Enginyeria Química, Universitat Rovira i Virgili, 26 Països Catalans, 43007, Tarragona, Spain
| | - Lluis Masip
- Departament d'Enginyeria Química, Universitat Rovira i Virgili, 26 Països Catalans, 43007, Tarragona, Spain.
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7
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Novel epoxy-silica nanoparticles to develop non-enzymatic colorimetric probe for analytical immuno/bioassays. Anal Chim Acta 2018; 1028:77-85. [PMID: 29884356 DOI: 10.1016/j.aca.2018.04.044] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2018] [Revised: 04/05/2018] [Accepted: 04/18/2018] [Indexed: 02/07/2023]
Abstract
We have developed a novel method to develop epoxy silica nanoparticles (EfSiNP) in a single pot. High surface coverage of epoxy functional groups between 150 and 57000 molecules per particles (∼1013-1016 molecules/mL of 200 nm EfSiNPs) was achieved for different preparation conditions. We then created a red colored probe by conjugating Fuchsin dye to the epoxy functionalities of EfSINPs. Anti-mouse IgG was co-immobilized with Fuchsin and their ratios were optimized for achieving optimum ratios by testing those in functional assays. Dye to antibody ratios were in good negative correlation with a coefficient of -1.00 measured at a confidence level of over 99%. We employed the developed non-enzymatic colorimetric immunonanoprobe for detecting mouse IgG in a direct immunoassay format. We achieved a sensitivity of 427 pg/mL with the assay.
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8
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Han H, Lee JS, Kim H, Shin S, Lee J, Kim J, Hou X, Cho SW, Seo J, Lee T. Single-Droplet Multiplex Bioassay on a Robust and Stretchable Extreme Wetting Substrate through Vacuum-Based Droplet Manipulation. ACS NANO 2018; 12:932-941. [PMID: 29262253 DOI: 10.1021/acsnano.7b05826] [Citation(s) in RCA: 47] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Herein, a droplet manipulation system with a superamphiphobic (SPO)-superamphiphilic (SPI) patterned polydimethylsiloxane (PDMS) substrate is developed for a multiplex bioassay from single-droplet samples. The SPO substrate is fabricated by sequential spraying of adhesive and fluorinated silica nanoparticles onto a PDMS substrate. It is subsequently subjected to oxygen plasma with a patterned mask to form SPI patterns. The SPO layer exhibits extreme liquid repellency with a high contact angle (>150°) toward low surface tension and viscous biofluidic droplets (e.g., ethylene glycol, blood, dimethyl sulfoxide, and alginate hydrogel). In contrast, the SPI exhibits liquid adhesion with a near zero contact angle. Using the droplet manipulation system, various liquid droplets can be precisely manipulated and dispensed onto the predefined SPI patterns on the SPO PDMS substrate. This system enables a multiplex colorimetric bioassay, capable of detecting multiple analytes, including glucose, uric acid, and lactate, from a single sample droplet. In addition, the detection of glucose concentrations in a plasma droplet of diabetic and healthy mice are performed to demonstrate the feasibility of the proposed system for efficient clinical diagnostic applications.
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Affiliation(s)
| | | | | | | | | | - Jongchan Kim
- Department of Electrical Engineering and Computer Science, University of Michigan , Ann Arbor, Michigan 48109, United States
| | - Xu Hou
- College of Chemistry and Chemical Engineering, Collaborative Innovation Center of Chemistry for Energy Materials, and State Key Laboratory of Physical Chemistry of Solid Surfaces, Xiamen University , Xiamen 361005, China
| | | | - Jungmok Seo
- Center for Biomaterials, Biomedical Research Institute, Korea Institute of Science and Technology (KIST) , Seoul 02792, Republic of Korea
- Division of Bio-Medical Science & Technology, KIST School, Korea University of Science and Technology (UST) , Seoul 02792, Republic of Korea
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9
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Ahmad R, Jang H, Batule BS, Park HG. Barcode DNA-Mediated Signal Amplifying Strategy for Ultrasensitive Biomolecular Detection on Matrix-Assisted Laser Desorption Ionization Time of Flight (MALDI-TOF) Mass Spectrometry. Anal Chem 2017; 89:8966-8973. [DOI: 10.1021/acs.analchem.7b01535] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- Raheel Ahmad
- Department of Chemical and
Biomolecular Engineering (BK 21+ program), KAIST, Daehak-ro 291, Yuseong-gu, Daejeon 34141, Republic of Korea
| | - Hyowon Jang
- Department of Chemical and
Biomolecular Engineering (BK 21+ program), KAIST, Daehak-ro 291, Yuseong-gu, Daejeon 34141, Republic of Korea
| | - Bhagwan S. Batule
- Department of Chemical and
Biomolecular Engineering (BK 21+ program), KAIST, Daehak-ro 291, Yuseong-gu, Daejeon 34141, Republic of Korea
| | - Hyun Gyu Park
- Department of Chemical and
Biomolecular Engineering (BK 21+ program), KAIST, Daehak-ro 291, Yuseong-gu, Daejeon 34141, Republic of Korea
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10
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Hu Q, Ma K, Mei Y, He M, Kong J, Zhang X. Metal-to-ligand charge-transfer: Applications to visual detection of β-galactosidase activity and sandwich immunoassay. Talanta 2017; 167:253-259. [PMID: 28340718 DOI: 10.1016/j.talanta.2017.02.027] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2016] [Revised: 02/07/2017] [Accepted: 02/10/2017] [Indexed: 12/22/2022]
Abstract
In this work, we report a novel use of the distinctive metal-to-ligand charge-transfer (MLCT) absorption properties of the chromogenic Fe(BPDS)34- (BPDS=bathophenanthroline disulfonic acid) reporter for the visual detection of β-galactosidase (β-Gal) activity and sandwich immunoassay. The enzymatic hydrolysis of the substrate p-aminophenyl-β-D-galactopyranoside can switch on the reduction of Fe3+ to Fe2+ and the subsequent complexation of Fe2+ with the BPDS ligand to generate the Fe(BPDS)34- reporter, leading to the appearance of the intense MLCT absorption band at 535nm and the colorless-to-red color change of the solution. Simply through a single step, the activity of β-Gal can be sensitively and selectively detected within the dynamic range of 0-220mUmL-1, with a limit of detection (LOD) of 1.69mUmL-1. This approach is applicable for the visual detection of β-Gal activities in the presence of complex human serum samples. Besides, when integrated with the sandwich immunoassay of carcinoembryonic antigen, a LOD of 1.16ngmL-1 can be achieved. In light of its prominent simplicity and practicality, our MLCT-based approach holds great potential in diagnostic and analytical applications.
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Affiliation(s)
- Qiong Hu
- School of Environmental and Biological Engineering, Nanjing University of Science and Technology, Nanjing 210094, PR China
| | - Kefeng Ma
- School of Environmental and Biological Engineering, Nanjing University of Science and Technology, Nanjing 210094, PR China
| | - Yaqi Mei
- School of Environmental and Biological Engineering, Nanjing University of Science and Technology, Nanjing 210094, PR China
| | - Minhui He
- School of Environmental and Biological Engineering, Nanjing University of Science and Technology, Nanjing 210094, PR China
| | - Jinming Kong
- School of Environmental and Biological Engineering, Nanjing University of Science and Technology, Nanjing 210094, PR China.
| | - Xueji Zhang
- School of Environmental and Biological Engineering, Nanjing University of Science and Technology, Nanjing 210094, PR China; Chemistry Department, College of Arts and Sciences, University of South Florida, East Fowler Ave, Tampa, Florida 33620-4202, United States.
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11
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Recent advances in Nanomaterial-mediated Bio and immune sensors for detection of aflatoxin in food products. Trends Analyt Chem 2017. [DOI: 10.1016/j.trac.2016.12.003] [Citation(s) in RCA: 74] [Impact Index Per Article: 10.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
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12
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Jia L, Zhou T, Xu J, Li X, Dong K, Huang J, Xu Z. The Enhanced Catalytic Activities of Asymmetric Au-Ni Nanoparticle Decorated Halloysite-Based Nanocomposite for the Degradation of Organic Dyes. NANOSCALE RESEARCH LETTERS 2016; 11:72. [PMID: 26852228 PMCID: PMC4744597 DOI: 10.1186/s11671-016-1252-9] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/06/2015] [Accepted: 01/14/2016] [Indexed: 05/27/2023]
Abstract
Janus particles (JPs) are unique among the nano-/microobjects because they provide asymmetry and can thus impart drastically different chemical or physical properties. In this work, we have fabricated the magnetic halloysite nanotube (HNT)-based HNTs@Fe3O4 nanocomposite (NCs) and then anchored the Janus Au-Ni or isotropic Au nanoparticles (NPs) to the surface of external wall of sulfydryl modified magnetic nanotubes. The characterization by physical methods authenticates the successful fabrication of two different magnetic HNTs@Fe3O4@Au and HNTs@Fe3O4@Au-Ni NCs. The catalytic activity and recyclability of the two NCs have been evaluated considering the degradation of Congo red (CR) and 4-nitrophenol (4-NP) using sodium borohydride as a model reaction. The results reveal that the symmetric Au NPs participated NCs display low activity in the degradation of the above organic dyes. However, a detailed kinetic study demonstrates that the employ of bimetallic Janus Au-Ni NPs in the NCs indicates enhanced catalytic activity, owing to the structurally specific nature. Furthermore, the magnetic functional NCs reported here can be used as recyclable catalyst which can be recovered simply by magnet.
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Affiliation(s)
- Lei Jia
- Department of Physics and Chemistry, Henan Polytechnic University, Jiaozuo, 454000, People's Republic of China
- State Key Laboratory of Solid Lubrication, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou, 730000, People's Republic of China
| | - Tao Zhou
- Department of Physics and Chemistry, Henan Polytechnic University, Jiaozuo, 454000, People's Republic of China
| | - Jun Xu
- Department of Physics and Chemistry, Henan Polytechnic University, Jiaozuo, 454000, People's Republic of China.
| | - Xiaohui Li
- Department of Physics and Chemistry, Henan Polytechnic University, Jiaozuo, 454000, People's Republic of China
| | - Kun Dong
- Department of Physics and Chemistry, Henan Polytechnic University, Jiaozuo, 454000, People's Republic of China
| | - Jiancui Huang
- Department of Physics and Chemistry, Henan Polytechnic University, Jiaozuo, 454000, People's Republic of China
| | - Zhouqing Xu
- Department of Physics and Chemistry, Henan Polytechnic University, Jiaozuo, 454000, People's Republic of China.
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Wang X, Pauli J, Niessner R, Resch-Genger U, Knopp D. Gold nanoparticle-catalyzed uranine reduction for signal amplification in fluorescent assays for melamine and aflatoxin B1. Analyst 2016; 140:7305-12. [PMID: 26359515 DOI: 10.1039/c5an01300c] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
A multifunctional fluorescence platform has been constructed based on gold nanoparticle (AuNP)-catalyzed uranine reduction. The catalytic reduction of uranine was conducted in aqueous solution using AuNPs as nanocatalyst and sodium borohydride as reducing reagent, which was monitored by fluorescence and UV-vis spectroscopy. The reaction rate was highly dependent on the concentration, size and dispersion state of AuNPs. When AuNPs aggregated, their catalytic ability decreased, and thereby a label-free fluorescent assay was developed for the detection of melamine, which can be used for melamine determination in milk. In addition, a fluorescent immunoassay for aflatoxin B1 (AFB1) was established using the catalytic reaction for signal amplification based on target-induced concentration change of AuNPs, where AFB1-BSA-coated magnetic beads and anti-AFB1 antibody-conjugated AuNPs were employed as capture and signal probe, respectively. The detection can be accomplished in 1 h and acceptable recoveries in spiked maize samples were achieved. The developed fluorescence system is simple, sensitive and specific, which could be used for the detection of a wide range of analytes.
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Affiliation(s)
- Xu Wang
- Institute of Hydrochemistry, Chair for Analytical Chemistry, Technische Universität München, Marchioninistr. 17, D-81377 München, Germany.
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14
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Kroschwald F, Nagel J, Janke A, Simon F, Zimmerer C, Heinrich G, Voit B. Gold nanoparticle layers from multi-step adsorption immobilised on a polymer surface during injection molding. J Appl Polym Sci 2016. [DOI: 10.1002/app.43608] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Affiliation(s)
- Felix Kroschwald
- Leibniz-Institut für Polymerforschung Dresden e.V; Hohe Straße 6 Dresden 01069 Germany
| | - Jürgen Nagel
- Leibniz-Institut für Polymerforschung Dresden e.V; Hohe Straße 6 Dresden 01069 Germany
| | - Andreas Janke
- Leibniz-Institut für Polymerforschung Dresden e.V; Hohe Straße 6 Dresden 01069 Germany
| | - Frank Simon
- Leibniz-Institut für Polymerforschung Dresden e.V; Hohe Straße 6 Dresden 01069 Germany
| | - Cordelia Zimmerer
- Leibniz-Institut für Polymerforschung Dresden e.V; Hohe Straße 6 Dresden 01069 Germany
| | - Gert Heinrich
- Leibniz-Institut für Polymerforschung Dresden e.V; Hohe Straße 6 Dresden 01069 Germany
- Institut für Werkstoffwissenschaft, Technische Universität Dresden; Hohe Straße 6 Dresden 01069 Germany
| | - Brigitte Voit
- Leibniz-Institut für Polymerforschung Dresden e.V; Hohe Straße 6 Dresden 01069 Germany
- Department Chemistry and Food Chemistry; Organic Chemistry of Polymers; Technische Universität Dresden; Hohe Straße 6 Dresden 01069 Germany
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15
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Wang X, Niessner R, Tang D, Knopp D. Nanoparticle-based immunosensors and immunoassays for aflatoxins. Anal Chim Acta 2016; 912:10-23. [DOI: 10.1016/j.aca.2016.01.048] [Citation(s) in RCA: 106] [Impact Index Per Article: 13.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2015] [Revised: 01/25/2016] [Accepted: 01/28/2016] [Indexed: 12/21/2022]
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16
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Microfluidic chip-based silver nanoparticles aptasensor for colorimetric detection of thrombin. Talanta 2015; 150:81-7. [PMID: 26838384 DOI: 10.1016/j.talanta.2015.09.013] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2015] [Revised: 09/03/2015] [Accepted: 09/06/2015] [Indexed: 12/21/2022]
Abstract
In this paper, a colorimetric silver nanoparticles aptasensor (aptamer-AgNPs) was developed for simple and straightforward detection of protein in microfluidic chip. Surface-functionalized microfluidic channels were employed as the capture platform. Then the mixture of target protein and aptamer-AgNPs were injected into the microfluidic channels for colorimetric detection. To demonstrate the performance of this detection platform, thrombin was chosen as a model target protein. Introduction of thrombin could form a sandwich-type complex involving immobilized AgNPs. The amount of aptamer-AgNPs on the complex augmented along with the increase of the thrombin concentration causing different color change that can be analyzed both by naked eyes and a flatbed scanner. This method is featured with low sample consumption, simple processes of microfluidic platform and straightforward colorimetric detection with aptamer-AgNPs. Thrombin at concentrations as low as 20pM can be detected using this aptasensor without signal amplification. This work demonstrated that it had good selectivity over other proteins and it could be a useful strategy to detect other targets with two affinity binding sites for ligands as well.
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17
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Chang CC, Chen CP, Lee CH, Chen CY, Lin CW. Colorimetric detection of human chorionic gonadotropin using catalytic gold nanoparticles and a peptide aptamer. Chem Commun (Camb) 2015; 50:14443-6. [PMID: 25302679 DOI: 10.1039/c4cc06366j] [Citation(s) in RCA: 47] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
We combined catalytic gold nanoparticles (AuNPs) with an hCG-specific peptide aptamer to create a simple, sensitive, label-free colorimetric assay for hCG. The applications of this colorimetric biosensor may be expanded by changing the peptide aptamer.
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Affiliation(s)
- Chia-Chen Chang
- Institute of Biomedical Engineering, National Taiwan University, Taipei 106, Taiwan.
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18
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Wang X, Niessner R, Knopp D. Controlled growth of immunogold for amplified optical detection of aflatoxin B1. Analyst 2015; 140:1453-8. [DOI: 10.1039/c4an02281e] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Abstract
A simple, sensitive and cost-effective method for the analysis of the mycotoxin aflatoxin B1 (AFB1) has been established based on controlled growth of immunogold.
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Affiliation(s)
- Xu Wang
- Institute of Hydrochemistry
- Chair for Analytical Chemistry
- Technische Universität München
- D-81377 München
- Germany
| | - Reinhard Niessner
- Institute of Hydrochemistry
- Chair for Analytical Chemistry
- Technische Universität München
- D-81377 München
- Germany
| | - Dietmar Knopp
- Institute of Hydrochemistry
- Chair for Analytical Chemistry
- Technische Universität München
- D-81377 München
- Germany
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19
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Chen C, Luo M, Ye T, Li N, Ji X, He Z. Sensitive colorimetric detection of protein by gold nanoparticles and rolling circle amplification. Analyst 2015; 140:4515-20. [DOI: 10.1039/c5an00485c] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
A sensitive and selective colorimetric biosensor for the detection of protein, which combines gold nanoparticles and rolling circle amplification, is described.
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Affiliation(s)
- Chaohui Chen
- Key Laboratory of Analytical Chemistry for Biology and Medicine (Ministry of Education)
- College of Chemistry and Molecular Sciences
- Wuhan University
- Wuhan 430072
- P. R. China
| | - Ming Luo
- Key Laboratory of Analytical Chemistry for Biology and Medicine (Ministry of Education)
- College of Chemistry and Molecular Sciences
- Wuhan University
- Wuhan 430072
- P. R. China
| | - Tai Ye
- Key Laboratory of Analytical Chemistry for Biology and Medicine (Ministry of Education)
- College of Chemistry and Molecular Sciences
- Wuhan University
- Wuhan 430072
- P. R. China
| | - Ningxing Li
- Key Laboratory of Analytical Chemistry for Biology and Medicine (Ministry of Education)
- College of Chemistry and Molecular Sciences
- Wuhan University
- Wuhan 430072
- P. R. China
| | - Xinghu Ji
- Key Laboratory of Analytical Chemistry for Biology and Medicine (Ministry of Education)
- College of Chemistry and Molecular Sciences
- Wuhan University
- Wuhan 430072
- P. R. China
| | - Zhike He
- Key Laboratory of Analytical Chemistry for Biology and Medicine (Ministry of Education)
- College of Chemistry and Molecular Sciences
- Wuhan University
- Wuhan 430072
- P. R. China
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20
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Magnetic bead-based colorimetric immunoassay for aflatoxin B1 using gold nanoparticles. SENSORS 2014; 14:21535-48. [PMID: 25405511 PMCID: PMC4279548 DOI: 10.3390/s141121535] [Citation(s) in RCA: 54] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/11/2014] [Revised: 11/07/2014] [Accepted: 11/11/2014] [Indexed: 12/16/2022]
Abstract
A competitive colorimetric immunoassay for the detection of aflatoxin B1 (AFB) has been established using biofunctionalized magnetic beads (MBs) and gold nanoparticles (GNPs). Aflatoxin B1-bovine serum albumin conjugates (AFB-BSA) modified MBs were employed as capture probe, which could specifically bind with GNP-labeled anti-AFB antibodies through immunoreaction, while such specific binding was competitively inhibited by the addition of AFB. After magnetic separation, the supernatant solution containing unbound GNPs was directly tested by UV-Vis spectroscopy. The absorption intensity was directly proportional to the AFB concentration. The influence of GNP size, incubation time and pH was investigated in detail. After optimization, the developed method could detect AFB in a linear range from 20 to 800 ng/L, with the limit of detection at 12 ng/L. The recoveries for spiked maize samples ranged from 92.8% to 122.0%. The proposed immunoassay provides a promising approach for simple, rapid, specific and cost-effective detection of toxins in the field of food safety.
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21
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Deng B, Lin Y, Wang C, Li F, Wang Z, Zhang H, Li XF, Le XC. Aptamer binding assays for proteins: the thrombin example--a review. Anal Chim Acta 2014; 837:1-15. [PMID: 25000852 DOI: 10.1016/j.aca.2014.04.055] [Citation(s) in RCA: 257] [Impact Index Per Article: 25.7] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2014] [Revised: 04/26/2014] [Accepted: 04/28/2014] [Indexed: 12/14/2022]
Abstract
Experimentally selected single-stranded DNA and RNA aptamers are able to bind to specific target molecules with high affinity and specificity. Many analytical methods make use of affinity binding between the specific targets and their aptamers. In the development of these methods, thrombin is the most frequently used target molecule to demonstrate the proof-of-principle. This paper critically reviews more than one hundred assays that are based on aptamer binding to thrombin. This review focuses on homogeneous binding assays, electrochemical aptasensors, and affinity separation techniques. The emphasis of this review is placed on understanding the principles and unique features of the assays. The principles of most assays for thrombin are applicable to the determination of other molecular targets.
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Affiliation(s)
- Bin Deng
- Department of Laboratory Medicine and Pathology, University of Alberta, Edmonton, AB, T6G 2G3, Canada
| | - Yanwen Lin
- Department of Chemistry, University of Alberta, Edmonton, AB, T6G 2G2, Canada
| | - Chuan Wang
- Department of Laboratory Medicine and Pathology, University of Alberta, Edmonton, AB, T6G 2G3, Canada
| | - Feng Li
- Department of Laboratory Medicine and Pathology, University of Alberta, Edmonton, AB, T6G 2G3, Canada
| | - Zhixin Wang
- Department of Laboratory Medicine and Pathology, University of Alberta, Edmonton, AB, T6G 2G3, Canada
| | - Hongquan Zhang
- Department of Laboratory Medicine and Pathology, University of Alberta, Edmonton, AB, T6G 2G3, Canada
| | - Xing-Fang Li
- Department of Laboratory Medicine and Pathology, University of Alberta, Edmonton, AB, T6G 2G3, Canada
| | - X Chris Le
- Department of Laboratory Medicine and Pathology, University of Alberta, Edmonton, AB, T6G 2G3, Canada; Department of Chemistry, University of Alberta, Edmonton, AB, T6G 2G2, Canada.
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22
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Qiang W, Liu H, Li W, Chen X, Xu D. Label-free detection of adenosine based on fluorescence resonance energy transfer between fluorescent silica nanoparticles and unmodified gold nanoparticles. Anal Chim Acta 2014; 828:92-8. [DOI: 10.1016/j.aca.2014.04.043] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2014] [Revised: 04/10/2014] [Accepted: 04/19/2014] [Indexed: 12/20/2022]
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23
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Li J, Li W, Qiang W, Wang X, Li H, Xu D. A non-aggregation colorimetric assay for thrombin based on catalytic properties of silver nanoparticles. Anal Chim Acta 2013; 807:120-5. [PMID: 24356228 DOI: 10.1016/j.aca.2013.11.011] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2013] [Revised: 11/01/2013] [Accepted: 11/07/2013] [Indexed: 10/26/2022]
Abstract
In this paper, we developed a simple and rapid colorimetric assay for protein detection based on the reduction of dye molecules catalyzed by silver nanoparticles (AgNPs). Aptamer-modified magnetic particles and aptamer-functionalized AgNPs were employed as capture and detection probes, respectively. Introduction of thrombin as target protein could form a sandwich-type complex involving catalytically active AgNPs, whose catalytic activity was monitored on the catalytic reduction of rhodamine B (RhB) by sodium borohydride (NaBH4). The amount of immobilized AgNPs on the complex increased along with the increase of the thrombin concentration, thus the detection of thrombin was achieved via recording the decrease in absorbance corresponding to RhB. This method has adopted several advantages from the key factors involved, i.e., the sandwich binding of affinity aptamers contributed to the increased specificity; magnetic particles could result in rapid capture and separation processes; the conjugation of AgNPs would lead to a clear visual detection. It allows for the detection limit of thrombin down to picomolar level by the naked eye, with remarkable selectivity over other proteins. Moreover, it is possible to apply this method to the other targets with two binding sites as well.
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Affiliation(s)
- Jie Li
- State Key Laboratory of Analytical Chemistry for Life Science, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210093, China
| | - Wei Li
- State Key Laboratory of Analytical Chemistry for Life Science, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210093, China
| | - Weibing Qiang
- State Key Laboratory of Analytical Chemistry for Life Science, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210093, China
| | - Xi Wang
- State Key Laboratory of Analytical Chemistry for Life Science, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210093, China
| | - Hui Li
- State Key Laboratory of Analytical Chemistry for Life Science, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210093, China
| | - Danke Xu
- State Key Laboratory of Analytical Chemistry for Life Science, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210093, China.
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24
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Wu W, Chen J, Fang Z, Ge C, Xiang Z, Ouyang C, Lie P, Xiao Z, Yu L, Wang L, Zeng L. A self-assembled deoxyribonucleic acid concatemer for sensitive detection of single nucleotide polymorphism. Anal Chim Acta 2013; 804:235-9. [PMID: 24267087 DOI: 10.1016/j.aca.2013.09.055] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2013] [Revised: 09/04/2013] [Accepted: 09/29/2013] [Indexed: 10/26/2022]
Abstract
Polymerase-free and label-free strategies for DNA detection have shown excellent sensitivity and specificity in various biological samples. Herein, we propose a method for single nucleotide polymorphism (SNP) detection by using self-assembled DNA concatemers. Capture probes, bound to magnetic beads, can joint mediator probes by T4 DNA ligase in the presence of target DNA that is complementary to the capture probe and mediator probe. The mediator probes trigger self-assembly of two auxiliary probes on magnetic beads to form DNA concatemers. Separated by a magnetic rack, the double-stranded concatemers on beads can recruit a great amount of SYBR Green I and eventually result in amplified fluorescent signals. In comparison with reported methods for SNP detection, the concatemer-based approach has significant advantages of low background, simplicity, and ultrasensitivity, making it as a convenient platform for clinical applications. As a proof of concept, BRAF(T1799A) oncogene mutation, a SNP involved in diverse human cancers, was used as a model target. The developed approach using a fluorescent intercalator can detect as low as 0.1 fM target BRAF(T1799A) DNA, which is better than those previously published methods for SNP detection. This method is robust and can be used directly to measure the BRAF(T1799A) DNA in complex human serum with excellent recovery (94-103%). It is expected that this assay principle can be directed toward other SNP genes by simply changing the mediator probe and auxiliary probes.
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Affiliation(s)
- Wei Wu
- Key Laboratory of Regenerative Biology, South China Institute for Stem Cell Biology and Regenerative Medicine, Guangzhou Institutes of Biomedicine and Health, Chinese Academy of Sciences, Guangzhou 510530, China
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25
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Li W, Qiang W, Li J, Li H, Dong Y, Zhao Y, Xu D. Nanoparticle-catalyzed reductive bleaching for fabricating turn-off and enzyme-free amplified colorimetric bioassays. Biosens Bioelectron 2013; 51:219-24. [PMID: 23962710 DOI: 10.1016/j.bios.2013.07.050] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2013] [Revised: 07/26/2013] [Accepted: 07/26/2013] [Indexed: 11/19/2022]
Abstract
Nanoparticle-catalyzed reductive bleaching reactions of colored substrates are emerging as a class of novel indicator reactions for fabricating enzyme-free amplified colorimetric biosensing (turn-off mode), which are exactly opposite to the commonly used oxidative coloring processes of colorless substrates in traditional enzyme-catalyzed amplified colorimetric bioassays (turn-on mode). In this work, a simple theoretical analysis shows that the sensitivity of this colorimetric bioassay can be improved by increasing the amplification factor (kcatΔt), or enhancing the binding affinity between analyte and receptor (Kd), or selecting the colored substrates with high extinction coefficients (ε). Based on this novel strategy, we have developed a turn-off and cost-effective amplified colorimetric thrombin aptasensor. This aptasensor made full use of sandwich binding of two affinity aptamers for increased specificity, magnetic particles for easy separation and enrichment, and gold nanoparticle (AuNP)-catalyzed reductive bleaching reaction to generate the amplified colorimetric signal. With 4-nitrophenol (4-NP) as the non-dye colored substrate, colorimetric bioassay of thrombin was achieved by the endpoint method with a detection limit of 91pM. In particular, when using methylene blue (MB) as the substrate, for the first time, a more convenient and efficient kinetic-based colorimetric thrombin bioassay was achieved without the steps of acidification termination and magnetic removal of particles, with a low detection limit of 10pM, which was superior to the majority of the existing colorimetric thrombin aptasensors. The proposed colorimetric protocol is expected to hold great promise in field analysis and point-of-care applications.
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Affiliation(s)
- Wei Li
- State Key Laboratory of Analytical Chemistry for Life Science, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210093, Jiangsu, China
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26
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Wang W, Wang F, Kang Y, Wang A. Facile self-assembly of Au nanoparticles on a magnetic attapulgite/Fe3O4 composite for fast catalytic decoloration of dye. RSC Adv 2013. [DOI: 10.1039/c3ra41836g] [Citation(s) in RCA: 42] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023] Open
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27
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Huang JT, Yang XX, Zeng QL, Wang J. A simple green route to prepare stable silver nanoparticles with pear juice and a new selective colorimetric method for detection of cysteine. Analyst 2013; 138:5296-302. [DOI: 10.1039/c3an00901g] [Citation(s) in RCA: 43] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
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