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Zeng H, Chen H, Yang B, Zeng J, Meng L, Shi D, Chen L, Huang Y. Highly-oxidizing Au@MnO 2-X nanozymes mediated homogeneous electrochemical detection of organophosphorus independent of dissolved oxygen. JOURNAL OF HAZARDOUS MATERIALS 2023; 459:132116. [PMID: 37487330 DOI: 10.1016/j.jhazmat.2023.132116] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/18/2023] [Revised: 07/17/2023] [Accepted: 07/20/2023] [Indexed: 07/26/2023]
Abstract
Traditional oxidase-like (OXD) nanozymes rely primarily on O2-mediated superoxide anion (O2·-) process for catalytic oxidation and organophosphorus (Ops) detection. While during the actual detection process, the concentration of O2 is inconstant that can be easily changed with the external environment, distorting detection results. Herein, highly-oxidizing Au@MnO2-X nanozymes with core-shell nanostructure are designed which trigger substantial electron transfer from inner Au core to outer ultrathin MnO2-X layer. According to experimental and theoretical calculations, the core-shell nanostructure and ultrathin MnO2-X of Au@MnO2-X result in the large surface defects, high oxygen vacancies and MnIII ratios. The specially structured Au@MnO2-X nanozymes are therefore highly-oxidizing and the catalytic oxidation can be completed merely through electrons transferring instead of the O2-mediated O2·- process. Based on this, an oxygen independent and ultrasensitive nanozyme-based sensor is established using homogeneous electrochemistry (HEC), its Ops is detected at a LOD of 0.039 ng mL-1. Combined with the UV-vis spectrum of 3,3',5,5'-tetramethylbenzidine (TMB), the linear discriminant analysis of five Ops i.e., Ethion, Omethoate, Diazinon, Chlorpyrifos methyl and Dipterex has achieved superior discrimination results. Therefore, HEC based on strong oxidizing nanozymes provide a new avenue for the development of high-performance electrochemical sensors and demonstrate potential applicability to pesticide residue determination in real samples.
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Affiliation(s)
- Huiling Zeng
- College of Animal Science and Technology, The Key Laboratory of Ministry of Education, Guangxi University, Nanning 530000, Guangxi, People's Republic of China; College of Material, Chemistry and Chemical Engineering, Key Laboratory of Organosilicon Chemistry and Material Technology, Ministry of Education, Hangzhou Normal University, Hangzhou 311121, Zhejiang, People's Republic of China
| | - Hailan Chen
- College of Animal Science and Technology, The Key Laboratory of Ministry of Education, Guangxi University, Nanning 530000, Guangxi, People's Republic of China; Guangxi Key Laboratory of Animal Reproduction, Breeding and Disease Control, Nanning 530004, People's Republic of China.
| | - Bing Yang
- College of Material, Chemistry and Chemical Engineering, Key Laboratory of Organosilicon Chemistry and Material Technology, Ministry of Education, Hangzhou Normal University, Hangzhou 311121, Zhejiang, People's Republic of China
| | - Junyi Zeng
- College of Material, Chemistry and Chemical Engineering, Key Laboratory of Organosilicon Chemistry and Material Technology, Ministry of Education, Hangzhou Normal University, Hangzhou 311121, Zhejiang, People's Republic of China
| | - Lin Meng
- College of Material, Chemistry and Chemical Engineering, Key Laboratory of Organosilicon Chemistry and Material Technology, Ministry of Education, Hangzhou Normal University, Hangzhou 311121, Zhejiang, People's Republic of China
| | - Donglin Shi
- College of Material, Chemistry and Chemical Engineering, Key Laboratory of Organosilicon Chemistry and Material Technology, Ministry of Education, Hangzhou Normal University, Hangzhou 311121, Zhejiang, People's Republic of China
| | - Liang Chen
- College of Material, Chemistry and Chemical Engineering, Key Laboratory of Organosilicon Chemistry and Material Technology, Ministry of Education, Hangzhou Normal University, Hangzhou 311121, Zhejiang, People's Republic of China.
| | - Youju Huang
- College of Material, Chemistry and Chemical Engineering, Key Laboratory of Organosilicon Chemistry and Material Technology, Ministry of Education, Hangzhou Normal University, Hangzhou 311121, Zhejiang, People's Republic of China.
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Hossain MI, Hasnat MA. Recent advancements in non-enzymatic electrochemical sensor development for the detection of organophosphorus pesticides in food and environment. Heliyon 2023; 9:e19299. [PMID: 37662791 PMCID: PMC10474438 DOI: 10.1016/j.heliyon.2023.e19299] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2023] [Revised: 07/28/2023] [Accepted: 08/17/2023] [Indexed: 09/05/2023] Open
Abstract
Organophosphorus Pesticides (OPPs) are among the extensively used pesticides throughout the world to boost agricultural production. However, persistent residues of these toxic pesticides in various vegetables, fruits, and drinking water poses detrimental health effects. Consequently, the rapid monitoring of these harmful chemicals through simple and cost-effective methods has become crucial. In such an instance, electrochemical methods offer simple, rapid, sensitive, reproducible, and affordable detection pathways. To overcome the limitations associated with electrochemical enzymatic sensors, non-enzymatic sensors have emerged as promising and simpler alternatives. The non-enzymatic sensors have demonstrated superior activity, reaching detection limit up to femto (10-15) molar concentration in recent years, leveraging higher selectivity obtained through the molecularly imprinted polymers, synergistic effects between carbonaceous nanomaterials and metals, metal oxide alloys, and other alternative approaches. Herein, this review paper provides an overview of the recent advancements in the development of non-enzymatic electrochemical sensors for the detection of commonly used OPPs, such as Chlorpyrifos (CHL), Diazinon (DZN), Malathion (MTN), Methyl parathion (MP) and Fenthion (FEN). The design method of the electrodes, electrode functioning mechanism, and their analytical performance metrics, such as limit of detection, sensitivity, selectivity, and linearity range, were reviewed and compared. Furthermore, the existing challenges within this rapidly growing field were discussed along with their potential solutions which will facilitate the fabrication of advanced and sustainable non-enzymatic sensors in the future.
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Affiliation(s)
- Mohammad Imran Hossain
- Electrochemistry & Catalysis Research Laboratory (ECRL), Department of Chemistry, School of Physical Sciences, Shahjalal University of Science and Technology, Sylhet, 3114, Bangladesh
| | - Mohammad A. Hasnat
- Electrochemistry & Catalysis Research Laboratory (ECRL), Department of Chemistry, School of Physical Sciences, Shahjalal University of Science and Technology, Sylhet, 3114, Bangladesh
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Madasamy M, Sahayaraj K, Sayed SM, Al-Shuraym LA, Selvaraj P, El-Arnaouty SA, Madasamy K. Insecticidal Mechanism of Botanical Crude Extracts and Their Silver Nanoliquids on Phenacoccus solenopsis. TOXICS 2023; 11:305. [PMID: 37112532 PMCID: PMC10145954 DOI: 10.3390/toxics11040305] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 02/23/2023] [Revised: 03/21/2023] [Accepted: 03/23/2023] [Indexed: 06/19/2023]
Abstract
In recent years, intensive studies have been carried out on the management of agricultural insect pests using botanical insecticides in order to decrease the associated environmental hazards. Many studies have tested and characterized the toxic action of plant extracts. Four plant extracts (Justicia adhatoda, Ipomea carnea, Pongamia glabra, and Annona squamosa) containing silver nanoparticles (AgNPs) were studied for their effects on Phenacoccus solenopsis Tinsley (Hemiptera: Pseudococcidae) using the leaf dip method. The effects were estimated based on assays of hydrolytic enzyme (amylase, protease, lipase, acid phosphatase, glycosidase, trehalase, phospholipase A2, and invertase) and detoxification enzyme (esterase and lactate dehydrogenase) levels; macromolecular content (total body protein, carbohydrate, and lipid); and protein profile. The results show that the total body of P. solenopsis contains trypsin, pepsin, invertase, lipase, and amylase, whereas J. adathoda and I. carnea aqueous extracts considerably decreased the protease and phospholipase A2 levels, and A. squamosa aqueous extract dramatically increased the trehalase level in a dose-dependent manner. The enzyme levels were dramatically decreased by P. glabura-AgNPs (invertase, protease, trehalase, lipase, and phospholipase A2); I. carnea-AgNPs (invertase, lipase, and phospholipase A2); A. squamosa-AgNPs (protease, phospholipase A2); and J. adathoda-AgNPs (protease, lipase, and acid phosphatase). Plant extracts and their AgNPs significantly reduced P. solenopsis esterase and lactate dehydrogenase levels in a dose-dependent manner. At higher concentrations (10%), all of the investigated plants and their AgNPs consistently decreased the total body carbohydrate, protein, and fat levels. It is clear that the plant extracts, either crude or together with AgNPs, may result in the insects having inadequate nutritional capacity, which will impact on all critical actions of the affected hydrolytic and detoxication enzymes.
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Affiliation(s)
- Mariappan Madasamy
- Crop Protection Research Centre (CPRC), Department of Zoology, St. Xavier’s College, Palayamkottai 627002, India
| | - Kitherian Sahayaraj
- Crop Protection Research Centre (CPRC), Department of Zoology, St. Xavier’s College, Palayamkottai 627002, India
| | - Samy M. Sayed
- Department of Science and Technology, University College-Ranyah, Taif University, P.O. Box 11099, Taif 21944, Saudi Arabia
- Department of Economic Entomology and Pesticides, Faculty of Agriculture, Cairo University, Giza 12613, Egypt
| | - Laila A. Al-Shuraym
- Department of Biology, College of Science, Princess Nourah Bint Abdulrahman University, P.O. Box 84428, Riyadh 11671, Saudi Arabia
| | - Parthas Selvaraj
- Entomology Research Unit, Department of Zoology, St. Xavier’s College, Palayamkottai 627002, India
| | - Sayed-Ashraf El-Arnaouty
- Department of Economic Entomology and Pesticides, Faculty of Agriculture, Cairo University, Giza 12613, Egypt
| | - Koilraj Madasamy
- Crop Protection Research Centre (CPRC), Department of Zoology, St. Xavier’s College, Palayamkottai 627002, India
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Recent progress in homogeneous electrochemical sensors and their designs and applications. Trends Analyt Chem 2022. [DOI: 10.1016/j.trac.2022.116712] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
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5
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Kim TY, Lim MC, Lim JW, Woo MA. Rolling Circle Amplification-based Copper Nanoparticle Synthesis on Cyclic Olefin Copolymer Substrate and Its Application in Aptasensor. BIOTECHNOL BIOPROC E 2022; 27:202-212. [PMID: 35474695 PMCID: PMC9026004 DOI: 10.1007/s12257-021-0220-0] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2021] [Revised: 09/16/2021] [Accepted: 09/19/2021] [Indexed: 11/28/2022]
Abstract
This study aimed to develop a label-free fluorescent aptasensor for the detection of diazinon (DZN) on a cyclic olefin copolymer (COC) substrate. The aptasensor design was based on rolling circle amplification (RCA) technology and the use of self-assembled copper nanoparticles (CuNPs). A dual-function (DF) probe, capable of binding to circular DNA and an aptamer, was designed and immobilized on a COC-bottom 96-well plate. An aptamer was used for selective recognition of DZN, and the specific site of the aptamer that strongly reacted with DZN was successfully identified using circular dichroism (CD) analysis. In presence of DZN, the aptamer and DZN formed a strong complex, thus providing an opportunity for hybridization of the DF probe and circular DNA, thereby initiating an RCA reaction. Repetitive poly thymine (T) sequence with a length of 30-mer, generated in the RCA reaction, served as a template for the synthesis of fluorescent copper nanoparticles, emitting an orange fluorescence signal (at approximately 620 nm) proportional to the amount of RCA product, within 10 min under UV irradiation. The CuNP fluorescence was imaged and quantified using an image analysis software. A linear correlation of the fluorescence signal was confirmed in the DZN concentration range of 0.1–3 ppm, with a detection limit of 0.15 ppm. Adoption of a label-free detection method, utilizing RCA and fluorescent CuNPs on COC substrates, reduced the need for complex equipment and requirements for DZN analysis, thereby representing a simple and rapid sensing method circumventing the limitations of current complex and labor-intensive methods.
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Affiliation(s)
- Tai-Yong Kim
- Research Group of Food Safety and Distribution, Korea Food Research Institute (KFRI), Wanju, Korea
- Department of Food Science and Technology, Jeonbuk National University, Jeonju, Korea
| | - Min-Cheol Lim
- Research Group of Food Safety and Distribution, Korea Food Research Institute (KFRI), Wanju, Korea
| | - Ji Won Lim
- The 4th R&D Institute, 6th Directorate, Agency for Defense Development, Daejeon, Korea
| | - Min-Ah Woo
- Research Group of Food Safety and Distribution, Korea Food Research Institute (KFRI), Wanju, Korea
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6
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Tan J, Geng W, Li J, Wang Z, Zhu S, Wang X. Colorimetric and Fluorescence Dual-Mode Biosensors Based on Peroxidase-Like Activity of the Co3O4 Nanosheets. Front Chem 2022; 10:871013. [PMID: 35480390 PMCID: PMC9037028 DOI: 10.3389/fchem.2022.871013] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2022] [Accepted: 03/09/2022] [Indexed: 11/20/2022] Open
Abstract
The mimic enzyme has become a research hotspot in recent years because of its advantages of high stability, convenient preparation, and low price. In this article, Co3O4 nanosheets synthesized by a simple hydrothermal method possess the characteristics of a peroxidase-like activity. The results demonstrated that 3,3′,5,5′-Tetramethylbenzidine (TMB) could be oxidized by H2O2 to produce a typical blue product (oxTMB) which has a strong absorption at 650 nm wavelength with the help of the Co3O4 nanosheets. Thus, a simple and sensitive colorimetric detection method for H2O2 was established with a good linear relationship (2–200 μM) and a low limit of detection (0.4 μM). Meanwhile, the colorimetric product can effectively quench the fluorescence emitted by Ru(bpy)32+. Therefore, a colorimetric and fluorescence dual detection mode photochemical sensor for H2O2 detection is constructed based on the principle of the inner filter effect (IFE) between the colorimetric product (oxTMB) and Ru(bpy)32+. It can effectively avoid the false positive problem of a single detection mode. In the presence of glucose oxidase, glucose can be catalyzed to produce gluconic acid and H2O2; therefore, the sensor can also be used for the determination of glucose with a good linear relationship (0.02–2 μM) and a low limit of detection (5 nM). Experimental results showed that the sensor has a high sensitivity and strong anti-interference ability which can be used for the detection of actual samples.
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Affiliation(s)
- Jingying Tan
- College of Chemistry and Pharmaceutical Sciences, Qingdao Agricultural University, Qingdao, China
| | - Weifu Geng
- College of Plant Health and Medicine, Qingdao Agricultural University, Qingdao, China
| | - Junde Li
- Hospital of Qingdao Agricultural University, Qingdao Agricultural University, Qingdao, China
| | - Zhen Wang
- College of Chemistry and Pharmaceutical Sciences, Qingdao Agricultural University, Qingdao, China
| | - Shaohao Zhu
- College of Chemistry and Pharmaceutical Sciences, Qingdao Agricultural University, Qingdao, China
| | - Xiuzhong Wang
- College of Chemistry and Pharmaceutical Sciences, Qingdao Agricultural University, Qingdao, China
- *Correspondence: Xiuzhong Wang,
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7
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Liu P, Zhao M, Zhu H, Zhang M, Li X, Wang M, Liu B, Pan J, Niu X. Dual-mode fluorescence and colorimetric detection of pesticides realized by integrating stimulus-responsive luminescence with oxidase-mimetic activity into cerium-based coordination polymer nanoparticles. JOURNAL OF HAZARDOUS MATERIALS 2022; 423:127077. [PMID: 34482084 DOI: 10.1016/j.jhazmat.2021.127077] [Citation(s) in RCA: 41] [Impact Index Per Article: 20.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/13/2021] [Revised: 08/18/2021] [Accepted: 08/27/2021] [Indexed: 06/13/2023]
Abstract
The great threat of pesticide residues to the environment and human health has drawn widespread interest to explore approaches for pesticide monitoring. Compared to commonly developed single-signal pesticide assays, multi-mode detection with inherent self-validation and self-correction is expected to offer more reliable and anti-interference results. However, how to realize multi-mode analysis of pesticides still remains challenging. Herein, we propose a dual-mode fluorescence and colorimetric method for pesticide determination by integrating stimulus-responsive luminescence with oxidase-mimetic activity into cerium-based coordination polymer nanoparticles (CPNs(Ⅳ)). The CPNs(Ⅳ) exhibit good oxidase-like activity of catalyzing the colorless 3,3',5,5'-tetramethylbenzidine (TMB) oxidation to its blue oxide, offering a visible color signal; by employing acid phosphatase (ACP) to hydrolyze ascorbic acid 2-phosphate (AAP), the generated ascorbic acid (AA) can chemically reduce the CPNs(Ⅳ) to CPNs(Ⅲ), which exhibit a remarkable fluorescence signal but lose the oxidase-mimicking ability to trigger the TMB chromogenic reaction; when pesticides exist, the enzymatic activity of ACP is restrained and the hydrolysis of AAP to AA is blocked, leading to the recovery of the catalytic TMB chromogenic reaction but the suppression of the fluorescence signal of CPNs(Ⅲ). According to this principle, by taking malathion as a pesticide model, dual-mode 'off-on-off' fluorescence and 'on-off-on' colorimetric detection of the pesticide with good sensitivity was realized. Excellent interference-tolerance and reliability were verified by applying it to analyze the target in real sample matrices. With good performance and practicability, the proposed dual-mode approach shows great potential in the facile and reliable monitoring of pesticide residues.
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Affiliation(s)
- Peng Liu
- Institute of Green Chemistry and Chemical Technology, School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang 212013, China
| | - Menghao Zhao
- Institute of Green Chemistry and Chemical Technology, School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang 212013, China
| | - Hengjia Zhu
- Institute of Green Chemistry and Chemical Technology, School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang 212013, China; School of Agricultural Engineering, Jiangsu University, Zhenjiang 212013, China
| | - Mingliang Zhang
- Institute of Green Chemistry and Chemical Technology, School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang 212013, China
| | - Xin Li
- Institute of Green Chemistry and Chemical Technology, School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang 212013, China
| | - Mengzhu Wang
- Institute of Green Chemistry and Chemical Technology, School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang 212013, China
| | - Bangxiang Liu
- Institute of Green Chemistry and Chemical Technology, School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang 212013, China
| | - Jianming Pan
- Institute of Green Chemistry and Chemical Technology, School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang 212013, China
| | - Xiangheng Niu
- Institute of Green Chemistry and Chemical Technology, School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang 212013, China; Key Laboratory of Functional Molecular Solids of Ministry of Education, Anhui Normal University, Wuhu 241002, China; State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology, Harbin 150090, China.
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8
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Wang W, Wang X, Cheng N, Luo Y, Lin Y, Xu W, Du D. Recent advances in nanomaterials-based electrochemical (bio)sensors for pesticides detection. Trends Analyt Chem 2020. [DOI: 10.1016/j.trac.2020.116041] [Citation(s) in RCA: 58] [Impact Index Per Article: 14.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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9
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Li D, Li Y, Luo F, Qiu B, Lin Z. Ultrasensitive Homogeneous Electrochemiluminescence Biosensor for a Transcription Factor Based on Target-Modulated Proximity Hybridization and Exonuclease III-Powered Recycling Amplification. Anal Chem 2020; 92:12686-12692. [DOI: 10.1021/acs.analchem.0c03086] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- Dan Li
- Ministry of Education Key Laboratory for Analytical Science of Food Safety and Biology, Fujian Provincial Key Laboratory of Analysis and Detection for Food Safety, College of Chemistry, Fuzhou University, Fuzhou, Fujian 350116, China
| | - Ya Li
- Department of Ultrasound, Fourth People’s Hospital of Taizhou City, Jianshu, 225300, China
| | - Fang Luo
- Ministry of Education Key Laboratory for Analytical Science of Food Safety and Biology, Fujian Provincial Key Laboratory of Analysis and Detection for Food Safety, College of Chemistry, Fuzhou University, Fuzhou, Fujian 350116, China
- College of Biological Science and Engineering, Fuzhou University, Fuzhou, Fujian 350116, China
| | - Bin Qiu
- Ministry of Education Key Laboratory for Analytical Science of Food Safety and Biology, Fujian Provincial Key Laboratory of Analysis and Detection for Food Safety, College of Chemistry, Fuzhou University, Fuzhou, Fujian 350116, China
| | - Zhenyu Lin
- Ministry of Education Key Laboratory for Analytical Science of Food Safety and Biology, Fujian Provincial Key Laboratory of Analysis and Detection for Food Safety, College of Chemistry, Fuzhou University, Fuzhou, Fujian 350116, China
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Xu L, Li J, Zhang J, Sun J, Gan T, Liu Y. A disposable molecularly imprinted electrochemical sensor for the ultra-trace detection of the organophosphorus insecticide phosalone employing monodisperse Pt-doped UiO-66 for signal amplification. Analyst 2020; 145:3245-3256. [PMID: 32211645 DOI: 10.1039/d0an00278j] [Citation(s) in RCA: 28] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
In this work, a disposable molecularly imprinted electrochemical sensor was developed towards the highly sensitive and selective detection of the organophosphorus insecticide phosalone (PAS), employing a home-made carbon paste microelectrode (CPME) modified with a Zr-based metal-organic framework catalyst (Pt-UiO-66) and a mesoporous structured conductive molecularly imprinted polymer (MIP). Pt-UiO-66 octahedra with isolated dispersed Pt nanoparticle active sites were firstly incorporated into the CPME to provide a remarkably amplified signal for voltammetric determination. The mesoporous MIP was then synthesized onto the Pt-UiO-66/CPME via electropolymerization and a subsequent sol-gel process, which could bind the PAS template molecules through hydrogen bond, coordinate bonding, hydrophobic interaction, and π-π stacking interaction. Morphological, structural, and electrochemical characterization studies revealed that this nano-sized MIP provided excellent features for PAS detection, including high porosity, large surface area, enhanced electron-transport ability, greatly improved diffusion capacity, and strong recognition specificity. Therefore, the resulting sensor exhibited an outstanding linearly proportional concentration domain of 0.50 nM-20 μM, low detection limit of 0.078 nM, marked selectivity over certain interferences with similar configurations, considerable repeatability, reproducibility, and stability for the analysis of PAS. Moreover, the sensor was successfully applied for the determination of PAS in agricultural products and environmental samples with results in good compatibility with a chromatographic method, indicative of the high reliability and practicability. Such an electrochemical sensor might open a novel window for the investigation of selective sensing of small organic species from their analogues coupled with the molecular imprinting technique.
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Affiliation(s)
- Liping Xu
- College of Chemistry and Chemical Engineering, Institute for Conservation and Utilization of Agro-Bioresources in Dabie Mountains & Henan Key Laboratory of Utilization of Non-Metallic Mineral in the South of Henan, Xinyang Normal University, Xinyang, 464000, China.
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11
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Jia Z, Luo Y, Wen H, Huang S, Du X, Xue W. A Probe for Fluorescence Detection of the Acetylcholinesterase Activity Based on Molecularly Imprinted Polymers Coated Carbon Dots. Chem Pharm Bull (Tokyo) 2019; 67:795-800. [PMID: 31061298 DOI: 10.1248/cpb.c18-00944] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
This paper presents a new probe for fluorescence detection of the acetylcholinesterase (AChE) activity based on molecularly imprinted polymer (MIP) coated carbon dots (C-dots) composite. The C-dots were hydrothermally synthesized with grafted silica surface and sealed with molecularly imprinted polymers in silica pores (MIP@C-dots) in situ. Removed the original template molecules, the MIP@C-dots composite exhibits quite high selectivity for acetylthiocholine (ACh). With AChE, its substrate ACh will be hydrolyzed into thiocholine and the fluorescence signals exhibit a dramatic decrease at 465 nm, Under optimal conditions, the fluorescent probe shows sensitive responses to AChE in the range of 0.01-0.6 mU/mL. The detection limits of AChE are as low as 3 µU/mL. These experiments results validate the novel fluorescent probe based on MIP@C-dots composite, paving a new way to evaluation of AChE activity and Screening inhibitors.
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Affiliation(s)
- Zhao Jia
- School of Chemical Engineering, Northwest University.,Shangluo University
| | - Yane Luo
- College of Food Science and Technology, Northwest University
| | - Huiyun Wen
- School of Chemical Engineering, Northwest University
| | - Saipeng Huang
- School of Chemical Engineering, Northwest University
| | - Xin Du
- School of Chemical Engineering, Northwest University
| | - Weiming Xue
- School of Chemical Engineering, Northwest University
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12
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Yao Y, Liu Y, Zhang H, Wang X. A highly sensitive and low-background fluorescence assay for pesticides residues based on hybridization chain reaction amplification assisted by magnetic separation. Methods Appl Fluoresc 2019; 7:035006. [PMID: 31042679 DOI: 10.1088/2050-6120/ab1e7a] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
Due to the concern over food safety, it is important to detect the pesticides residues in agricultural products. Here, a highly sensitive and low background fluorescent strategy for the detection of pesticides residues has been developed. The fluorescence intensity of N-methyl mesoporphyrin IX (NMM) binding G-quadruplex could be turn off because of inhibiting effect of the pesticides on the acetylcholinesterase (AChE) activity. For that, four single-stranded DNAs (named linker, trigger, H1 and H2, respectively) are rational designed and T-Hg-T mismatches duplex DNAs as a recognizer combined with the separation of magnetic beads. The design of hybridization chain reaction (HCR) amplification strategy assisted by magnetic separation has been adopted to improve the detection sensitivity. In the presence of pesticides, the amount of the thiol group generated by hydrolysis reaction of acetylcholine (ACh) is reduced, lead to release of less trigger DNA. Therefor subsequent HCR process is retarded with decreased fluorescence intensity. The reduced fluorescence intensity has a quantitative relationship with the pesticide concentration. The limit of detection of chlorpyrifos was estimated to be 2.0 ng ml-1. It has been applied to detect the pesticides residues in real samples.
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Affiliation(s)
- Yueyue Yao
- College of Chemistry and Pharmaceutical Sciences, Qingdao Agricultural University, Qingdao 266109, People's Republic of China
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13
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Xiong Z, Liu Q, Yun W, Hu Y, Wang X, Yang L. Dual-entropy-driven catalytic amplification reaction for ultra-sensitive and visible detection of Hg2+ in water based on thymine–Hg2+–thymine coordination chemistry. Analyst 2019; 144:5143-5149. [DOI: 10.1039/c9an00882a] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
An ultra-sensitive and visible Hg2+ detection strategy was established.
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Affiliation(s)
- Zhengwei Xiong
- School of Biological and Chemical Engineering
- Chongqing University of Education
- Chongqing
- China
| | - Qiulin Liu
- School of Pharmaceutical Sciences
- Wenzhou Medical University
- Wenzhou
- China
- Chongqing Key Laboratory of Catalysis and New Environmental Materials
| | - Wen Yun
- Chongqing Key Laboratory of Catalysis and New Environmental Materials
- College of Environment and Resources
- Chongqing Technology and Business University
- Chongqing
- China
| | - Yuan Hu
- Chongqing Key Laboratory of Catalysis and New Environmental Materials
- College of Environment and Resources
- Chongqing Technology and Business University
- Chongqing
- China
| | - Xingmin Wang
- Chongqing Key Laboratory of Catalysis and New Environmental Materials
- College of Environment and Resources
- Chongqing Technology and Business University
- Chongqing
- China
| | - Lizhu Yang
- School of Pharmaceutical Sciences
- Wenzhou Medical University
- Wenzhou
- China
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Harroun SG, Prévost-Tremblay C, Lauzon D, Desrosiers A, Wang X, Pedro L, Vallée-Bélisle A. Programmable DNA switches and their applications. NANOSCALE 2018; 10:4607-4641. [PMID: 29465723 DOI: 10.1039/c7nr07348h] [Citation(s) in RCA: 80] [Impact Index Per Article: 13.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/11/2023]
Abstract
DNA switches are ideally suited for numerous nanotechnological applications, and increasing efforts are being directed toward their engineering. In this review, we discuss how to engineer these switches starting from the selection of a specific DNA-based recognition element, to its adaptation and optimisation into a switch, with applications ranging from sensing to drug delivery, smart materials, molecular transporters, logic gates and others. We provide many examples showcasing their high programmability and recent advances towards their real life applications. We conclude with a short perspective on this exciting emerging field.
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Affiliation(s)
- Scott G Harroun
- Laboratory of Biosensors & Nanomachines, Département de Chimie, Université de Montréal, Montréal, Québec H3C 3J7, Canada.
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15
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Gai P, Zhang S, Yu W, Li H, Li F. Light-driven self-powered biosensor for ultrasensitive organophosphate pesticide detection via integration of the conjugated polymer-sensitized CdS and enzyme inhibition strategy. J Mater Chem B 2018; 6:6842-6847. [DOI: 10.1039/c8tb02286k] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
A new light-driven self-powered biosensor based on a photoelectrochemical enzymatic fuel cell was proposed for the ultrasensitive detection of organophosphate pesticides.
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Affiliation(s)
- Panpan Gai
- College of Chemistry and Pharmaceutical Sciences
- Qingdao Agricultural University
- Qingdao 266109
- P. R. China
| | - Shuxia Zhang
- College of Chemistry and Pharmaceutical Sciences
- Qingdao Agricultural University
- Qingdao 266109
- P. R. China
| | - Wen Yu
- College of Chemistry and Pharmaceutical Sciences
- Qingdao Agricultural University
- Qingdao 266109
- P. R. China
| | - Haiyin Li
- College of Chemistry and Pharmaceutical Sciences
- Qingdao Agricultural University
- Qingdao 266109
- P. R. China
| | - Feng Li
- College of Chemistry and Pharmaceutical Sciences
- Qingdao Agricultural University
- Qingdao 266109
- P. R. China
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16
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Ghodsi J, Rafati AA. A voltammetric sensor for diazinon pesticide based on electrode modified with TiO2 nanoparticles covered multi walled carbon nanotube nanocomposite. J Electroanal Chem (Lausanne) 2017. [DOI: 10.1016/j.jelechem.2017.11.003] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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17
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Lu L, Su H, Li F. Ultrasensitive Homogeneous Electrochemical Detection of Transcription Factor by Coupled Isothermal Cleavage Reaction and Cycling Amplification Based on Exonuclease III. Anal Chem 2017; 89:8328-8334. [DOI: 10.1021/acs.analchem.7b01538] [Citation(s) in RCA: 47] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Affiliation(s)
- Lihua Lu
- College of Chemistry and
Pharmaceutical Sciences, Qingdao Agricultural University, Qingdao 266109, People’s Republic of China
| | - Huijuan Su
- College of Chemistry and
Pharmaceutical Sciences, Qingdao Agricultural University, Qingdao 266109, People’s Republic of China
| | - Feng Li
- College of Chemistry and
Pharmaceutical Sciences, Qingdao Agricultural University, Qingdao 266109, People’s Republic of China
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18
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Liu X, Song M, Hou T, Li F. Label-Free Homogeneous Electroanalytical Platform for Pesticide Detection Based on Acetylcholinesterase-Mediated DNA Conformational Switch Integrated with Rolling Circle Amplification. ACS Sens 2017; 2:562-568. [PMID: 28723196 DOI: 10.1021/acssensors.7b00081] [Citation(s) in RCA: 70] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
This study addresses the need for sensitive pesticide assay by reporting a new label-free and immobilization-free homogeneous electroanalytical strategy, which combines acetylcholinesterase (AChE)-catalyzed hydrolysis product-mediated DNA conformational switch and rolling circle amplification (RCA) to detect organophosphorous and carbamate pesticides in a "signal-on" mode. When target pesticides were present, AChE activity was inhibited and could not trigger the following DNA conformational change and the RCA reaction, which results in numerous methylene blue (MB) molecules in a free state, generating a strong electrochemical response. This proposed strategy was highly sensitive for omethoate detection with a detection limit as low as 2.1 μg/L and a linear range from 10 to 10 000 μg/L. Furthermore, this strategy was demonstrated to be applicable for pesticide detection in real samples. Thus, this novel label-free homogeneous electroanalytical strategy holds great promise for pesticide detection and can be further exploited for sensing applications in the environment and the food safety field.
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Affiliation(s)
- Xiaojuan Liu
- College of Chemistry and
Pharmaceutical Sciences, Qingdao Agricultural University, Qingdao 266109, People’s Republic of China
| | - Mengmeng Song
- College of Chemistry and
Pharmaceutical Sciences, Qingdao Agricultural University, Qingdao 266109, People’s Republic of China
| | - Ting Hou
- College of Chemistry and
Pharmaceutical Sciences, Qingdao Agricultural University, Qingdao 266109, People’s Republic of China
| | - Feng Li
- College of Chemistry and
Pharmaceutical Sciences, Qingdao Agricultural University, Qingdao 266109, People’s Republic of China
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19
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Wang S, Wang X, Chen X, Cao X, Cao J, Xiong X, Zeng W. A novel upconversion luminescence turn-on nanosensor for ratiometric detection of organophosphorus pesticides. RSC Adv 2016. [DOI: 10.1039/c6ra05978c] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
An upconversion luminescence “turn-on” nanosensor for the ratiometric and sensitive detection of organophosphorus pesticides was fabricated.
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Affiliation(s)
- Shuailiang Wang
- School of Pharmaceutical Sciences
- Central South University
- PR China
- Molecular Imaging Research Center
- Central South University
| | - Xiaobo Wang
- School of Pharmaceutical Sciences
- Central South University
- PR China
- Molecular Imaging Research Center
- Central South University
| | - Xingxiang Chen
- School of Pharmaceutical Sciences
- Central South University
- PR China
- Molecular Imaging Research Center
- Central South University
| | - Xiaozheng Cao
- School of Pharmaceutical Sciences
- Central South University
- PR China
- Molecular Imaging Research Center
- Central South University
| | - Jing Cao
- School of Pharmaceutical Sciences
- Central South University
- PR China
- Molecular Imaging Research Center
- Central South University
| | - Xiaofeng Xiong
- School of Pharmaceutical Sciences
- Central South University
- PR China
- Molecular Imaging Research Center
- Central South University
| | - Wenbin Zeng
- School of Pharmaceutical Sciences
- Central South University
- PR China
- Molecular Imaging Research Center
- Central South University
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