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Xiao Y, Peng T, Luo Y, Jiao L, Huang T, Li H. Facile, green and scalable synthesis of single-layer manganese dioxide nanosheets and its application for GSH and cTnI colorimetric detection. Analyst 2024. [PMID: 38980709 DOI: 10.1039/d4an00689e] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/10/2024]
Abstract
Manganese dioxide (MnO2) nanosheets possess unique physical and chemical properties, making them widely applicable in various fields, such as chemistry and biomedicine. Although MnO2 nanosheets are produced using bottom-up wet chemistry synthesis methods, their scale is below the gram level and requires a long processing time, restricting their effective scale-up from laboratory to market. We report a facile, green and scalable synthesis of MnO2 nanosheets by mixing Shiranui mandarin orange juice and KMnO4 for 30 minutes. We produced more than one gram (1.095) of MnO2 nanosheets with a 0.65 nm mean thickness and a 50 nm mean lateral size. Furthermore, we established a visual colorimetric biosensing strategy based on MnO2 nanosheets for the assay of glutathione (GSH) and cardiac troponin I (cTnI), offering high sensitivity and feasibility in clinical samples. For GSH, the limit of detection was 0.08 nM, and for cTnI, it was 0.70 pg mL-1. Meanwhile, the strategy can be used for real-time analysis by applying a smartphone-enabled biosensing strategy, which can provide point-of-care testing in remote areas.
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Affiliation(s)
- Yao Xiao
- College of Optoelectronics Technology, Shuangliu Industry College, Information Materials and Device Applications Key Laboratory of Sichuan Provincial Universities, Chengdu University of Information Technology, Chengdu 610225, China.
| | - TaoMei Peng
- College of Optoelectronics Technology, Shuangliu Industry College, Information Materials and Device Applications Key Laboratory of Sichuan Provincial Universities, Chengdu University of Information Technology, Chengdu 610225, China.
| | - YuXiao Luo
- College of Optoelectronics Technology, Shuangliu Industry College, Information Materials and Device Applications Key Laboratory of Sichuan Provincial Universities, Chengdu University of Information Technology, Chengdu 610225, China.
| | - Lei Jiao
- Institute of Hybrid Materials, College of Materials Science and Engineering, Qingdao University, Qingdao, 266071, P. R. China
| | - TaiXing Huang
- College of Optoelectronics Technology, Shuangliu Industry College, Information Materials and Device Applications Key Laboratory of Sichuan Provincial Universities, Chengdu University of Information Technology, Chengdu 610225, China.
| | - He Li
- College of Optoelectronics Technology, Shuangliu Industry College, Information Materials and Device Applications Key Laboratory of Sichuan Provincial Universities, Chengdu University of Information Technology, Chengdu 610225, China.
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2
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Wang F, Zhu Y, Qian L, Yin Y, Yuan Z, Dai Y, Zhang T, Yang D, Qiu F. Lamellar Ti 3C 2 MXene composite decorated with platinum-doped MoS 2 nanosheets as electrochemical sensing functional platform for highly sensitive analysis of organophosphorus pesticides. Food Chem 2024; 459:140379. [PMID: 38991437 DOI: 10.1016/j.foodchem.2024.140379] [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: 05/14/2024] [Revised: 06/26/2024] [Accepted: 07/05/2024] [Indexed: 07/13/2024]
Abstract
Precisely detecting organophosphorus pesticides (OPs) is paramount in upholding human safety and environmental preservation, especially in food safety. Herein, an electrochemical acetylcholinesterase (AChE) sensing platform entrapped in chitosan (Chit) on the glassy carbon electrodes (GCEs) decorated with Pt/MoS2/Ti3C2 MXene (Pt/MoS2/TM) was constructed for the detection of chlorpyrifos. It is worth noting that Pt/MoS2/TM possesses good biocompatibility, remarkable electrical conductivity, environmental stability and large specific surface area. Besides, the heterostructure formed by the composite of TM and MoS2 improves the conductivity and maintains the original structure, which is conducive to improving the electrochemical property. The coordination effect between the individual components enables the even distribution of functional components and enhances the electrochemical performance of the biosensor (AChE-Chit/Pt/MoS2/TM). Under optimal efficiency and sensitivity, the AChE-Chit/Pt/MoS2/TM/GCE sensing platform exerts comparable analytical performance and a wide concentration range of chlorpyrifos from 10-12 to 10-6 M as well as a low limit of detection (4.71 × 10-13 M). Furthermore, the biosensor is utilized to detect OPs concerning three kinds of fruits and vegetables with good feasibility and recoveries (94.81% to 104.0%). This work would provide a new scheme to develop high-sensitivity sensors based on the two-dimensional nanosheet/laminar hybrid structure for practical applications in environmental monitoring and agricultural product detection.
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Affiliation(s)
- Fei Wang
- School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang 212013, China
| | - Yao Zhu
- School of Agricultural Engineering, Jiangsu University, Zhenjiang 212013, China.
| | - Long Qian
- School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang 212013, China
| | - Yuhao Yin
- School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang 212013, China
| | - Ziyu Yuan
- School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang 212013, China
| | - Yuting Dai
- School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang 212013, China
| | - Tao Zhang
- School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang 212013, China
| | - Dongya Yang
- School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang 212013, China
| | - Fengxian Qiu
- School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang 212013, China.
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3
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Yang CL, Yu LH, Pang YH, Shen XF. A ratiometric fluorescence sensor for detection of organophosphorus pesticides based on enzyme-regulated multifunctional Fe-based metal-organic framework. Talanta 2024; 278:126516. [PMID: 38972276 DOI: 10.1016/j.talanta.2024.126516] [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: 03/30/2024] [Revised: 05/31/2024] [Accepted: 07/03/2024] [Indexed: 07/09/2024]
Abstract
The residues of organophosphorus pesticides (OPs) are increasing environmental pollution and public health concerns. Thus, the development of simple, convenient and sensitive method for detection of OPs is crucial. Herein, a multifunctional Fe-based MOF with fluorescence, catalytic and adsorption, is synthesized by a simple one-pot hydrothermal method. The ratiometric fluorescence sensor for detection of OPs is constructed by using only one multifunctional sensing material. The NH2-MIL-101(Fe) is able catalyze the o-phenylenediamine (OPD) into 2,3-diaminophenazine (DAP) in the presence of H2O2. The generated DAP can significantly quench the intrinsic fluorescence of NH2-MIL-101(Fe) by the fluorescence resonance energy transfer (FRET) and internal filtration effect (IFE), while producing a new measurable fluorescence. Without immobilization or molecular imprinting, pyrophosphate ion (PPi) can inhibit the peroxidase-like activity of the NH2-MIL-101(Fe) by chelating with Fe3+/Fe2+ redox couple. Moreover, PPi can also be hydrolyzed by alkaline phosphatase (ALP), the presence of OPs inhibits the activity of ALP, resulting in the increase of extra PPi preservation and signal changes of ratiometric fluorescence, the interactions of ALP with different OPs are explored by molecular docking, the OPs (e.g., glyphosate) interact with crucial amino acid residues (Asp, Ser, Ala, Lys and Arg) are indicated. The proposed sensor exhibits excellent detection performance for OPs with the detection limit of 18.7 nM, which provides a promising strategy for detection of OPs.
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Affiliation(s)
- Cheng-Lin Yang
- School of Food Science and Technology, Jiangnan University, Wuxi, 214122, China
| | - Li-Hong Yu
- School of Food Science and Technology, Jiangnan University, Wuxi, 214122, China
| | - Yue-Hong Pang
- School of Food Science and Technology, Jiangnan University, Wuxi, 214122, China
| | - Xiao-Fang Shen
- School of Food Science and Technology, Jiangnan University, Wuxi, 214122, China.
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4
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Zhang X, Wang SQ, Zhang Q, Li H, Yu R. "On-On-Off" Recyclable Fluorescence Battery for Direct and Selective Detection of Glyphosate and Cu 2. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2024; 40:13256-13264. [PMID: 38860683 DOI: 10.1021/acs.langmuir.4c01436] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2024]
Abstract
Residues of environmental organophosphorus pesticides (OPs) will seriously endanger human health. Most reported OP sensors utilized the restrictions capacity of OPs on the catalytic capacity of acetylcholinesterase (AChE) to acetylthiocholine chloride (ATCh), which suffers from high costs, weak stability, long reaction time, and unrecyclable. Herein, a recyclable strategy was proposed for selective and sensitive detection of glyphosate (Gly). The weak fluorescence of UIO-66-NH2 at 450 nm was enhanced almost 10-fold after reacting with Gly because of the rotation-restricted emission enhancement mechanism. Moreover, inspired by the process of charging and discharging the batteries, we introduced Cu2+ to chelate with Gly. Because of the strong chelation between Cu2+ and Gly, the Gly was removed from UIO-66-NH2, which resulted in the quenching of fluorescence intensity and making UIO-66-NH2 recycle. This method proposed is fast, recyclable, easily conducted, and with a low 0.33 μM LOD in dd H2O based on 3σ/S. The recovery rates of Gly in tap water ranged from 93.07 to 104.35% within a satisfied 7.75% RSD. The Cu2+ LOD is 0.01 mM based on 3σ/S and 94.37-118.34% recovery rates within 6.48% RSD in tap water. We believe that the findings in this work provide a meaningful and promising strategy to detect Gly and Cu2+ in real samples. This sensor first successfully achieves the recycling use of the material in OP fluorescence detection, which greatly decreases the cost of the designed sensor and reduces the possibility of secondary pollution to the environment, broadens a new circulation dimension of fluorescence detection methods in detecting OPs, and has the potential to remove glyphosate from water. It also provides a method to utilize functionalized metal-organic frameworks to establish various sensors.
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Affiliation(s)
- Xinyi Zhang
- Key Lab of Fluorine and Silicon for Energy Materials and Chemistry of Ministry of Education, College of Chemistry and Chemical Engineering, Jiangxi Normal University, Nanchang 330022, P.R. China
| | - Su Qin Wang
- Key Lab of Fluorine and Silicon for Energy Materials and Chemistry of Ministry of Education, College of Chemistry and Chemical Engineering, Jiangxi Normal University, Nanchang 330022, P.R. China
| | - Qianya Zhang
- Key Lab of Fluorine and Silicon for Energy Materials and Chemistry of Ministry of Education, College of Chemistry and Chemical Engineering, Jiangxi Normal University, Nanchang 330022, P.R. China
| | - Hongbo Li
- Key Lab of Fluorine and Silicon for Energy Materials and Chemistry of Ministry of Education, College of Chemistry and Chemical Engineering, Jiangxi Normal University, Nanchang 330022, P.R. China
| | - Ruqin Yu
- State Key Laboratory for Chemo/Biosensing and Chemometrics, Hunan University, Changsha 410082, P.R. China
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5
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Zhang J, Hu H, Wang J, Lu K, Zhou Y, Zhao L, Peng J. Gold nanoclusters-based fluorescence sensor array for herbicides qualitative and quantitative analysis. Anal Chim Acta 2024; 1298:342380. [PMID: 38462337 DOI: 10.1016/j.aca.2024.342380] [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: 12/18/2023] [Revised: 02/11/2024] [Accepted: 02/13/2024] [Indexed: 03/12/2024]
Abstract
Herbicides have been extensively used around the world, which poses a potential hazard to humans and wildlife. Accurate detection of herbicides is crucial for the environment and human health. Herein, a simple and sensitive fluorescence sensor array was constructed for discrimination and identification of herbicides. Fluorescent gold nanoclusters modified with 11-mercaptoundecanoic acid or reduced glutathione were prepared, respectively. Metal ions quenched the fluorescence of nanoclusters through coordination and leading to the aggregation of gold nanoclusters. The addition of auxin herbicides (2,4-dichlorophenoxyacetic acid, 2-methyl-4-chlorophenoxyacetic acid, decamba, picloram, quinclorac) restored the fluorescence of nanoclusters with different degrees. The mechanism study showed auxin herbicides can bind with metal ions and re-disperse the gold nanoclusters from the aggregation state. The "on-off-on" fluorescent sensor array was constructed basic on above detection mechanism. Combined with principal component analysis (PCA) and hierarchical cluster analysis (HCA) methods, auxin herbicides are well separated on 2D/3D PCA score plots and HCA dendrogram in the range of 40-500 μm. In addition, the fluorescence sensor array performed successful in detecting real samples and blind samples. The developed sensor system shows a promising in practical detection of herbicides.
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Affiliation(s)
- Jingyu Zhang
- State Key Laboratory of Natural Medicines, Key Laboratory of Drug Quality Control and Pharmacovigilance, Ministry of Education, School of Basic Medical Sciences and Clinical Pharmacy, China Pharmaceutical University, Nanjing, Jiangsu, 211198, China
| | - Huihui Hu
- State Key Laboratory of Natural Medicines, Key Laboratory of Drug Quality Control and Pharmacovigilance, Ministry of Education, School of Basic Medical Sciences and Clinical Pharmacy, China Pharmaceutical University, Nanjing, Jiangsu, 211198, China
| | - Jian Wang
- State Key Laboratory of Natural Medicines, Key Laboratory of Drug Quality Control and Pharmacovigilance, Ministry of Education, School of Basic Medical Sciences and Clinical Pharmacy, China Pharmaceutical University, Nanjing, Jiangsu, 211198, China
| | - Keqiang Lu
- State Key Laboratory of Natural Medicines, Key Laboratory of Drug Quality Control and Pharmacovigilance, Ministry of Education, School of Basic Medical Sciences and Clinical Pharmacy, China Pharmaceutical University, Nanjing, Jiangsu, 211198, China
| | - Yunyun Zhou
- State Key Laboratory of Natural Medicines, Key Laboratory of Drug Quality Control and Pharmacovigilance, Ministry of Education, School of Basic Medical Sciences and Clinical Pharmacy, China Pharmaceutical University, Nanjing, Jiangsu, 211198, China.
| | - Lingzhi Zhao
- State Key Laboratory of Natural Medicines, Key Laboratory of Drug Quality Control and Pharmacovigilance, Ministry of Education, School of Basic Medical Sciences and Clinical Pharmacy, China Pharmaceutical University, Nanjing, Jiangsu, 211198, China.
| | - Juanjuan Peng
- State Key Laboratory of Natural Medicines, Key Laboratory of Drug Quality Control and Pharmacovigilance, Ministry of Education, School of Basic Medical Sciences and Clinical Pharmacy, China Pharmaceutical University, Nanjing, Jiangsu, 211198, China.
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6
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Dai Y, Xu W, Wen X, Fan H, Zhang Q, Zhang J, Zhang H, Zhu W, Hong J. Smartphone-assisted hydrogel platform based on BSA-CeO 2 nanoclusters for dual-mode determination of acetylcholinesterase and organophosphorus pesticides. Mikrochim Acta 2024; 191:185. [PMID: 38451330 DOI: 10.1007/s00604-024-06268-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2023] [Accepted: 02/17/2024] [Indexed: 03/08/2024]
Abstract
A dual-mode sensor was developed for detecting acetylcholinesterase (AChE) and organophosphorus pesticides (OPs) via bifunctional BSA-CeO2 nanoclusters (NCs) with oxidase-mimetic activity and fluorescence property. The dual-mode sensor has the characteristics of self-calibration and self-verification, meeting the needs of different detection conditions and provide more accurate results. The colorimetric sensor and fluorescence sensor have been successfully used for detecting AChE with limit of detection (LOD) of 0.081 mU/mL and 0.056 mU/mL, respectively, while the LOD for OPs were 0.9 ng/mL and 0.78 ng/mL, respectively. The recovery of AChE was 93.9-107.2% and of OPs was 95.8-105.0% in actual samples. A novel strategy was developed to monitor pesticide residues and detect AChE level, which will motivate future work to explore the potential applications of multifunctional nanozymes.
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Affiliation(s)
- Yin Dai
- School of Pharmacy, Nanjing Medical University, Nanjing, 211166, Jiangsu, China
| | - Wei Xu
- Jiangsu Provincial Hospital of Chinese Medicine, Nanjing, 210004, Jiangsu, China
| | - Xinyi Wen
- School of Pharmacy, Nanjing Medical University, Nanjing, 211166, Jiangsu, China
| | - Huizhu Fan
- School of Pharmacy, Nanjing Medical University, Nanjing, 211166, Jiangsu, China
| | - Qing Zhang
- School of Pharmacy, Nanjing Medical University, Nanjing, 211166, Jiangsu, China
| | - Jun Zhang
- School of Pharmacy, Nanjing Medical University, Nanjing, 211166, Jiangsu, China
| | - Hongsong Zhang
- Department of Cardiology, Nanjing First Hospital, Nanjing Medical University, Nanjing, 210006, Jiangsu, China
| | - Wanying Zhu
- School of Pharmacy, Nanjing Medical University, Nanjing, 211166, Jiangsu, China
| | - Junli Hong
- School of Pharmacy, Nanjing Medical University, Nanjing, 211166, Jiangsu, China.
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7
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Ge Z, Zhao Y, Li J, Si Z, Du W, Su H. Multifunctional molecularly imprinted nanozymes with improved enrichment and specificity for organic and inorganic trace compounds. NANOSCALE 2024; 16:2608-2620. [PMID: 38226643 DOI: 10.1039/d3nr03968d] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/17/2024]
Abstract
Although nanozymes exhibit properties superior to those of natural enzymes and conventional engineered enzymes, the development of highly specific nanozymes remains a challenge. New yolk-shell Fe3O4 molecularly imprinted (MIP@void@Fe3O4) nanozymes with peroxidase-like activity were developed by modelling the substrate channels of natural enzymes through molecular imprinting techniques and interfacial affinity modifications in this study. To establish a platform technology for the adsorption and determination of inorganic and organic contaminants, lead ion (Pb2+) and diazinon (DIZ), respectively, were selected as imprinting templates, and a hollow mesoporous shell was synthesized. The as-prepared MIP@void@Fe3O4 nanozymes, characterized using TEM, HRTEM, SEM, FT-IR, TGA, VSM and XPS, not only affirmed the successful fabrication of a magnetic nanoparticle with a unique hollow core-shell structure but also facilitated an exploration of the interfacial bonding mechanisms between Fe3O4 and other shell layers. The enrichment of the MIP@void@Fe3O4 nanozymes due to imprinting was approximately 5 times higher than the local substrate concentration and contributed to the increased activity. Based on selective and competitive recognition experiments, the synthesized nanozymes could selectively recognize organic and inorganic targets with the lowest detection limits (LOD) of 6.6 × 10-9 ppm for Pb2+ and 5.13 × 10-11 M for DIZ. Therefore, the proposed biosensor is expected to be a potent tool for trace pollutant detection, which provides a rational design for more advanced and subtle methods to bridge the activity gap between natural enzymes and nanozymes.
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Affiliation(s)
- Zhanyi Ge
- State Key Laboratory of Chemical Resource Engineering, Beijing Key Laboratory of Bioprocess, College of Life Science and Technology, Beijing University of Chemical Technology, Beijing 100029, PR China.
| | - Yilin Zhao
- State Key Laboratory of Chemical Resource Engineering, Beijing Key Laboratory of Bioprocess, College of Life Science and Technology, Beijing University of Chemical Technology, Beijing 100029, PR China.
| | - Jiayi Li
- State Key Laboratory of Chemical Resource Engineering, Beijing Key Laboratory of Bioprocess, College of Life Science and Technology, Beijing University of Chemical Technology, Beijing 100029, PR China.
| | - Zhaobo Si
- State Key Laboratory of Chemical Resource Engineering, Beijing Key Laboratory of Bioprocess, College of Life Science and Technology, Beijing University of Chemical Technology, Beijing 100029, PR China.
| | - Wenbo Du
- State Key Laboratory of Chemical Resource Engineering, Beijing Key Laboratory of Bioprocess, College of Life Science and Technology, Beijing University of Chemical Technology, Beijing 100029, PR China.
| | - Haijia Su
- State Key Laboratory of Chemical Resource Engineering, Beijing Key Laboratory of Bioprocess, College of Life Science and Technology, Beijing University of Chemical Technology, Beijing 100029, PR China.
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Yang CL, Yu LH, Pang YH, Shen XF. A colorimetric sensing platform with smartphone for organophosphorus pesticides detection based on PANI-MnO 2 nanozyme. Anal Chim Acta 2024; 1286:342045. [PMID: 38049237 DOI: 10.1016/j.aca.2023.342045] [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: 10/09/2023] [Revised: 11/15/2023] [Accepted: 11/17/2023] [Indexed: 12/06/2023]
Abstract
Organophosphorus pesticides (OPs) are of great concern due to its potential harms on human health and the environment. Herein, a budget-friendly, rapid and convenient colorimetric sensing platform is developed for detection of OPs in the environmental and food samples. The sensing element, PANI-MnO2 nanozyme with excellent oxidase mimetic activity is synthesized at room temperature, which is able to directly oxidize 3,3,5,5-tetramethylbenzidine (TMB) to generate blue colored oxidized TMB (OxTMB) within 2 min. Ascorbic acid (AA) can inhibit the oxidization reaction of TMB, consequently causing the blue color fading. Ascorbic acid 2-phosphate (AAP) could be hydrolyzed to produce AA by alkaline phosphatase (ALP). In the presence of OPs can effectively decrease ALP activity, resulting in the recovery of catalytic activity of PANI-MnO2. Therefore, sensitive and selective OPs detection is achieved. Under the optimal conditions, excellent detection performance in term of glyphosate as a model is achieved with a linear range from 0.50 to 50 μM, the detection limit is 0.39 μM (S/N = 3). The utility of method is further improved by combining a portable smartphone platform with a color picking application. The colorimetric platform achieves instrument-free detection of OPs and overcomes the uneven color distribution of traditional paper-based chip, providing an alternative strategy for the qualitative discernment and semi-quantitative analysis of OPs on-site.
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Affiliation(s)
- Cheng-Lin Yang
- State Key Laboratory of Food Science and Resources, School of Food Science and Technology, Collaborative Innovation Center of Food Safety and Quality Control in Jiangsu Province, Jiangnan University, Wuxi 214122, China
| | - Li-Hong Yu
- State Key Laboratory of Food Science and Resources, School of Food Science and Technology, Collaborative Innovation Center of Food Safety and Quality Control in Jiangsu Province, Jiangnan University, Wuxi 214122, China
| | - Yue-Hong Pang
- State Key Laboratory of Food Science and Resources, School of Food Science and Technology, Collaborative Innovation Center of Food Safety and Quality Control in Jiangsu Province, Jiangnan University, Wuxi 214122, China; International Joint Laboratory on Food Safety, Jiangnan University, Wuxi 214122, China
| | - Xiao-Fang Shen
- State Key Laboratory of Food Science and Resources, School of Food Science and Technology, Collaborative Innovation Center of Food Safety and Quality Control in Jiangsu Province, Jiangnan University, Wuxi 214122, China; International Joint Laboratory on Food Safety, Jiangnan University, Wuxi 214122, China.
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9
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Yi Y, Hou J, Bi X, Luo L, Li L, You T. Simple and sensitive fluorescence sensing of methyl parathion based on the inner filter effect of p-nitrophenol on nitrogen-doped titanium carbide quantum dots. LUMINESCENCE 2023. [PMID: 38148625 DOI: 10.1002/bio.4632] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2023] [Revised: 10/18/2023] [Accepted: 11/04/2023] [Indexed: 12/28/2023]
Abstract
It is of great significance to develop an effective method for methyl parathion (MP) detection. Herein, a novel nitrogen-doped titanium carbide quantum dots (N-Ti3 C2 QDs) was prepared and used to construct a simple and sensitive fluorescence sensing platform of MP by making use of inner filter effect (IFE). The prepared N-Ti3 C2 QDs can exhibit strong blue fluorescence at 434 nm. Meanwhile, MP could hydrolyze to produce p-nitrophenol (p-NP) under alkaline conditions, which showed a characteristic ultraviolet-visible (UV-visible) absorption peak at 405 nm, resulting in the fluorescence of N-Ti3 C2 QDs is effectively quenched by p-NP. In addition, the investigation of time-resolved fluorescence decays indicated that the corresponding quenching mechanism of p-NP on N-Ti3 C2 QDs is due to the IFE. After optimizing the conditions, the as-developed fluorescence sensing platform displayed wide detection range (0.1-30 μg mL-1 ) and low detection limit (0.036 μg mL-1 ) for MP, and it was also successfully applied for MP analysis in real water samples, thus it is expected that this simple, sensitive and enzyme-free sensing platform shows great applications.
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Affiliation(s)
- Yinhui Yi
- School of Agricultural Engineering, Jiangsu University, Zhenjiang, Jiangsu, China
- School of the Environment and Safety Engineering, Jiangsu University, Zhenjiang, Jiangsu, China
| | - Jieling Hou
- School of the Environment and Safety Engineering, Jiangsu University, Zhenjiang, Jiangsu, China
| | - Xiaoya Bi
- School of Agricultural Engineering, Jiangsu University, Zhenjiang, Jiangsu, China
| | - Lijun Luo
- School of Agricultural Engineering, Jiangsu University, Zhenjiang, Jiangsu, China
| | - Libo Li
- School of Agricultural Engineering, Jiangsu University, Zhenjiang, Jiangsu, China
| | - Tianyan You
- School of Agricultural Engineering, Jiangsu University, Zhenjiang, Jiangsu, China
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10
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Su X, Zheng K, Tian X, Zhou X, Zou X, Xu X, Sun Z, Zhang W. An advanced ratiometric molecularly imprinted sensor based on metal ion reoxidation for indirect and ultrasensitive glyphosate detection in fruit. Food Chem 2023; 429:136927. [PMID: 37481984 DOI: 10.1016/j.foodchem.2023.136927] [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: 02/01/2023] [Revised: 06/29/2023] [Accepted: 07/16/2023] [Indexed: 07/25/2023]
Abstract
An indirect and ultrasensitive ratiometric molecularly imprinted (MIP) sensor, based on metal ion reoxidation, is introduced for glyphosate (GLY) determination in fruit. As high-performance signal amplification substrates, carbon nanotubes (MWCNTs) and gold nanoparticles (AuNPs) are conveniently modified on GCE. The artificial antibody-MIP membrane, presents typical three-dimensional structure to GLY template. Built-in reference methylene blue (MB) is directly electropolymerized on MWCNTs-Au/GCE. Particularly, Cu2+ and GLY interestingly form chelate complex, and the Cu2+ (ICu) in Cu(Ⅱ)-GLY-complex can be reoxidized, and indirectly quantizes GLY. The reference signal (IMB) presents noteworthy stability with different GLY levels, and the ratiometric readout (ICu/IMB) is recognized as a more trustworthy indicator to quantize GLY. Proposed sensor presents broad range as 1.73 ∼ 400 ng/mL, and limit of detection is well found as 0.24 ng/mL (S/N = 3). Finally, as-fabricated method is verified with standard HPLC in real-fruit-sample, and the errors and recovery rates are calculated as 3.4% ∼ 6.7% and 94.4% ∼ 104.6%, respectively.
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Affiliation(s)
- Xiaoyu Su
- Department of Food & Biological Engineering, Jiangsu University, Zhenjiang 212013, China
| | - Kaiyi Zheng
- Department of Food & Biological Engineering, Jiangsu University, Zhenjiang 212013, China
| | - Xiaoyu Tian
- Department of Food & Biological Engineering, Jiangsu University, Zhenjiang 212013, China
| | - Xuan Zhou
- Department of Food & Biological Engineering, Jiangsu University, Zhenjiang 212013, China
| | - Xiaobo Zou
- Department of Food & Biological Engineering, Jiangsu University, Zhenjiang 212013, China
| | - Xuechao Xu
- School of Food Science and Engineering, Yangzhou University, Yangzhou 225127, China
| | - Zongbao Sun
- Department of Food & Biological Engineering, Jiangsu University, Zhenjiang 212013, China.
| | - Wen Zhang
- College of Photoelectric Engineering, Chongqing University, Chongqing 400044, China.
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Tong F, Yang Z, Wang Z, Liu W, Jiang W, Zhu L, Wang L, Zheng M, Hou R, Zhou Y, Liu Y. Enzyme-mediated Ru@UiO-66@MnO 2 NSs/thiamine-based ratiometric fluorescence sensor for visual detection of organophosphorus pesticide residues. Food Chem 2023; 429:136945. [PMID: 37487398 DOI: 10.1016/j.foodchem.2023.136945] [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: 01/18/2023] [Revised: 07/17/2023] [Accepted: 07/17/2023] [Indexed: 07/26/2023]
Abstract
In view of the potential hazards of organophosphorus pesticides (OPs), this paper constructed a ratiometric fluorescent probe utilizing a functionalized metal-organic framework to detect OPs. Ru(bpy)3Cl2 was encapsulated inside UiO-66 as a reference signal, and MnO2 nanosheets (MnO2 NSs) were grown on the surface to obtain Ru@UiO-66@MnO2 NSs. Acetylcholinesterase catalyzed the decomposition of acetylcholine into reductive thiocholine, which consumed MnO2 NSs, thus restoring the Ru@UiO-66 fluorescence. Due to the enzymatic inhibition of OPs and the redox reaction between MnO2 NSs and thiamine, this probe emitted blue fluorescence in the presence of OPs. The probe achieved linear responses to dichlorvos and chlorpyrifos with LODs of 9.99 × 10-6 μg mL-1 and 9.99 × 10-5 μg mL-1. The probe exhibited a satisfactory recovery rate for OPs in green tea. Furthermore, a hydrogel detection platform was developed by embedding the probe into sodium alginate. Overall, this work provides a visual approach to detect OPs in agricultural products.
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Affiliation(s)
- Fei Tong
- Key Laboratory of Jianghuai Agricultural Product Fine Processing and Resource Utilization of Ministry of Agriculture and Rural Affairs, State Key Laboratory of Tea Plant Biology and Utilization, Department of Food Science and Engineering, Anhui Agricultural University, Hefei 230036, China
| | - Zan Yang
- Key Laboratory of Jianghuai Agricultural Product Fine Processing and Resource Utilization of Ministry of Agriculture and Rural Affairs, State Key Laboratory of Tea Plant Biology and Utilization, Department of Food Science and Engineering, Anhui Agricultural University, Hefei 230036, China
| | - Zheng Wang
- Key Laboratory of Jianghuai Agricultural Product Fine Processing and Resource Utilization of Ministry of Agriculture and Rural Affairs, State Key Laboratory of Tea Plant Biology and Utilization, Department of Food Science and Engineering, Anhui Agricultural University, Hefei 230036, China
| | - Wenya Liu
- Key Laboratory of Jianghuai Agricultural Product Fine Processing and Resource Utilization of Ministry of Agriculture and Rural Affairs, State Key Laboratory of Tea Plant Biology and Utilization, Department of Food Science and Engineering, Anhui Agricultural University, Hefei 230036, China
| | - Wanqi Jiang
- Key Laboratory of Jianghuai Agricultural Product Fine Processing and Resource Utilization of Ministry of Agriculture and Rural Affairs, State Key Laboratory of Tea Plant Biology and Utilization, Department of Food Science and Engineering, Anhui Agricultural University, Hefei 230036, China
| | - Lu Zhu
- Key Laboratory of Jianghuai Agricultural Product Fine Processing and Resource Utilization of Ministry of Agriculture and Rural Affairs, State Key Laboratory of Tea Plant Biology and Utilization, Department of Food Science and Engineering, Anhui Agricultural University, Hefei 230036, China
| | - Lei Wang
- Key Laboratory of Jianghuai Agricultural Product Fine Processing and Resource Utilization of Ministry of Agriculture and Rural Affairs, State Key Laboratory of Tea Plant Biology and Utilization, Department of Food Science and Engineering, Anhui Agricultural University, Hefei 230036, China
| | - Mingming Zheng
- Key Laboratory of Jianghuai Agricultural Product Fine Processing and Resource Utilization of Ministry of Agriculture and Rural Affairs, State Key Laboratory of Tea Plant Biology and Utilization, Department of Food Science and Engineering, Anhui Agricultural University, Hefei 230036, China
| | - Ruyan Hou
- Key Laboratory of Jianghuai Agricultural Product Fine Processing and Resource Utilization of Ministry of Agriculture and Rural Affairs, State Key Laboratory of Tea Plant Biology and Utilization, Department of Food Science and Engineering, Anhui Agricultural University, Hefei 230036, China
| | - Yibin Zhou
- Key Laboratory of Jianghuai Agricultural Product Fine Processing and Resource Utilization of Ministry of Agriculture and Rural Affairs, State Key Laboratory of Tea Plant Biology and Utilization, Department of Food Science and Engineering, Anhui Agricultural University, Hefei 230036, China
| | - Yingnan Liu
- Key Laboratory of Jianghuai Agricultural Product Fine Processing and Resource Utilization of Ministry of Agriculture and Rural Affairs, State Key Laboratory of Tea Plant Biology and Utilization, Department of Food Science and Engineering, Anhui Agricultural University, Hefei 230036, China.
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12
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Hu J, Su X, Yuan L, Zheng K, Zou X, Sun Z, Xu X, Zhang W. Competitive immunoassay using enzyme-regulated Fe 3O 4@COF/Fe 3+ fluorescence probe for natural chloramphenicol detection. Anal Chim Acta 2023; 1277:341680. [PMID: 37604605 DOI: 10.1016/j.aca.2023.341680] [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: 06/02/2023] [Revised: 07/23/2023] [Accepted: 07/30/2023] [Indexed: 08/23/2023]
Abstract
Accurate and sensitive detection of chloramphenicol (CAP) in natural samples is essential for ensuring human health. Herein, an enzyme-regulated fluorescence sensor using Fe3O4@COF/Fe3+ probe, is developed for CAP determination. Fe3O4@COF, synthesized via hydrothermal method, exhibits dual functions as a magnetic carrier and signal probe. Bovine serum albumin conjugated-chloramphenicol, adsorbed on the surface of Fe3O4@COF, competes with CAP for antibody binding. The antibody interacts with alkaline phosphatase via the biotin-streptavidin system. Meanwhile, ascorbic acid, produced from the enzyme-catalyzed reaction dominated by alkaline phosphatase, effectively restores the fluorescence of Fe3O4@COF that is quenched by Fe3+. After experimental verification and gradual optimization, a logarithmic linear relationship between CAP concentration and fluorescence intensity is established in the range of 2 × 10-4∼10 μg mL-1, with a good limit of detection (9.2 × 10-5 μg mL-1). Proposed method exhibits excellent stability (15 days) and reusability (8 cycles), providing a sensitive and reliable method for accurate CAP detection. The readouts show good agreement with HPLC and recoveries during laboratory and natural CAP analysis.
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Affiliation(s)
- Jutao Hu
- Department of Food & Biological Engineering, Jiangsu University, Zhenjiang, 212013, China
| | - Xiaoyu Su
- Department of Food & Biological Engineering, Jiangsu University, Zhenjiang, 212013, China
| | - Lei Yuan
- Department of Food & Biological Engineering, Jiangsu University, Zhenjiang, 212013, China
| | - Kaiyi Zheng
- Department of Food & Biological Engineering, Jiangsu University, Zhenjiang, 212013, China
| | - Xiaobo Zou
- Department of Food & Biological Engineering, Jiangsu University, Zhenjiang, 212013, China
| | - Zongbao Sun
- Department of Food & Biological Engineering, Jiangsu University, Zhenjiang, 212013, China
| | - Xuechao Xu
- College of Food Science and Engineering, Yangzhou University, Yangzhou, 225127, China
| | - Wen Zhang
- College of Photoelectric Engineering, Chongqing University, Chongqing, 400044, China.
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13
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Wang L, Pan Y, Wang Z, Wang Y, Wei X. Ultrasensitive Fluorescence Platform Based on AgNPs In Situ-Incorporated Zr-MOFs for the Detection of Organophosphorus Pesticides. ACS APPLIED MATERIALS & INTERFACES 2023; 15:44109-44118. [PMID: 37676637 DOI: 10.1021/acsami.3c09354] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/08/2023]
Abstract
Organophosphorus pesticides (OPPs) are extensively used in agricultural production, and the contamination caused by their residues has raised significant concerns regarding potential threats to human health. Herein, a novel fluorescence nanoprobe based on an enzyme-mediated silver nanoparticle-modified metal organic framework (AgNPs@PCN-224) was successfully prepared for the rapid detection of OPPs. Initially, AgNPs@PCN-224 were synthesized by reducing silver nitrate (AgNO3) using sodium borohydride (NaBH4) embedded into luminescent PCN-224. This triggered the inner filter effect, leading to fluorescence quenching. Meanwhile, under the catalysis of acetylcholinesterase (AChE) and choline oxidase (CHO), acetylcholine (ATCh) was decomposed to hydrogen peroxide (H2O2), which could destroy AgNPs to form Ag+ released from PCN-224 for fluorescence recovery. Instead, fenitrothion, an OPP, inhibited AChE activity, allowing the quenched fluorescence to be reactivated. Under the current optimum conditions, the fluorescence intensity had a good correlation (Y = -728.5370X + 2178.4248, R2 = 0.9869) over a dynamic range of fenitrothion concentrations from 0.1 to 500 ng/mL, with an LOD of 0.037 ng/mL. In addition, the anti-interference ability and robustness of the proposed sensor was verified for the monitoring of fenitrothion in tea with recoveries of 87.67-103.72% and the relative standard deviations (RSD) < 5.43%, indicating that the system has excellent prospects for OPP determination in practical applications. Furthermore, this work provides a universal platform for screening other enzyme inhibitors to detect OPPs.
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Affiliation(s)
- Li Wang
- Department of Food Science & Technology, School of Agriculture and Biology, Shanghai Jiao Tong University, 800 Dongchuan Road, Minhang District, Shanghai 200240, China
| | - Yi Pan
- Department of Food Science & Technology, School of Agriculture and Biology, Shanghai Jiao Tong University, 800 Dongchuan Road, Minhang District, Shanghai 200240, China
| | - Zhengwu Wang
- Department of Food Science & Technology, School of Agriculture and Biology, Shanghai Jiao Tong University, 800 Dongchuan Road, Minhang District, Shanghai 200240, China
| | - Yuanfeng Wang
- Institute of Food Engineering, College of Life Science, Shanghai Normal University, 100 Guilin Road, Xuhui District, Shanghai 200234, China
| | - Xinlin Wei
- Department of Food Science & Technology, School of Agriculture and Biology, Shanghai Jiao Tong University, 800 Dongchuan Road, Minhang District, Shanghai 200240, China
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Yuan L, Tian X, Fan Y, Sun Z, Zheng K, Zou X, Zhang W. TPB-DMTP@S-CDs/MnO 2 Fluorescence Composite on a Dual-Emission-Capture Sensor Module for Fingerprint Recognition of Organophosphorus Pesticides. Anal Chem 2023; 95:2741-2749. [PMID: 36689633 DOI: 10.1021/acs.analchem.2c03738] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Abstract
Residues of organophosphorus pesticides (OPs) raise considerable concern, while identifying OPs from unknown sources is still a challenge to onsite fluorescence techniques. Herein, a dual-emission-capture sensor module, based on a TPB-DMTP@S-CDs/MnO2 fluorescence composite, is developed for OP fingerprint recognition. TPB-DMTP@S-CDs/MnO2, synthesized by a hydrothermal method and self-assembly, is spectrographically validated as a dual-wavelength fluorescence source. OP-sensitive catalysis (acetylcholinesterase on acetylthiocholine chloride) is designed to regulate fluorescence by decomposing quenchable MnO2. A flexibly fabricated sensor module supports the optimal dual-wavelength fluorescence excitations and captures and converts fluorescence emissions into equivalent photocurrents for feasible access. The most prominent finding is that dual-fluorescence emissions alternatively respond to levels, species, and multi-pH pretreatments of OPs due to varied MnO2 sizes and distributions. Therefore, OP fingerprint recognition is conducted by refining the multidimensional information from fluorescence-triggered photocurrents and preset hydrolyzation using principal component analysis and the rule of maximum covariance. The recommended method provides a wide dynamic range (1 × 10-6 ∼ 12 μg mL-1), a good limit of detection (7.9 × 10-7 μg mL-1), 15-day stability, and good selectivity to guarantee fingerprint recognition. For laboratory and natural samples, this method credibly identifies a single kind of OPs from multiple species at trace levels (10-5 μg mL-1) and performs well in two-component and multicomponent analyses.
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Affiliation(s)
- Lei Yuan
- Department of Food & Biological Engineering, Jiangsu University, Zhenjiang 212013, China.,College of Photoelectric Engineering, Chongqing University, Chongqing 400044, China
| | - Xiaoyu Tian
- Department of Food & Biological Engineering, Jiangsu University, Zhenjiang 212013, China
| | - Yushan Fan
- Department of Food & Biological Engineering, Jiangsu University, Zhenjiang 212013, China
| | - Zongbao Sun
- Department of Food & Biological Engineering, Jiangsu University, Zhenjiang 212013, China
| | - Kaiyi Zheng
- Department of Food & Biological Engineering, Jiangsu University, Zhenjiang 212013, China
| | - Xiaobo Zou
- Department of Food & Biological Engineering, Jiangsu University, Zhenjiang 212013, China
| | - Wen Zhang
- College of Photoelectric Engineering, Chongqing University, Chongqing 400044, China
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15
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Ma X, Feng T, Zhang P, Zhang H, Hu X, Yang Y, Wang Z, Zhang H, Peng D, Li X, Xu J. Downregulation of Peroxidase Activity of Platinum Cube Enables Minute-Time Scale Colorimetric Signaling of Hypoxanthine for Fish Freshness Monitoring. Foods 2023; 12:foods12020291. [PMID: 36673383 PMCID: PMC9858192 DOI: 10.3390/foods12020291] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2022] [Revised: 12/31/2022] [Accepted: 01/05/2023] [Indexed: 01/11/2023] Open
Abstract
Due to its unique biological composition, aquatic products, especially fish, are extremely perishable compared to other muscle products. Herein, we proposed an artificial nanozyme-based colorimetric detection of hypoxanthine (Hx), the indicator of fish freshness, in a minute-time scale without the assistance of a natural enzyme (hypoxanthine oxidase). The principle is based on the interaction between Hx and polyvinylpyrrolidone-modified platinum cubic nanomaterials (PVP-PtNC), in which the catalytic active sites of PVP-PtNC's surface were blocked by Hx. This causes the downregulation of PVP-PtNC's catalytic ability and weakened its ability to catalyze the oxidization of 3,3',5,5'-Tetramethylbenzidine (TMB) by H2O2. Accordingly, the decrease in the UV-vis absorption and the weakening of the colorimetric reaction color is proportional to the Hx concentration. On this basis, a target-triggered colorimetric method for detecting Hx is developed for fish freshness monitoring with a fast detection speed, low cost, high accuracy, and simplified operation. Experiments reveal that the correlation response of Hx is from 0.5 μM to 10 mM with a limit of detection of 0.16 μM. In particular, the Hx detected from real fish indicates that the method possesses a promising potential for practical application. All of these features are expected to promote the development of online detection tools for food safety monitoring.
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Affiliation(s)
- Xiaoming Ma
- Key Laboratory of Organo-Pharmaceutical Chemistry of Jiangxi Province, School of Chemistry and Chemical Engineering, Gannan Normal University, Ganzhou 341000, China
- Fujian Province-Indonesia Marine Food Joint Research and Development Center, Fujian Polytechnic Normal Univeristy, Fuzhou 350300, China
| | - Tingting Feng
- Key Laboratory of Organo-Pharmaceutical Chemistry of Jiangxi Province, School of Chemistry and Chemical Engineering, Gannan Normal University, Ganzhou 341000, China
| | - Peng Zhang
- Key Laboratory of Organo-Pharmaceutical Chemistry of Jiangxi Province, School of Chemistry and Chemical Engineering, Gannan Normal University, Ganzhou 341000, China
| | - Hui Zhang
- Key Laboratory of Organo-Pharmaceutical Chemistry of Jiangxi Province, School of Chemistry and Chemical Engineering, Gannan Normal University, Ganzhou 341000, China
| | - Xuan Hu
- Key Laboratory of Organo-Pharmaceutical Chemistry of Jiangxi Province, School of Chemistry and Chemical Engineering, Gannan Normal University, Ganzhou 341000, China
| | - Yuying Yang
- Key Laboratory of Organo-Pharmaceutical Chemistry of Jiangxi Province, School of Chemistry and Chemical Engineering, Gannan Normal University, Ganzhou 341000, China
| | - Zhen Wang
- Key Laboratory of Organo-Pharmaceutical Chemistry of Jiangxi Province, School of Chemistry and Chemical Engineering, Gannan Normal University, Ganzhou 341000, China
| | - Huifang Zhang
- Key Laboratory of Organo-Pharmaceutical Chemistry of Jiangxi Province, School of Chemistry and Chemical Engineering, Gannan Normal University, Ganzhou 341000, China
| | - Dong Peng
- Key Laboratory of Organo-Pharmaceutical Chemistry of Jiangxi Province, School of Chemistry and Chemical Engineering, Gannan Normal University, Ganzhou 341000, China
| | - Xun Li
- Key Laboratory of Organo-Pharmaceutical Chemistry of Jiangxi Province, School of Chemistry and Chemical Engineering, Gannan Normal University, Ganzhou 341000, China
- Correspondence: (X.L.); (J.X.)
| | - Jianguo Xu
- School of Food and Biological Engineering, Hefei University of Technology, Hefei 230009, China
- Correspondence: (X.L.); (J.X.)
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16
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Covalent post-synthetic modified metal-organic framework UIO-66-NH2-HNA for selective and sensitive turn-on detection of acetylacetone, S2-, and PO43-. J Photochem Photobiol A Chem 2023. [DOI: 10.1016/j.jphotochem.2023.114539] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
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17
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Homogeneous photoelectrochemical biosensor for sensitive detection of omethoate via ALP-mediated pesticide assay and Bi 2S 3@Bi 2Sn 2O 7 heterojunction as photoactive material. Anal Bioanal Chem 2022; 414:7277-7289. [PMID: 35984445 DOI: 10.1007/s00216-022-04279-x] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2022] [Revised: 08/01/2022] [Accepted: 08/09/2022] [Indexed: 11/01/2022]
Abstract
A simple homogeneous photoelectrochemical (PEC) sensing platform based on an alkaline phosphatase (ALP)-mediated pesticide assay was established for the sensitive detection of omethoate (OM). The Bi2S3@Bi2Sn2O7 heterojunction was used as a photoactive material to provide stable background photocurrent signals. The inhibition of OM on ALP and PEC determination was carried out in the homogeneous system. In the absence of OM, dephosphorylation of L-ascorbic acid 2-phosphate trisodium salt (AAP) was catalyzed by ALP to produce the enzyme-catalyzed product (L-ascorbic acid, AA). AA, as an electron donor, could capture photogenerated holes on the Bi2S3@Bi2Sn2O7 heterojunction, thus inhibiting the recombination of electron holes to achieve an increase of the photocurrent signal. When the OM was introduced, the enzyme activity of ALP was reduced due to the organophosphorus pesticides (OPs)-based enzyme inhibition, and the AA produced by catalytic hydrolysis was also reduced, thus reducing the photocurrent signal. Compared with the traditional PEC sensor for OPs, this homogeneous PEC sensor avoided immobilization procedures, covalent labeling, separation, and the steric hindrance effect caused by immobilized biomolecules, which achieved high recognition efficiency and caused a reduction in analysis time. Additionally, an ALP-mediated pesticide assay for the determination of OPs with a simplified experimental process further improved the stability and reproducibility of the PEC sensor. The PEC sensor showed high sensitivity to the target OM within a dynamic range of 0.05 ~ 500 ng mL-1, and the detection limit was 0.0146 ng mL-1. Additionally, the PEC biosensing system showed good selectivity and anti-interference ability, and exhibited a satisfactory result in spinach and mustard samples. A homogeneous PEC biosensor based on ALP inhibition strategy was constructed for OM detection in vegetable samples via Bi2S3@Bi2Sn2O7 heterojunction as the photoactive substrate material.
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