Colorimetric sensors for detection of organophosphorus pesticides in food: From sensing strategies to chemometrics driven discrimination

Trends in Food Science & Technology, Journal Year: 2024, Volume and Issue: 152, P. 104683 - 104683

Published: Aug. 24, 2024

Language: Английский

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Machine Learning-assisted Melamine-Cu Nanozyme and Cholinesterase Integrated Array for Multi-category Pesticide Intelligent Recognition

Biosensors and Bioelectronics, Journal Year: 2024, Volume and Issue: 266, P. 116747 - 116747

Published: Sept. 4, 2024

Language: Английский

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Smartphone-integrated colorimetric sensor for rapid detection of phenolic compounds based on the peroxidase-mimicking activity of copper/cerium-aspartic acid metal–organic framework

Microchimica Acta, Journal Year: 2025, Volume and Issue: 192(1)

Published: Jan. 1, 2025

Language: Английский

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An instrument-free photoluminescent sensor array based on “turn-off” bimetallic lanthanide metal–organic frameworks for antibiotic determination

Sensors and Actuators B Chemical, Journal Year: 2023, Volume and Issue: 397, P. 134671 - 134671

Published: Sept. 27, 2023

Language: Английский

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Ultrasmall CuMn-His Nanozymes with Multienzyme Activity at Neutral pH: Construction of a Colorimetric Sensing Array for Biothiol Detection and Disease Identification

ACS Applied Materials & Interfaces, Journal Year: 2024, Volume and Issue: 16(27), P. 34538 - 34548

Published: June 28, 2024

Biothiol assays offer vital insights into health assessment and facilitate the early detection of potential issues, thereby enabling timely effective interventions. In this study, we developed ultrasmall CuMn-Histidine (His) nanozymes with multiple enzymatic activities. CuMn-His enhanced peroxidase (POD)-like activity at neutral pH was achieved through hydrogen bonding electrostatic effects. addition, possesses laccase (LAC)-like superoxide dismutase (SOD)-like activities pH. Based on three different enzyme mimetic pH, colorimetric sensing array without changing buffer solution successfully constructed. The used for identification biothiols, glutathione (GSH), cysteine (Cys), homocysteine (Hcy). Subsequently, excellent application results were shown in complex serum cellular level analyses. This study provides an innovative strategy development bimetallic construction arrays.

Language: Английский

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Carbon Dots Dually Doped with Fe and Co for Visual Detection of H₂O₂ and Glutathione

ACS Applied Nano Materials, Journal Year: 2024, Volume and Issue: 7(15), P. 17795 - 17803

Published: July 29, 2024

Hydrogen peroxide (H2O2) and glutathione (GSH) have been reported to be associated with a variety of diseases. Therefore, the accurate rapid determination H2O2 GSH was very important. The traditional assay colorimetric method, which suffered from bottleneck single-mode analysis. In this work, we designed dual-mode fluorescence sensor for detecting based on bifunctional Fe, Co-CDs, possessed peroxidase (POD)-mimetic activity property. Concretely, Co-CDs catalyzed oxidation 3,3′,5,5′-tetramethylbenzidine (TMB) blue product (oxTMB) help H2O2, could inhibited by GSH. Meanwhile, weakened increasing oxTMB, realizing analysis sensors, detection limit (LOD) reach as low 0.54 μM 0.81 μM, well LOD 0.39 0.61 respectively. Besides, smartphone-assisted hydrogel developed on-site via color change. This study not only dual-target but also provided insights further exploration multifunctional nanozymes.

Language: Английский

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A colorimetric sensor array based on nanoceria crosslinked and heteroatom-doped graphene oxide nanoribbons for the detection and discrimination of multiple pesticides

Analytica Chimica Acta, Journal Year: 2023, Volume and Issue: 1283, P. 341929 - 341929

Published: Oct. 19, 2023

Language: Английский

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Encapsulation of Enzymes into Hydrophilic and Biocompatible Metal Azolate Framework: Improved Functions of Biocatalyst in Cascade Reactions and its Sensing Applications

Small, Journal Year: 2024, Volume and Issue: 20(31)

Published: March 22, 2024

Multiple enzyme-triggered cascade biocatalytic reactions are vital in vivo or vitro, considering the basic biofunction preservation living organisms and signals transduction for biosensing platforms. Encapsulation of such enzymes into carrier endows a sheltering effect can boost catalytic performance, although selection preparation an appropriate is still concern. Herein, focusing on MAF-7, category metal azolate framework (MAF) with superiority against topologically identical ZIF-8, this enzyme@MAF system ameliorate sustainability encapsulating natural carriers. The proposed biocatalyst composite AChE@ChOx@MAF-7/hemin constructed via one-pot situ coprecipitation method. Subsequently, MAF-7 demonstrated to exhibit excellent capacity protection external factors counterpart ZIF-8 through encapsulated free enzymes. In addition, detections specific substrates inhibitors favorable sensitivity accomplished, indicating that properties above expectation different aspects established platform successfully realized. This biofunctional based definitely provide potential approach optimization reaction enzyme encapsulation.

Language: Английский

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Optimization of metal–organic framework nanozyme activity via histidine modification for simultaneous pesticide detection

Chemical Engineering Journal, Journal Year: 2024, Volume and Issue: 493, P. 152630 - 152630

Published: May 28, 2024

Language: Английский

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Kinetics Difference-driven Organophosphorus Hydrolase-like Nanozyme-Coded Pattern for Identifying p-Nitrophenyl Pesticides

Analytical Chemistry, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 21, 2025

Organophosphorus pesticides (OPs) are widely used in agricultural production, posing a great threat to human health and the environment. Given that different OPs present toxicology toxicities, identifying individual pesticide residues becomes important for assessing food safety environmental implications. In this work, kinetics difference-driven analyte hydrolysis strategy is proposed first time validated identify p-nitrophenyl by developing an organophosphorus hydrolase-like nanozyme-coded sensor array. Ultrasmall bare CeO2 nanoparticles were synthesized employed as only sensing unit catalyze of multiple analytes. With catalytic preferences differences under identical reaction conditions, five common analogues (methyl-paraoxon, paraoxon, methyl-parathion, parathion, fenitrothion) offered discriminable colors. By coupling color fingerprints with pattern recognition, accurate identification their mixtures at variety concentrations ratios was verified laboratory practical scenarios. Attractively, apart from excellent performance convenient operation, hydrolytic presents strong resistance against redox substances often cause interference previous oxidoreductase-based arrays. Our study provides new paradigm discriminating specific precisely, showing promising applications multitarget analysis complex matrices.

Language: Английский

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