Nanozymes sensor array for discrimination and intelligent sensing of phenolic acids in food

Food Chemistry, Journal Year: 2024, Volume and Issue: 450, P. 139326 - 139326

Published: April 10, 2024

Language: Английский

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Machine learning assisted multi-signal nanozyme sensor array for the antioxidant phenolic compounds intelligent recognition

Food Chemistry, Journal Year: 2025, Volume and Issue: 471, P. 142826 - 142826

Published: Jan. 7, 2025

Language: Английский

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Single‐Atom Iridium‐doped Carbon Dots Nanozyme with High Peroxidase‐Like Activity as Colorimetric Sensors for Multimodal Detection of Mercury Ions

Small, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 16, 2025

Nanozyme-based colorimetric sensors are promising approaches for environmental monitoring, food safety, and medical diagnostics. However, developing novel nanozymes that exhibit high catalytic activity, good dispersion in aqueous solution, sensitivity, selectivity, stability is challenging. In this study, the first time, single-atom iridium-doped carbon dot (SA Ir-CDs) synthesized via a simple situ pyrolysis process. Doping dots with iridium form of single atoms to achieve maximum atomic utilization not only enhances peroxidase (POD)-like activity 178.81 U mg-1 but also improves dispersibility solutions over 30 days. Hence, SA Ir-CD platform developed mercury ions (Hg2+) detection exhibited linear relationship from 0.01 10 µm limit 4.4 nm. Notably, changes color can be observed through naked eye smartphone, enabling convenient field onsite monitoring without need sophisticated analytical equipment. an approach fabricating metal-based POD-like developed, new effective easy-to-use sensor Hg2+ constructed.

Language: Английский

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Fluorescent Fingerprint Identification of Protein Structural Changes and Disease-Specific Amyloid Beta Aggregates Based on a Single-Nanozyme Sensor Array

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

Published: Feb. 25, 2025

The misfolding of amyloid β (Aβ) peptides into an aggregation state is a central hallmark the onset Alzheimer's disease (AD). However, conventional methods are mainly focused on detecting specific Aβ peptide, which makes it difficult to recognize multiple analytes with different topological features and unfolded states at same time. Here, we propose simple universal sensing strategy construct fluorescence sensor array by using single-nanozyme probe combined three fluorescent substrates as recognition units protein structural changes identify between assemblies. In this system, fingerprint-like patterns produced from nonspecific interactions proteins units. As result, can accurately 13 kinds their mixtures ratios. Moreover, discriminate against diverse conformational forms. Most importantly, successfully distinguishes species, even in artificial cerebrospinal fluid samples human serum samples. This work provides attractive reliable for predicting pathologically relevant clinical diagnosis AD.

Language: Английский

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Recent development of noble metal-based bimetallic nanoparticles for colorimetric sensing

TrAC Trends in Analytical Chemistry, Journal Year: 2023, Volume and Issue: 169, P. 117386 - 117386

Published: Oct. 20, 2023

Language: Английский

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Facilely fabricating triple-atom Fe/Zn/Ir luminescent nanozymes with peroxidase-like activity for dual mode melatonin detection

Chemical Engineering Journal, Journal Year: 2024, Volume and Issue: 493, P. 152663 - 152663

Published: May 29, 2024

Language: Английский

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Portable Colorimetric Sensor Array Based on a Porous Single‐Atom Fe Nanozyme with Different Surface Sites for Identifying Artificially Ripened Fruits

Advanced Functional Materials, Journal Year: 2024, Volume and Issue: 35(2)

Published: Oct. 4, 2024

Abstract Single‐atom nanozyme materials have demonstrated exceptional specific catalytic activity due to the atomic‐level dispersion of their active centers. However, exploration mechanisms for single‐atom catalysts is so far limited 2D surfaces nanozymes. In this study, porous Fe (psaFeN) successfully prepared through a straightforward coordination‐assisted polymerization‐assembly strategy. The psaFeN composite nanospheres are uniformly sized, exhibiting excellent dispersibility with well‐organized pore channels extending from center surface. Density functional theory calculations reveal that in nanozyme, (010) facets serve as primary surface, where atoms form tri‐coordinated or tetra‐coordinated structures doped nitrogen atoms. (100) act auxiliary reactive Fe─N center. exhibits POD‐like ( K m = 1.77 mM; V max 173.53 × 10 − ⁸ M s −1 ). Given bioactivity, portable colorimetric biosensor constructed distinguishing artificially ripened fruits naturally ones. sensor achieves precise discrimination detection limit low 310 nmol L . This study anticipated offer valuable insights into understanding 3D nanozymes, promoting application development robust biosensors food safety.

Language: Английский

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A novel hybrid sensor array based on the polyphenol oxidase and its nanozymes combined with the machine learning based dual output model to identify tea polyphenols and Chinese teas

Talanta, Journal Year: 2024, Volume and Issue: 272, P. 125842 - 125842

Published: Feb. 27, 2024

Language: Английский

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Accelerated and Precise Identification of Antioxidants and Pesticides Using a Smartphone-Based Colorimetric Sensor Array

Talanta, Journal Year: 2024, Volume and Issue: 277, P. 126275 - 126275

Published: May 22, 2024

Language: Английский

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Advancing tea detection with artificial intelligence: strategies, progress, and future prospects

Trends in Food Science & Technology, Journal Year: 2024, Volume and Issue: unknown, P. 104731 - 104731

Published: Sept. 1, 2024

Language: Английский

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