Metal‐polyphenol Multistage Competitive Coordination System for Colorimetric Monitoring Meat Freshness DOI
Jun Cheng, Yao Shen,

Yulu Gu

et al.

Advanced Materials, Journal Year: 2025, Volume and Issue: unknown

Published: April 1, 2025

Abstract A low‐cost, high‐precision, and secure real‐time system for monitoring food freshness can significantly improve spoilage issues, yet traditional colorimetric sensor arrays often suffer from chemical dyes’ high toxicity limited color changes. Here, a metal‐polyphenol network array (MPN‐CSA) is built detecting total volatile base nitrogen (TVB‐N) markers of meat freshness. The multi‐level competitive coordination process between the amine substances endows with changes far beyond those dyes (reaching detection limit 300 ppb). By integrating convolutional neural (CNN) technology, an online platform developed freshness, achieving overall accuracy rate 99.83%. This environmentally friendly, economically viable MPN‐CSA that monitors in complex storage environments be incorporated into packaging boxes, enabling consumers suppliers to assess real‐time, thus helping reduce waste prevent foodborne illnesses.

Language: Английский

Recent advances in centrifugal microfluidics for point-of-care testing DOI
Huijuan Yuan,

Zeyu Miao,

Chao Wan

et al.

Lab on a Chip, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 1, 2025

Centrifugal microfluidics, with its advantages of rapid and precise fluid control without the need for external pressure, is widely applied in point-of-care testing.

Language: Английский

Citations

3

Light/Ultrasound Enhance Peroxidase Activity of BaTiO3/graphdiyne/Au Nanozyme for Colorimetric Detection of E. coli O157:H7 DOI
Wang Zhang,

Haoxin Li,

Kai Wang

et al.

Sensors and Actuators B Chemical, Journal Year: 2025, Volume and Issue: 430, P. 137378 - 137378

Published: Feb. 2, 2025

Language: Английский

Citations

3

Recent Developments in Colorimetric and Fluorimetric Chemosensors for the Detection of Mn 2+ Ions: A Review (2010–2024) DOI
Eid H. Alosaimi

Critical Reviews in Analytical Chemistry, Journal Year: 2025, Volume and Issue: unknown, P. 1 - 21

Published: Feb. 19, 2025

Manganese is an essential metal ion involved in various biological and environmental processes, but its excess can lead to toxicity, particularly affecting the nervous system. Therefore, developing selective sensitive detection methods for Mn2+ ions of paramount importance. Colorimetric fluorimetric chemosensors have emerged as promising tools due their simplicity, cost-effectiveness, real-time monitoring capabilities. This review discusses recent advances colorimetric that exhibit distinct color or fluorescence changes upon interaction with ions. The explores different organic nanomaterials, focusing on mechanisms sensing, sensitivity, selectivity, practical applications monitoring, healthcare, food safety. article also provides insights into future research directions aimed at overcoming these challenges, improving chemosensor performance, expanding applicability diverse real-world scenarios.

Language: Английский

Citations

3

Optical and Catalytic Properties of Nanozymes for Colorimetric Biosensors: Advantages, Limitations, and Perspectives DOI Creative Commons
Vasily G. Panferov, Juewen Liu

Advanced Optical Materials, Journal Year: 2024, Volume and Issue: unknown

Published: Sept. 16, 2024

Abstract Detection of colorimetric signals is commonly used in various analytical methods and for testing non‐laboratory resource‐limited settings. The performance assays largely based on nanoparticles their unique optical properties. Multifunctional combining enzyme‐like catalytic properties—known as nanozymes—hold great promise applications signal‐generating labels. However, the extensive focus properties leaves overlooked. In this article, use nanozymes reviewed relying inherent nanozymes, detection a catalytically‐formed product, changes caused by product. impact extinction coefficient reaction products, well kinetic parameters sensitivity limit assays, are quantitatively evaluated. Finally, existing limitations prospects biosensors summarized.

Language: Английский

Citations

11

Covalent Organic Frameworks with Fe/Co Single-Atom Nanozyme for Alendronate Sodium Detection DOI

Jingcheng Cao,

Jie Lv,

Yingchao Yin

et al.

ACS Applied Nano Materials, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 11, 2025

Constructing nanozyme-based single atoms with exposed metal-Nx catalytic sites for alendronate sodium (ALDS) tablet quality control is a complex and uncommon task. Herein, we presented an innovative colorimetric assay to detect ALDS utilizing carbon-supported Fe/Co dual-atom nanozymes (Fe/CoSA-NCs) derived from precursor of porphyrin covalent organic frameworks (COFs). The Fe/CoSA-NC nanozymes, featuring Fe–N5 active site electronic interactions between Fe Co, exhibited enhanced peroxidase-like activity. Experimental findings theoretical calculations elucidated that the superior activity Fe/CoSA-NCs stemmed synergistic effect dual atoms, which boosted substrate adsorption reduced reaction barrier. When integrated Fe/CoSA-NCs, could be inhibited due ALDS-Fe3+ coordination. Leveraging this mechanism, rapid selective method was developed detecting ALDS. sensor showed detection limit 0.96 μM in phosphate buffer, surpassing traditional techniques terms efficiency, accuracy, simplicity. Moreover, system successfully utilized pharmaceutical determine urine samples. This work opens powerful avenue developing efficient COFs expands potential applications nanozyme clinical pharmacy.

Language: Английский

Citations

2

Green Synthesis of Eosin-Y Coated Silver Nanoparticles for Sensitive and Selective Fluorometric Detection of L-Dopa DOI

Karuppiah Nagaraj,

Pilavadi Thangamuniyandi,

Gunasekaran Velmurugan

et al.

Journal of Fluorescence, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 15, 2025

Language: Английский

Citations

1

Recent advances in medically oriented research on lactic acid detection DOI
Yihan Li, Yihan Xu,

Yufu Liu

et al.

Chemical Papers, Journal Year: 2025, Volume and Issue: unknown

Published: Feb. 20, 2025

Language: Английский

Citations

1

Engineering Two-Dimensional-Copper Phenolic Nanosheet from CuO Nanosphere for Enhanced Peroxidase Activity in Smartphone-Based Thiophanate-Methyl Detection via Analyte-Inhibition Mechanism DOI
Arunjegan Amalraj, A. Ravikumar,

Emmanuel Chigozie Aham

et al.

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

Published: March 10, 2025

Optical sensors based on nanozymes have shown great promise for the rapid and sensitive detection of pesticide residues in environmental food samples. However, their applicability is often limited by a lack selectivity due to nonspecific enzyme inhibition. Therefore, we developed colorimetric sensing platform specifically tailored detect agricultural fungicide thiophanate-methyl (TpM), leveraging its unique inhibitory effect nanozyme activity. The symmetric ethylenediamine- bisthiourea-like groups TpM exhibit strong affinity metal sites, leading reduction catalytic performance. Thus, designed novel copper oxide nanosphere (CuO)-derived 2D phenolic nanosheet (2D-CuPNS) with enhanced peroxidase-like This facilitates oxidation TMB through OH radical generation via Fenton-like reaction involving Cu2+/Cu+ -C═C- bonds surface. Notably, activity 2D-CuPNS was selectively significantly inhibited specific interaction while remaining unaffected other pesticides. exhibited affinities H2O2, Km values 0.07 2.0 mM, respectively. As result, proposed sensor demonstrated high specificity detection, linear range 0.5-15 μM low limit 0.09 μM. A smartphone-assisted method also utilizing RGB from chromogenic reaction. Furthermore, immobilization substrate onto standard filter paper, ready-to-use paper-based were created. study introduces inhibition approach selective samples, providing versatile practical solution.

Language: Английский

Citations

1

Biosensor-based methods for exosome detection with applications to disease diagnosis DOI

Weikang Ge,

Zheying Mu,

Shiao Yang

et al.

Biosensors and Bioelectronics, Journal Year: 2025, Volume and Issue: unknown, P. 117362 - 117362

Published: March 1, 2025

Language: Английский

Citations

1

Nanoplasmonic biosensors for environmental sustainability and human health DOI
Wenpeng Liu, Kyungwha Chung, Subin Yu

et al.

Chemical Society Reviews, Journal Year: 2024, Volume and Issue: 53(21), P. 10491 - 10522

Published: Jan. 1, 2024

Monitoring the health conditions of environment and humans is essential for ensuring human well-being, promoting global health, achieving sustainability. Innovative biosensors are crucial in accurately monitoring conditions, uncovering hidden connections between understanding how environmental factors trigger autoimmune diseases, neurodegenerative infectious diseases. This review evaluates use nanoplasmonic that can monitor diseases according to target analytes different sizes scales, providing valuable insights preventive medicine. We begin by explaining fundamental principles mechanisms biosensors. investigate potential techniques detecting various biological molecules, extracellular vesicles (EVs), pathogens, cells. also explore possibility wearable physiological network healthy connectivity humans, animals, plants, organisms. will guide design next-generation advance sustainable healthcare environment, planet.

Language: Английский

Citations

7