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Xue S, Zou J, Li J, Xu J, Chen H, Wang L, Gao Y, Duan X, Lu L. Electrochemical detection of carbendazim using molecularly imprinted poly(3,4-ethylenedioxythiophene) on Co,N co-doped hollow carbon nanocage@CNTs-modified electrode. Food Chem 2024; 456:140063. [PMID: 38878547 DOI: 10.1016/j.foodchem.2024.140063] [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: 10/04/2023] [Revised: 06/08/2024] [Accepted: 06/09/2024] [Indexed: 07/24/2024]
Abstract
Precisely detecting trace pesticides and their residues in food products is crucial for ensuring food safety. Herein, a high-performance electrochemical sensing platform was developed for the detection of carbendazim (CBZ) using Co,N co-doped hollow carbon nanocage@carbon nanotubes (Co,N-HC@CNTs) obtained from core-shell ZIF-8@ZIF-67 combined with a poly(3,4-ethylenedioxythiophene) (PEDOT) molecularly imprinted polymer (MIP). The Co,N-HC@CNTs exhibited excellent electrocatalytic performance, benefitting from the synergistic effect of CNTs that provide a large specific surface area and excellent electrical conductivity, Co,N co-doped carbon nanocages that offer high electrocatalytic activity and hollow nanocage structures that ensure rapid diffusion kinetics. The conductive PEDOT-MIP provided specific binding sites for CBZ detection and significantly amplified the detection signal. The sensor showed superior selectivity for CBZ with an extremely low detection limit of 1.67 pmol L-1. Moreover, the method was successfully applied to detect CBZ in tomato, orange and apple samples, achieving satisfactory recovery and accuracy, thus demonstrating its practical feasibility.
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Affiliation(s)
- Shuya Xue
- Jiangxi Provincial Key Laboratory of Drug Design and Evaluation, Engineering Center of Jiangxi University for Fine Chemicals, Flexible Electronics Innovation Institute (FEII), School of Pharmacy, Jiangxi Science and Technology Normal University, Nanchang 330013, PR China
| | - Jiamin Zou
- Key Laboratory of Crop Physiology, Ecology and Genetic Breeding, Ministry of Education, Key Laboratory of Chemical Utilization of Plant Resources of Nanchang, College of Science, Jiangxi Agricultural University, Nanchang 330045, PR China
| | - Jiapeng Li
- Jiangxi Provincial Key Laboratory of Drug Design and Evaluation, Engineering Center of Jiangxi University for Fine Chemicals, Flexible Electronics Innovation Institute (FEII), School of Pharmacy, Jiangxi Science and Technology Normal University, Nanchang 330013, PR China
| | - Jingkun Xu
- Jiangxi Provincial Key Laboratory of Drug Design and Evaluation, Engineering Center of Jiangxi University for Fine Chemicals, Flexible Electronics Innovation Institute (FEII), School of Pharmacy, Jiangxi Science and Technology Normal University, Nanchang 330013, PR China
| | - Hui Chen
- Key Laboratory of Crop Physiology, Ecology and Genetic Breeding, Ministry of Education, Key Laboratory of Chemical Utilization of Plant Resources of Nanchang, College of Science, Jiangxi Agricultural University, Nanchang 330045, PR China
| | - Linyu Wang
- Key Laboratory of Crop Physiology, Ecology and Genetic Breeding, Ministry of Education, Key Laboratory of Chemical Utilization of Plant Resources of Nanchang, College of Science, Jiangxi Agricultural University, Nanchang 330045, PR China.
| | - Yansha Gao
- Key Laboratory of Crop Physiology, Ecology and Genetic Breeding, Ministry of Education, Key Laboratory of Chemical Utilization of Plant Resources of Nanchang, College of Science, Jiangxi Agricultural University, Nanchang 330045, PR China
| | - Xuemin Duan
- Jiangxi Provincial Key Laboratory of Drug Design and Evaluation, Engineering Center of Jiangxi University for Fine Chemicals, Flexible Electronics Innovation Institute (FEII), School of Pharmacy, Jiangxi Science and Technology Normal University, Nanchang 330013, PR China.
| | - Limin Lu
- Key Laboratory of Crop Physiology, Ecology and Genetic Breeding, Ministry of Education, Key Laboratory of Chemical Utilization of Plant Resources of Nanchang, College of Science, Jiangxi Agricultural University, Nanchang 330045, PR China.
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Basavapura Ravikumar S, Prasanna SB, Shivamurthy SA, Shadakshari S, Nagaraja BM, Rajabathar JR, Al-lohedan HA, Arokiyaraj S. Individual and Simultaneous Electrochemical Detection of Allura Red and Acid Blue 9 in Food Samples Using a Novel La 2YCrO 6 Double Perovskite Decorated on HLNTs as an Electrocatalyst. ACS OMEGA 2024; 9:2568-2577. [PMID: 38250369 PMCID: PMC10795027 DOI: 10.1021/acsomega.3c07330] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/22/2023] [Revised: 12/01/2023] [Accepted: 12/12/2023] [Indexed: 01/23/2024]
Abstract
The present study involved the synthesis of La2YCrO6 double perovskites using a sol-gel approach. Additionally, a sonication method was implemented to prepare La2YCrO6 double perovskites decorated on halloysites (La2YCrO6/HLNTs). The La2YCrO6/HLNTs exhibited remarkable conductivity, electrocatalytic activity, and rapid electron transfer. It is imperative to possess these characteristics when overseeing the concurrent identification of Allura red (AR) and acid blue 9 (AB) in food samples. The development of the La2YCrO6/HLNTs was verified through the utilization of diverse approaches for structural and morphological characterization. The electrochemical techniques were employed to evaluate the analytical techniques of La2YCrO6/HLNTs. Impressively, the La2YCrO6/HLNTs demonstrated exceptional sensitivity, yielding the lowest detection limit for AR at 8.99 nM and AB at 5.14 nM. Additionally, the linear concentration range was 10-120 nM (AR and AB). The sensor that was developed exhibited remarkable selectivity, and the feasibility of AR and AB in the food sample was effectively monitored, resulting in satisfactory recoveries.
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Affiliation(s)
| | - Sanjay Ballur Prasanna
- Department
of Chemical Engineering and Biotechnology, National Taipei University of Technology (Taipei Tech), Taipei 10608, Taiwan
| | | | - Sandeep Shadakshari
- Department
of Chemistry, SJCE, JSS Science and Technology
University, Karnataka 570006, India
| | - Bhari Mallanna Nagaraja
- Centre
for Nano and Material Science (CNMS), Jain
University, Jain Global
Campus, Bangalore 562112, India
| | - Jothi Ramalingam Rajabathar
- Department
of Chemistry, College of Science, King Saud
University, P.O. Box. 2455, Riyadh 11451, Saudi Arabia
| | - Hamad A. Al-lohedan
- Department
of Chemistry, College of Science, King Saud
University, P.O. Box. 2455, Riyadh 11451, Saudi Arabia
| | - Selvaraj Arokiyaraj
- Department
of Food Science and Biotechnology, Sejong
University, Seoul 05006, South Korea
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Casimero C, Smith RB, Davis J. Integration of Riboflavin-Modified Carbon Fiber Mesh Electrode Systems in a 3D-Printed Catheter Hub. MICROMACHINES 2023; 15:79. [PMID: 38258198 PMCID: PMC10818592 DOI: 10.3390/mi15010079] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/29/2023] [Revised: 12/27/2023] [Accepted: 12/29/2023] [Indexed: 01/24/2024]
Abstract
BACKGROUND Catheter line infection is a common complication within clinical environments, and there is a pressing need for technological options to aid in reducing the possibility of sepsis. The early identification of contamination could be pivotal in reducing cases and improving outcomes. METHOD A sensing rationale based on a riboflavin-modified electrode system integrated within a modified 3D-printed catheter needle-free connector is proposed, which can monitor changes in pH brought about by bacterial contamination. RESULTS Riboflavin, vitamin B2, is a biocompatible chemical that possesses a redox-active flavin core that is pH dependent. The oxidation peak potential of the adsorbed riboflavin responds linearly to changes in pH with a near-Nernstian behavior of 63 mV/pH unit and is capable of accurately monitoring the pH of an authentic IV infusate. CONCLUSIONS The proof of principle is demonstrated with an electrode-printed hub design offering a valuable foundation from which to explore bacterial interactions within the catheter lumen with the potential of providing an early warning of contamination.
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Affiliation(s)
| | - Robert B. Smith
- Institute for Materials and Investigative Sciences, University of Central Lancashire, Preston PR1 2HE, UK;
| | - James Davis
- School of Engineering, Ulster University, Belfast BT15 1ED, UK;
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