1
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Kolhe P, Shah M, Nathani A, Shekhar Sharma C, Gandhi S. Block copolymer-derived recessed nanodisk-array electrodes for electrochemical detection of β-lactam antibiotics. Food Chem 2024; 435:137557. [PMID: 37774611 DOI: 10.1016/j.foodchem.2023.137557] [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: 07/21/2023] [Revised: 09/11/2023] [Accepted: 09/19/2023] [Indexed: 10/01/2023]
Abstract
Antimicrobial resistance (AMR) is one of the major socio-economic factors contributing to public health. β-lactams are most commonly prescribed drugs for variety of bacterial infections. Frequent use of antibiotics leads to AMR in humans and animals. The present work is focused on developing an electro-immunosensor to control and regulate the excessive use of antibiotics in animal-based food products. An amphiphilic block co-polymer poly(ethylene oxide-block-methyl methacrylate)(PEO-b-PMMA) was used to fabricate recessed nano-disk array electrode (RNE) and immobilized with Pen-Ab and Cef-Ab antibodies. The Limit of detection (LOD) of RNE working electrode was found to be 14.8 pM for penicillin and 13.8 pM for cefalexin with good selectivity in presence of non-specific antibiotics. Fabricated RNE electrode could detect trace amounts of spiked antigen in real samples of milk, egg and meat extract. Further, mesoporous thin film and microarrays can eventually be used to develop point-of-care diagnosis of antibiotics in animal-based food products.
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Affiliation(s)
- Pratik Kolhe
- DBT-National Institute of Animal Biotechnology (NIAB), Hyderabad 500032, Telangana, India
| | - Maitri Shah
- DBT-National Institute of Animal Biotechnology (NIAB), Hyderabad 500032, Telangana, India
| | - Akash Nathani
- Creative & Advanced Research Based On Nanomaterials (CARBON) Lab, Department of Chemical Engineering, Indian Institute of Technology, Kandi, Sangareddy 502285, Telangana, India
| | - Chandra Shekhar Sharma
- Creative & Advanced Research Based On Nanomaterials (CARBON) Lab, Department of Chemical Engineering, Indian Institute of Technology, Kandi, Sangareddy 502285, Telangana, India
| | - Sonu Gandhi
- DBT-National Institute of Animal Biotechnology (NIAB), Hyderabad 500032, Telangana, India.
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2
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Yin P, Wang J, Li T, Pan Q, Zhu L, Yu F, Zhao YZ, Liu HB. A smartphone-based fluorescent sensor for rapid detection of multiple pathogenic bacteria. Biosens Bioelectron 2023; 242:115744. [PMID: 37826879 DOI: 10.1016/j.bios.2023.115744] [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: 06/20/2023] [Revised: 08/16/2023] [Accepted: 10/06/2023] [Indexed: 10/14/2023]
Abstract
In this study, we developed a fluorescent sensor for the sensitive detection of multiple pathogenic bacteria based on magnetic separation, fluorescent probes, and smartphone image processing. A microchannel device was assembled using high-transparency resin and 3D printing technology. This device was combined with a smartphone and an external lens to develop a fluorescent sensor for autonomous detection of multiple pathogenic bacteria. Three fluorescence probes with different fluorescence were synthesized from highly specific aptamers and tetraphenylethylene derivatives. These fluorescent probes can make Staphylococcus aureus, Escherichia coli, and Pseudomonas aeruginosa emit different colors of fluorescence. Using the enrichment performance of molecularly imprinted materials, separation and detection of bacteria can be achieved simultaneously. Finally, with the Red-Green-Blue (RGB) analysis functionality of a smartphone, real-time field detection was realized with a sensitivity of 102 CFU/mL and a detection time of 40 min. This work provides a simple, inexpensive, and real-time sensor for the detection of multiple pathogens in medical diagnostics, food testing, and environmental analyses.
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Affiliation(s)
- Pengchao Yin
- School of Chemistry and Chemical Engineering, Guangxi University, Nanning, Guangxi Province, 530004, China
| | - Jing Wang
- School of Chemistry and Chemical Engineering, Guangxi University, Nanning, Guangxi Province, 530004, China
| | - Ting Li
- School of Chemistry and Chemical Engineering, Guangxi University, Nanning, Guangxi Province, 530004, China
| | - Qingbin Pan
- School of Chemistry and Chemical Engineering, Guangxi University, Nanning, Guangxi Province, 530004, China
| | - Linchen Zhu
- School of Chemistry and Chemical Engineering, Guangxi University, Nanning, Guangxi Province, 530004, China
| | - Feifei Yu
- School of Chemistry and Chemical Engineering, Guangxi University, Nanning, Guangxi Province, 530004, China
| | - Yong-Zhen Zhao
- Guangxi Shrimp Breeding Engineering Technology Research Center, Guangxi Academy of Fisheries Sciences, Nanning, China
| | - Hai-Bo Liu
- School of Chemistry and Chemical Engineering, Guangxi University, Nanning, Guangxi Province, 530004, China.
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3
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Yuan H, Li Y, Lv J, An Y, Guan D, Liu J, Tu C, Wang X, Zhou H. Recent Advances in Fluorescent Nanoprobes for Food Safety Detection. Molecules 2023; 28:5604. [PMID: 37513475 PMCID: PMC10385937 DOI: 10.3390/molecules28145604] [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: 06/28/2023] [Revised: 07/21/2023] [Accepted: 07/22/2023] [Indexed: 07/30/2023] Open
Abstract
Fluorescent nanoprobes show similar fluorescence properties to traditional organic dyes, but the addition of nanotechnology accurately controls the size, shape, chemical composition, and surface chemistry of the nanoprobes with unique characteristics and properties, such as bright luminescence, high photostability, and strong biocompatibility. For example, modifying aptamers or antibodies on a fluorescent nanoprobe provides high selectivity and specificity for different objects to be tested. Fluorescence intensity, life, and other parameters of targets can be changed by different sensing mechanisms based on the unique structural and optical characteristics of fluorescent nanoprobes. What's more, the detection of fluorescent nanoprobes is cost-saving, simple, and offers great advantages in rapid food detection. Sensing mechanisms of fluorescent nanoprobes were introduced in this paper, focusing on the application progress in pesticide residues, veterinary drug residues, heavy metals, microbes, mycotoxins, and other substances in food safety detection in recent years. A brief outlook for future development was provided as well.
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Affiliation(s)
- Huanxiang Yuan
- Department of Chemistry, College of Chemistry and Materials Engineering, Beijing Technology and Business University, Beijing 100048, China
| | - Yutong Li
- Department of Chemistry, College of Chemistry and Materials Engineering, Beijing Technology and Business University, Beijing 100048, China
| | - Jiaqi Lv
- Institute of Analysis and Testing, Beijing Academy of Science and Technology (Beijing Center for Physical & Chemical Analysis), Beijing 100089, China
- Food Science and Engineering College, Beijing University of Agriculture, Beijing 102206, China
| | - Yunhe An
- Institute of Analysis and Testing, Beijing Academy of Science and Technology (Beijing Center for Physical & Chemical Analysis), Beijing 100089, China
| | - Di Guan
- Institute of Analysis and Testing, Beijing Academy of Science and Technology (Beijing Center for Physical & Chemical Analysis), Beijing 100089, China
| | - Jia Liu
- Institute of Analysis and Testing, Beijing Academy of Science and Technology (Beijing Center for Physical & Chemical Analysis), Beijing 100089, China
| | - Chenxiao Tu
- Institute of Analysis and Testing, Beijing Academy of Science and Technology (Beijing Center for Physical & Chemical Analysis), Beijing 100089, China
| | - Xiaoyu Wang
- School of Materials Science and Engineering, University of Science and Technology Beijing, Beijing 100083, China
| | - Huijuan Zhou
- Institute of Analysis and Testing, Beijing Academy of Science and Technology (Beijing Center for Physical & Chemical Analysis), Beijing 100089, China
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4
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Yang X, Li J, Tan X, Yang X, Song P, Ming D, Yang Y. Ratiometric fluorescence probe integrated with smartphone for visually detecting lipopolysaccharide. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2023; 286:121961. [PMID: 36265302 DOI: 10.1016/j.saa.2022.121961] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/18/2022] [Revised: 09/23/2022] [Accepted: 10/06/2022] [Indexed: 06/16/2023]
Abstract
A portable instrument-free detection method for lipopolysaccharide (LPS) analysis was developed based on dual-emission ratiometric fluorescence sensing system. Herein, red-emitting Au nanoclusters (Au NCs) were as reference probe, while blue-emitting fluorescent silica quantum dots (Si QDs) were as response probe. Additionally, the aptamer of LPS was covalently grafted to the surface of Si QDs in order to specific recognize the LPS. According to the changes of fluorescence intensityratio (FL ratio, I461 nm/I643 nm) with the concentrations of LPS, the linear equation was fitted with the range of 50-3000 ng/mL, and the limit of detection (LOD) was 29.3 ng/mL. As a practical application, this method was employed to analyze LPS in normal saline with the recovery rate of 97.7-103.8 %. The color picker platform in the smartphone was used to transform the detection picture to the process of Red, Green and Blue (RGB) for visual detection of LPS. The low-cost and easy-carry method reported here presents broad merits for the visually quantitative detection of LPS.
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Affiliation(s)
- Xinyu Yang
- College of Biological and Pharmaceutical Engineering, Nanjing Tech University, Nanjing 211816, PR China; College of Food and Pharmaceutical Engineering, Nanjing Normal University, Nanjing 210023, PR China
| | - Jiayi Li
- College of Food and Pharmaceutical Engineering, Nanjing Normal University, Nanjing 210023, PR China
| | - Xinhui Tan
- College of Food and Pharmaceutical Engineering, Nanjing Normal University, Nanjing 210023, PR China
| | - Xuejiao Yang
- College of Pharmacy, Nanjing Tech University, Nanjing 211816, PR China
| | - Ping Song
- College of Food and Pharmaceutical Engineering, Nanjing Normal University, Nanjing 210023, PR China.
| | - Dengming Ming
- College of Biological and Pharmaceutical Engineering, Nanjing Tech University, Nanjing 211816, PR China.
| | - Yaqiong Yang
- College of Food and Pharmaceutical Engineering, Nanjing Normal University, Nanjing 210023, PR China.
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5
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Wei P, Xiao L, Gou Y, He F, Wang P, Yang X. A novel peptide-based relay fluorescent probe with a large Stokes shift for detection of Hg 2+ and S 2- in 100 % aqueous medium and living cells: Visual detection via test strips and smartphone. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2023; 285:121836. [PMID: 36126620 DOI: 10.1016/j.saa.2022.121836] [Citation(s) in RCA: 11] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/06/2022] [Revised: 08/08/2022] [Accepted: 09/01/2022] [Indexed: 06/15/2023]
Abstract
Herein, a novel relay peptide-based fluorescent probe DGRK was synthesized via solid phase peptide synthesis (SPPS) technology. DGRK exhibited excellent water-solubility, good stability, remarkably large Stokes shift (230 nm) and high selectivity response to Hg2+ with a non-fluorescence complex DGRK-Hg2+ formation via a 1:1 binding mode. Further studies indicated that the DGRK-Hg2+ complex could act as a secondary probe for rapidly and sequentially detecting S2- based on fluorescent "off-on" response, and without interference from a range of anions. The limit of detection (LOD) for Hg2+ and S2- were calculated to be 33.6 nM and 60.9 nM, respectively. In addition, The reversibility of interaction of confirmed that the continuous and reversible recognition behavior of Hg2+ and S2- by the probe DGRK, and could be cycled more than 5 times. In addition, DGRK could be successfully applied to the fluorescence imaging of Hg2+ and S2- in two living cells based on excellent cells permeability and low cytotoxicity. Meanwhile, DGRK was successfully used to create the low-cost and portable test strips for visual detection and rapid analysis under 365 nm UV lamp, and the test strips combined with a smartphone (RGB color) was successfully applied to the semi-quantitative analysis and monitoring of dynamic changes of Hg2+ levels.
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Affiliation(s)
- Ping Wei
- Chemical Synthesis and Pollution Control Key Laboratory of Sichuan Province, College of Chemistry and Chemical Engineering, China West Normal University, Shida Road 1#, Nanchong 637009, PR China
| | - Lin Xiao
- Chemical Synthesis and Pollution Control Key Laboratory of Sichuan Province, College of Chemistry and Chemical Engineering, China West Normal University, Shida Road 1#, Nanchong 637009, PR China
| | - Yuting Gou
- Chemical Synthesis and Pollution Control Key Laboratory of Sichuan Province, College of Chemistry and Chemical Engineering, China West Normal University, Shida Road 1#, Nanchong 637009, PR China
| | - Fang He
- Chemical Synthesis and Pollution Control Key Laboratory of Sichuan Province, College of Chemistry and Chemical Engineering, China West Normal University, Shida Road 1#, Nanchong 637009, PR China
| | - Peng Wang
- Chemical Synthesis and Pollution Control Key Laboratory of Sichuan Province, College of Chemistry and Chemical Engineering, China West Normal University, Shida Road 1#, Nanchong 637009, PR China; Key Laboratories of Fine Chemicals and Surfactants in Sichuan Provincial Universities, Sichuan University of Science & Engineering, Zigong 643000, PR China.
| | - Xiupei Yang
- Chemical Synthesis and Pollution Control Key Laboratory of Sichuan Province, College of Chemistry and Chemical Engineering, China West Normal University, Shida Road 1#, Nanchong 637009, PR China.
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6
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Zeng JY, Liang YQ, Wu YN, Wu XY, Lai JP, Sun H. Synthesis and application of novel N, Si-carbon dots for the ratiometric fluorescent monitoring of the antibiotic balofloxacin in tablets and serum. RSC Adv 2022; 12:29585-29594. [PMID: 36320748 PMCID: PMC9574644 DOI: 10.1039/d2ra02932d] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2022] [Accepted: 09/06/2022] [Indexed: 11/07/2022] Open
Abstract
A ratiometric fluorescent probe with blue-emission fluorescence based on N, Si-doped carbon dots (N, Si-CDs) for the detection of balofloxacin (BLFX) was synthesized by simple one-pot hydrothermal carbonization using methotrexate and 3-aminopropyltriethoxysilane (APTES) as carbon materials. The obtained N, Si-CDs showed dual-emission band fluorescence characterization at 374 nm and 466 nm. Furthermore, the synthesized N, Si-CD probe exhibited evidence of ratiometric fluorescence emission characteristics (F466/F374) toward BLFX along with a decrease in fluorescence intensity at 374 nm and an increase in fluorescence intensity at 466 nm. Based on this probe, a highly sensitive and fast detection method for the analysis of BLFX has been established with a linear range of 1–60 μM and a low detection limit of 0.1874 μM, as well as a rapid response time of 5.0 s. The developed assay has also been successfully applied for the detection of BLFX in tablets and rat serum. A ratiometric fluorescent probe with blue-emission fluorescence based on N, Si-doped carbon dots (N, Si-CDs) for the detection of balofloxacin (BLFX) was synthesized by a simple method.![]()
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Affiliation(s)
- Jia-Yu Zeng
- School of Chemistry, South China Normal UniversityGuangzhou 510006China
| | - Yu-Qi Liang
- School of Chemistry, South China Normal UniversityGuangzhou 510006China
| | - Yan-Ni Wu
- School of Chemistry, South China Normal UniversityGuangzhou 510006China
| | - Xiao-Yi Wu
- School of Chemistry, South China Normal UniversityGuangzhou 510006China,College of Environmental Science & Engineering, Guangzhou UniversityGuangzhou 510006China
| | - Jia-Ping Lai
- School of Chemistry, South China Normal UniversityGuangzhou 510006China
| | - Hui Sun
- College of Environmental Science & Engineering, Guangzhou UniversityGuangzhou 510006China
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7
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Kolhe P, Roberts A, Gandhi S. Fabrication of an ultrasensitive electrochemical immunosensor coupled with biofunctionalized zero-dimensional graphene quantum dots for rapid detection of cephalexin. Food Chem 2022; 398:133846. [DOI: 10.1016/j.foodchem.2022.133846] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2022] [Revised: 07/05/2022] [Accepted: 07/31/2022] [Indexed: 12/18/2022]
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8
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A turn-on fluorescent aptasensor for ampicillin detection based on gold nanoparticles and CdTe QDs. Microchem J 2022. [DOI: 10.1016/j.microc.2022.107454] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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9
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Iranifam M, Dadashi Z. A new NiS nanoparticles-enhanced chemiluminescence method for determination of cephalexin in the pharmaceuticals and spiked human serum. LUMINESCENCE 2022; 37:1682-1688. [PMID: 35860860 DOI: 10.1002/bio.4343] [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: 03/16/2022] [Revised: 06/11/2022] [Accepted: 07/18/2022] [Indexed: 11/08/2022]
Abstract
It is reported that NiS nanoparticles (NPs) can enhance the light emission from chemiluminescence (CL) reaction of luminol-O2 (λmax = 425 nm), remarkably. Additionally, it was shown that cephalexin (CEF) could further increase the intensity of light emitted from NiS NPs-luminol-O2 CL reaction. Inspired in these findings, we intended to develop a new and straightforward CL method for the determination of CEF. A calibration graph over the range of 1.00 × 10-6 - 4.00 × 10-5 mol L-1 was established. The limit of detection (LOD) of the CL method was 8.00 × 10-7 mol L-1 . The coefficient of variation (CV) of the CL methods was 2.20% (n = 6) for the measurement of 6.00 × 10-6 mol L-1 CEF. NiS NPs were produced by exploiting the precipitation method and identified by employing several spectroscopic approaches. The proposed CL method was successfully used to measure CEF in some pharmaceutical and spiked human serum. The chemical mechanism governing the CL reaction was briefly explained.
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Affiliation(s)
- Mortaza Iranifam
- Department of Chemistry, Faculty of Science, University of Maragheh, Maragheh, Iran
| | - Zahra Dadashi
- Department of Chemistry, Faculty of Science, University of Maragheh, Maragheh, Iran
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10
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Shen Y, Wei Y, Zhu C, Cao J, Han DM. Ratiometric fluorescent signals-driven smartphone-based portable sensors for onsite visual detection of food contaminants. Coord Chem Rev 2022. [DOI: 10.1016/j.ccr.2022.214442] [Citation(s) in RCA: 16] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
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11
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Pang Y, Cao Y, Han J, Xia Y, He Z, Sun L, Liang J. A novel fluorescence sensor based on Zn porphyrin MOFs for the detection of bisphenol A with highly selectivity and sensitivity. Food Control 2022. [DOI: 10.1016/j.foodcont.2021.108551] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
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12
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Guo L, Chen S, Yu YL, Wang JH. A Smartphone Optical Device for Point-of-Care Testing of Glucose and Cholesterol Using Ag NPs/UiO-66-NH 2-Based Ratiometric Fluorescent Probe. Anal Chem 2021; 93:16240-16247. [PMID: 34813276 DOI: 10.1021/acs.analchem.1c04126] [Citation(s) in RCA: 30] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Point-of-care testing (POCT) with the advantages of simplicity, rapidity, portability, and low-cost is of great importance to improve healthcare, especially in resource-limited settings and home healthcare settings. Moreover, it is a great challenge to quantitative POCT of multiplexed biomarkers within a single accessible assay but provides enhanced diagnostic accuracy and improved diagnostic efficiency. Herein, a smartphone optical device has been designed for POCT of glucose and cholesterol in metabolic syndrome patients using a ratiometric fluorescent sensor. The sensing system of Ag NPs/UiO-66-NH2 and o-phenylenediamine presents a dual-emission response to H2O2 (the main product of glucose and cholesterol catalyzed by glucose oxidase and cholesterol oxidase) on account of the inner filter effect, resulting in an increase in the response of the fluorescence intensity ratio (F555 nm/F425 nm) accompanied by a distinguishable color transition from blue to yellow green. After compositing probes with a flexible substrate, the obtained test strip can be integrated with a smartphone-based portable platform to read RGB values for accurate testing of glucose and cholesterol with both detection limits of 10 μmol L-1, which are hundreds of times lower than their concentrations in human serum. With the advantages of low-cost, ease of operation, and broad adaptability, this smartphone optical device holds great potential for portable detection of numerous targets in personalized healthcare and clinical diagnosis.
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Affiliation(s)
- Lan Guo
- Research Center for Analytical Sciences, Department of Chemistry, College of Sciences, Northeastern University, Box 332, Shenyang 110819, China
| | - Shuai Chen
- Research Center for Analytical Sciences, Department of Chemistry, College of Sciences, Northeastern University, Box 332, Shenyang 110819, China
| | - Yong-Liang Yu
- Research Center for Analytical Sciences, Department of Chemistry, College of Sciences, Northeastern University, Box 332, Shenyang 110819, China
| | - Jian-Hua Wang
- Research Center for Analytical Sciences, Department of Chemistry, College of Sciences, Northeastern University, Box 332, Shenyang 110819, China
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13
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Jalili R, Irani-Nezhad MH, Khataee A, Joo SW. A ratiometric fluorescent probe based on carbon dots and gold nanocluster encapsulated metal-organic framework for detection of cephalexin residues in milk. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2021; 262:120089. [PMID: 34175757 DOI: 10.1016/j.saa.2021.120089] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/10/2021] [Revised: 06/13/2021] [Accepted: 06/14/2021] [Indexed: 06/13/2023]
Abstract
Herein, we report a ratiometric fluorescent probe based on in situ incorporation of both Gold nanoclusters (AuNCs) and Green emitting carbon dots (gCDs) into zeolitic imidazolate framework-8 (ZIF-8) to analysis of Cephalexin (CFX). Under a single excitation wavelength of 400 nm, the sensor exhibits dual-emissions centered at 520 and 630 nm. The fluorescence of AuNCs (630 nm) is selectively quenched by CFX, whereas the fluorescence of gCDs (520 nm) remainsalmostconstant. The ratiometric fluorescence signal (F520/F630) of the prepared composite (gCDc/AuNCs @ ZIF-8) is linearly proportional to the concentration of CFX from 0.1 to 6 ng/mL with a low detection limit (LOD) of 0.04 ng/mL, which is below the maximum residues limit (MRL) of 100 ng/mL set by the Food and Drug Administration (FDA). Moreover, the designed sensing platform was successfully applied to detect CFX in the milk samples.
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Affiliation(s)
- Roghayeh Jalili
- Research Laboratory of Advanced Water and Wastewater Treatment Processes, Department of Applied Chemistry, Faculty of Chemistry, University of Tabriz, 51666-16471 Tabriz, Iran
| | - Mahsa Haddad Irani-Nezhad
- Research Laboratory of Advanced Water and Wastewater Treatment Processes, Department of Applied Chemistry, Faculty of Chemistry, University of Tabriz, 51666-16471 Tabriz, Iran
| | - Alireza Khataee
- Research Laboratory of Advanced Water and Wastewater Treatment Processes, Department of Applied Chemistry, Faculty of Chemistry, University of Tabriz, 51666-16471 Tabriz, Iran; Department of Environmental Engineering, Gebze Technical University, 41400 Gebze, Turkey; Department of Material Science and Physical Chemistry of Materials, South Ural State University, 454080 Chelyabinsk, Russian Federation.
| | - Sang Woo Joo
- School of Mechanical Engineering, Yeungnam University, Gyeongsan 38541, South Korea.
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14
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Liu J, Fu T, Wu F, Wang H. Ratiometric fluorescence and smartphone dual-mode detection of glutathione using carbon dots coupled with Ag +-triggered oxidation of o-phenylenediamine. NANOTECHNOLOGY 2021; 32:445501. [PMID: 34330104 DOI: 10.1088/1361-6528/ac1978] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/05/2021] [Accepted: 07/30/2021] [Indexed: 06/13/2023]
Abstract
Developing ratiometric fluorescence and smartphone dual-mode bioanalysis methods is important but challenging. A ratiometric fluorescence method for determining glutathione (GSH) using carbon dots (CDs) and Ag+-triggered o-phenylenediamine (OPD) oxidation is described here. Ag+oxidizes OPD to give 2,3-diaminophenazine (oxOPD), which effectively quenches CD fluorescence at 436 nm through the inner filter effect and causes a new emission peak at 561 nm. GSH chelates with Ag+and prevents the Ag+oxidizing OPD and therefore effectively preserves CD emission at 436 nm (blue) and allows only weak oxOPD fluorescence at 561 nm (orange) to occur. The oxOPD to CD fluorescence intensity ratio decreased linearly as the GSH concentration increased in the range 0-150 nM, and the detection limit was 15 nM. The ratiometric fluorescence probe lit with an ultraviolet lamp clearly changed color from orange to blue as the GSH concentration increased. An image was acquired using a smartphone camera and converted into digital values. The blue and red channel ratio was calculated and used to quantify GSH. The method therefore allows dual-mode detection of GSH.
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Affiliation(s)
- Jinshui Liu
- College of Chemistry and Materials Science, Anhui Key Laboratory of Chemo/Biosensing, The Key Laboratory of Functional Molecular Solids, Ministry of Education, Anhui Laboratory of Molecule-based Materials, Anhui Normal University, Wuhu 241000, People's Republic of China
| | - Ting Fu
- College of Chemistry and Materials Science, Anhui Key Laboratory of Chemo/Biosensing, The Key Laboratory of Functional Molecular Solids, Ministry of Education, Anhui Laboratory of Molecule-based Materials, Anhui Normal University, Wuhu 241000, People's Republic of China
| | - Fangfei Wu
- College of Chemistry and Materials Science, Anhui Key Laboratory of Chemo/Biosensing, The Key Laboratory of Functional Molecular Solids, Ministry of Education, Anhui Laboratory of Molecule-based Materials, Anhui Normal University, Wuhu 241000, People's Republic of China
| | - Huaxin Wang
- College of Chemistry and Materials Science, Anhui Key Laboratory of Chemo/Biosensing, The Key Laboratory of Functional Molecular Solids, Ministry of Education, Anhui Laboratory of Molecule-based Materials, Anhui Normal University, Wuhu 241000, People's Republic of China
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15
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Zhu X, Jiang W, Zhao Y, Liu H, Sun B. Single, dual and multi-emission carbon dots based optosensing for food safety. Trends Food Sci Technol 2021. [DOI: 10.1016/j.tifs.2021.03.005] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
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