1
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Guo M, Bi M, Zhang F, Ye X, Ma P, Gao D, Song D. A dual-response ratiometric fluorescent sensor for oxytetracycline determination in milk and mutton samples. Talanta 2024; 277:126382. [PMID: 38852347 DOI: 10.1016/j.talanta.2024.126382] [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: 04/03/2024] [Revised: 05/28/2024] [Accepted: 06/05/2024] [Indexed: 06/11/2024]
Abstract
Owing to the adverse effects of oxytetracycline (OTC) residues on human health, it is of great importance to construct a rapid and effective strategy for OTC detection. Herein, we developed a dual-response fluorescence sensing platform based on molybdenum sulfide quantum dots (MoS2 QDs) and europium ions (Eu3+) for ratiometric detection of OTC. The MoS2 QDs, synthesized through an uncomplicated one-step hydrothermal approach, upon OTC integration into the MoS2 QDs/Eu3+ sensing system, exhibit a significant quenching of blue fluorescence due to the inner filter effect (IFE), simultaneously enhancing the distinct red emission of Eu3+ at 624 nm, a phenomenon attributed to the antenna effect (AE). This sensor demonstrates exceptional selectivity and sensitivity towards OTC, characterized by a linear detection range of 0.2-10 μM and a notably low detection limit of 2.21 nM. Furthermore, we achieved a visual semi-quantitative assessment of OTC through the discernible fluorescence color transition from blue to red under a 365 nm ultraviolet lamp. The practical applicability of this sensor was validated through the successful detection of OTC in milk and mutton samples, underscoring its potential as a robust tool for OTC monitoring in foodstuffs to safeguard food safety.
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Affiliation(s)
- Mengjia Guo
- College of Chemistry, Jilin Province Research Center for Engineering and Technology of Spectral Analytical Instruments, Jilin University, Qianjin Street 2699, Changchun, 130012, China
| | - Ming Bi
- Hospital of Stomatology, Jilin University, Qinghua Road 1500, Changchun, 130012, China
| | - Fangmei Zhang
- XNA Platform, Institute of Pharmaceutical Sciences, School of Pharmaceutical Sciences, Zhengzhou University, Zhengzhou, 450001, China
| | - Xiwen Ye
- College of Chemistry, Jilin Province Research Center for Engineering and Technology of Spectral Analytical Instruments, Jilin University, Qianjin Street 2699, Changchun, 130012, China
| | - Pinyi Ma
- College of Chemistry, Jilin Province Research Center for Engineering and Technology of Spectral Analytical Instruments, Jilin University, Qianjin Street 2699, Changchun, 130012, China.
| | - Dejiang Gao
- College of Chemistry, Jilin Province Research Center for Engineering and Technology of Spectral Analytical Instruments, Jilin University, Qianjin Street 2699, Changchun, 130012, China.
| | - Daqian Song
- College of Chemistry, Jilin Province Research Center for Engineering and Technology of Spectral Analytical Instruments, Jilin University, Qianjin Street 2699, Changchun, 130012, China.
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2
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Li Z, Li S, Jiang L, Xiao J, Niu J, Zhang Y, Chen C, Zhou Q. Construction of nitrogen-doped carbon dots-based fluorescence probe for rapid, efficient and sensitive detection of chlortetracycline. CHEMOSPHERE 2024; 361:142535. [PMID: 38844108 DOI: 10.1016/j.chemosphere.2024.142535] [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: 02/23/2024] [Revised: 05/21/2024] [Accepted: 06/03/2024] [Indexed: 06/10/2024]
Abstract
Antibiotics are widely used in clinical medicine due to their excellent antibacterial abilities. As typical emerging pollutants, their misuse can lead to excess antibiotics entering the environment, causing antimicrobial resistance and leading to serious health problems via food chain. Herein, a nano-fluorescent probe based on nitrogen-doped carbon dots (N-CDs) was constructed for the sensitive detection of chlortetracycline (CTC). N-CDs with stable fluorescence were synthesized by hydrothermal method using alizarin red and melamine as raw materials. The N-CDs exhibited significant independence to excitation wavelength. The fluorescence of N-CDs was significantly quenched by CTC ascribing to the fluorescence resonance energy transfer mechanism. The concentration of N-CDs, solution pH and incubation time were optimized to obtain the optimal detection parameters. Under optimal conditions, CTC exhibited excellent linearity over the range of 20-1200 μg/L, and the detection limit was 8.74 μg/L. The method was validated with actual water samples and achieved satisfied spiked recoveries of 97.6-102.6%. Therefore, the proposed method has significant application value in the detection of CTC in waters.
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Affiliation(s)
- Zhi Li
- College of Chemical Engineering and Environment, China University of Petroleum-Beijing, Beijing, 102249, China
| | - Shuangying Li
- College of Chemical Engineering and Environment, China University of Petroleum-Beijing, Beijing, 102249, China
| | - Liushan Jiang
- College of Chemical Engineering and Environment, China University of Petroleum-Beijing, Beijing, 102249, China
| | - Junping Xiao
- School of Chemistry and Biological Engineering, University of Science and Technology Beijing, Beijing, 100083, China
| | - Jingwen Niu
- College of Chemical Engineering and Environment, China University of Petroleum-Beijing, Beijing, 102249, China
| | - Yue Zhang
- College of Chemical Engineering and Environment, China University of Petroleum-Beijing, Beijing, 102249, China
| | - Chunmao Chen
- College of Chemical Engineering and Environment, China University of Petroleum-Beijing, Beijing, 102249, China.
| | - Qingxiang Zhou
- College of Chemical Engineering and Environment, China University of Petroleum-Beijing, Beijing, 102249, China.
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3
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Jiang YX, Rani A, Nguyen NT, Nguyen TMP, Chang CT. Electrochemical detection of oxytetracycline employing sugarcane carbon modified graphite electrode. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2024; 31:41734-41744. [PMID: 38030840 DOI: 10.1007/s11356-023-31090-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/29/2023] [Accepted: 11/13/2023] [Indexed: 12/01/2023]
Abstract
The present study used CeO2-Co3O4 quantum dots@porous carbon/multiwalled carbon nanotube (CeO2-Co3O4 QDs@PC/MWCNT/GE) composites to modify graphite electrodes to fabricate high-sensitivity electrochemical sensors to detect the presence of oxytetracycline (OTC). The quantum dots were made from waste sugarcane bagasse. The electrochemical analysis demonstrated the superior electrochemical performance of CeO2-Co3O4 QDs@PC/MWCNT/GE, with a peak current density of 1.276 mA/cm2. Electrochemical impedance spectroscopy (EIS) revealed lower impedance values for CeO2-Co3O4 QDs@PC/MWCNT/GE compared to other electrodes, indicating enhanced conductivity. The modified electrode exhibited an enlarged electrochemically active area, with values of 0.602 cm2, almost seven times that of the bare graphite electrode (0.079 cm2). The results showed that the CeO2-Co3O4 QDs@PC/MWCNT/GE had excellent performance for OTC detection, and its linear calibration range was 1.007 × 10-8 to 2.04 × 10-7 M (i.e., 0.005-0.1 ppm) and 1.007 × 10-6 to 1.209 × 10-4 M (i.e., 0.5-60 ppm). The limit of detection and limit of quantification were 1.23 nM (0.61 ppb) and 4.09 nM (2.03 ppb) (S/N = 3), respectively. The electrode demonstrated long-term stability for up to 7 weeks. This method provides a new way to prepare electrochemical sensors for OTC detection.
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Affiliation(s)
- Ya-Xuan Jiang
- Department of Environmental Engineering, National Ilan University, Yilan, 260, Taiwan ROC
- Department of Environmental Engineering, National Chung Hsing University, Hsinchu, 26047, Taiwan ROC
| | - Aishwarya Rani
- Department of Environmental Engineering, National Ilan University, Yilan, 260, Taiwan ROC
- Department of Bioenvironmental Systems Engineering, National Taiwan University, Taipei, 10617, Taiwan ROC
| | - Nhat-Thien Nguyen
- Department of Chemical Engineering and Biotechnology, National Taipei University of Technology, Taipei, 10608, Taiwan ROC
| | - Thi-Minh-Phuong Nguyen
- Faculty of Environmental and Natural Sciences, Duy Tan University, Da Nang, 550000, Vietnam
- Institute of Research and Development, Duy Tan University, Da Nang, 550000, Vietnam
| | - Chang-Tang Chang
- Department of Environmental Engineering, National Ilan University, Yilan, 260, Taiwan ROC.
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4
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Chen Y, Zhong X, Yang Q, Chen H, Hao N, Hu S. A perovskite-based electrochemiluminescence aptasensor for tetracycline screening. LUMINESCENCE 2024; 39:e4717. [PMID: 38504447 DOI: 10.1002/bio.4717] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2024] [Revised: 02/11/2024] [Accepted: 02/19/2024] [Indexed: 03/21/2024]
Abstract
Tetracyclines are currently the most commonly used class of antibiotics, and their residue issue significantly impacts public health safety. In this study, a surface modification of perovskite with cetyltrimethylammonium bromide led to the generation of stable electrochemiluminescence (ECL) emitters in aqueous systems and improved the biocompatibility of perovskite. A perovskite quantum dot-based ECL sensing strategy was developed. Utilizing the corresponding aptamer of the antibiotics, strain displacement reactions were triggered, disrupting the ECL quenching system composed of perovskite and Ag nanoclusters (Ag NCs) on the electrode surface, generating a signal to achieve quantitative detection of several common tetracycline antibiotics. The perovskite quantum dot provided a strong and stable initial signal, while the efficient catalytic activity of the silver cluster enhanced the recognition sensitivity. Tetracycline, chlortetracycline, and oxytetracycline were used as examples to demonstrate the differentiation and quantitative detection through this method. In addition, the aptasensor exhibited analytical performance with the linear range (0.1-10 μM OTC) and good recovery rates of 94.7% to 101.6% in real samples. This approach has the potential to become a sensitive and practical approach for assessing antibiotic residues.
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Affiliation(s)
- Yuxin Chen
- Department of Health Inspection and Quarantine, School of Public Health, Fujian Medical University, Fuzhou, Fujian, China
| | - Xinyi Zhong
- Department of Health Inspection and Quarantine, School of Public Health, Fujian Medical University, Fuzhou, Fujian, China
| | - Qiling Yang
- Department of Health Inspection and Quarantine, School of Public Health, Fujian Medical University, Fuzhou, Fujian, China
| | - Huiping Chen
- Department of Health Inspection and Quarantine, School of Public Health, Fujian Medical University, Fuzhou, Fujian, China
| | - Nan Hao
- School of Chemistry and Materials Science, Nanjing University of Information Science & Technology, Nanjing, China
| | - Shanwen Hu
- Department of Health Inspection and Quarantine, School of Public Health, Fujian Medical University, Fuzhou, Fujian, China
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5
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Zhang J, Liu Y, Cui X, Cao Y, Li Y, Fang G, Wang S. A Smartphone-Integrated Molecularly Imprinted Fluorescence Sensor for Visual Detection of Chlortetracycline Based on N,P-Codoped Carbon Dots Decorated Iron-Based Metal-Organic Frameworks. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2023; 71:16303-16309. [PMID: 37856445 DOI: 10.1021/acs.jafc.3c05406] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/21/2023]
Abstract
The residue of chlortetracycline is potentially hazardous to human health; it is meaningful to exploit a portable, rapid, sensitive, and selective method for detection of chlortetracycline (CTC). In this study, a novel fluorescence bionic sensing probe (NH2-MIL-53&N,P-CDs@MIP) was successfully prepared based on the nitrogen and phosphorus codoped carbon dots decorated iron-based metal-organic frameworks combining with molecular imprinted polymer for the detection of CTC. A fluorescence intensity-responsive "on-off" detection of CTC on account of the inner-filter effect (IFE) was achieved by NH2-MIL-53&N,P-CDs@MIP. Under the optimal conditions, the fluorescence quenching degree of NH2-MIL-53&N,P-CDs@MIP presented a good linear relationship with the CTC concentration in the range 0.06-30 μg mL-1 and the limit of detection (LOD) was 0.019 μg mL-1. The fluorescent probe was applied to detect CTC in milk samples, and experimental results showed a good recovery rate (88.73%-96.28%). Additionally, a smartphone-integrated fluorescence sensing device based on NH2-MIL-53&N,P-CDs@MIP was exploited to replace the expensive and bulky fluorescence spectrophotometer for quantitative determination of CTC with the LOD of 0.033 μg mL-1. The sensing system showed high selectivity, strong stability, high specificity, and portability, which provide a great strategy for the quantitative detection of antibiotic residue.
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Affiliation(s)
- Jinni Zhang
- State Key Laboratory of Food Nutrition and Safety, Tianjin University of Science and Technology, Tianjin 300457, China
| | - Yan Liu
- State Key Laboratory of Food Nutrition and Safety, Tianjin University of Science and Technology, Tianjin 300457, China
| | - Xueyan Cui
- State Key Laboratory of Food Nutrition and Safety, Tianjin University of Science and Technology, Tianjin 300457, China
| | - Yichuan Cao
- State Key Laboratory of Food Nutrition and Safety, Tianjin University of Science and Technology, Tianjin 300457, China
| | - Yan Li
- State Key Laboratory of Food Nutrition and Safety, Tianjin University of Science and Technology, Tianjin 300457, China
| | - Guozhen Fang
- State Key Laboratory of Food Nutrition and Safety, Tianjin University of Science and Technology, Tianjin 300457, China
| | - Shuo Wang
- State Key Laboratory of Food Nutrition and Safety, Tianjin University of Science and Technology, Tianjin 300457, China
- Tianjin Key Laboratory of Food Science and Health, School of Medicine, Nankai University, Tianjin, 300071, China
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6
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Hu M, Hu X, Wang G, Cheng Y, Yu X, Huang X, Li Y. A fluorescent lateral flow immunoassay based on CdSe/CdS/ZnS quantum dots for sensitive detection of olaquindox in feedstuff. Food Chem 2023; 419:136025. [PMID: 37030205 DOI: 10.1016/j.foodchem.2023.136025] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2022] [Revised: 03/15/2023] [Accepted: 03/21/2023] [Indexed: 04/07/2023]
Abstract
A portable fluorescence immunosensor based on the CdSe/CdS/ZnS quantum dots (QDs) with multiple-shell structure was fabricated for the precise quantification of olaquindox (OLA). The QDs labeled anti-OLA antibody used as bioprobe played an important role in the design and preparation of a lateral flow test strip. Due to the strong fluorescent intensity of QDs, the sensitivity is greatly improved. The quantitative results were obtained using a fluorescent strip scan reader within 8 min, and the calculated limit of detection for OLA at 0.12 µg/kg, which was 2.7 times more sensitive than that of the conventional colloidal gold-based strips method. Acceptable recovery of 85.0%-95.5% was obtained by the spiked samples. This newly established QDs-based strip immunoassay method is suitable for the on-site detection and rapid initial screening of OLA in swine feedstuff, and is potentially applied for the detection of other veterinary drugs to ensure food safety.
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7
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Tang Y, Meng H, Wang W, Song Y, Wang S, Li Z, Wang X, Hu X. Off-line magnetic Fe3O4@SiO2@MIPs-based solid phase dispersion extraction coupling with HPLC for the simultaneous determination of olaquindox and its metabolite in fish muscle and milk samples. Food Chem X 2023; 17:100611. [PMID: 36974171 PMCID: PMC10039225 DOI: 10.1016/j.fochx.2023.100611] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2022] [Revised: 02/20/2023] [Accepted: 02/22/2023] [Indexed: 02/27/2023] Open
Abstract
An innovative core-shell magnetic molecularly imprinted polymers, Fe3O4@SiO2@MIPs, was elaborately tailored for specific separation and enrichment of olaquindox (OLA) and its metabolic marker methyl-3-quinoxaline-2carboxylic acid (MQCA). Herein, benefiting from the combination of functionalized magnetic nanoparticles (Fe3O4@SiO2) and MIPs, Fe3O4@SiO2@MIPs not only possessed favorable magnetic properties and stability, avoiding tedious sample pretreatment process, but also demonstrated exceptional selective recognition ability and adsorption capacity, suppressing influence of coexisting interfering substances. Encouraged by prominent merits, Fe3O4@SiO2@MIPs-based magnetic solid phase extraction with HPLC method was developed, realizing simultaneous measurement of OLA and MQCA. Under optimal conditions, excellent linear ranges of 0-100 μg/L with detection limit of 0.175-0.271 μg/L were obtained. The proposed method was finally utilized for determination of OLA and MQCA in fish muscle and milk samples with satisfactory recoveries (80.56-95.26%) and relative standard deviation below 8.1%, furnishing a reliable and sensitive strategy for enrichment and detection residual veterinary drugs in food samples.
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8
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Wang XS, Zhang S. A highly selective fluorescent sensor for chlortetracycline based on histidine-templated copper nanoclusters. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2022; 281:121588. [PMID: 35803106 DOI: 10.1016/j.saa.2022.121588] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/16/2022] [Revised: 06/28/2022] [Accepted: 06/30/2022] [Indexed: 06/15/2023]
Abstract
In this study, histidine-protected copper nanoclusters (Cu NCs@His) were established by using a one-pot method, which histidine and ascorbic acid were applied as the template and reducing agent, respectively. The as-developed Cu NCs@His endued green emission wavelength at 494 nm with the excitation of 378 nm. The Cu NCs@His exhibited green fluorescence under UV light (365 nm). Using Cu NCs@His as a pattern nanosensor, the fluorescent "turn off" mechanism was fabricated for the determination of chlortetracycline in the light of the linear decrease of fluorescence intensities around 494 nm. The chlortetracycline conducted as a quencher, leading to reveal an excellent linear relationship between ln(F0/F) of Cu NCs@His and chlortetracycline concentrations with the range of 0.5-200 μM, and the detection limit was 0.876 μM. The fluorescence quenching of Cu NCs@His revealed excellent selectivity for chlortetracycline over other potential interfering substances in the human body. This strategy was exhibited to be a convenient sensing platform for the detection of chlortetracycline in real medical samples, which could unfold a brand new and direct system for the sensing of chlortetracycline in real samples.
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Affiliation(s)
- Xian-Song Wang
- Chongqing Key Laboratory of Environmental Materials & Remediation Technologies, College of Chemistry and Environmental Engineering, Chongqing University of Arts and Sciences, Yongchuan 402160, PR China.
| | - Shen Zhang
- Department of Chemistry, Taiyuan Normal University, Jinzhong 030619, PR China.
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9
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Huang HB, Weng GQ, Liang AH, Jiang ZL. Liquid crystal 5CB-loaded nanogold as new nanocatalyst combined with aptamer to determine small organic pollutants by Cu2O resonance Rayleigh scattering probe. CHEMICAL PAPERS 2022. [DOI: 10.1007/s11696-022-02456-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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10
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Peris-Vicente J, Peris-García E, Albiol-Chiva J, Durgbanshi A, Ochoa-Aranda E, Carda-Broch S, Bose D, Esteve-Romero J. Liquid chromatography, a valuable tool in the determination of antibiotics in biological, food and environmental samples. Microchem J 2022. [DOI: 10.1016/j.microc.2022.107309] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
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11
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Chen X, Lin J, Zhuang Y, Huang S, Chen J, Han Z. Dual-mode turn-on ratiometric fluorescence sensor based on carbon dots and CuInS 2/ZnS quantum dots for detection of chlorotetracycline. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2022; 270:120851. [PMID: 35030415 DOI: 10.1016/j.saa.2021.120851] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/13/2021] [Revised: 12/29/2021] [Accepted: 12/30/2021] [Indexed: 06/14/2023]
Abstract
A new ratiometric fluorescence sensor is prepared for selective detection of chlorotetracycline (CTC) through dual-mode fluorescence method. The sensor is composed of carbon dots (CDs) with blue emission and carboxyl-modified CuInS2/ZnS quantum dots (QDs) with dark-red emission. Usually QDs are used as fluorescent probes or signal sources, but it is interesting in this strategy that CuInS2/ZnS QDs innovatively work as quenching agent to reduce the fluorescence of CDs, mainly due to the fluorescence resonance energy transfer (FRET). After the addition of CTC, the interaction between CDs and CuInS2/ZnS QDs is restrained, resulting in the fluorescence recovery of CDs, whilstthe QDs' fluorescence remains unaffected. In this work, CTC is detected in the range of 0-50 μM by conventional fluorescence and synchronous fluorescence methods under an excitation wavelength of 360 nm or Δλ = 90 nm, and the detection limits of the two methods are 0.46 μM and 0.36 μM, respectively. The designed sensor displays good selectivity compared with other tetracycline drugs with similar structure to CTC, different ions and various natural - amino acids. And the sensor can also be applied to determine CTC in tap water and milk.
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Affiliation(s)
- Xiaoping Chen
- School of Pharmacy, Fujian Medical University, Fuzhou 350122, PR China; Fujian Key Laboratory of Drug Target Discovery and Structural and Functional Research, Fuzhou 350122, PR China
| | - Jianwei Lin
- School of Pharmacy, Fujian Medical University, Fuzhou 350122, PR China; Fujian Key Laboratory of Drug Target Discovery and Structural and Functional Research, Fuzhou 350122, PR China
| | - Yafeng Zhuang
- School of Pharmacy, Fujian Medical University, Fuzhou 350122, PR China; Fujian Key Laboratory of Drug Target Discovery and Structural and Functional Research, Fuzhou 350122, PR China
| | - Siqi Huang
- School of Pharmacy, Fujian Medical University, Fuzhou 350122, PR China
| | - Jinghua Chen
- School of Pharmacy, Fujian Medical University, Fuzhou 350122, PR China; Fujian Key Laboratory of Drug Target Discovery and Structural and Functional Research, Fuzhou 350122, PR China
| | - Zhizhong Han
- School of Pharmacy, Fujian Medical University, Fuzhou 350122, PR China; Fujian Key Laboratory of Drug Target Discovery and Structural and Functional Research, Fuzhou 350122, PR China.
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12
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Facile one-pot synthesis of tannic acid-stabilized fluorescent copper nanoclusters and its application as sensing probes for chlortetracycline based on inner filter effect. Colloids Surf A Physicochem Eng Asp 2022. [DOI: 10.1016/j.colsurfa.2021.127962] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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13
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Wen W, Li Z, Wang X, Du X, Wen G, Li L. Fluorescent PEI@Pd nanoclusters: facile synthesis and application. RSC Adv 2021; 11:33202-33207. [PMID: 35497538 PMCID: PMC9042264 DOI: 10.1039/d1ra06307c] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2021] [Accepted: 09/26/2021] [Indexed: 12/20/2022] Open
Abstract
Metal nanoclusters (NCs) have recently emerged as a novel class of luminescent nanomaterials and held significant potential in analytical chemistry. In this work, novel polyethyleneimine stabilized palladium nanoclusters (PEI–Pd NCs) were synthesized by chemical reduction at 60 °C for 6 h, and used as a fluorescent nanosensor for the detection of oxytetracycline (OTC). The spectral characteristics, surface structure and morphology of the Pd NCs were studied. The selectivity and stability of the nanosensor were also investigated. The experimental results showed that the Pd NCs had good biocompatibility, stability and photobleaching resistance in aqueous solution. The fluorescence quenching effect showed a good linear relationship with the degree of fluorescence quenching of Pd NCs and OTC in the range of 25–440 nM, with a correlation coefficient of 0.99. The limit of detection (LOD) of the proposed nanosensor for OTC was calculated to be 22 nM. The mechanism of determination was thought to be an inner filter effect (IFE) between OTC and Pd NCs. Based on this, we have established a new nanosensing analysis method for detecting OTC. Metal nanoclusters (NCs) have recently emerged as a novel class of luminescent nanomaterials and held significant potential in analytical chemistry.![]()
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Affiliation(s)
- Wen Wen
- Institute of Environmental Science, School of Chemistry and Chemical Engineering, Shanxi University Taiyuan 030006 China
| | - Zhongping Li
- Institute of Environmental Science, School of Chemistry and Chemical Engineering, Shanxi University Taiyuan 030006 China
| | - Xu Wang
- Shanxi Research Center for Information and Strategy of Science and Technology Taiyuan 030024 China
| | - Xiaoyan Du
- Institute of Environmental Science, School of Chemistry and Chemical Engineering, Shanxi University Taiyuan 030006 China
| | - Guangming Wen
- Institute of Environmental Science, School of Chemistry and Chemical Engineering, Shanxi University Taiyuan 030006 China .,School of Chemistry and Chemical Engineering, Jinzhong University Jinzhong 030619 China
| | - Li Li
- First Hospital of Shanxi Medical University Taiyuan 030001 China
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14
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Li L, Zhang M, Li R, Jiang H, Liu Z. Facile synthesis of highly luminescent rod-like terbium-based metal-organic frameworks for sensitive detection of olaquindox. ANALYTICAL METHODS : ADVANCING METHODS AND APPLICATIONS 2021; 13:3785-3791. [PMID: 34350907 DOI: 10.1039/d1ay00824b] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
Olaquindox (OLA), a chemically synthesized antibacterial growth promoter, despite being strictly controlled, is illegally used in feed to improve feed conversion efficiency and increase the rate of weight gain for animals. However, it has become clear that OLA has toxic effects on human beings via the transmission of OLA through the food chain. Here, by employing terbium nitrate to provide metal ions and benzene-1,3,5-tricarboxylic acid (H3BTC) as an organic ligand, a simple, rapid, and easy scale-up synthetic method was presented for the fabrication of water-stable and highly luminescent rod-like metal-organic frameworks (Tb-BTC MOFs). Using the Tb-BTC MOFs as a luminescent probe, the luminescence quenching effect was obviously observed upon the addition of OLA, ascribed to the binding of OLA molecules on the surface of Tb-BTC and the existence of an inner-filter effect (IFE) mechanism. The correlation between the luminescence quenching ΔI and the concentration of OLA was found to be linear from 1.0 to 1000.0 μM with a detection limit of 20.6 nM. Furthermore, a Tb-BTC-loaded fiber paper was prepared and it is highly responsive (30 s) and suitable for visual OLA assay. The method described here can be successfully applied to the detection of OLA in animal feed and edible animal tissue samples.
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Affiliation(s)
- Ling Li
- Key Laboratory of Luminescent and Real-Time Analytical Chemistry (Southwest University), Ministry of Education, College of Pharmaceutical Sciences, Southwest University, Chongqing 400716, China.
| | - Miaomiao Zhang
- Key Laboratory of Luminescent and Real-Time Analytical Chemistry (Southwest University), Ministry of Education, College of Pharmaceutical Sciences, Southwest University, Chongqing 400716, China.
| | - Ran Li
- Key Laboratory of Luminescent and Real-Time Analytical Chemistry (Southwest University), Ministry of Education, College of Pharmaceutical Sciences, Southwest University, Chongqing 400716, China.
| | - Huan Jiang
- Key Laboratory of Luminescent and Real-Time Analytical Chemistry (Southwest University), Ministry of Education, College of Pharmaceutical Sciences, Southwest University, Chongqing 400716, China.
| | - Zhongde Liu
- Key Laboratory of Luminescent and Real-Time Analytical Chemistry (Southwest University), Ministry of Education, College of Pharmaceutical Sciences, Southwest University, Chongqing 400716, China.
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Farid NF, Abdelhamid NS, Naguib IA, Anwar BH, Magdy MA. Quantitative Determination of Anti-Migraine Quaternary Mixture in Presence of p-Aminophenol and 4-Chloroacetanilide. J Chromatogr Sci 2021; 60:538-544. [PMID: 34296251 DOI: 10.1093/chromsci/bmab093] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2020] [Indexed: 11/14/2022]
Abstract
A validated RP-HPLC method was developed for the estimation of paracetamol, caffeine, metoclopramide and ergotamine simultaneously in bulk and pharmaceutical formulation. The method was extended for the determination of two paracetamol genotoxic and nephrotoxic impurities and degradation products namely p-aminophenol and 4-chloroacetanilide. Separation was done on octadecyl column (15 cm × 2.1 mm, 5 μm). Gradient elution was performed using mobile phase consisting of acetonitrile and water (pH 3) in ratio of (20: 80, v/v) for the first 3 min, (50: 50, v/v) for the next 4.5 min, then (20: 80, v/v) for the final 2.5 min. The flow rate was 0.7 mL/min throughout the run which took 10 min. UV detection was done at 230 nm. The proposed method agreed with ICH guidelines of method validation. The suggested method was applied for the estimation of the proposed drugs in their dosage form. Statistical comparison was done between the results obtained from the suggested method and those obtained from reported HPLC method. The proposed method is more beneficial than the published one because of having higher sensitivity and selectivity as it allows the detection of the proposed drugs in lower concentrations in the presence of paracetamol toxic impurities, p-aminophenol and 4-chloroacetanilide.
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Affiliation(s)
- Nehal F Farid
- Pharmaceutical Analytical Chemistry Department, Faculty of Pharmacy, Beni-Suef University, Alshaheed Shehata Ahmad Hegazy St., Beni-Suef 62514, Egypt
| | - Nessreen S Abdelhamid
- Pharmaceutical Analytical Chemistry Department, Faculty of Pharmacy, Beni-Suef University, Alshaheed Shehata Ahmad Hegazy St., Beni-Suef 62514, Egypt
| | - Ibrahim A Naguib
- Department of Pharmaceutical Chemistry, College of Pharmacy, Taif University, P.O. Box 11099, Taif 21944, Saudi Arabia
| | - Basma H Anwar
- Pharmaceutical Analytical Chemistry Department, Faculty of Pharmacy, Beni-Suef University, Alshaheed Shehata Ahmad Hegazy St., Beni-Suef 62514, Egypt
| | - Maimana A Magdy
- Pharmaceutical Analytical Chemistry Department, Faculty of Pharmacy, Beni-Suef University, Alshaheed Shehata Ahmad Hegazy St., Beni-Suef 62514, Egypt
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Zhang H, Zhou Q, Han X, Li M, Yuan J, Wei R, Zhang X, Wu M, Zhao W. Nitrogen-doped carbon dots derived from hawthorn for the rapid determination of chlortetracycline in pork samples. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2021; 255:119736. [PMID: 33813150 DOI: 10.1016/j.saa.2021.119736] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/05/2021] [Revised: 02/25/2021] [Accepted: 03/18/2021] [Indexed: 06/12/2023]
Abstract
In recent years, the methods for rapidly detecting antibiotics using the unique fluorescent properties of carbon dots have attracted increasing attentions. The purpose of this study is to prepare carbon dots by hawthorn and establish a rapid fluorescence sensor for the detection of chlortetracycline in pork samples. An environmentally friendly nitrogen-doped carbon dots (N-CDs) with hawthorn powder as the carbon source and diethylenetriamine (DETA) as the nitrogen source was synthesized by one-pot hydrothermal process. The preparation conditions of the N-CDs were optimized. Subsequently, the characteristics of the N-CDs were elucidated by fluorescence, UV absorption, transmission electron microscope, fourier transform infrared spectroscopy and X-ray photoelectron spectroscopy. The N-CDs showed a quantum yield of 22.96%, emission at 447 nm at the maximum excitation wavelength of 370 nm and an average particle diameter of 3.17 nm. Meanwhile, the factors affecting the fluorescence intensity of the N-CDs were studied. Moreover, the fluorescence quenching method for detecting chlortetracycline in pork was established and optimized. Under the best experimental conditions, the linear range (R2 = 0.9992) was developed over 0.4-20 μg mL-1 with a detection limit of 0.073 ± 0.005 μg mL-1 (S/N = 3). Chlortetracycline in pork samples had been successfully detected with good recoveries of 93.62%-103.18%, which suggested that the study provided a new approach for the detection of chlortetracycline in pork.
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Affiliation(s)
- Huifang Zhang
- College of Food Science and Technology, Hebei Agricultural University, Baoding 071000, PR China
| | - Qian Zhou
- College of Food Science and Technology, Hebei Agricultural University, Baoding 071000, PR China
| | - Xue Han
- College of Food Science and Technology, Hebei Agricultural University, Baoding 071000, PR China
| | - Ming Li
- College of Science, Hebei Agricultural University, Baoding 071000, PR China
| | - Jing Yuan
- College of Food Science and Technology, Hebei Agricultural University, Baoding 071000, PR China
| | - Ran Wei
- College of Food Science and Technology, Hebei Agricultural University, Baoding 071000, PR China
| | - Xiaofu Zhang
- College of Food Science and Technology, Hebei Agricultural University, Baoding 071000, PR China
| | - Mengying Wu
- College of Food Science and Technology, Hebei Agricultural University, Baoding 071000, PR China
| | - Wen Zhao
- College of Food Science and Technology, Hebei Agricultural University, Baoding 071000, PR China.
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Oxytetracycline and Florfenicol Concentrations in Food-Additive Premixes Authorised for Broiler Chickens: Assessing Degree of Agreement with Manufacturers Labelling. Animals (Basel) 2021; 11:ani11061797. [PMID: 34208604 PMCID: PMC8234333 DOI: 10.3390/ani11061797] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2021] [Revised: 05/19/2021] [Accepted: 05/28/2021] [Indexed: 12/03/2022] Open
Abstract
Simple Summary In this study, two analytical methodologies were developed for the analysis of florfenicol and oxytetracycline premixes, which were applied in the analysis of pharmaceutical formulations manufactured at the national level. These premixes were assessed, since florfenicol and oxytetracycline are widely used in poultry farming, as they are active against several types of bacteria and their cost/effectiveness ratio is quite attractive and are administered for the therapeutic treatment of bacterial infections. However, these premixes must actually contain the active ingredients at a concentration that matches what the manufacturer states on their labels. Otherwise, they will not reach plasma concentrations that are therapeutically effective. In this work we set forth to verify via LC-MS/MS whether three commercial formulations of oxytetracycline premixes, and two of florfenicol, effectively matched their labels or not. Interestingly, this methodology detected oxytetracycline at a higher concentration than expected for those formulations, whereas the concentrations of florfenicol were lower than the on-label statement for both formulations. Abstract Antimicrobials premixes are the presentation of choice to administer drugs simultaneously to groups of animals in intensive husbandry systems that require treatment for pathologies of bacterial origin. Among the premixes available for use in poultry, florfenicol and oxytetracycline are commonly administered via food or water. However, their actual concentration in premixes must meet on-label statements to ensure plasma concentrations reach effective therapeutic levels. Hence, this work was designed for the purpose of verifying whether the concentration of antimicrobial present in five premixes matched their on-label statement. Three oxytetracycline premixes, and two of florfenicol, were analysed using a Xevo TQ-S micro UPLC-MS/MS, and an ABSciex API4000 HPLC-MS/MS, respectively. Analytical methodologies were implemented and validated, showing an R2 ≥ 0.99 for the calibration curves. Oxytetracycline was detected in these premixes at concentrations exceeding on-label statements by 13.28%, 21.54%, and 29.68%, whereas florfenicol concentrations detected in premixes were 13.06% and 14.75% lower than expected. Consequently, this work shows that the concentration of active ingredients that are present in commercial formulations effectively differ from those stated on premix labels, and it also highlights how unpredictable their range of variability might be. This must be addressed through solid and updated laws that guarantee an effective pharmaceutical product.
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Yang Y, Shi Z, Chang Y, Wang X, Yu L, Guo C, Zhang J, Bai B, Sun D, Fan S. Surface molecularly imprinted magnetic MOFs: A novel platform coupled with magneto electrode for high throughput electrochemical sensing analysis of oxytetracycline in foods. Food Chem 2021; 363:130337. [PMID: 34147891 DOI: 10.1016/j.foodchem.2021.130337] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2021] [Revised: 05/27/2021] [Accepted: 06/07/2021] [Indexed: 02/08/2023]
Abstract
In order to solve inherent problems of traditional molecularly imprinted electrochemical sensors (MIECS), a novel platform of surface molecularly imprinted magnetic metal-organic frameworks (mMOFs@MIPs) was coupled with magneto electrode to establish magnetic MIECS for the recognition of oxytetracycline (OTC). mMOFs@MIPs were synthesized using layer-by-layer modification method for the recognition of OTC. With the help of magneto electrodes, mMOFs@MIPs can be magnetically modified on the electrode surface, forming the electrochemical sensing interface. The imprinted cavities of mMOFs@MIPs can act as the electron channel of the probe to realize label-free detection of OTC. A linear response was obtained within the OTC concentration range of 1.0 × 10-9 g mL-1-1.0 × 10-4 g mL-1. The applicability of the sensor was estimated using the spiking and recovery method in milk samples with the recoveries ranging from 89.0% to 103.1%. It has potential applications in food safety analysis with high throughput detection capability, high specificity and good stability.
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Affiliation(s)
- Yukun Yang
- School of Life Science, Shanxi University, Taiyuan 030006, China.
| | - Zhuo Shi
- School of Life Science, Shanxi University, Taiyuan 030006, China
| | - Yuanyuan Chang
- School of Life Science, Shanxi University, Taiyuan 030006, China
| | - Xiaomin Wang
- Institute of Pharmaceutical and Food Engineering, Shanxi University of Chinese Medicine, Yuci 030619, China.
| | - Ligang Yu
- School of Life Science, Shanxi University, Taiyuan 030006, China
| | - Caixia Guo
- School of Life Science, Shanxi University, Taiyuan 030006, China
| | - Jinhua Zhang
- School of Life Science, Shanxi University, Taiyuan 030006, China
| | - Baoqing Bai
- School of Life Science, Shanxi University, Taiyuan 030006, China
| | - Dandan Sun
- School of Physics and Electronic Engineering, Shanxi University, Taiyuan 030006, China
| | - Sanhong Fan
- School of Life Science, Shanxi University, Taiyuan 030006, China.
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