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Chi Y, Sun W, Zhou L, Pei S, Zeng H, Cheng Y, Chai S. The preparation of hybrid silicon quantum dots by one-step synthesis for tetracycline detection and antibacterial applications. ANALYTICAL METHODS : ADVANCING METHODS AND APPLICATIONS 2023; 15:1145-1156. [PMID: 36787098 DOI: 10.1039/d2ay02102a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/18/2023]
Abstract
In this study, we prepared three different silicon quantum dots (SiQDs-1, SiQDs-2 and SiQDs-3) by hydrothermal synthesis with rose Bengal as the reducing agent and triacetoxy(methyl)silane and allyloxytrimethylsilane as silicon sources. The as-prepared SiQDs not only exhibited potent antibacterial activity against Escherichia coli (E. coli) and Staphylococcus aureus (S. aureus) but also showed specific responses to tetracycline (TC). The minimum inhibitory concentrations (MICs) of SiQDs-1, SiQDs-2 and SiQDs-3 were 0.55 mg mL-1, 0.47 mg mL-1 and 0.39 mg mL-1 against E. coli, respectively, and 0.45 mg mL-1, 0.34 mg mL-1 and 0.34 mg mL-1 against S. aureus, respectively. By examining the morphologies of bacteria and generation of reactive oxygen species (ROS), we speculated that these SiQDs shrink the bacteria and even directly destroy the bacterial structural integrity through the production of singlet oxygen. In addition, the fluorescence quenching effectiveness of SiQDs-3 also showed a strong linear relationship with TC concentration in the range of 0-1.2 μM with a detection limit of 0.318 μM, as a result of the internal filtering effect. Together, SiQDs not only can be a candidate to treat resistant bacterial infections, but also may be applied in practical detection of TC.
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Affiliation(s)
- Yuting Chi
- Chongqing Key Laboratory of Industrial Fermentation Microorganism, Chongqing University of Science and Technology, Chongqing 401331, P. R. China.
- College of Chemistry and Chemical Engineering, Chongqing University of Science and Technology, Chongqing 401331, P. R. China
| | - Wanlin Sun
- Chongqing Key Laboratory of Industrial Fermentation Microorganism, Chongqing University of Science and Technology, Chongqing 401331, P. R. China.
- College of Chemistry and Chemical Engineering, Chongqing University of Science and Technology, Chongqing 401331, P. R. China
| | - Lijia Zhou
- Chongqing Key Laboratory of Industrial Fermentation Microorganism, Chongqing University of Science and Technology, Chongqing 401331, P. R. China.
- College of Chemistry and Chemical Engineering, Chongqing University of Science and Technology, Chongqing 401331, P. R. China
| | - Shuchen Pei
- Chongqing Key Laboratory of Industrial Fermentation Microorganism, Chongqing University of Science and Technology, Chongqing 401331, P. R. China.
- College of Chemistry and Chemical Engineering, Chongqing University of Science and Technology, Chongqing 401331, P. R. China
| | - Haichun Zeng
- Chongqing Key Laboratory of Industrial Fermentation Microorganism, Chongqing University of Science and Technology, Chongqing 401331, P. R. China.
- College of Chemistry and Chemical Engineering, Chongqing University of Science and Technology, Chongqing 401331, P. R. China
| | - Yunying Cheng
- Fujian Key Laboratory on Conservation and Sustainable Utilization of Marine Biodiversity, Fuzhou Institute of Oceanography, Minjiang University, Fuzhou 350108, P. R. China.
| | - Shuiqin Chai
- Chongqing Key Laboratory of Industrial Fermentation Microorganism, Chongqing University of Science and Technology, Chongqing 401331, P. R. China.
- College of Chemistry and Chemical Engineering, Chongqing University of Science and Technology, Chongqing 401331, P. R. China
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Liu Z, Hou J, Wang X, Hou C, Ji Z, He Q, Huo D. A novel fluorescence probe for rapid and sensitive detection of tetracyclines residues based on silicon quantum dots. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2020; 240:118463. [PMID: 32521443 DOI: 10.1016/j.saa.2020.118463] [Citation(s) in RCA: 43] [Impact Index Per Article: 10.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/04/2020] [Revised: 05/06/2020] [Accepted: 05/07/2020] [Indexed: 06/11/2023]
Abstract
A novel rapid and sensitive fluorescence probe based on silicon quantum dots (Si QDs) fluorescence was fabricated for selective detection of tetracyclines (TCs) residues. Si QDs were innovatively prepared via facile One-Pot Solvent-Free Method and characterized by TEM, FT-IR, UV absorption, fluorescence, XPS and XRD. In aqueous solution, Cu2+ and Si QDs complexed together and the fluorescence of Si QDs quenched (static quenching) to a certain extent. TCs can be early in binding to Cu2+ and prevent Si QDs fluorescence quenching. As a consequence, quantitative screening of TCs can be achieved. The assay is highly selective for TCs. Represented by chlortetracycline (CTC), a member of TCs, under optimized conditions, good linear relationship in the range of 11.32-1086.72 nM was obtained, and the detection limit (LOD; S/N ratio = 3) of this assay for CTC is 0.92 nM. It was successfully applied to the determination of CTC in spiked bee honey and total TCs in actual honey samples. And the evaluation of selectivity, reproducibility and stability of the probe were favorable. These results demonstrated that the presented fluorescent probe can be a promising sensing platform for TCs analysis.
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Affiliation(s)
- Zhenping Liu
- Key Laboratory for Biorheological Science and Technology of Ministry of Education, State and Local Joint Engineering Laboratory for Vascular Implants, Bioengineering College of Chongqing University, Chongqing 400044, PR China; Chongqing Vocational Institute of Safety & Technology, Chongqing 404000, PR China
| | - Jingzhou Hou
- Key Laboratory of Eco-Environment of Three Gorges Region of Ministry of Education, Faculty of Urban Construction and Environmental Engineering, Chongqing University, Chongqing 400045, PR China
| | - Xianfeng Wang
- Key Laboratory for Biorheological Science and Technology of Ministry of Education, State and Local Joint Engineering Laboratory for Vascular Implants, Bioengineering College of Chongqing University, Chongqing 400044, PR China
| | - Changjun Hou
- Key Laboratory for Biorheological Science and Technology of Ministry of Education, State and Local Joint Engineering Laboratory for Vascular Implants, Bioengineering College of Chongqing University, Chongqing 400044, PR China
| | - Zhong Ji
- Key Laboratory for Biorheological Science and Technology of Ministry of Education, State and Local Joint Engineering Laboratory for Vascular Implants, Bioengineering College of Chongqing University, Chongqing 400044, PR China
| | - Qiang He
- Key Laboratory of Eco-Environment of Three Gorges Region of Ministry of Education, Faculty of Urban Construction and Environmental Engineering, Chongqing University, Chongqing 400045, PR China.
| | - Danqun Huo
- Key Laboratory for Biorheological Science and Technology of Ministry of Education, State and Local Joint Engineering Laboratory for Vascular Implants, Bioengineering College of Chongqing University, Chongqing 400044, PR China; Chongqing Key Laboratory of Bio-perception & Intelligent Information Processing, School of Microelectronics and Communication Engineering, Chongqing University, Chongqing 400044, PR China.
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Liu Z, Hou J, He Q, Luo X, Huo D, Hou C. New application of Mn-doped ZnS quantum dots: phosphorescent sensor for the rapid screening of chloramphenicol and tetracycline residues. ANALYTICAL METHODS : ADVANCING METHODS AND APPLICATIONS 2020; 12:3513-3522. [PMID: 32672268 DOI: 10.1039/d0ay00961j] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
In this work, a new application of Mn-doped ZnS quantum dots (Mn-ZnS QDs) was developed to screen chloramphenicol (CAP) and tetracycline (TC) residues simply and rapidly. Mn-ZnS QDs synthesized by a hydration method and modified by l-cysteine for better stability emit phosphorescence at 583 nm with the excitation wavelength at 289 nm. Based on the overlap of the Mn-ZnS QDs excitation spectra and CAP or TCs ultraviolet spectra, the excited light of the Mn-ZnS QDs was partially absorbed by CAP or TCs owing to the inner-filter effect (IFE), leading to a decrease in the phosphorescence intensity. The phosphorescence intensities of the samples prepared by mixing different TCs and CAP were in good agreement with the expected results from adding a single antibiotic sample. Therefore, the total molar concentrations of CAP and TCs could be screened based on the linear equation of a single standard substance. Represented by tetracycline (TC), as a member of the tetracycline family, under optimized conditions, showed a good linear relational concentration range over 4 orders of magnitude from 50 to 1.5 × 105 nM with a limit of detection (LOD; S/N ratio = 3) down to 8.6 nM. The phosphorescent sensor was also used to detect total TCs in actual samples successfully. The evaluations of the recovery rate and selectivity were good. These results demonstrated that the presented phosphorescent sensor can be a simple and rapid screening platform for CAP and TCs.
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Affiliation(s)
- Zhenping Liu
- Chongqing Vocational Institute of Safety & Technology, Chongqing 404000, P. R. China and Key Laboratory for Biorheological Science and Technology of Ministry of Education, State and Local Joint Engineering Laboratory for Vascular Implants, Bioengineering College of Chongqing University, Chongqing 400044, P. R. China.
| | - Jingzhou Hou
- Key Laboratory of Eco-environment of Three Gorges Region of Ministry of Education, College of Environment and Ecology, Chongqing University, Chongqing 400045, P. R. China
| | - Qiang He
- Key Laboratory of Eco-environment of Three Gorges Region of Ministry of Education, College of Environment and Ecology, Chongqing University, Chongqing 400045, P. R. China
| | - Xiaogang Luo
- Key Laboratory for Biorheological Science and Technology of Ministry of Education, State and Local Joint Engineering Laboratory for Vascular Implants, Bioengineering College of Chongqing University, Chongqing 400044, P. R. China.
| | - Danqun Huo
- Key Laboratory for Biorheological Science and Technology of Ministry of Education, State and Local Joint Engineering Laboratory for Vascular Implants, Bioengineering College of Chongqing University, Chongqing 400044, P. R. China. and Chongqing Key Laboratory of Bio-perception & Intelligent Information Processing, School of Microelectronics and Communication Engineering, Chongqing University, Chongqing, 400044, P. R. China
| | - Changjun Hou
- Key Laboratory for Biorheological Science and Technology of Ministry of Education, State and Local Joint Engineering Laboratory for Vascular Implants, Bioengineering College of Chongqing University, Chongqing 400044, P. R. China.
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Pérez-Rodríguez M, Pellerano RG, Pezza L, Pezza HR. An overview of the main foodstuff sample preparation technologies for tetracycline residue determination. Talanta 2018; 182:1-21. [DOI: 10.1016/j.talanta.2018.01.058] [Citation(s) in RCA: 57] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2017] [Revised: 01/19/2018] [Accepted: 01/20/2018] [Indexed: 12/26/2022]
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Rapid Screening of Oxytetracycline Residue in Fish Muscle by Dispersive Liquid-Liquid Microextraction and Europium-Sensitized Luminescence. FOOD ANAL METHOD 2015. [DOI: 10.1007/s12161-014-0076-4] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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6
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Lv YK, Zhang JQ, Guo ZY, Zhang W, Sun HW. Determination of Tetracyclines Residues in Egg, Milk, and Milk Powder by Online Coupling of A Precolumn Packed with Molecular Imprinted Hybrid Composite Materials to RP-HPLC-UV. J LIQ CHROMATOGR R T 2014. [DOI: 10.1080/10826076.2013.873873] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Affiliation(s)
- Yun-Kai Lv
- a College of Chemistry and Environmental Science, Hebei University, Key Laboratory of Analytical Science and Technology of Hebei Province , Baoding , China
| | - Jing-Qi Zhang
- a College of Chemistry and Environmental Science, Hebei University, Key Laboratory of Analytical Science and Technology of Hebei Province , Baoding , China
| | - Zhi-Yong Guo
- a College of Chemistry and Environmental Science, Hebei University, Key Laboratory of Analytical Science and Technology of Hebei Province , Baoding , China
| | - Wei Zhang
- a College of Chemistry and Environmental Science, Hebei University, Key Laboratory of Analytical Science and Technology of Hebei Province , Baoding , China
| | - Han-Wen Sun
- a College of Chemistry and Environmental Science, Hebei University, Key Laboratory of Analytical Science and Technology of Hebei Province , Baoding , China
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Wongtangprasert T, Natakuathung W, Pimpitak U, Buakeaw A, Palaga T, Komolpis K, Khongchareonporn N. Production of a monoclonal antibody against oxytetracycline and its application for oxytetracycline residue detection in shrimp. J Zhejiang Univ Sci B 2014; 15:165-72. [PMID: 24510709 PMCID: PMC3924392 DOI: 10.1631/jzus.b1300181] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2013] [Accepted: 10/25/2013] [Indexed: 11/11/2022]
Abstract
A novel monoclonal antibody (MAb) against oxytetracycline (OTC) was generated and characterized. The MAb was used in the development of an enzyme-linked immunosorbant assay (ELISA)-based detection system. An OTC-bovine serum albumin (BSA) conjugate was prepared and used in the immunization of mice. A conventional somatic cell fusion technique was used to generate MAb-secreting hybridomas denoted 2-4F, 7-3G, and 11-11A. An indirect competitive ELISA (icELISA) was applied to measure the sensitivity and specificity of each MAb in terms of its 50% inhibitory concentration (IC50) and percentage of cross-reactivity, respectively. MAb 2-4F exhibited the highest sensitivity, with an IC50 of 7.01 ng/ml. This MAb showed strong cross-reactivity to rolitetracycline, but no cross-reactivity to other unrelated antibiotics. When MAb 2-4F was used to detect OTC from shrimp samples, the recoveries were in the range of 82%-118% for an intra-assay and 96%-113% for an inter-assay. The coefficients of variation of the assays were 3.9%-13.9% and 5.5%-14.9%, respectively.
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Affiliation(s)
| | - Wirongrong Natakuathung
- Program in Biotechnology, Faculty of Science, Chulalongkorn University, Bangkok 10330, Thailand
| | - Umaporn Pimpitak
- Institute of Biotechnology and Genetic Engineering, Chulalongkorn University, Bangkok 10330, Thailand
| | - Anumart Buakeaw
- Institute of Biotechnology and Genetic Engineering, Chulalongkorn University, Bangkok 10330, Thailand
| | - Tanapat Palaga
- Department of Microbiology, Faculty of Science, Chulalongkorn University, Bangkok 10330, Thailand
| | - Kittinan Komolpis
- Institute of Biotechnology and Genetic Engineering, Chulalongkorn University, Bangkok 10330, Thailand
| | - Nanthika Khongchareonporn
- Institute of Biotechnology and Genetic Engineering, Chulalongkorn University, Bangkok 10330, Thailand
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High-performance liquid chromatography using pressurized liquid extraction for the determination of seven tetracyclines in egg, fish and shrimp. J Chromatogr B Analyt Technol Biomed Life Sci 2013; 917-918:11-7. [DOI: 10.1016/j.jchromb.2012.12.036] [Citation(s) in RCA: 58] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2012] [Revised: 12/20/2012] [Accepted: 12/21/2012] [Indexed: 11/19/2022]
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9
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Lv YK, Wang LM, Yang L, Zhao CX, Sun HW. Synthesis and application of molecularly imprinted poly(methacrylic acid)–silica hybrid composite material for selective solid-phase extraction and high-performance liquid chromatography determination of oxytetracycline residues in milk. J Chromatogr A 2012; 1227:48-53. [DOI: 10.1016/j.chroma.2011.12.108] [Citation(s) in RCA: 103] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2011] [Revised: 12/23/2011] [Accepted: 12/29/2011] [Indexed: 11/29/2022]
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10
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Chen G, Liu G. Determination of oxytetracycline residue in shrimp using a portable time-resolved analyzer and HPLC–MS/MS validation. ACTA ACUST UNITED AC 2012. [DOI: 10.1007/s11694-012-9123-2] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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11
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Botsoglou N, Fletouris D. Residual Antibacterials in Food. FOOD SCIENCE AND TECHNOLOGY 2011. [DOI: 10.1201/b11081-27] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 03/07/2023]
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12
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Chen G, Liu G, Qin F. Use of a portable time-resolved fluorometer to determine oxytetracycline residue in four fruit crops. Food Chem 2011. [DOI: 10.1016/j.foodchem.2010.12.106] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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13
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Spectrofluorimetric Assessment of Doxycycline Hydrochloride in Pharmaceutical Tablets and Serum Sample Based on the Enhancement of the Luminescence Intensity of the Optical Sensor Sm3+ Ion. J Fluoresc 2011; 21:1739-48. [DOI: 10.1007/s10895-011-0869-4] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2010] [Accepted: 02/17/2011] [Indexed: 10/18/2022]
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14
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Chen G, Liu G. Analysis of oxytetracycline residue in salmon muscle using a portable analyzer based on EuIIIluminescence. Food Addit Contam Part A Chem Anal Control Expo Risk Assess 2009. [DOI: 10.1080/02652030903013302] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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15
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A confirmatory method for the determination of tetracyclines in muscle using high-performance liquid chromatography with diode-array detection. Anal Chim Acta 2009; 637:40-6. [DOI: 10.1016/j.aca.2008.10.029] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2008] [Revised: 10/09/2008] [Accepted: 10/10/2008] [Indexed: 11/22/2022]
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16
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Samanidou V, Nisyriou S. Multi‐residue methods for confirmatory determination of antibiotics in milk. J Sep Sci 2008; 31:2068-90. [DOI: 10.1002/jssc.200700647] [Citation(s) in RCA: 69] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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17
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Samanidou VF, Nikolaidou KI, Papadoyannis IN. Development and validation of an HPLC confirmatory method for the determination of seven tetracycline antibiotics residues in milk according to the European Union Decision 2002/657/EC. J Sep Sci 2007; 30:2430-9. [PMID: 17628871 DOI: 10.1002/jssc.200700057] [Citation(s) in RCA: 31] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
An HPLC method with diode-array detection, at 355 nm, was developed and validated for the determination of seven tetracyclines (TCs) in milk: minocycline (MNC), TC, oxytetracycline (OTC), methacycline (MTC), demeclocycline (DMC), chlortetracycline (CTC), and doxycycline (DC). Oxalate buffer (pH 4) was used with 20% TCA as a deproteinization agent for the extraction of analytes from milk followed by SPE. The separation was achieved on an Inertsil ODS-3, 5 microm, 250 x 4 mm(2 )analytical column at ambient temperature. The mobile phase, a mixture of A: 0.01 M oxalic acid and B: CH(3)CN, was delivered using a gradient program. The procedure was validated according to the European Union decision 2002/657/EC determining selectivity, stability, decision limit, detection capability, accuracy, and precision. Mean recoveries of TCs from spiked milk samples (50, 100, and 200 ng/g) were 93.8-100.9% for MNC, 96.8-103.7% for OTC, 96.3-101.8% for TC, 99.4-107.2% for DMC, 99.4-102.9% for CTC, 96.3-102.7% for MTC, and 94.6-102.1% for DC. All RSD values were lower than 8.5%. The decision limits CC(a) calculated by spiking 20 blank milk samples at MRL (100 microg/kg) ranged from 101.25 to 105.84 microg/kg, while detection capability CC(b )from 103.94 to 108.88 microg/kg.
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Affiliation(s)
- Victoria F Samanidou
- Laboratory of Analytical Chemistry, Department of Chemistry, Aristotle University of Thessaloniki, Thessaloniki, Greece
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Liu Y, Xu JZ, Ding T, Li GH. Determination of Tetracyclines in Honey Using Liquid Chromatography with Ultraviolet Absorbance Detection and Residue Confirmation by Mass Spectrometry. CHINESE J CHEM 2007. [DOI: 10.1002/cjoc.200790240] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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Pena A, Lino CM, Alonso R, Barceló D. Determination of tetracycline antibiotic residues in edible swine tissues by liquid chromatography with spectrofluorometric detection and confirmation by mass spectrometry. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2007; 55:4973-9. [PMID: 17550268 DOI: 10.1021/jf070398j] [Citation(s) in RCA: 41] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/15/2023]
Abstract
A sensitive and specific method is described for the simultaneous determination of oxytetracycline, tetracycline (TC), and chlortetracycline residues in edible swine tissues, by combining liquid chromatography with spectrofluorometric and mass spectrometry detection. The procedure involved a preliminary extraction with EDTA-McIlvaine buffer acidified at pH 4.0, followed by solid-phase extraction cleanup using a polymeric sorbent. The liquid chromatography analysis was performed with spectrofluorometric detection after postcolumn derivatization with magnesium ions. The limits of quantification were 50 microg/kg for muscle and 100 microg/kg for kidney tissues. The recovery values were greater than 77.8% for muscle and 65.1% for kidney. The method has been successfully used for the quantification of tetracyclines in swine tissues samples. The selective liquid chromatography mass spectrometric analysis for confirmation of oxytetracycline in one positive swine muscle sample was made by atmospheric pressure chemical ionization (APCI). The APCI mass spectra of the TCs gave the protonated molecular ion and two typical fragment ions, required for their confirmation in single ion monitoring scan mode in animal tissues.
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Affiliation(s)
- Angelina Pena
- Group of Bromatology, Center of Pharmaceutical Studies, University of Coimbra, Coimbra, Portugal.
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Traviesa-Alvarez JM, Costa-Fernández JM, Pereiro R, Sanz-Medel A. Direct screening of tetracyclines in water and bovine milk using room temperature phosphorescence detection. Anal Chim Acta 2007; 589:51-8. [PMID: 17397652 DOI: 10.1016/j.aca.2007.02.063] [Citation(s) in RCA: 45] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2006] [Revised: 02/12/2007] [Accepted: 02/15/2007] [Indexed: 11/21/2022]
Abstract
A fast and simple flow-through optosensor was designed and characterized for the direct screening of four tetracycline (TCC) antibiotics (tetracycline, oxytetracycline, chlortetracycline and doxycycline) in water and bovine milk samples. The proposed optosensor provides rapid binary yes/no overall responses, being appropriate for the screening of this family of antibiotics above or below a pre-set concentration threshold. The experimental set-up is based on a flow-injection manifold coupled on-line to a phosphorescence detector. Aliquots of the samples are pretreated with Eu(III) to form room temperature phosphorescent metal chelates and injected in the flow manifold. Those chelates are then on-line retained on a conventional flow-cell (packed with polymeric Amberlite XAD-4 particles) which is placed inside the cell holder of the phosphorimeter. After the emission is registered, the antibiotic-metal complexes are eluted from the packed resin with 1M HCl (for milk samples a second regeneration step, using methanol, should be performed). A sample throughput of about 20 samples per hour was obtained. Optimum experimental conditions include a pH 9, a Eu(III) concentration of 2 x 10(-4) M and 8 mM sodium sulphite as chemical deoxygenant. The phosphorescence emitted by the europium-TCC complexes was measured at 394 and 617 nm for excitation and emission wavelengths, respectively. The unreliability region, given by the probability of false positives and false negatives, respectively (set at 5% in both cases) was in the range between 0.2 and 11.6 nM for detection of tetracyclines in water samples (at a cut-off level of 4 nM) and in the range between 165 and 238 nM for detection of tetracyclines in milk (cut-off level fixed at the normative EU level of 200 nM). Finally, the applicability of the proposed screening optosensor was tested for the reliable control of tetracyclines in contaminated and uncontaminated water and milk samples.
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Affiliation(s)
- J M Traviesa-Alvarez
- Department of Physical and Analytical Chemistry, Faculty of Chemistry, University of Oviedo, Oviedo, Spain
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Spisso BF, de Oliveira e Jesus AL, de Araújo Júnior MAG, Monteiro MA. Validation of a high-performance liquid chromatographic method with fluorescence detection for the simultaneous determination of tetracyclines residues in bovine milk. Anal Chim Acta 2007; 581:108-17. [DOI: 10.1016/j.aca.2006.08.004] [Citation(s) in RCA: 45] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2006] [Revised: 08/02/2006] [Accepted: 08/02/2006] [Indexed: 11/26/2022]
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Li H, Kijak PJ, Turnipseed SB, Cui W. Analysis of veterinary drug residues in shrimp: A multi-class method by liquid chromatography–quadrupole ion trap mass spectrometry. J Chromatogr B Analyt Technol Biomed Life Sci 2006; 836:22-38. [PMID: 16597519 DOI: 10.1016/j.jchromb.2006.03.025] [Citation(s) in RCA: 69] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2005] [Revised: 02/24/2006] [Accepted: 03/11/2006] [Indexed: 11/21/2022]
Abstract
A liquid chromatography-mass spectrometry (LC-MS) method was developed to screen and confirm veterinary drug residues in raw shrimp meat. This method simultaneously monitors 18 drugs of different classes, including oxytetracycline (OTC), sulfonamides, quinolones, cationic dyes, and toltrazuril sulfone (TOLS). The homogenized shrimp meat is extracted with 5% trichloroacetic acid. The extract is further cleaned using polymer-based SPE. A 50 mm phenyl column separates the analytes, prior to analysis with an ion trap mass spectrometer interfaced with an atmospheric pressure chemical ionization source. This method is able to confirm oxytetracycline residues at 200 ng/g, toltrazuril sulfone at 50 ng/g, sulfaquinoxaline at 20 ng/g, and the other 15 drugs at 10 ng/g or lower levels. An estimate of the level of residues can also be made so that only confirmed samples above action levels will be sent for quantitation. The method is validated with both fortified and incurred samples, using multiple shrimp species as well. This multi-class method can provide a means to simultaneously monitor for a wide range of illegal drug residues in shrimp.
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Affiliation(s)
- Hui Li
- U.S. Food and Drug Administration, Center for Veterinary Medicine, Office of Research, Laurel, MD 20708, USA
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24
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Kallel L, Ben Attia M, Bouzouita K, Aissa P, Trabelsi H. Optimization of the separation conditions of tetracyclines on a preselected reversed-phase column with embedded urea group. J Sep Sci 2006; 29:929-35. [PMID: 16833224 DOI: 10.1002/jssc.200500344] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
The use of a C12 stationary phase with embedded polar group has been investigated for the separation of seven tetracyclines. The influence of pH, organic modifier, buffer, and temperature on the peak shape and analyte separation was discussed. It appears that all the chromatographic conditions had a great effect on both the resolution and peak shape whereas the elution order was not affected. The baseline separation with symmetrical peaks of the seven tetracyclines can be obtained with a mobile phase containing either 5 mM phosphate buffer pH 2.5/ACN (84:16 v/v) or 5 mM perchlorate buffer pH 2.5/ACN (75:25 v/v) at a temperature not exceeding 20 degrees C. This study reveals that the retention mechanism is ion-pairing.
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Affiliation(s)
- Leila Kallel
- Laboratoire National de Contrôle des Médicaments 11 bis, Bab Saadoun, Tunis, Tunisia
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25
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Himmelsbach M, Buchberger W. Residue Analysis of Oxytetracycline in Water and Sediment Samples by High-Performance Liquid Chromatography and Immunochemical Techniques. Mikrochim Acta 2005. [DOI: 10.1007/s00604-005-0372-1] [Citation(s) in RCA: 30] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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26
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Anderson CR, Rupp HS, Wu WH. Complexities in tetracycline analysis—chemistry, matrix extraction, cleanup, and liquid chromatography. J Chromatogr A 2005; 1075:23-32. [PMID: 15974114 DOI: 10.1016/j.chroma.2005.04.013] [Citation(s) in RCA: 165] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
The extraction and cleanup of commonly used tetracyclines (oxytetracycline, tetracycline, chlortetracycline, and doxycycline) from sample matrix, and their subsequent determination via liquid chromatography can be problematic. Many manuscripts report on various challenges encountered when developing a method for tetracycline antibiotics determination. These complexities often result in less than perfect recoveries or chromatograms and are based on the underlying chemistry associated with tetracyclines. This review compiles, compares, and discusses the results and observations found in published methods, while focusing on chemical principles in order to increase the practicing chemist's understanding of TCs to aid him/her in developing useful analyses.
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Affiliation(s)
- Collin R Anderson
- U.S. Food and Drug Administration, Seafood Products Research Center/Pacific Regional Laboratory Northwest, 22201 23rd Drive SE, Bothell, WA 98021, USA.
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27
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Fluorimetric determination of tetracyclines with the europium chelate of 1,10-phenanthroline in micellar solutions of anionic surfactants. JOURNAL OF ANALYTICAL CHEMISTRY 2005. [DOI: 10.1007/s10809-005-0039-4] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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28
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Treetepvijit S, Chuanuwatanakul S, Einaga Y, Sato R, Chailapakult O. Electroanalysis of Tetracycline Using Nickel-implanted Boron-doped Diamond Thin Film Electrode Applied to Flow Injection System. ANAL SCI 2005; 21:531-5. [PMID: 15913142 DOI: 10.2116/analsci.21.531] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
The electrochemical analysis of tetracycline was investigated using nickel-implanted boron-doped diamond thin film electrode by cyclic voltammetry and amperometry with a flow injection system. Cyclic voltammetry was used to study the electrochemical oxidation of tetracycline. Comparison experiments were carried out using as-deposited boron-doped diamond thin film electrode (BDD). Nickel-implanted boron-doped diamond thin film electrode (Ni-DIA) provided well-resolved oxidation irreversible cyclic voltammograms. The current signals were higher than those obtained using the as-deposited BDD electrode. Results using nickel-implanted boron-doped diamond thin film electrode in flow injection system coupled with amperometric detection are presented. The optimum potential for tetracycline was 1.55 V versus Ag/AgCl. The linear range of 1.0 to 100 microM and the detection limit of 10 nM were obtained. In addition, the application for drug formulation was also investigated.
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Affiliation(s)
- Surudee Treetepvijit
- Department of Chemistry, Faculty of Science, Chulalongkorn University, Patumwan, Bangkok 10330, Thailand
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29
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Charoenraks T, Chuanuwatanakul S, Honda K, Yamaguchi Y, Chailapakul O. Analysis of Tetracycline Antibiotics Using HPLC with Pulsed Amperometric Detection. ANAL SCI 2005; 21:241-5. [PMID: 15790106 DOI: 10.2116/analsci.21.241] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
The analysis of tetracycline, oxytetracyline, chlortetracycline and doxycycline by high-performance liquid chromatography with pulsed amperometric detection using an anodized boron-doped diamond thin film (BDD) electrode is originally reported. The analyses were carried out using the mobile phase, phosphate buffer (0.01 M, pH 2.5)-acetonitrile (80:20; v/v), on a C18 column (250 x 4.6 mm i.d., 5 microm) at a flow rate of 1.0 mL/min. The optimal PAD waveform parameters at the anodized BDD were 1.5 V (versus Ag/AgCl) detection potential (E(det)) for 290 ms (200 ms delay time and 90 ms integration time), 2.0 V (versus Ag/AgCl) oxidation potential (E(oxd)) for 200 ms oxidation time (t(oxd)) and 0.4 V (versus Ag/AgCI) reduction potential (E(red)) for 200 ms reduction time (t(red)). The proposed method showed the simultaneous determination of tetracycline, oxytetracyline, chlortetracycline and doxycycline with a linear range of 0.1 - 100 microg/mL, detection limits of 0.05 - 0.1 microg/mL and recoveries of 70.8 - 96.0%. The application of this method to real samples was demonstrated and validated using a shrimp sample.
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Affiliation(s)
- Thiraporn Charoenraks
- Department of Chemistry, Faculty of Science, Chulalongkorn University, Patumwan, Bangkok 10330, Thailand
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30
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Andersen WC, Roybal JE, Gonzales SA, Turnipseed SB, Pfenning AP, Kuck LR. Determination of tetracycline residues in shrimp and whole milk using liquid chromatography with ultraviolet detection and residue confirmation by mass spectrometry. Anal Chim Acta 2005. [DOI: 10.1016/j.aca.2004.08.012] [Citation(s) in RCA: 83] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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31
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Chen G, Liu L. Hyphenation of sorbent extraction and solid-matrix time-resolved luminescence using tetracycline in milk as a model analyte. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2004; 52:7199-7205. [PMID: 15563195 DOI: 10.1021/jf049023d] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Abstract
Hyphenation of sorbent extraction and solid-matrix time-resolved luminescence (TRL) was demonstrated using tetracycline (TC) in milk as a model analyte. The performance of a C18-impregnated silica layer was evaluated as both an extraction sorbent and a TRL substrate. To extract TC, a 10 x 6 mm glass-backed C18 layer was dipped into a 10 mL milk sample for 10 min followed by a 3-min water immersion for cleanup. The sorbent was then spotted with a TRL reagent solution at pH 9 that contained 5 mM europium nitrate and 5 mM EDTA. After a brief desiccation period, TRL was measured directly on the sorbent surface with a commercial fluorescence spectrophotometer. By eliminating the need to elute the analyte from the sorbent, organic solvent was not needed and sample preparation was greatly simplified. The integrated signal showed a linear dependence (R(2) = 0.9938) on TC concentration in the 0-3000 microg/L range. The same protocol was applicable to screening TC in fat-free, 2% low-fat, and whole milk at 300 microg/L, the US. regulatory tolerance level set by the Food and Drug Administration (FDA). This easy, fast, and low-cost screening method is friendly to the environment and particularly suitable for liquid samples.
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Affiliation(s)
- Guoying Chen
- Microbial Biophysics and Residue Chemistry and Core Technologies (MBRCCT), Eastern Regional Research Center, Agricultural Research Service, U.S. Department of Agriculture, 600 East Mermaid Lane, Wyndmoor, PA 19038, USA.
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32
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Loetanantawong B, Suracheep C, Somasundrum M, Surareungchai W. Electrocatalytic Tetracycline Oxidation at a Mixed-Valent Ruthenium Oxide−Ruthenium Cyanide-Modified Glassy Carbon Electrode and Determination of Tetracyclines by Liquid Chromatography with Electrochemical Detection. Anal Chem 2004; 76:2266-72. [PMID: 15080737 DOI: 10.1021/ac035085b] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Mixed-valent films of ruthenium oxide-ruthenium cyanide were electrodeposited onto glassy carbon and characterized for the electrocatalytic oxidation of tetracycline. The currents produced by tetracycline were higher than from previously reported electrode modifications or pretreatments. In H(2)SO(4) pH 1.0 + 0.5 M K(2)SO(4), the second-order rate constant for the reaction between tetracycline and the Ru(III/IV) couple of ruthenium oxide was 3 x 10(5) +/- 1 x 10(5) mol(-1) cm(3) s(-1), and the rate of charge diffusion through the films was 4.5 x 10(-7) +/- 3.5 x 10(-7) cm(2) s(-1). Reaction was localized at the film-solution interface. When used as detectors in liquid chromatography (in H(3)PO(4) pH 2.5 + 0.1 M KH(2)PO(4) + 20% CH(3)CN, E = 1.10 V vs SCE), the electrodes gave limits of detection (>3 S/N) of 0.1 ppm for tetracycline and oxytetracycline and 0.5 ppm for doxycycline and chlorotetracycline. These limits were suitable for FDA and Codex Alimentarius guidelines for tetracyclines in food. Recoveries of the four tetracyclines from sea and freshwater shrimp were in the range 73-111%, which was higher or similar to the previously reported recoveries from shrimp.
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Affiliation(s)
- Benchaporn Loetanantawong
- School of Bioresources and Technology, King Mongkut's University of Technology Thonburi, Bangkhuntien-Chaitalay Road, Thakam, Bangkok 10150, Thailand
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33
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Skúlason S, Ingólfsson E, Kristmundsdóttir T. Development of a simple HPLC method for separation of doxycycline and its degradation products. J Pharm Biomed Anal 2003; 33:667-72. [PMID: 14623592 DOI: 10.1016/s0731-7085(03)00316-9] [Citation(s) in RCA: 30] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
A simple HPLC method for the separation of doxycycline and its degradation products 6-epidoxycycline and metacycline was developed. Numerous HPLC conditions were tested for the qualitative determination of doxycycline and its degradation products. The best result was achieved by using Phenomenex Luna 5 microm C(8) 250 x 4.6 mm column with a Phenomenex(R) C(8) 4 x 10 mm I.D. guard column, and a mobile phase consisting of acetonitrile:water:perchloric acid (HClO(4)) (26:74:0.25) adjusted to pH 2.5 with 5 M sodium hydroxide, a flow-rate of 1.0 ml/min and ultraviolet detection at 350 nm. Correlation coefficients for calibration curves within the detection range of 3-60 microl/ml were 0.9990 for doxycycline and 1.000 and 0.9994 for 6-epidoxycycline and metacycline, respectively (within the range 0.5-7 microl/ml). The resolution between metacycline and 6-epidoxycycline was 1.2 and between 6-epidoxycycline and doxycycline it was 1.9 which fulfils European Pharmacopoeia requirements. The within- and between-day precision was determined for both retention time and peak area. Preliminary results indicate that this method can also be applied for separating other tetracyclines such as minocycline, chlortetracycline, tetracycline and demeclocycline.
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Affiliation(s)
- S Skúlason
- Faculty of Pharmacy, University of Iceland, Hagi, Hofsvallagotu 53, IS-107 Reykjavík, Iceland.
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34
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Clean and rapid liquid chromatographic technique for monitoring of oxytetracycline and sulphadimidine in milk without use of organic solvents. Chromatographia 2003. [DOI: 10.1007/bf02492402] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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35
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Di Corcia A, Nazzari M. Liquid chromatographic-mass spectrometric methods for analyzing antibiotic and antibacterial agents in animal food products. J Chromatogr A 2002; 974:53-89. [PMID: 12458928 DOI: 10.1016/s0021-9673(02)00905-6] [Citation(s) in RCA: 127] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
Public health agencies in many countries rely on detection by mass spectrometry for unambiguous identification of residues of antibiotic and antibacterial agents in animal food products for human consumption. The introduction of relatively inexpensive and robust LC-MS systems has given a strong impulse to develop determinative and confirmatory methods for the above medicines in foodstuffs. This impulse has been also dictated by thermal instability and lack of volatility of many antibiotics and antibacterials that makes the GC-MS technique of difficult application. Analytical methods developed for analyzing components of the major classes of the medicines mentioned above are here reviewed. The discussion is focused on both sample treatment and final LC-MS analysis.
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Affiliation(s)
- Antonio Di Corcia
- Dipartimento di Chimica, Università La Sapienza, Piazza Aldo Moro 5, 00185 Rome, Italy.
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36
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Choma I, Choma A, Staszczuk K. Direct bioautography-thin-layer chromatography of flumequine and doxycycline in milk. JPC-J PLANAR CHROMAT 2002. [DOI: 10.1556/jpc.15.2002.3.5] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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37
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Kamel AM, Fouda HG, Brown PR, Munson B. Mass spectral characterization of tetracyclines by electrospray ionization, H/D exchange, and multiple stage mass spectrometry. JOURNAL OF THE AMERICAN SOCIETY FOR MASS SPECTROMETRY 2002; 13:543-557. [PMID: 12019978 DOI: 10.1016/s1044-0305(02)00356-2] [Citation(s) in RCA: 41] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
Abstract
Electrospray ionization (ESI) and collisionally induced dissociation (CID) mass spectra were obtained for five tetracyclines and the corresponding compounds in which the labile hydrogens were replaced by deuterium by either gas phase or liquid phase exchange. The number of labile hydrogens, x, could easily be determined from a comparison of ESI spectra obtained with N2 and with ND3 as the nebulizer gas. CID mass spectra were obtained for [M + H]+ and [M - H]- ions and the exchanged analogs, [M(Dx) + D]+ and [M(Dx) - D]- , and produced by ESI using a Sciex API-III(plus) and a Finnigan LCQ ion trap mass spectrometer. Compositions of product ions and mechanisms of decomposition were determined by comparison of the MS(N) spectra of the un-deuterated and deuterated species. Protonated tetracyclines dissociate initially by loss of H2O (D2O) and NH3 (ND3) if there is a tertiary OH at C-6. The loss of H2O (D2O) is the lower energy process. Tetracyclines without the tertiary OH at C-6 lose only NH3 (ND3) initially. MSN experiments showed easily understandable losses of HDO, HN(CH3)2, CH3 - N=CH2, and CO from fragment ions. The major fragment ions do not come from cleavage reactions of the species protonated at the most basic site. Deprotonated tetracyclines had similar CID spectra, with less fragmentation than those observed for the protonated tetracyclines. The lowest energy decomposition paths for the deprotonated tetracyclines are the competitive loss of NH3 (ND3) or HNCO (DNCO). Product ions appear to be formed by charge remote decompositions of species de-protonated at the C-10 phenol.
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Affiliation(s)
- Amin M Kamel
- Department of Drug Metabolism, Pfizer Global Research and Development, Groton Laboratories, Connecticut 06340, USA.
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38
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Lindsey ME, Meyer TM, Thurman EM. Analysis of trace levels of sulfonamide and tetracycline antimicrobials in groundwater and surface water using solid-phase extraction and liquid chromatography/mass spectrometry. Anal Chem 2001; 73:4640-6. [PMID: 11605842 DOI: 10.1021/ac010514w] [Citation(s) in RCA: 449] [Impact Index Per Article: 19.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
A method has been developed for the trace analysis of two classes of antimicrobials consisting of six sulfonamides (SAs) and five tetracyclines (TCs), which commonly are used for veterinary purposes and agricultural feed additives and are suspected to leach into ground and surface water. The method used solid-phase extraction and liquid chromatography/mass spectrometry (LC/MS) with positive ion electrospray. The unique combination of a metal chelation agent (Na2EDTA) with a macroporous copolymer resulted in quantitative recoveries by solid-phase extraction (mean recovery, 98 +/- 12%) at submicrogramper-liter concentrations. An ammonium formate/formic acid buffer with a methanol/water gradient was used to separate the antimicrobials and to optimize the signal intensity. Mass spectral fragmentation and ionization characteristics were determined for each class of compounds for unequivocal identification. For all SAs, a characteristic m/z 156 ion representing the sulfanilyl fragment was identified. TCs exhibited neutral losses of 17 amu resulting from the loss of ammonia and 35 amu from the subsequent loss of water. Unusual matrix effects were seen only for TCs in this first survey of groundwater and surface water samples from sites around the United States, requiring that TCs be quantitated using the method of standard additions.
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Affiliation(s)
- M E Lindsey
- United States Geological Survey, Lawrence, Kansas 66049, USA
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39
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Delépée R, Maume D, Le Bizec B, Pouliquen H. Preliminary assays to elucidate the structure of oxytetracycline's degradation products in sediments. Determination of natural tetracyclines by high-performance liquid chromatography-fast atom bombardment mass spectrometry. JOURNAL OF CHROMATOGRAPHY. B, BIOMEDICAL SCIENCES AND APPLICATIONS 2000; 748:369-81. [PMID: 11087079 DOI: 10.1016/s0378-4347(00)00355-8] [Citation(s) in RCA: 50] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
A very specific high-performance liquid chromatography-mass spectrometric method for the determination of natural tetracyclines was developed in order to characterise the degradation products of oxytetracycline in sediments. First, extraction used a clean up step with a Bond Elut Certify LRC cartridge. A 3 microm Spherisorb ODS1 column was then used with a methanol, acetonitrile and oxalic acid mobile phase gradient. Chromatographic resolution in these conditions was 3.31 between oxytetracycline and tetracycline. Two liquid chromatography-mass spectrometry methodologies based on a particle beam and a frit fast atom bombardment interface were developed. In the first approach, ionisation was performed in the negative chemical mode using methane as reacting gas. In the other case, glycerol-thioglycerol mixture was used as matrix to ensure good sensitivity. MS-MS experiment was performed to determinate oxytetracycline fragmentation pattern in the perspective of degradation product study.
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Affiliation(s)
- R Delépée
- Unité mixte de recherche INRA/ENVN, Chimiothérapie Aquacole et Environnement, Ecole Nationale Véterinaire de Nantes, Atlanpôle-La Chantrerie, France.
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40
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Determination of oxytetracycline and some impurities in plasma by non-aqueous capillary electrophoresis using solid-phase extraction. Chromatographia 2000. [DOI: 10.1007/bf02491017] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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41
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Monser L, Darghouth F. Rapid liquid chromatographic method for simultaneous determination of tetracyclines antibiotics and 6-epi-doxycycline in pharmaceutical products using porous graphitic carbon column. J Pharm Biomed Anal 2000; 23:353-62. [PMID: 10933527 DOI: 10.1016/s0731-7085(00)00329-0] [Citation(s) in RCA: 51] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Abstract
A rapid and selective high performance liquid chromatographic (HPLC) method has been developed for the separation and determination of five commercially used tetracyclines. The chromatography was performed on a porous graphitic carbon (PGC) column, using 0.05 M potassium phosphate buffer (pH 2.0)--acetonitrile (40 + 60) as the mobile phase and ultraviolet detection at 268 nm. The method permits the simultaneous determination of oxytetracycline, metacycline, chlortetracycline and doxycycline as well as the separation of one of their common impurities (6-Epi-doxycycline) in bulk powder and pharmaceutical preparations with detection limits of 0.5-2 microg ml(-1) and recoveries of 98.9-100.5%. Correlation coefficients for calibration curves in the range of 5-50 microg ml(-1) were greater than 0.999 for all tetracyclines. The within- and between-day precision was determined for both retention times and peak area. It is suggested that the proposed HPLC-PGC method should be used for routine quality control and dosage form assay of tetracyclines in pharmaceutical preparations. The chromatographic behaviour of the five tetracyclines was examined under variable mobile phase compositions, the results revealed that elution order and selectivity were dependent on the buffer agent used. Comparison between retentions obtained with PGC and with silica-based stationary phase (ODS), showed similar variations of the capacity factors with the mobile phase composition, but with a different elution order.
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Affiliation(s)
- L Monser
- Institut National des Sciences Appliquées et de la Technoloqie, Centre Urbain Nord, Tunis, Tunisia.
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42
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Abstract
Tetracycline antibiotics (TCs), such as oxytetracycline, tetracycline, chlortetracycline, and doxycycline, have for decades continued to play an important role in veterinary medicine and feed additives because of the broad spectrum antibiotics and their economical advantages. Many analysis methods of TCs, therefore, have been reported to monitor their residues in foods. We review the recent developments in chromatographic analysis methods for TCs in foods. This review involves the following techniques: thin layer chromatography, capillary electrophoresis, high-performance liquid chromatography, and sample preparation including extraction and clean up procedures.
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Affiliation(s)
- H Oka
- Aichi Prefectural Institute of Public Health, Nagoya, Japan.
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43
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Noguera-Ortí JF, Villanueva-Camañas RM, Ramis-Ramos G. Determination of synthetic antioxidants in dairy products and dietetic supplements by micellar liquid chromatography with direct sample injection. Chromatographia 2000. [DOI: 10.1007/bf02490695] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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44
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Choma I, Grenda D, Malinowska I, Suprynowicz Z. Determination of flumequine and doxycycline in milk by a simple thin-layer chromatographic method. JOURNAL OF CHROMATOGRAPHY. B, BIOMEDICAL SCIENCES AND APPLICATIONS 1999; 734:7-14. [PMID: 10574184 DOI: 10.1016/s0378-4347(99)00328-x] [Citation(s) in RCA: 40] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
Tetracycline and quinolone antibiotics have for many years served as important classes of veterinary drugs. Two representatives of both classes: doxycycline from tetracyclines and flumequine from quinolones are often administered together. When the withdrawal periods are not obeyed, the antibiotic residues may be present in edible products, e.g., in meat, eggs or milk. In the present paper a simple thin-layer chromatography (TLC) screening method is established for determining these drugs in milk. Only two developments of the plate with concentrating zone are needed: one as a clean-up procedure, the other as a proper analysis. The spots were detected both by UV lamp with dual wavelength (254 and 366 nm) and by densitometry.
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Affiliation(s)
- I Choma
- Department of Chemical Physics and Physicochemical Methods of Separation, M. Curie-Sklodowska University, Lublin, Poland
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45
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Kamel AM, Brown PR, Munson B. Electrospray Ionization Mass Spectrometry of Tetracycline, Oxytetracycline, Chlorotetracycline, Minocycline, and Methacycline. Anal Chem 1999; 71:968-77. [DOI: 10.1021/ac9807114] [Citation(s) in RCA: 42] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Amin M. Kamel
- Department of Drug Metabolism, Central Research Division, Pfizer Inc., Groton, Connecticut 06340
| | - Phyllis R. Brown
- Department of Chemistry, University of Rhode Island, Kingston, Rhode Island 02881
| | - Burnaby Munson
- Department of Chemistry and Biochemistry, University of Delaware, Newark, Delaware 19716
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