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Mishra V, Mantel A, Kapusta P, Prado-Roller A, Shiozawa H. Highly Luminescent TCNQ in Melamine. ACS APPLIED OPTICAL MATERIALS 2024; 2:1128-1135. [PMID: 38962570 PMCID: PMC11217937 DOI: 10.1021/acsaom.4c00110] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 03/05/2024] [Revised: 05/21/2024] [Accepted: 05/22/2024] [Indexed: 07/05/2024]
Abstract
Optical properties of molecules change drastically as a result of interactions with surrounding environments as observed in solutions, clusters, and aggregates. Here, we make 7,7,8,8-tetracyanoquinodimethane (TCNQ) highly luminescent by encapsulating it in crystalline melamine. Colored single crystals are synthesized by slow evaporation of aqueous tetrahydrofuran solutions of melamine and TCNQ. Single-crystal X-ray diffraction reveals the lattice structure of pure melamine, meaning that the color is of impurities. Both mass spectrometry and UV-vis spectroscopy combined with density-functional theory calculations elucidate that the impurity species are neutral TCNQ and its oxidation product, dicyano-p-toluoyl cyanide anion (DCTC-), whose concentrations in a melamine crystal can be controlled by adjusting the molar ratio between melamine and TCNQ in the precursor solution. Fluorescence excitation-emission wavelength mappings on the precursor solutions illustrate dominant emissions from DCTC- while the emission from TCNQ is quenched by the resonance energy transfer to DCTC-. On the contrary, TCNQ in crystalline melamine is a bright fluorophore whose emission wavelength centered at 450 nm with internal quantum yields as high as 19% and slow fluorescence lifetimes of about 2 ns. The method of encapsulating molecules into transparent melamine would make many other molecules fluorescent in solids.
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Affiliation(s)
- Vipin Mishra
- J.
Heyrovsky Institute of Physical Chemistry, Czech Academy of Sciences, Prague 182 23, Czech Republic
| | - Arthur Mantel
- J.
Heyrovsky Institute of Physical Chemistry, Czech Academy of Sciences, Prague 182 23, Czech Republic
| | - Peter Kapusta
- J.
Heyrovsky Institute of Physical Chemistry, Czech Academy of Sciences, Prague 182 23, Czech Republic
| | | | - Hidetsugu Shiozawa
- J.
Heyrovsky Institute of Physical Chemistry, Czech Academy of Sciences, Prague 182 23, Czech Republic
- Faculty
of Physics, University of Vienna, Vienna 1090, Austria
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2
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Li Y, Liu X, Hou Y, Wu Q, Hou J. A Higher Affinity Melamine Binding Aptamer Mutant for More Sensitive Detection. ChemistrySelect 2022. [DOI: 10.1002/slct.202201427] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Yani Li
- Hubei Key Laboratory of Edible Wild Plants Conservation and Utilization Hubei Normal University Huangshi Hubei province 435002 China
- Hubei Engineering Research Center of Special Wild Vegetables Breeding and Comprehensive Utilization Technology Hubei Normal University Huangshi, Hubei province 435002 China
- National Experimental Teaching Demonstration Center for Biology Hubei Normal University Huangshi Hubei province 435002 China
| | - Xixia Liu
- Hubei Key Laboratory of Edible Wild Plants Conservation and Utilization Hubei Normal University Huangshi Hubei province 435002 China
- Hubei Engineering Research Center of Special Wild Vegetables Breeding and Comprehensive Utilization Technology Hubei Normal University Huangshi, Hubei province 435002 China
- National Experimental Teaching Demonstration Center for Biology Hubei Normal University Huangshi Hubei province 435002 China
| | - Yaoyao Hou
- Hubei Key Laboratory of Edible Wild Plants Conservation and Utilization Hubei Normal University Huangshi Hubei province 435002 China
- Hubei Engineering Research Center of Special Wild Vegetables Breeding and Comprehensive Utilization Technology Hubei Normal University Huangshi, Hubei province 435002 China
- National Experimental Teaching Demonstration Center for Biology Hubei Normal University Huangshi Hubei province 435002 China
| | - Qin Wu
- Hubei Key Laboratory of Edible Wild Plants Conservation and Utilization Hubei Normal University Huangshi Hubei province 435002 China
- Hubei Engineering Research Center of Special Wild Vegetables Breeding and Comprehensive Utilization Technology Hubei Normal University Huangshi, Hubei province 435002 China
- National Experimental Teaching Demonstration Center for Biology Hubei Normal University Huangshi Hubei province 435002 China
| | - Jianjun Hou
- Hubei Key Laboratory of Edible Wild Plants Conservation and Utilization Hubei Normal University Huangshi Hubei province 435002 China
- Hubei Engineering Research Center of Special Wild Vegetables Breeding and Comprehensive Utilization Technology Hubei Normal University Huangshi, Hubei province 435002 China
- National Experimental Teaching Demonstration Center for Biology Hubei Normal University Huangshi Hubei province 435002 China
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3
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Zhang H, Weng Y. Safety Risks of Plant Fiber/Plastic Composites (PPCs) Intended for Food Contact: A Review of Potential Hazards and Risk Management Measures. TOXICS 2021; 9:343. [PMID: 34941777 PMCID: PMC8707241 DOI: 10.3390/toxics9120343] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/30/2021] [Revised: 11/25/2021] [Accepted: 12/07/2021] [Indexed: 11/17/2022]
Abstract
Plant fiber/plastic composites (PPCs), with the benefits of low cost and easy processing, have been widely used in the production of various food contact products. They are generally considered to be economical and environmentally friendly because of their natural raw materials (plant fibers) and recommended to be one of the ideal alternatives to traditional petrochemical-based plastics. However, in addition to plastic resins and plant fibers, some indispensable additives are involved in the production process of PPCs, which may pose food safety risks. To date, excessive migration of hazardous substances (such as melamine) has been reported in some products made of PPCs, and the safety and applicability of PPCs as food contact materials need to be further studied. In this paper, the main raw materials of PPCs used for food contact are taken as the pointcut to analyze the possible hazards, sources of hazards, and existing risk management measures in various countries. The conclusion shows that PPCs used for food contact may have potential safety risks at present. However, systematic research on migration methods and safety assessment are still insufficient, and further studies are needed regarding the main safety risks and migration patterns.
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Affiliation(s)
- Hong Zhang
- School of Light Industry, Beijing Technology and Business University, Beijing 100048, China;
- China National Center for Food Safety Risk Assessment, Beijing 100022, China
| | - Yunxuan Weng
- College of Chemistry and Materials Engineering, Beijing Technology and Business University, Beijing 100048, China
- Beijing Key Laboratory of Plastic Hygiene and Safety Quality Evaluation Technology, Beijing 100048, China
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4
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Assessment and detection of the potential contaminants from oil palm empty fruit bunch fiber-based biodegradable tray. Food Packag Shelf Life 2021. [DOI: 10.1016/j.fpsl.2021.100685] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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5
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Öztürk S, Demir N. Development of a novel IMAC sorbent for the identification of melamine in dairy products by HPLC. J Food Compost Anal 2021. [DOI: 10.1016/j.jfca.2021.103931] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
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6
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Ouyang X, Lu Z, Hu Y, Xie Z, Li G. Research progress on sample pretreatment methods for migrating substances from food contact materials. J Sep Sci 2021; 44:879-894. [DOI: 10.1002/jssc.202000829] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2020] [Revised: 12/06/2020] [Accepted: 12/07/2020] [Indexed: 12/11/2022]
Affiliation(s)
- Xiaoyan Ouyang
- School of Chemistry Sun Yat‐sen University Guangzhou P. R. China
| | - Zicheng Lu
- School of Chemistry Sun Yat‐sen University Guangzhou P. R. China
| | - Yuling Hu
- School of Chemistry Sun Yat‐sen University Guangzhou P. R. China
| | - Zenghui Xie
- School of Chemistry Sun Yat‐sen University Guangzhou P. R. China
| | - Gongke Li
- School of Chemistry Sun Yat‐sen University Guangzhou P. R. China
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7
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Inamuddin, Kanchi S. One-pot biosynthesis of silver nanoparticle using Colocasia esculenta extract: Colorimetric detection of melamine in biological samples. J Photochem Photobiol A Chem 2020. [DOI: 10.1016/j.jphotochem.2019.112310] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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8
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Shi H, Nie Q, Yang M, Wang C, Liu E, Ji Z, Fan J. A ratiometric fluorescence probe for melamine detection based on luminescence resonance energy transfer between the NaYF4:Yb, Er upconversion nanoparticles and gold nanoparticles. J Photochem Photobiol A Chem 2020. [DOI: 10.1016/j.jphotochem.2019.112259] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
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9
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Jeong S, Kwon WY, Hwang SH, Shin J, Kim Y, Lee M, Park KS. Fluorescence, turn-on detection of melamine based on its dual functions as fluorescence enhancer of DNA-AgNCs and Hg(II)-scavenger. ARTIFICIAL CELLS NANOMEDICINE AND BIOTECHNOLOGY 2019; 47:621-625. [DOI: 10.1080/21691401.2019.1574264] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Affiliation(s)
- Sehan Jeong
- Department of Biological Engineering, College of Engineering, Konkuk University, Seoul, Republic of Korea
| | - Woo Young Kwon
- Department of Biological Engineering, College of Engineering, Konkuk University, Seoul, Republic of Korea
| | - Sung Hyun Hwang
- Department of Biological Engineering, College of Engineering, Konkuk University, Seoul, Republic of Korea
| | - Jiye Shin
- Department of Biological Engineering, College of Engineering, Konkuk University, Seoul, Republic of Korea
| | - Yonghwan Kim
- Daisung Green Tech, Gyeonggi-do, Republic of Korea
| | - Miran Lee
- Daisung Green Tech, Gyeonggi-do, Republic of Korea
| | - Ki Soo Park
- Department of Biological Engineering, College of Engineering, Konkuk University, Seoul, Republic of Korea
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Li M, Fan Y, Liu Z, Xie Y, Guo Y, Cheng Y, Qian H, Yao W. Tracing the melamine migration from three-piece tin cans into food simulants during coating process. Lebensm Wiss Technol 2019. [DOI: 10.1016/j.lwt.2018.11.042] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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11
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Jigyasa, Rajput JK. Bio-polyphenols promoted green synthesis of silver nanoparticles for facile and ultra-sensitive colorimetric detection of melamine in milk. Biosens Bioelectron 2018; 120:153-159. [DOI: 10.1016/j.bios.2018.08.054] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2018] [Revised: 08/14/2018] [Accepted: 08/23/2018] [Indexed: 02/01/2023]
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12
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Yuan X, Luo K, Wu Y, He J, Zhao Z, Yu D. Investigation on the Stability of Derivative Melam from Melamine Pyrolysis under High Pressure. NANOMATERIALS 2018; 8:nano8030172. [PMID: 29562648 PMCID: PMC5869663 DOI: 10.3390/nano8030172] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/01/2018] [Revised: 03/16/2018] [Accepted: 03/16/2018] [Indexed: 11/16/2022]
Abstract
Although various kinds of carbon nitride precursors have been proposed, s-triazine-based structures are hardly reported because of their unfavorable energy, higher than that of heptazine-based ones. In this study, we investigate the thermal stability of s-triazine-based melam processed at a high pressure of 5 GPa and a temperature of 400–700 °C and complete the analyses of the composition and structure of the treated samples through X-ray diffraction (XRD), Fourier-transform infrared spectroscopy (FTIR), and elemental analyses (EA). Results show that melam can stably exist up to 600 °C at 5 GPa. XRD and FTIR analyses reveal that residual melamine can be pyrolyzed into melam as temperature increases from 400 °C to 600 °C at a high pressure, suggesting that melam may be purified through high-pressure pyrolysis. Further melam polymerization at a higher pressure is a promising strategy for the preparation of s-triazine-based carbon nitride precursors used for bulk carbon nitride synthesis.
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Affiliation(s)
- Xiaohong Yuan
- State Key Laboratory of Metastable Materials Science and Technology, Yanshan University, Qinhuangdao 066004, China.
| | - Kun Luo
- State Key Laboratory of Metastable Materials Science and Technology, Yanshan University, Qinhuangdao 066004, China.
- Hebei Key Laboratory of Microstructural Material Physics, School of Science, Yanshan University, Qinhuangdao 066004, China.
| | - Yingju Wu
- State Key Laboratory of Metastable Materials Science and Technology, Yanshan University, Qinhuangdao 066004, China.
| | - Julong He
- State Key Laboratory of Metastable Materials Science and Technology, Yanshan University, Qinhuangdao 066004, China.
| | - Zhisheng Zhao
- State Key Laboratory of Metastable Materials Science and Technology, Yanshan University, Qinhuangdao 066004, China.
| | - Dongli Yu
- State Key Laboratory of Metastable Materials Science and Technology, Yanshan University, Qinhuangdao 066004, China.
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Chu CY, Fung KP, Wang CC. Effects of low-dose melamine exposure during pregnancy on maternal and fetal kidneys in rats. ENVIRONMENTAL TOXICOLOGY 2018; 33:370-380. [PMID: 29265596 DOI: 10.1002/tox.22525] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/06/2017] [Revised: 11/29/2017] [Accepted: 12/02/2017] [Indexed: 06/07/2023]
Abstract
Despite the previous reports on melamine contamination in high concentrations some years ago, there were not many studies on low-level exposure in daily life, particularly in pregnancy. We investigated the effect of low-dose melamine on the kidneys of the pregnant rats and their developing embryos/fetuses during various gestational stages namely implantation, gastrulation, organogenesis, maturation and whole pregnancy. Our results showed that the repeated low level of melamine (12.5, 25, and 50 mg/kg bw/d) during pregnancy did not cause obstruction of renal tubules although more precipitating crystals were found in the early gestational periods. Simple hyperplasia in the maternal tubules and pelvic epithelium were more prominent after exposed to melamine during the whole gestational period. Neonatal kidneys significantly suffered more from congestion in glomeruli and interstitium, dilated tubules and interstitial edema after melamine administration to the mother in the late and the whole gestational periods. A trend of advance of glomerular development in fetuses was also observed. We conclude that in utero exposure of low-level melamine could post a risk on the kidneys of the pregnant mother as well as the developing fetuses, which may further increase the possibility of other health problems later in life.
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Affiliation(s)
- Ching Yan Chu
- Department of Obstetrics & Gynaecology, The Chinese University of Hong Kong, Hong Kong
| | - Kwok Pui Fung
- School of Biomedical Sciences, The Chinese University of Hong Kong, Hong Kong
| | - Chi Chiu Wang
- Department of Obstetrics & Gynaecology, The Chinese University of Hong Kong, Hong Kong
- School of Biomedical Sciences, The Chinese University of Hong Kong, Hong Kong
- Li Ka Shing Institute of Health Sciences, The Chinese University of Hong Kong, Hong Kong
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14
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León V, Castañeda G, Herrero MA, Vázquez E. Gold nanoparticles as analytical tools for the quantification of small quantities of triazine derivatives anchored on graphene in water dispersions. RSC Adv 2017. [DOI: 10.1039/c7ra02358h] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023] Open
Abstract
A fast, simple and sensitive method develops to detect ppm levels of melamine anchored on graphene in aqueous graphene dispersions.
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Affiliation(s)
- Verónica León
- Departamento de Química Orgánica
- Inorgánica y Bioquímica
- Facultad de Ciencias y Tecnologías Químicas-IRICA
- Universidad de Castilla–La Mancha
- 13071 Ciudad Real
| | - Gregorio Castañeda
- Departamento de Química Analítica y Tecnología de Alimentos
- Facultad de Ciencias y Tecnologías Químicas-IRICA
- Universidad de Castilla–La Mancha
- 13071 Ciudad Real
- Spain
| | - María Antonia Herrero
- Departamento de Química Orgánica
- Inorgánica y Bioquímica
- Facultad de Ciencias y Tecnologías Químicas-IRICA
- Universidad de Castilla–La Mancha
- 13071 Ciudad Real
| | - Ester Vázquez
- Departamento de Química Orgánica
- Inorgánica y Bioquímica
- Facultad de Ciencias y Tecnologías Químicas-IRICA
- Universidad de Castilla–La Mancha
- 13071 Ciudad Real
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15
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Ochs SDM, Furtado LDA, Cerqueira WV, Pereira Netto AD. Characterization of the variation of carbonyl compounds concentrations before, during, and after the renovation of an apartment at Niterói, Brazil. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2016; 23:15605-15615. [PMID: 27130339 DOI: 10.1007/s11356-016-6657-6] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/23/2015] [Accepted: 04/06/2016] [Indexed: 06/05/2023]
Abstract
The present work reports the variation of 31 carbonyl compounds (CC) in an apartment located at Niterói City, Rio de Janeiro State, Brazil. Eight sampling campaigns were conducted through a 1-year period, and three areas (living room, kitchen, and bedroom) were evaluated before, during, and after the renovation activities and reoccupation of the apartment. Samples were collected using SEP-PAK cartridges impregnated with 2,4-dinitrophenylhydrazine, and the hydrazones were analyzed using rapid resolution liquid chromatography with UV detection. The lowest total concentration of CC (19.0 ± 1.5 μg m(-3)) was found before the renovation when the apartment was empty, but door varnishing resulted in highest contamination of the apartment (1386 ± 384 μg m(-3)); however, an important dispersion of CC was observed in the subsequent sampling (148 ± 1.8 μg m(-3)). After apartment reoccupation, the indoor contamination seemed to depend on the routine activities taken there, such as household product use and cooking activities, but apparently, local temperature increase favored the vaporization of the volatile CC from the building materials in the apartment. As far as we are concerned, this is the first study comparing the concentrations of 31 CC in residential areas before, during, and after renovation activities taken in Brazil.
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Affiliation(s)
- Soraya de Mendonça Ochs
- Programa de Pós-Graduação em Química-Instituto de Química, Universidade Federal Fluminense, Outeiro de São João Batista, s/n, 24020-141, Valonguinho, Centro, Niterói, RJ, Brazil
- Laboratório de Química Analítica Fundamental e Aplicada-Departamento de Química Analítica, Instituto de Química-Universidade Federal Fluminense, Outeiro de São João Batista, s/n, 24020-141, Valonguinho, Centro, Niterói, RJ, Brazil
| | - Leonardo de Almeida Furtado
- Programa de Pós-Graduação em Química-Instituto de Química, Universidade Federal Fluminense, Outeiro de São João Batista, s/n, 24020-141, Valonguinho, Centro, Niterói, RJ, Brazil
| | - Wildson Vieira Cerqueira
- Programa de Pós-Graduação em Química-Instituto de Química, Universidade Federal Fluminense, Outeiro de São João Batista, s/n, 24020-141, Valonguinho, Centro, Niterói, RJ, Brazil
- Laboratório de Química Analítica Fundamental e Aplicada-Departamento de Química Analítica, Instituto de Química-Universidade Federal Fluminense, Outeiro de São João Batista, s/n, 24020-141, Valonguinho, Centro, Niterói, RJ, Brazil
| | - Annibal Duarte Pereira Netto
- Programa de Pós-Graduação em Química-Instituto de Química, Universidade Federal Fluminense, Outeiro de São João Batista, s/n, 24020-141, Valonguinho, Centro, Niterói, RJ, Brazil.
- Laboratório de Química Analítica Fundamental e Aplicada-Departamento de Química Analítica, Instituto de Química-Universidade Federal Fluminense, Outeiro de São João Batista, s/n, 24020-141, Valonguinho, Centro, Niterói, RJ, Brazil.
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Peris-Vicente J, Albiol-Chiva J, Roca-Genovés P, Esteve-Romero J. Advances on melamine determination by micellar liquid chromatography: A review. J LIQ CHROMATOGR R T 2016. [DOI: 10.1080/10826076.2016.1152482] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
Affiliation(s)
- Juan Peris-Vicente
- Química Bioanalítica, QFA, ESTCE, Campus del Riu Sec, Universitat Jaume I, Castelló, Spain
| | - Jaume Albiol-Chiva
- Química Bioanalítica, QFA, ESTCE, Campus del Riu Sec, Universitat Jaume I, Castelló, Spain
| | - Pasqual Roca-Genovés
- Química Bioanalítica, QFA, ESTCE, Campus del Riu Sec, Universitat Jaume I, Castelló, Spain
| | - Josep Esteve-Romero
- Química Bioanalítica, QFA, ESTCE, Campus del Riu Sec, Universitat Jaume I, Castelló, Spain
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18
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Demirhan BE, Demirhan B, Kara HS. Room-temperature phosphorescence determination of melamine in dairy products using l-cysteine-capped Mn-doped zinc sulfide (ZnS) quantum dots. J Dairy Sci 2015; 98:2992-3000. [DOI: 10.3168/jds.2014-9221] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2014] [Accepted: 01/30/2015] [Indexed: 11/19/2022]
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19
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Finete VDLM, Gouvêa MM, Marques FFDC, Pereira Netto AD. Validation of a method of high performance liquid chromatography with fluorescence detection for melamine determination in UHT whole bovine milk. Food Control 2015. [DOI: 10.1016/j.foodcont.2014.12.001] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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20
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Abstract
Melamine is an emerging contaminant in milk, infant formula and pet food.
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Affiliation(s)
- Ying Li
- Department of Food Quality and Safety
- Jilin University
- Changchun 130062
- China
| | - Jingyue Xu
- Department of Food Quality and Safety
- Jilin University
- Changchun 130062
- China
| | - Chunyan Sun
- Department of Food Quality and Safety
- Jilin University
- Changchun 130062
- China
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21
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Kong Y, Wei C, Hou Z, Wang Z, Yuan J, Yu J, Zhao Y, Tang Y, Gao M. Stacking and analysis of melamine in milk products with acetonitrile-salt stacking technique in capillary electrophoresis. JOURNAL OF ANALYTICAL METHODS IN CHEMISTRY 2014; 2014:212697. [PMID: 25197612 PMCID: PMC4150491 DOI: 10.1155/2014/212697] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 06/28/2014] [Accepted: 07/22/2014] [Indexed: 06/03/2023]
Abstract
Melamine was measured in real milk products with capillary electrophoresis (CE) based on acetonitrile-salt stacking (ASS) method. Real milk samples were deproteinized with acetonitrile at a final concentration of 60% (v/v) and then injected hydrodynamically at 50 mBar for 40.0 s. The optimized buffer contains 80.0 mmol/L pH 2.8 phosphates. Melamine could be detected within 20.0 min at +10 kV with a low limit of detection (LOD) of 0.03 μmol/L. Satisfactory reproducibility (inter- and intraday RSD% both for migration time and peak area was lower than 5.0%) and a wide linearity range of 0.05 μmol/L ~ 10.0 μmol/L were achieved. The proposed method was suitable for routine assay of MEL in real milk samples that was subjected to a simple treatment step.
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Affiliation(s)
- Yu Kong
- Institute of Mitochondrial Biology and Medicine, The Key Laboratory of Biomedical Information Engineering of Ministry of Education, Department of Bioengineering, School of Life Science and Technology, Xi'an Jiaotong University, Xi'an 710049, China
| | - Chong Wei
- Department of Criminal and Inspectoral, Public Security Bureau of Han Zhong City, Shaanxi, China
| | - Zhanwu Hou
- Institute of Mitochondrial Biology and Medicine, The Key Laboratory of Biomedical Information Engineering of Ministry of Education, Department of Bioengineering, School of Life Science and Technology, Xi'an Jiaotong University, Xi'an 710049, China
| | - Zilong Wang
- Institute of Mitochondrial Biology and Medicine, The Key Laboratory of Biomedical Information Engineering of Ministry of Education, Department of Bioengineering, School of Life Science and Technology, Xi'an Jiaotong University, Xi'an 710049, China
| | - Jiaqiang Yuan
- Institute of Mitochondrial Biology and Medicine, The Key Laboratory of Biomedical Information Engineering of Ministry of Education, Department of Bioengineering, School of Life Science and Technology, Xi'an Jiaotong University, Xi'an 710049, China
| | - Jiang Yu
- Institute of Mitochondrial Biology and Medicine, The Key Laboratory of Biomedical Information Engineering of Ministry of Education, Department of Bioengineering, School of Life Science and Technology, Xi'an Jiaotong University, Xi'an 710049, China
| | - Yongxi Zhao
- Institute of Mitochondrial Biology and Medicine, The Key Laboratory of Biomedical Information Engineering of Ministry of Education, Department of Bioengineering, School of Life Science and Technology, Xi'an Jiaotong University, Xi'an 710049, China
| | - Yuhai Tang
- Institute of Mitochondrial Biology and Medicine, The Key Laboratory of Biomedical Information Engineering of Ministry of Education, Department of Bioengineering, School of Life Science and Technology, Xi'an Jiaotong University, Xi'an 710049, China
| | - Meili Gao
- Institute of Mitochondrial Biology and Medicine, The Key Laboratory of Biomedical Information Engineering of Ministry of Education, Department of Bioengineering, School of Life Science and Technology, Xi'an Jiaotong University, Xi'an 710049, China
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