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Shutevska K, Bajatovska AM, Anastasova L, Zhivikj Z, Zafirova Gjorgievska M, Spasikj S, Petreska Ivanovska T, Makreski P, Geskovski N. Rapid quantification models for assessing melamine adulteration in sport nutrition supplements via benchtop and portable NIRS instruments. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2024; 317:124370. [PMID: 38744225 DOI: 10.1016/j.saa.2024.124370] [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: 12/29/2023] [Revised: 04/23/2024] [Accepted: 04/27/2024] [Indexed: 05/16/2024]
Abstract
Sport nutrition supplements (SNS) are vulnerable to adulteration with melamine, artificially augmenting their protein content as determined by conventional assay methodologies. Vibrational spectroscopy techniques are suitable for the detection of adulteration because they allow rapid analysis, require minimal sample preparation, and can perform numerous analyses in a short time. The aim of this study was to develop rapid quantification models for the determination of melamine adulteration in a variety of SNS matrices using NIRS (near-infrared spectroscopy) in combination with multivariate data processing. Moreover, a comparison of benchtop and portable NIR instruments was carried out. Employing a stepwise approach involving OPLS-DA and PLS analysis, matrix discrimination and prediction ability were investigated. The benchtop instrument effectively discriminated among matrices (R2Y = 0.964, Q2 = 0.933), while the portable device, although showing a slightly altered pattern, maintained favorable discrimination capability (R2Y = 0.966, Q2 = 0.931). The quantitative PLS models for each SNS matrix exhibited comparable statistical indicators for both instruments with reasonable errors for melamine content estimation and prediction (RMSEE: 0.3-2.4 %, RMSEP: 0.98-2.99 %). Higher estimation and prediction errors were observed for protein-containing samples in both acquisition modes, probably due to the tendency of protein agglomeration and adhesion to different surfaces, which affects the homogeneity of the powder. Despite data loss due to the narrower spectral range and lower resolution of the portable instrument, all models were found to be suitable for predicting melamine content in sport nutrition supplements.
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Affiliation(s)
- Kristina Shutevska
- Ss Cyril and Methodius University in Skopje, Faculty of Pharmacy, Majka Tereza 47, 1000, Skopje, Republic of North Macedonia.
| | - Ana Marija Bajatovska
- Ss Cyril and Methodius University in Skopje, Faculty of Pharmacy, Majka Tereza 47, 1000, Skopje, Republic of North Macedonia
| | - Liljana Anastasova
- Ss Cyril and Methodius University in Skopje, Faculty of Pharmacy, Majka Tereza 47, 1000, Skopje, Republic of North Macedonia
| | - Zoran Zhivikj
- Ss Cyril and Methodius University in Skopje, Faculty of Pharmacy, Majka Tereza 47, 1000, Skopje, Republic of North Macedonia
| | - Marija Zafirova Gjorgievska
- Ss Cyril and Methodius University in Skopje, Faculty of Pharmacy, Majka Tereza 47, 1000, Skopje, Republic of North Macedonia
| | - Sanja Spasikj
- Center for Public Health - Kumanovo, 11 Oktomvri bb, 1300, Kumanovo, Republic of North Macedonia
| | - Tanja Petreska Ivanovska
- Ss Cyril and Methodius University in Skopje, Faculty of Pharmacy, Majka Tereza 47, 1000, Skopje, Republic of North Macedonia
| | - Petre Makreski
- Ss Cyril and Methodius University in Skopje, Faculty of Natural Sciences and Mathematics, Institute of Chemistry, Arhimedova 5, 1000, Skopje, Republic of North Macedonia
| | - Nikola Geskovski
- Ss Cyril and Methodius University in Skopje, Faculty of Pharmacy, Majka Tereza 47, 1000, Skopje, Republic of North Macedonia.
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2
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Ma Y, Cui H, Chen R, Zhang R, Lin J, Ren S, Liang J, Gao Z. Rapid detection of melamine by DNA Walker mediated SERS sensing technique based on signal amplification function. Mikrochim Acta 2024; 191:283. [PMID: 38652169 DOI: 10.1007/s00604-024-06336-x] [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: 01/16/2024] [Accepted: 03/26/2024] [Indexed: 04/25/2024]
Abstract
A new method is proposed for detecting typical melamine dopants in food using surface-enhanced Raman scattering (SERS) biosensing technology. Melamine specific aptamer was used as the identification probe, and gold magnets (AuNPs@MNPs) and small gold nanoparticles (AuNPs@MBA) were used as the basis for Raman detection. The Raman signal of the detection system can directly detect melamine quantitatively. Under optimized conditions, the detection of melamine was carried out in the low concentration range of 0.001-500 mg/kg, the enhancement factor (EF) was 2.3 × 107, and the detection limit was 0.001 mg/kg. The method is sensitive and rapid, and can be used for the rapid detection of melamine in the field environment.
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Affiliation(s)
- Yujing Ma
- State Key Laboratory of Food Nutrition and Safety, Tianjin University of Science and Technology, Tianjin, 300457, China
- Tianjin Key Laboratory of Risk Assessment and Control Technology for Environment and Food Safety, Tianjin Institute of Environmental and Operational Medicine, Tianjin, 300050, China
| | - Han Cui
- State Key Laboratory of Food Nutrition and Safety, Tianjin University of Science and Technology, Tianjin, 300457, China
- Tianjin Key Laboratory of Risk Assessment and Control Technology for Environment and Food Safety, Tianjin Institute of Environmental and Operational Medicine, Tianjin, 300050, China
| | - Ruipeng Chen
- Tianjin Key Laboratory of Risk Assessment and Control Technology for Environment and Food Safety, Tianjin Institute of Environmental and Operational Medicine, Tianjin, 300050, China
| | - Rui Zhang
- State Key Laboratory of Food Nutrition and Safety, Tianjin University of Science and Technology, Tianjin, 300457, China
- Tianjin Key Laboratory of Risk Assessment and Control Technology for Environment and Food Safety, Tianjin Institute of Environmental and Operational Medicine, Tianjin, 300050, China
| | - Jiaqi Lin
- Tianjin Key Laboratory of Risk Assessment and Control Technology for Environment and Food Safety, Tianjin Institute of Environmental and Operational Medicine, Tianjin, 300050, China
| | - Shuyue Ren
- Tianjin Key Laboratory of Risk Assessment and Control Technology for Environment and Food Safety, Tianjin Institute of Environmental and Operational Medicine, Tianjin, 300050, China.
| | - Jun Liang
- State Key Laboratory of Food Nutrition and Safety, Tianjin University of Science and Technology, Tianjin, 300457, China.
| | - Zhixian Gao
- Tianjin Key Laboratory of Risk Assessment and Control Technology for Environment and Food Safety, Tianjin Institute of Environmental and Operational Medicine, Tianjin, 300050, China.
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3
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Joshi R, Adhikari S, Kim M, Jang Y, Min HJ, Lee D, Cho BK. Trace level detection of melamine and cyanuric acid extracted from pet liquid food (milk) using a SERS Au nanogap substrate. Curr Res Food Sci 2024; 8:100726. [PMID: 38590692 PMCID: PMC10999514 DOI: 10.1016/j.crfs.2024.100726] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2023] [Revised: 02/26/2024] [Accepted: 03/26/2024] [Indexed: 04/10/2024] Open
Abstract
This study reported an application of Au nanogap substrates for surface-enhanced Raman scattering (SERS) measurements to quantitatively analyze melamine and its derivative products at trace levels in pet liquid food (milk) combined with a waveband selection approach, namely variable importance in projection (VIP). Six different concentrations of melamine, cyanuric acid, and melamine combined with cyanuric acid were created, and SERS spectra were acquired from 550 to 1620cm-1. Detection was possible up to 200 pM for melamine-contaminated samples, and 400 pM concentration detection for other two groups. The VIP-PLSR models obtained correlation coefficient (R2) values of 0.997, 0.985, and 0.981, with root mean square error of prediction (RMSEP) values of 18.492 pM, 19.777 pM, and 15.124 pM for prediction datasets. Additionally, partial least square discriminant analysis (PLS-DA) was used to classify both pure and different concentrations of spiked samples. The results showed that the maximum classification accuracy for melamine was 100%, for cyanuric acid it was 96%, and for melamine coupled with cyanuric acid it was 95%. The results obtained clearly demonstrated that the Au nanogap substrate offers low-concentration, rapid, and efficient detection of hazardous additive chemicals in pet consuming liquid food.
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Affiliation(s)
- Rahul Joshi
- Department of Biosystems Machinery Engineering, Chungnam National University, 99 Daehak-to, Yuseong-gu, Daejeon, 34134, South Korea
| | - Samir Adhikari
- Department of Physics, Chungnam National University, Daejeon, 34134, South Korea
| | - Minjun Kim
- Department of Physics, Chungnam National University, Daejeon, 34134, South Korea
| | - Yudong Jang
- Institute of Quantum Systems, Chungnam National University, Daejeon, 34134, South Korea
| | - Hyun Jung Min
- Department of Mechanical Engineering, Purdue University, IN, 47907, USA
| | - Donghan Lee
- Department of Physics, Chungnam National University, Daejeon, 34134, South Korea
- Institute of Quantum Systems, Chungnam National University, Daejeon, 34134, South Korea
| | - Byoung-Kwan Cho
- Department of Biosystems Machinery Engineering, Chungnam National University, 99 Daehak-to, Yuseong-gu, Daejeon, 34134, South Korea
- Department of Smart Agriculture Systems, College of Agricultural and Life Science, Chungnam National University, 99 Daehak-to, Yuseong-gu, Daejeon, 34134, South Korea
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Yang Q, Deng X, Niu B, Lin H, Jing J, Chen Q. Qualitative and semi-quantitative analysis of melamine in liquid milk based on surface-enhanced Raman spectroscopy. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2023; 303:123143. [PMID: 37478706 DOI: 10.1016/j.saa.2023.123143] [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: 05/05/2023] [Revised: 06/25/2023] [Accepted: 07/11/2023] [Indexed: 07/23/2023]
Abstract
Melamine is one of the common limited contaminations in dairy products. The traditional detection method has a long period and complicated pretreatment process. The rapid detection method is the better method to solve the screening of limited contaminations. In this paper, taking melamine as the research object, the surface enhanced Raman spectrum of melamine in liquid milk were collected by portable Raman spectrometer, and melamine was qualitatively identified and semi-quantitatively analyzed by Raman characteristic peak and Raman intensity, and a simple and efficient rapid screening method for limited contaminations was developed. The limit of detection is 0.25 mg/kg. The probability of detection is 100% at 2.5 mg/kg, which is the same between the two laboratories, indicating that the semi-quantitative method has good repeatability. The method of melamine proposed in this study can meet the rapid screening requirements of limited contaminations at the maximum residue limit, and has a good application prospect.
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Affiliation(s)
- Qiaoling Yang
- School of Environmental and Chemical Engineering, Shanghai University, Shanghai 200444, China; School of Life Sciences, Shanghai University, Shanghai 200444, China.
| | - Xiaojun Deng
- School of Kinesiology, Shanghai University of Sport, Shanghai 200438, China.
| | - Bing Niu
- School of Life Sciences, Shanghai University, Shanghai 200444, China.
| | - Hong Lin
- Department of Endocrine and Metabolic Diseases, Shanghai Institute of Endocrine and Metabolic Diseases, Ruijin Hospital, Shanghai Jiaotong University School of Medicine, Shanghai 200025, China.
| | - Jing Jing
- School of Kinesiology, Shanghai University of Sport, Shanghai 200438, China.
| | - Qin Chen
- School of Life Sciences, Shanghai University, Shanghai 200444, China.
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Joshi R, Gg LP, Faqeerzada MA, Bhattacharya T, Kim MS, Baek I, Cho BK. Deep Learning-Based Quantitative Assessment of Melamine and Cyanuric Acid in Pet Food Using Fourier Transform Infrared Spectroscopy. SENSORS (BASEL, SWITZERLAND) 2023; 23:s23115020. [PMID: 37299748 DOI: 10.3390/s23115020] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/21/2023] [Revised: 05/18/2023] [Accepted: 05/20/2023] [Indexed: 06/12/2023]
Abstract
Melamine and its derivative, cyanuric acid, are occasionally added to pet meals because of their nitrogen-rich qualities, leading to the development of several health-related issues. A nondestructive sensing technique that offers effective detection must be developed to address this problem. In conjunction with machine learning and deep learning technique, Fourier transform infrared (FT-IR) spectroscopy was employed in this investigation for the nondestructive quantitative measurement of eight different concentrations of melamine and cyanuric acid added to pet food. The effectiveness of the one-dimensional convolutional neural network (1D CNN) technique was compared with that of partial least squares regression (PLSR), principal component regression (PCR), and a net analyte signal (NAS)-based methodology, called hybrid linear analysis (HLA/GO). The 1D CNN model developed for the FT-IR spectra attained correlation coefficients of 0.995 and 0.994 and root mean square error of prediction values of 0.090% and 0.110% for the prediction datasets on the melamine- and cyanuric acid-contaminated pet food samples, respectively, which were superior to those of the PLSR and PCR models. Therefore, when FT-IR spectroscopy is employed in conjunction with a 1D CNN model, it serves as a potentially rapid and nondestructive method for identifying toxic chemicals added to pet food.
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Affiliation(s)
- Rahul Joshi
- Department of Biosystems Machinery Engineering, College of Agricultural and Life Science, Chungnam National University, Daejeon 34134, Republic of Korea
| | - Lakshmi Priya Gg
- Department of Multimedia, VIT School of Design (V-SIGN), Vellore Institute of Technology (VIT), Vellore 632014, India
| | - Mohammad Akbar Faqeerzada
- Department of Biosystems Machinery Engineering, College of Agricultural and Life Science, Chungnam National University, Daejeon 34134, Republic of Korea
| | - Tanima Bhattacharya
- Department of Biosystems Machinery Engineering, College of Agricultural and Life Science, Chungnam National University, Daejeon 34134, Republic of Korea
| | - Moon Sung Kim
- Environmental Microbial and Food Safety Laboratory, Agricultural Research Service, United States Department of Agriculture, Powder Mill Road, BARC-East, Bldg 303, Beltsville, MD 20705, USA
| | - Insuck Baek
- Environmental Microbial and Food Safety Laboratory, Agricultural Research Service, United States Department of Agriculture, Powder Mill Road, BARC-East, Bldg 303, Beltsville, MD 20705, USA
| | - Byoung-Kwan Cho
- Department of Biosystems Machinery Engineering, College of Agricultural and Life Science, Chungnam National University, Daejeon 34134, Republic of Korea
- Department of Smart Agricultural Systems, College of Agricultural and Life Science, Chungnam National University, Daejeon 34134, Republic of Korea
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Alizadeh Sani M, Jahed-Khaniki G, Ehsani A, Shariatifar N, Dehghani MH, Hashemi M, Hosseini H, Abdollahi M, Hassani S, Bayrami Z, McClements DJ. Metal-Organic Framework Fluorescence Sensors for Rapid and Accurate Detection of Melamine in Milk Powder. BIOSENSORS 2023; 13:94. [PMID: 36671929 PMCID: PMC9855360 DOI: 10.3390/bios13010094] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/05/2022] [Revised: 12/28/2022] [Accepted: 01/03/2023] [Indexed: 06/17/2023]
Abstract
In this research, a simple, label-free, and ultra-sensitive fluorescent platform based on a metal-organic framework (MOF) has been developed to detect melamine in milk powder. This fluorescence sensor was fabricated from sensitized terbium (Tb)@NH2-MIL-253 (Al) MOF using a hydrothermal method that involved combining the green emission of Tb (λem = 545 nm) with the blue emission of NH2-MIL-253(Al) MOF (λem = 430 nm) under a single excitation wavelength (λex = 335 nm). The fluorescence sensor was then used under optimized conditions (pH = 9.0; sensor concentration = 30 mg/L; response time = 30 s) to quantify melamine in milk powder. The accuracy, sensitivity, and reproducibility of this sensor were established compared to the high-performance liquid chromatography (HPLC) method. The linear range and lower limit of detection (LLOD, computed with 3σ/S) of the sensor were between 40-396.45 nM (equal to 25 µg/kg-0.25 mg/kg) and 40 nM (equal to 25 µg/kg), respectively, which is much less than the maximum residual level (MRL) for the detection of melamine in infant formula (1 mg/kg) and other foods/feeds (2.5 mg/kg). Additionally, the results had good agreement with the HPLC outcomes, suggesting that the NH2-MIL-253(Al) MOF sensing probe has great precision and repeatability. To conclude, the new fluorescence sensor developed in this study can accurately and sensitively detect melamine in food samples, which may be useful for screening for adulteration of milk powders and other foods.
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Affiliation(s)
- Mahmood Alizadeh Sani
- Division of Food Safety and Hygiene, Department of Environmental Health Engineering, School of Public Health, Tehran University of Medical Sciences, Tehran 1417614411, Iran
| | - Gholamreza Jahed-Khaniki
- Division of Food Safety and Hygiene, Department of Environmental Health Engineering, School of Public Health, Tehran University of Medical Sciences, Tehran 1417614411, Iran
| | - Ali Ehsani
- Nutrition Research Center, Department of Food Science and Technology, Faculty of Nutrition and Food Sciences, Tabriz University of Medical Sciences, Tabriz 516615731, Iran
| | - Nabi Shariatifar
- Division of Food Safety and Hygiene, Department of Environmental Health Engineering, School of Public Health, Tehran University of Medical Sciences, Tehran 1417614411, Iran
| | - Mohammad Hadi Dehghani
- Department of Environmental Health Engineering, School of Public Health, Tehran University of Medical Sciences, Tehran 1416634793, Iran
- Institute for Environmental Research, Center for Solid Waste Research, Tehran University of Medical Sciences, Tehran 1416634793, Iran
| | - Mohammad Hashemi
- Department of Nutrition, Faculty of Medicine, Mashhad University of Medical Sciences, Mashhad 9138813944, Iran
| | - Hedayat Hosseini
- Department of Food Science and Technology, National Nutrition and Food Technology Research Institute, Faculty of Nutrition Sciences and Food Technology, Shahid Beheshti University of Medical Sciences, Tehran 1985717443, Iran
| | - Mohammad Abdollahi
- Department of Toxicology and Pharmacology, Faculty of Pharmacy, Tehran University of Medical Sciences, Tehran 1416634793, Iran
| | - Shokoufeh Hassani
- Toxicology and Diseases Specialty Group, Pharmaceutical Sciences Research Center (PSRC), Tehran University of Medical Sciences, Tehran 1416634793, Iran
| | - Zahra Bayrami
- Toxicology and Diseases Specialty Group, Pharmaceutical Sciences Research Center (PSRC), Tehran University of Medical Sciences, Tehran 1416634793, Iran
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Chegeni M, Mehri M. Persimmon tannin-propane-melamine-zirconium as a bio-based organocatalyst polymer for the Knoevenagel condensation. J Organomet Chem 2023. [DOI: 10.1016/j.jorganchem.2022.122585] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
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8
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Kharajinezhadian R, Javad Chaichi M, Nazari O, Mansour Lakouraj M, Hasantabar V. Fraud monitoring using a new disposable photoluminescence sensor in milk. Microchem J 2023. [DOI: 10.1016/j.microc.2023.108437] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
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9
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Kuswandi B, Hidayat MA, Noviana E. Paper-Based Electrochemical Biosensors for Food Safety Analysis. BIOSENSORS 2022; 12:1088. [PMID: 36551055 PMCID: PMC9775995 DOI: 10.3390/bios12121088] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/27/2022] [Revised: 11/15/2022] [Accepted: 11/21/2022] [Indexed: 06/17/2023]
Abstract
Nowadays, foodborne pathogens and other food contaminants are among the major contributors to human illnesses and even deaths worldwide. There is a growing need for improvements in food safety globally. However, it is a challenge to detect and identify these harmful analytes in a rapid, sensitive, portable, and user-friendly manner. Recently, researchers have paid attention to the development of paper-based electrochemical biosensors due to their features and promising potential for food safety analysis. The use of paper in electrochemical biosensors offers several advantages such as device miniaturization, low sample consumption, inexpensive mass production, capillary force-driven fluid flow, and capability to store reagents within the pores of the paper substrate. Various paper-based electrochemical biosensors have been developed to enable the detection of foodborne pathogens and other contaminants that pose health hazards to humans. In this review, we discussed several aspects of the biosensors including different device designs (e.g., 2D and 3D devices), fabrication techniques, and electrode modification approaches that are often optimized to generate measurable signals for sensitive detection of analytes. The utilization of different nanomaterials for the modification of electrode surface to improve the detection of analytes via enzyme-, antigen/antibody-, DNA-, aptamer-, and cell-based bioassays is also described. Next, we discussed the current applications of the sensors to detect food contaminants such as foodborne pathogens, pesticides, veterinary drug residues, allergens, and heavy metals. Most of the electrochemical paper analytical devices (e-PADs) reviewed are small and portable, and therefore are suitable for field applications. Lastly, e-PADs are an excellent platform for food safety analysis owing to their user-friendliness, low cost, sensitivity, and a high potential for customization to meet certain analytical needs.
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Affiliation(s)
- Bambang Kuswandi
- Chemo and Biosensors Group, Faculty of Farmasi, University of Jember, Jember 68121, Indonesia
| | - Mochammad Amrun Hidayat
- Chemo and Biosensors Group, Faculty of Farmasi, University of Jember, Jember 68121, Indonesia
| | - Eka Noviana
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, Universitas Gadjah Mada, Yogyakarta 55281, Indonesia
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10
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Multiamperometric-SERS detection of melamine on gold screen-printed electrodes. J Electroanal Chem (Lausanne) 2022. [DOI: 10.1016/j.jelechem.2022.116478] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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11
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Hu T, Xu J, Shang M, Zhao Q, Cao Y. Photonic crystal sensor for melamine based on magnetic molecularly imprinted nanoparticles self-assembled with an amphiphilic random copolymer. Mikrochim Acta 2022; 189:215. [PMID: 35524922 DOI: 10.1007/s00604-022-05300-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2021] [Accepted: 03/28/2022] [Indexed: 10/18/2022]
Abstract
Magnetic molecularly imprinted nanoparticles (MMINPs) were obtained with a one-step process through miniemulsion self-assembly using an amphiphilic random copolymer as both an emulsifier and MMINP coating, oleic acid-modified magnetite nanoparticles as magnetic cores, and melamine (MEL) as the template molecule. MMINPs were assembled under an external magnetic field to construct photonic crystal (PC) sensor for naked-eye detection of MEL. The MMINPs were characterized by FT-IR, TEM, TGA, and VSM. The analytical performances of the magnetic molecularly imprinted PC sensor for MEL (MEL-MMIPCs) were investigated with respect to sensitivity, response time, selectivity, and stability. As the MEL concentration increases from 1.0 to 1.0 × 106 μg/l, the reflection wavelength of MEL-MMIPCs shifted from 497 to 709 nm, and was linear with the logarithm of MEL concentration in this range. The detection limit was 0.21 μg/l (S/N = 3) and response time was within 30 s. The MEL-MMIPC sensor had an imprinting factor of 5.09, and selectivity factors for the analogs cyanuric acid and atrazine were 8.76 and 5.75, respectively, indicating the high sensitivity and selectivity. After 10 cycles of elution/response, MEL-MMIPCs still had a good ability to recognize MEL.
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Affiliation(s)
- Tingyi Hu
- School of Chemical and Material Engineering, Jiangnan University, 1800 Lihu Road, Wuxi, 214122, China
| | - Jiasheng Xu
- School of Chemical and Material Engineering, Jiangnan University, 1800 Lihu Road, Wuxi, 214122, China
| | - Meng Shang
- School of Chemical and Material Engineering, Jiangnan University, 1800 Lihu Road, Wuxi, 214122, China
| | - Qiang Zhao
- School of Chemical and Material Engineering, Jiangnan University, 1800 Lihu Road, Wuxi, 214122, China
| | - Yuhua Cao
- School of Chemical and Material Engineering, Jiangnan University, 1800 Lihu Road, Wuxi, 214122, China.
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13
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Ceylan Cömert Ş, Özgür E, Uzun L, Odabaşı M. The creation of selective imprinted cavities on quartz crystal microbalance electrode for the detection of melamine in milk sample. Food Chem 2022; 372:131254. [PMID: 34818729 DOI: 10.1016/j.foodchem.2021.131254] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2021] [Revised: 09/20/2021] [Accepted: 09/26/2021] [Indexed: 11/04/2022]
Abstract
Molecularly imprinted polymer based nanofilms specific to melamine were synthesized on quartz crystal microbalance (QCM) electrode surface. Contact angle measurements, atomic force microscopy, ellipsometry and scanning electron microscopy were used for characterizations process. Some of the findings of the study are as follows: pH 6.0 was found as optimal working pH for melamine detection. Prepared MIP QCM electrode showed a linearity of 99.53% in the concentration range of 50-1000 ng/mL. Langmuir-Freundlich hybrid model was the best fitted isotherm for whole concentration range. The performance of MIP QCM electrode was also confirmed by determining of melamine in melamine spiked milk samples. As a conclusion, the results figured out that not only QCM nanosensor for specific melamine detection but also polymerization strategy were classified as an intriguing alternative for developing new melamine sensing platforms. Limit of detection (LOD) and limit of quantification (LOQ) were calculated as 2.3 ng/mL and 7.8 ng/mL, respectively.
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Affiliation(s)
| | - Erdoğan Özgür
- Hacettepe University, Advanced Technologies Application and Research Center, Ankara, Turkey
| | - Lokman Uzun
- Hacettepe University, Department of Chemistry, Ankara, Turkey.
| | - Mehmet Odabaşı
- Aksaray University, Department of Chemistry, Aksaray, Turkey.
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Hitabatuma A, Wang P, Su X, Ma M. Metal-Organic Frameworks-Based Sensors for Food Safety. Foods 2022; 11:foods11030382. [PMID: 35159532 PMCID: PMC8833942 DOI: 10.3390/foods11030382] [Citation(s) in RCA: 17] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2021] [Revised: 01/11/2022] [Accepted: 01/21/2022] [Indexed: 01/07/2023] Open
Abstract
Food contains a variety of poisonous and harmful substances that have an impact on human health. Therefore, food safety is a worldwide public concern. Food detection approaches must ensure the safety of food at every step of the food supply chain by monitoring and evaluating all hazards from every single step of food production. Therefore, early detection and determination of trace-level contaminants in food are one of the most crucial measures for ensuring food safety and safeguarding consumers’ health. In recent years, various methods have been introduced for food safety analysis, including classical methods and biomolecules-based sensing methods. However, most of these methods are laboratory-dependent, time-consuming, costly, and require well-trained technicians. To overcome such problems, developing rapid, simple, accurate, low-cost, and portable food sensing techniques is essential. Metal-organic frameworks (MOFs), a type of porous materials that present high porosity, abundant functional groups, and tunable physical and chemical properties, demonstrates promise in large-number applications. In this regard, MOF-based sensing techniques provide a novel approach in rapid and efficient sensing of pathogenic bacteria, heavy metals, food illegal additives, toxins, persistent organic pollutants (POPs), veterinary drugs, and pesticide residues. This review focused on the rapid screening of MOF-based sensors for food safety analysis. Challenges and future perspectives of MOF-based sensors were discussed. MOF-based sensing techniques would be useful tools for food safety evaluation owing to their portability, affordability, reliability, sensibility, and stability. The present review focused on research published up to 7 years ago. We believe that this work will help readers understand the effects of food hazard exposure, the effects on humans, and the use of MOFs in the detection and sensing of food hazards.
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Affiliation(s)
| | | | - Xiaoou Su
- Correspondence: ; Tel.: +86-82106577
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15
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Amalraj A, Narayanan M, Perumal P. Highly efficient peroxidase-like activity of a metal–oxide-incorporated CeO 2–MIL(Fe) metal–organic framework and its application in the colorimetric detection of melamine and mercury ions via induced hydrogen and covalent bonds. Analyst 2022; 147:3234-3247. [PMID: 35766241 DOI: 10.1039/d2an00864e] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The illegal addition of melamine to dairy products and the contamination of water with Hg2+ are serious threats to human health. This necessitates the search for new and efficient probe for detection of melamine in foods and Hg2+ in water samples.
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Affiliation(s)
- Arunjegan Amalraj
- Department of Chemistry, SRM Institute of Science and Technology, Kattankulathur, 603 203, Tamil Nadu, India
| | - Mariyammal Narayanan
- Department of Chemistry, SRM Institute of Science and Technology, Kattankulathur, 603 203, Tamil Nadu, India
| | - Panneerselvam Perumal
- Department of Chemistry, SRM Institute of Science and Technology, Kattankulathur, 603 203, Tamil Nadu, India
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16
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A Fluorescence-Based Chemical Sensor for Detection of Melamine in Aqueous Solutions. CHEMOSENSORS 2021. [DOI: 10.3390/chemosensors10010013] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Melamine, an industrial chemical, receives wide attention nowadays because of its unethical usage as a nitrogen enhancer in protein-rich foods and dairy products. Since most of the existing melamine detection methods are highly expensive and time-consuming, high sensitivity biosensor-based detection methods have arisen in the scientific literature as promising alternatives. This study reports the design, synthesis, and fluorescent investigations of a carbazole-based sensor (CB) for the detection of melamine in aqueous solutions. The titration studies and microplate experiments on a CB-cyanuric acid mixture (CB-CA) with melamine suggested that the novel sensor could detect melamine even at very low concentrations in both aqueous solutions and dairy samples.
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17
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Isachenko AI, Melekhin AO, Apyari VV, Volkov PA, Dmitrienko SG. Determination of Melamine by Diffuse Reflectance Spectroscopy by its Effect on the Formation of a Gold–Polyurethane Foam Nanocomposite. JOURNAL OF ANALYTICAL CHEMISTRY 2021. [DOI: 10.1134/s1061934821030060] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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18
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He F, Shen Y, Liu J. SYBR Green I promotes melamine binding to poly-thymine DNA and FRET-based ratiometric sensing. Analyst 2021; 146:1642-1649. [DOI: 10.1039/d1an00102g] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Using SYBR Green I for DNA melting experiments, polythymine DNA binding to melamine was found to be an intramolecular reaction, allowing the design of a FRET-based biosensor and its sensitivity was enhanced by SYBR Green I.
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Affiliation(s)
- Fan He
- College of Food Science
- Guangdong Provincial Key Laboratory of Food Quality and Safety
- South China Agricultural University
- Guangzhou 510642
- P. R. China
| | - Yudong Shen
- College of Food Science
- Guangdong Provincial Key Laboratory of Food Quality and Safety
- South China Agricultural University
- Guangzhou 510642
- P. R. China
| | - Juewen Liu
- Department of Chemistry
- Waterloo Institute for Nanotechnology
- University of Waterloo
- Waterloo
- Canada
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A Fluorescence Resonance Energy Transfer Biosensor Based on Graphene Quantum Dots and Protoporphyrin IX for the Detection of Melamine. J Fluoresc 2020; 30:1463-1468. [PMID: 32918651 DOI: 10.1007/s10895-020-02524-z] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/02/2020] [Accepted: 03/09/2020] [Indexed: 10/23/2022]
Abstract
Graphene quantum dots (GQDs), which have high photostability, anti-photobleaching and scintillation, good biocompatibility and low toxicity, are important member of the fluorescent material family, and have attracted extensive research interest. In this paper, a fluorescence resonance energy transfer (FRET) biosensor based on protoporphyrin IX (PpIX) and GQDs was developed for melamine detection. PpIX was bound to the surface of GQDs to produce self-assembled nanosensors, and a FRET process occurred between GQDs and PpIX. However, due to the combination of melamine and PpIX, the FRET process was shut down in the presence of melamine. The FRET system could quickly and accurately detect melamine with a detection range of 1.0 × 10-8 to 2.0 × 10-6 mol/L based on the fluorescence intensity ratio of PpIX and GQDs, and the detection limit was 3.6 × 10-9 mol/L. This method obtained satisfactory results when it was employed to the determination of melamine in milk samples.
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20
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Zheng G, Salamova A. Are Melamine and Its Derivatives the Alternatives for Per- and Polyfluoroalkyl Substance (PFAS) Fabric Treatments in Infant Clothes? ENVIRONMENTAL SCIENCE & TECHNOLOGY 2020; 54:10207-10216. [PMID: 32662267 DOI: 10.1021/acs.est.0c03035] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/26/2023]
Abstract
Per- and polyfluoroalkyl substances (PFAS) and melamine (MEL)-based compounds are used in textile finishing as grease, stain, and water repellents. Here, we investigated the occurrence of a large suite of PFAS and MEL compounds in 86 infant clothing items. The ∑MEL concentrations ranged from below the method detection limit to 250,000 ng/g with a median concentration of 78.2 ng/g, significantly higher (p < 0.05) than the ∑PFAS levels (1.22-203 ng/g; median 3.62 ng/g). MEL and its derivatives were most abundant in nylon clothes (median 32,800 ng/g), followed by organic cotton (median 6120 ng/g). In a simulated laundering experiment, the ∑MEL concentrations in clothing decreased on an average by ∼60 and 90% when washed in cool (20 °C) and warm (50 °C) water, respectively. This removal rate increased to 97% when the samples were washed with a detergent. The estimated daily intakes of MEL and PFAS through dermal absorption from nylon clothes were three orders of magnitude higher than those from the non-nylon clothes and decreased by more than half for washed clothes. Our findings demonstrate that MEL-based compounds are abundant in infant clothing and suggest that this group of compounds could be used as potential PFAS replacements in textile finishing.
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Affiliation(s)
- Guomao Zheng
- Paul H. O'Neill School of Public and Environmental Affairs, Indiana University, Bloomington, Indiana 47405 Unites States
| | - Amina Salamova
- Paul H. O'Neill School of Public and Environmental Affairs, Indiana University, Bloomington, Indiana 47405 Unites States
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21
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Wang J, Wu Y, Wu Q, Li L, Wang Y, Yang H. Highly sensitive detection of melamine in milk samples based on N-methylmesoporphyrin IX/G-quadruplex structure. Microchem J 2020. [DOI: 10.1016/j.microc.2020.104751] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
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22
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Zheng G, Boor BE, Schreder E, Salamova A. Exposure to melamine and its derivatives in childcare facilities. CHEMOSPHERE 2020; 244:125505. [PMID: 32050329 DOI: 10.1016/j.chemosphere.2019.125505] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/29/2019] [Revised: 11/22/2019] [Accepted: 11/27/2019] [Indexed: 06/10/2023]
Abstract
Melamine (MEL) and its derivatives are widely used in many consumer products, including furniture, kitchenware, and plastics. However, very limited knowledge exists on human exposure to MEL and its derivatives, especially in the indoor environment. Here, we determined the occurrence and distribution of 11 MEL derivatives in childcare facilities and estimated children's exposure through dust ingestion and dermal absorption. We analyzed dust and samples of nap mats, a commonly used item in many childcares, from eight facilities located in the United States. Eight MEL-based compounds were detected in dust, and total MEL concentrations ranged from 429 to 117,000 ng/g. The most abundant compounds found in the dust samples were MEL, cyanuric acid (CYA), ammeline (AMN), and ammelide (AMD), with median concentrations of 1620, 585, 1060, and 299 ng/g, respectively. MEL, CYA, AMN and 2,4,6-tris[bis(methoxymethyl)amino]-1,3,5-triazine (TBMMAT) were also detected in nap mats with median concentrations of 45.6, 19.8, 1510 and 2.5 ng/g, respectively. ΣMEL concentrations in mat covers (median 709 ng/g) were significantly higher than those in mat foam (median 15.1 ng/g). Estimated daily intakes (EDIs) of MEL and its derivatives via dust ingestion were two orders of magnitude higher than the EDIs through dermal absorption, but both were below the established tolerable daily intake levels. This is the first report on exposure to MEL and its derivatives in the childcare environment.
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Affiliation(s)
- Guomao Zheng
- O'Neill School of Public and Environmental Affairs, Indiana University, Bloomington, IN, 47405, USA
| | - Brandon E Boor
- Lyles School of Civil Engineering, Purdue University, 550 Stadium Mall Drive, West Lafayette, IN, 47907, USA; Ray W. Herrick Laboratories, Center for High Performance Buildings, Purdue University, 177 South Russell Street, West Lafayette, IN, 47907, USA
| | - Erika Schreder
- Toxic Free Future, 4649, Sunnyside Ave N., Suite 540, Seattle, WA, 98103, USA
| | - Amina Salamova
- O'Neill School of Public and Environmental Affairs, Indiana University, Bloomington, IN, 47405, USA.
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Zhu H, Kannan K. Determination of melamine and its derivatives in textiles and infant clothing purchased in the United States. THE SCIENCE OF THE TOTAL ENVIRONMENT 2020; 710:136396. [PMID: 31923697 DOI: 10.1016/j.scitotenv.2019.136396] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/06/2019] [Revised: 12/26/2019] [Accepted: 12/27/2019] [Indexed: 06/10/2023]
Abstract
Melamine-based resins are used extensively in fabrics to impart fire and heat resistance as well as wrinkle-free properties. Little is known, however, regarding the occurrence of melamine and its derivatives in textiles. In this study, concentrations of melamine, ammeline, ammelide, and cyanuric acid were determined in 77 textile samples and infant clothing purchased from Albany, New York, USA. All textile samples contained one or more target analytes, at concentration ranges of 1.19-81,800, 3.21-17,800, <1.20-25,700, and <0.50-550 ng/g for melamine, cyanuric acid, ammeline, and ammelide, respectively. Melamine was the predominant compound, accounting for 52% of the total concentrations of four analytes (i.e., ∑melamines). Significant positive correlations were found between the concentrations of melamine and its three derivatives (0.347 < r < 0.862, p < .01). The concentrations of ∑melamines were significantly higher in cotton fabrics (mean: 10,500 ng/g) and cotton clothes (10,200 ng/g) than in synthetic fabrics (1,380 ng/g) and socks (40.0 ng/g) (p < .01). Simulated laundry experiments suggested that a single round of washing with water removed 76-90% of melamine from clothing. The calculated dermal exposure doses of melamine and cyanuric acid were three to four orders of magnitude below the reference value. This study provides the first evidence of the occurrence of melamine derivatives in textiles and clothing purchased in the United States. CAPSULE: Melamine and cyanuric acid are widely distributed in textiles and infant clothing collected from the United States.
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Affiliation(s)
- Hongkai Zhu
- Wadsworth Center, New York State Department of Health, Empire State Plaza, P.O. Box 509, Albany, NY 12201-0509, United States
| | - Kurunthachalam Kannan
- Wadsworth Center, New York State Department of Health, Empire State Plaza, P.O. Box 509, Albany, NY 12201-0509, United States; Biochemistry Department, Faculty of Science and Experimental Biochemistry Unit, King Fahd Medical Research Center, King Abdulaziz University, Jeddah 22254, Saudi Arabia; Department of Pediatrics, New York University School of Medicine, New York, NY 10016, United States.
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24
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Beganović A, Nuener T, Meischl F, Stuppner SE, Rainer M, Bonn GK, Huck CW. Quantification of melamine in infant formula using a handheld Raman spectrometer – Performance boost with customized Arduino-controlled rotation setup. Talanta 2020; 209:120488. [DOI: 10.1016/j.talanta.2019.120488] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2019] [Revised: 10/17/2019] [Accepted: 10/21/2019] [Indexed: 01/25/2023]
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25
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Regasa MB, Soreta TR, Femi OE, Ramamurthy PC, Kumar S. Molecularly imprinted polyaniline molecular receptor–based chemical sensor for the electrochemical determination of melamine. J Mol Recognit 2020; 33:e2836. [DOI: 10.1002/jmr.2836] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2019] [Revised: 12/21/2019] [Accepted: 12/27/2019] [Indexed: 12/17/2022]
Affiliation(s)
- Melkamu B. Regasa
- School of Materials Science and EngineeringJimma Institute of Technology, Jimma University Jimma Ethiopia
| | - Tesfaye R. Soreta
- Department of Materials EngineeringAddis Ababa Institute of Technology, Addis Ababa University Addis Ababa Ethiopia
| | - Olu E. Femi
- School of Materials Science and EngineeringJimma Institute of Technology, Jimma University Jimma Ethiopia
| | | | - Saravana Kumar
- Department of Materials EngineeringIndian Institute of Science Bengaluru India
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26
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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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27
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Chen J, Qiu H, Zhao S. Fabrication of chemiluminescence resonance energy transfer platform based on nanomaterial and its application in optical sensing, biological imaging and photodynamic therapy. Trends Analyt Chem 2020. [DOI: 10.1016/j.trac.2019.115747] [Citation(s) in RCA: 34] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
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28
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Xiao G, Li L, Yan A, He X. Direct detection of melamine in infant formula milk powder solution based on SERS effect of silver film over nanospheres. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2019; 223:117269. [PMID: 31247461 DOI: 10.1016/j.saa.2019.117269] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/23/2019] [Revised: 06/04/2019] [Accepted: 06/10/2019] [Indexed: 06/09/2023]
Abstract
A direct and sensitive method to detect melamine in infant formula milk powder solution based on the SERS effect of silver film over nanospheres (AgFON) was developed. AgFON was prepared by vacuum magnetron sputtering and dip-coating methods. The surface morphology and roughness were characterized by using scanning electron microscope and atomic force microscope. AgFON was used as a substrate to detect the SERS spectra of melamine in infant formula milk powder solution directly without any pretreatments. Semi-quantitative analyses of melamine with various concentrations in milk powder solution were carried out. A good linearity with correlation coefficient of 0.9926 between peak intensity and concentration was obtained from 2 to 25 mg/L. Furthermore, the as-prepared AgFON substrate had good uniformity with relative standard deviation value of 5.56% collected from ten randomly selected positions. The electric field distribution of AgFON was simulated by finite difference time domain solution, which revealed that the huge enhancement of Raman signals was ascribed to the high-density hot spots of the substrate.
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Affiliation(s)
- Guina Xiao
- Department of Physics, Shanghai Normal University, Shanghai 200234, PR China.
| | - Ling Li
- Department of Physics, Shanghai Normal University, Shanghai 200234, PR China
| | - Aimin Yan
- Department of Physics, Shanghai Normal University, Shanghai 200234, PR China
| | - Xiaoyong He
- Department of Physics, Shanghai Normal University, Shanghai 200234, PR China
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30
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Roland RM, Bhawani SA, Wahi R, Ibrahim MNM. Synthesis, characterization, and application of molecular imprinting polymer for extraction of melamine from spiked milk, water, and blood serum. J LIQ CHROMATOGR R T 2019. [DOI: 10.1080/10826076.2019.1672077] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Affiliation(s)
- Rachel Marcella Roland
- Faculty of Resource Science and Technology, Department of Chemistry, Universiti Malaysia Sarawak (UNIMAS), Kota Samarahan, Malaysia
| | - Showkat Ahmad Bhawani
- Faculty of Resource Science and Technology, Department of Chemistry, Universiti Malaysia Sarawak (UNIMAS), Kota Samarahan, Malaysia
| | - Rafeah Wahi
- Faculty of Resource Science and Technology, Department of Chemistry, Universiti Malaysia Sarawak (UNIMAS), Kota Samarahan, Malaysia
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31
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Sushma U, Srivastava AK, Krishnan MH. Melamine Detection in Food matrices employing Chicken Antibody (IgY): A Comparison between Colorimetric and Chemiluminescent Methods. CURR ANAL CHEM 2019. [DOI: 10.2174/1573411015666181205120323] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Background:Melamine, contains 67% nitrogen by mass, and is adulterated in foods to uplift false protein. There is an urgent requirement to develop fast screening techniques for monitoring melamine in foods.Objective:To develop rapid, high throughput detection techniques for melamine in the food matrix.Methods:IgY antibodies were developed against melamine in the hen, isolated and used for detection of melamine. The detection by colorimetric and chemiluminescent methods was compared.Results:The detection range for melamine was 1 ng-25 µg by the colorimetric method and 10 fg/mL-25 ng/mL by the chemiluminescent method. There was a very low matrix effect, where the recovery was 86 to 106 % by colorimetric method and 71 to 98 % by the chemiluminescent method.Conclusion:Both colorimetric and chemiluminescent methods could be employed for the fast and consistent melamine detection in the food matrix.
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Affiliation(s)
- Umesh Sushma
- Food Protectants and Infestation Control Department, CSIR-Central Food Technological Research Institute, Mysore, 570 020, Karnataka, India
| | - Alok K. Srivastava
- Food Safety and Analytical Quality Control Department, CSIR-Central Food Technological Research Institute, Mysore, 570 020, Karnataka, India
| | - Manonmani H. Krishnan
- Food Protectants and Infestation Control Department, CSIR-Central Food Technological Research Institute, Mysore, 570 020, Karnataka, India
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32
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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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Abstract
Illegal adulteration of milk products by melamine and its analogs has become a threat to the world. In 2008, the misuse of melamine with infant formula caused serious effects on babies of China. Thereafter, the government of China and the US Food and Drug Administration (FDA) limited the use of melamine of 1 mg/kg for infant formula and 2.5 mg/kg for other dairy products. Similarly, the World Health Organization (WHO) has also limited the daily intake of melamine of 0.2 mg/kg body weight per day. Many sensory schemes have been proposed by the scientists for carrying out screening on melamine poisoning. Among them, nanomaterial-based sensing techniques are very promising in terms of real-time applicability. These materials uncover and quantify the melamine by means of diverse mechanisms, such as fluorescence resonance energy transfer (FRET), aggregation, inner filter effect, surface-enhanced Raman scattering (SERS), and self-assembly, etc. Nanomaterials used for the melamine determination include carbon dots, quantum dots, nanocomposites, nanocrystals, nanoclusters, nanoparticles, nanorods, nanowires, and nanotubes. In this review, we summarize and comment on the melamine sensing abilities of these nanomaterials for their suitability and future research directions.
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Rahman MM, Balkhoyor HB, Asiri AM. Removal of a melamine contaminant with Ag-doped ZnO nanocomposite materials. NEW J CHEM 2019. [DOI: 10.1039/c9nj04638k] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
In this approach, Ag-doped ZnO nanosheets (Ag/ZnO NSs) were prepared via a facile wet-chemical method using reducing agents in an alkaline medium at a low temperature.
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Affiliation(s)
- Mohammed M. Rahman
- Chemistry Department
- Faculty of Science
- King Abdulaziz University
- Jeddah 21589
- Saudi Arabia
| | - Hasan B. Balkhoyor
- Chemistry Department
- Faculty of Science
- King Abdulaziz University
- Jeddah 21589
- Saudi Arabia
| | - Abdullah M. Asiri
- Chemistry Department
- Faculty of Science
- King Abdulaziz University
- Jeddah 21589
- Saudi Arabia
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35
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Zhu H, Kannan K. Distribution Profiles of Melamine and Its Derivatives in Indoor Dust from 12 Countries and the Implications for Human Exposure. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2018; 52:12801-12808. [PMID: 30274520 DOI: 10.1021/acs.est.8b04154] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Melamine and its derivatives (i.e., ammeline, ammelide, and cyanuric acid) are extensively used in household products, such as furniture, dinnerware, and food utensils. Nevertheless, limited information is available on human exposures, other than dietary sources, to melamine and its derivatives. In this study, the occurrence of melamine and its derivatives was determined, for the first time, in 341 samples of indoor dust, collected from 12 countries. All of the dust samples contained target analytes, with global median concentrations of 1800, 1100, 48, and 45 ng/g for melamine, cyanuric acid, ammelide, and ammeline, respectively. The total concentrations of melamine and its derivatives varied among countries in the following decreasing order: United States (median: 17 000 ng/g) > Japan (8400) > China (8000) > South Korea (7300) > Saudi Arabia (4400) > Romania (4300) > Greece (3400) > Kuwait (2400) > Vietnam (2300) > Colombia (1300) > Pakistan (820) > India (430). Correlation analysis indicated the existence of multiple and varied sources for melamine and cyanuric acid. Estimated daily intakes of melamine via indoor dust ingestion were at least 2 orders of magnitude below the current tolerable daily intake.
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Affiliation(s)
- Hongkai Zhu
- Wadsworth Center, New York State Department of Health, and Department of Environmental Health Sciences, School of Public Health , State University of New York at Albany , Empire State Plaza , P.O. Box 509, Albany , New York 12201-0509 , United States
| | - Kurunthachalam Kannan
- Wadsworth Center, New York State Department of Health, and Department of Environmental Health Sciences, School of Public Health , State University of New York at Albany , Empire State Plaza , P.O. Box 509, Albany , New York 12201-0509 , United States
- Biochemistry Department, Faculty of Science and Experimental Biochemistry Unit, King Fahd Medical Research Center , King Abdulaziz University , Jeddah 21589 , Saudi Arabia
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36
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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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37
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Fu Y, Jin H, Bu X, Gui R. Melamine-Induced Decomposition and Anti-FRET Effect from a Self-Assembled Complex of Rhodamine 6G and DNA-Stabilized Silver Nanoclusters Used for Dual-Emitting Ratiometric and Naked-Eye-Visible Fluorescence Detection. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2018; 66:9819-9827. [PMID: 30160493 DOI: 10.1021/acs.jafc.8b03402] [Citation(s) in RCA: 39] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
In this work, blue-emitting silver nanoclusters (AgNCs) were prepared in a matrix of single-stranded deoxyribonucleic acid (DNA) on the basis of ambient hydrothermal reactions. DNA acted as the stabilizer or coating agent, and NaBH4 was used as the reducing agent. Through the interactions between rhodamine 6G (Rh6G) and the synthesized DNA-AgNCs, the self-assembled complex of DNA-AgNC-Rh6G was generated. Meanwhile, fluorescence emission of AgNCs was weakened as a result of fluorescence-resonance-energy transfer (FRET) from AgNCs (donor) to Rh6G (acceptor). In the DNA-AgNC-Rh6G complex aqueous suspension, the addition of melamine induced obvious emission recovery of AgNCs and fluorescence decrease of Rh6G, attributable to melamine-induced decomposition of the self-assembled complex and anti-FRET effects. There was a well-plotted linear relationship of ratiometric fluorescence intensities ( IAgNCs/ IRh6G) versus melamine concentration in the range of 0.1-10 μM, with a low detection limit of 25 nM. Responses of IAgNCs/ IRh6G to melamine were highly selective and sensitive over potential interferents. A novel dual-emitting ratiometric fluorescence sensor of melamine was facilely constructed on the basis of the DNA-AgNC-Rh6G complex. In particular, the sensor enabled visual fluorescence detection of melamine both in aqueous solution and on wetted filter paper. Superior detection results of the sensor were experimentally obtained and confirmed its high feasibility for melamine detection in practical samples.
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Affiliation(s)
- Yongxin Fu
- College of Chemistry and Chemical Engineering, Shandong Sino-Japanese Center for Collaborative Research of Carbon Nanomaterials, Laboratory of Fiber Materials and Modern Textile, The Growing Base for State Key Laboratory , Qingdao University , Shandong 266071 , PR China
| | - Hui Jin
- College of Chemistry and Chemical Engineering, Shandong Sino-Japanese Center for Collaborative Research of Carbon Nanomaterials, Laboratory of Fiber Materials and Modern Textile, The Growing Base for State Key Laboratory , Qingdao University , Shandong 266071 , PR China
| | - Xiangning Bu
- College of Chemistry and Chemical Engineering, Shandong Sino-Japanese Center for Collaborative Research of Carbon Nanomaterials, Laboratory of Fiber Materials and Modern Textile, The Growing Base for State Key Laboratory , Qingdao University , Shandong 266071 , PR China
| | - Rijun Gui
- College of Chemistry and Chemical Engineering, Shandong Sino-Japanese Center for Collaborative Research of Carbon Nanomaterials, Laboratory of Fiber Materials and Modern Textile, The Growing Base for State Key Laboratory , Qingdao University , Shandong 266071 , PR China
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38
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Yang H, Wang J, Wu Q, Wang Y, Li L, Ding B. Simple and Label-Free Fluorescent Detection of Melamine Based on Melamine⁻Thymine Recognition. SENSORS 2018; 18:s18092968. [PMID: 30200586 PMCID: PMC6163348 DOI: 10.3390/s18092968] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/31/2018] [Revised: 08/28/2018] [Accepted: 09/02/2018] [Indexed: 01/19/2023]
Abstract
In the past few years, melamine has been illegally added into dairy products to increase the apparent crude protein levels. If humans or animals drink the milk adulteration of melamine, it can form insoluble melamine–cyanurate crystals in their kidneys which causes kidney damage or even death. In the present work, we constructed a simple and label-free fluorescent method for melamine detection based on melamine-thymine recognition. SYBR Green I was utilized as a reporter for this method as it did not require any modification or expensive equipment. In the absence of melamine, polythymine DNA was digested by Exo I, which caused a decrease in the fluorescence signal. In the presence of melamine, the polythymine DNA was able to fold into a double chain structure, however this was done with the help of T-melamine-T mismatches to prevent degradation. Then, the SYBR Green I combined with the double-stranded DNA to result in an intense fluorescence signal. The limit of detection in this method was 1.58 μM, which satisfied the FDA standards. This method also had a good linear relationship within the range of 10–200 μM. In addition, this new method has a good selectivity to distinguish melamine from the component of milk. As a result, we developed a simple and highly selectivity method for melamine detection.
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Affiliation(s)
- Hualin Yang
- Edible and Medicinal Fungi Research Center, Yangtze University, Jingzhou 434025, China.
- College of Life Science, Yangtze University, Jingzhou 434025, China.
| | - Jiujun Wang
- College of Life Science, Yangtze University, Jingzhou 434025, China.
| | - Qinghua Wu
- College of Life Science, Yangtze University, Jingzhou 434025, China.
| | - Yun Wang
- Edible and Medicinal Fungi Research Center, Yangtze University, Jingzhou 434025, China.
- College of Life Science, Yangtze University, Jingzhou 434025, China.
| | - Li Li
- College of Life Science, Yangtze University, Jingzhou 434025, China.
| | - Baomiao Ding
- College of Life Science, Yangtze University, Jingzhou 434025, China.
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Xu S, Lin G, Zhao W, Wu Q, Luo J, Wei W, Liu X, Zhu Y. Necklace-like Molecularly Imprinted Nanohybrids Based on Polymeric Nanoparticles Decorated Multiwalled Carbon Nanotubes for Highly Sensitive and Selective Melamine Detection. ACS APPLIED MATERIALS & INTERFACES 2018; 10:24850-24859. [PMID: 29975052 DOI: 10.1021/acsami.8b08558] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/18/2023]
Abstract
In this study, molecularly imprinted nanohybrids with "necklace-like" nanostructures were developed based on self-assembled polymeric nanoparticles decorated multiwalled carbon nanotubes (MWCNTs) by employing melamine as template molecules. An amphiphilic copolymer poly(acrylic acid- co-(7-(4-vinylbenzyloxy)-4-methyl coumarin)- co-ethylhexyl acrylate) (poly(AA- co-VMc- co-EHA), PAVE) containing photosensitive coumarin units was synthesized first. Then, the PAVE copolymers were co-assembled with MWCNTs in the presence of template molecules, generating photosensitive molecularly imprinted nanohybrids (MIP-MWCNTs) with necklace-like structures. Subsequently, the MIP-MWCNTs nanohybrids were used to modify electrode surface followed by photo-polymerization of the coumarin units in the nanohybrids, leading to a network architectured complex film. After extracting melamine molecules by electrolysis, a melamine MIP sensor was successfully developed. The as-prepared sensor exhibited a significantly wide linear range (1.0 × 10-12-1.0 × 10-6 mol L-1) and a low detection limit (5.6 × 10-13 mol L-1) for melamine detection. High selectivity of the sensor toward melamine was well demonstrated with respect to other melamine analogues and interferents. Furthermore, the MIP sensor showed high stability and reproducibility. The excellent performance of the MIP sensor can be attributed to the unique nanostructure of the complex film provided by these necklace-like nanohybrids. On the one hand, the nanosized polymeric MIP nanoparticles along the MWCNTs increase the effective electrode surface area and thus offer a high melamine-binding capacity. On the other hand, the MWCNTs in MIP-MWCNTs nanohybrids serve as "electronic bridges" to accelerate the electron transfer among the complex MIP film. More importantly, the MIP sensor was practically used to monitor melamine in milk samples, demonstrating a promising feature for applications in the analysis of food like milk and other food products including milk powder, infant formula, and animal feed. Considering the ease of polymeric nanoparticles functionalization, the necklace-like nanohybrids would be extended to wider applications in many other sensors and devices.
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Affiliation(s)
- Sheng Xu
- Key Laboratory of Synthetic and Biological Colloids, Ministry of Education, School of Chemical and Material Engineering , Jiangnan University , Wuxi 214122 , Jiangsu Province , P. R. China
| | - Geyu Lin
- Key Laboratory of Synthetic and Biological Colloids, Ministry of Education, School of Chemical and Material Engineering , Jiangnan University , Wuxi 214122 , Jiangsu Province , P. R. China
| | - Wei Zhao
- Key Laboratory of Synthetic and Biological Colloids, Ministry of Education, School of Chemical and Material Engineering , Jiangnan University , Wuxi 214122 , Jiangsu Province , P. R. China
| | - Qian Wu
- Key Laboratory of Synthetic and Biological Colloids, Ministry of Education, School of Chemical and Material Engineering , Jiangnan University , Wuxi 214122 , Jiangsu Province , P. R. China
| | - Jing Luo
- Key Laboratory of Synthetic and Biological Colloids, Ministry of Education, School of Chemical and Material Engineering , Jiangnan University , Wuxi 214122 , Jiangsu Province , P. R. China
| | - Wei Wei
- Key Laboratory of Synthetic and Biological Colloids, Ministry of Education, School of Chemical and Material Engineering , Jiangnan University , Wuxi 214122 , Jiangsu Province , P. R. China
| | - Xiaoya Liu
- Key Laboratory of Synthetic and Biological Colloids, Ministry of Education, School of Chemical and Material Engineering , Jiangnan University , Wuxi 214122 , Jiangsu Province , P. R. China
| | - Ye Zhu
- Key Laboratory of Synthetic and Biological Colloids, Ministry of Education, School of Chemical and Material Engineering , Jiangnan University , Wuxi 214122 , Jiangsu Province , P. R. China
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40
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Karthikraj R, Bollapragada R, Kannan K. Melamine and its derivatives in dog and cat urine: An exposure assessment study. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2018; 238:248-254. [PMID: 29567446 DOI: 10.1016/j.envpol.2018.02.089] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/22/2018] [Revised: 02/26/2018] [Accepted: 02/28/2018] [Indexed: 06/08/2023]
Abstract
Melamine is a nitrogen-containing organic compound that is used in a wide range of products, including paints, plastics, and paper, as a flame retardant. A few studies have reported the occurrence of melamine and its derivatives in pet food, following a number of deaths of cats and dogs from kidney failure in 2007, which was attributed to melamine contamination in ingredients used in pet food. Nevertheless, studies that report the occurrence of melamine and its derivatives in pet urine are scarce. In this study, we measured melamine and its derivatives (i.e., ammeline, ammelide, and cyanuric acid) in dog (n = 30) and cat (n = 30) urine collected from Albany, New York, USA, during March through July 2017. The mean (±SD) concentrations of melamine, ammeline, ammelide, and cyanuric acid in dog urine were 21.1 ± 51.2, 2.3 ± 3.8, 9.9 ± 1 0.4, and 79.0 ± 105 ng/mL, respectively; the corresponding concentrations in cats were 21.4 ± 26.1, 1.2 ± 2.5, 6.1 ± 3.9, and 105 ± 94.6 ng/mL, respectively. No significant difference was observed in urinary concentrations of melamine derivatives between cats and dogs. Age and gender were important determinants of the concentrations of the target chemicals in cats and dogs. Cumulative daily intake of melamine and its derivatives was calculated on the basis of urinary concentrations and was found to be 10-500-fold below the tolerable daily intake.
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Affiliation(s)
- Rajendiran Karthikraj
- Wadsworth Center, New York State Department of Health, Empire State Plaza, P.O. Box 509, Albany, NY, 12201-0509, United States
| | - Rasya Bollapragada
- Wadsworth Center, New York State Department of Health, Empire State Plaza, P.O. Box 509, Albany, NY, 12201-0509, United States
| | - Kurunthachalam Kannan
- Wadsworth Center, New York State Department of Health, Empire State Plaza, P.O. Box 509, Albany, NY, 12201-0509, United States; Department of Environmental Health Sciences, School of Public Health, State University of New York at Albany, Albany, NY, 12201-0509, United States; Biochemistry Department, Faculty of Science and Experimental Biochemistry Unit, King Fahd Medical Research Center, King Abdulaziz University, Jeddah, 21589, Saudi Arabia.
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41
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Hashemi M, Nazari Z. Preparation of molecularly imprinted polymer based on the magnetic multiwalled carbon nanotubes for selective separation and spectrophotometric determination of melamine in milk samples. J Food Compost Anal 2018. [DOI: 10.1016/j.jfca.2018.02.010] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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42
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Transport of melamine by a new generation of nano-material membranes containing carbon nanotubes and determination with surface plasmon resonance. INNOV FOOD SCI EMERG 2018. [DOI: 10.1016/j.ifset.2017.07.003] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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43
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Detection of Cyanuric Acid and Melamine in Infant Formula Powders by Mid-FTIR Spectroscopy and Multivariate Analysis. J FOOD QUALITY 2018. [DOI: 10.1155/2018/7926768] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
Chemometric methods using mid-FTIR spectroscopy were developed in order to reduce the time of study of melamine and cyanuric acid in infant formulas. Chemometric models were constructed using the algorithms Partial Least Squares (PLS1, PLS2) and Principal Component Regression (PCR) in order to correlate the IR signal with the levels of melamine or cyanuric acid in the infant formula samples. Results showed that the best correlations were obtained using PLS1 (R2: 0.9998, SEC: 0.0793, and SEP: 0.5545 for melamine and R2: 0.9997, SEC: 0.1074, and SEP: 0.5021 for cyanuric acid). Also, the SIMCA model was studied to distinguish between adulterated formulas and nonadulterated samples, giving optimum discrimination and good interclass distances between samples. Results showed that chemometric models demonstrated a good predictive ability of melamine and cyanuric acid concentrations in infant formulas, showing that this is a rapid and accurate technique to be used in the identification and quantification of these adulterants in infant formulas.
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44
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Melamine Detection in Milk and Dairy Products: Traditional Analytical Methods and Recent Developments. FOOD ANAL METHOD 2017. [DOI: 10.1007/s12161-017-0984-1] [Citation(s) in RCA: 31] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
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45
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Extraction of melamine from milk using a magnetic molecularly imprinted polymer. Food Chem 2017; 227:85-92. [DOI: 10.1016/j.foodchem.2016.12.090] [Citation(s) in RCA: 54] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2016] [Revised: 12/12/2016] [Accepted: 12/27/2016] [Indexed: 11/19/2022]
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46
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A Fast and Cost-Effective Detection of Melamine by Surface Enhanced Raman Spectroscopy Using a Novel Hydrogen Bonding-Assisted Supramolecular Matrix and Gold-Coated Magnetic Nanoparticles. APPLIED SCIENCES-BASEL 2017. [DOI: 10.3390/app7050475] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
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47
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Henn R, Kirchler CG, Grossgut ME, Huck CW. Comparison of sensitivity to artificial spectral errors and multivariate LOD in NIR spectroscopy – Determining the performance of miniaturizations on melamine in milk powder. Talanta 2017; 166:109-118. [DOI: 10.1016/j.talanta.2017.01.035] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2016] [Revised: 01/09/2017] [Accepted: 01/12/2017] [Indexed: 10/20/2022]
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48
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Sensitive determination of melamine in milk and powdered infant formula samples by high-performance liquid chromatography using dabsyl chloride derivatization followed by dispersive liquid–liquid microextraction. Food Chem 2017; 221:139-146. [DOI: 10.1016/j.foodchem.2016.10.002] [Citation(s) in RCA: 36] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2016] [Revised: 09/08/2016] [Accepted: 10/02/2016] [Indexed: 11/21/2022]
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49
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Bates F, Busato M, Piletska E, Whitcombe MJ, Karim K, Guerreiro A, del Valle M, Giorgetti A, Piletsky S. Computational design of molecularly imprinted polymer for direct detection of melamine in milk. SEP SCI TECHNOL 2017. [DOI: 10.1080/01496395.2017.1287197] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Affiliation(s)
- Ferdia Bates
- Sensors and Biosensors Group, Department of Chemistry, Universitat Autònoma de Barcelona, Bellaterra, Spain
| | - Mirko Busato
- Department of Biotechnology, University of Verona, Verona, Italy
| | - Elena Piletska
- Chemical Biology, Department of Chemistry, University of Leicester, Leicester, UK
| | - Michael J. Whitcombe
- Chemical Biology, Department of Chemistry, University of Leicester, Leicester, UK
| | - Kal Karim
- Chemical Biology, Department of Chemistry, University of Leicester, Leicester, UK
| | - Antonio Guerreiro
- Chemical Biology, Department of Chemistry, University of Leicester, Leicester, UK
| | - Manel del Valle
- Sensors and Biosensors Group, Department of Chemistry, Universitat Autònoma de Barcelona, Bellaterra, Spain
| | | | - Sergey Piletsky
- Chemical Biology, Department of Chemistry, University of Leicester, Leicester, UK
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50
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Chen T, Xu Y, Peng Z, Li A, Liu J. Simultaneous Enhancement of Bioactivity and Stability of Laccase by Cu 2+/PAA/PPEGA Matrix for Efficient Biosensing and Recyclable Decontamination of Pyrocatechol. Anal Chem 2017; 89:2065-2072. [PMID: 28208260 DOI: 10.1021/acs.analchem.6b04691] [Citation(s) in RCA: 42] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
Simultaneously enhancing the catalytic bioactivity and stability of enzyme is still an intractable issue in the enzymatic study. Herein, a facile and effective approach was designed to immobilize and modify laccase on a Cu2+-adsorbed pyrene-terminated block copolymer [poly(acrylic acid)/poly(poly(ethylene glycol) acrylate)] (PAA/PPEGA), which was prepared via well-controlled reversible addition-fragmentation chain transfer polymerization. PAA provided the supporting matrix for firm immobilization of Cu2+, an enzyme bioactivity inducer, onto the microstructure of laccase, while avoiding any contamination of the heavy metal Cu2+ into the following application system. The water-soluble, biocompatible, and nontoxic PPEGA was used as an ideal modifier to improve the laccase stability. Accordingly, the modified laccase exhibited enhanced catalytic bioactivity and stability simultaneously to 447% and 237%, respectively. The modified laccase was immobilized on the highly oriented pyrolytic graphite surface and large-area graphene papers through π-π stacking interactions between the pyrene moiety of PAA/PPEGA and the π-conjugated graphenelike surface. The as-prepared portable solid-state electrochemical laccase biosensor showed lowest detection limit of 50 nM (S/N ≥ 3) and long-term stability for pyrocatechol detection. Besides, the laccase immobilization on graphene paper provided efficient pyrocatechol decontamination platform with convenience and recyclability, which could retain the laccase bioactivity of 176% after 8 consecutive operations.
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Affiliation(s)
- Tao Chen
- Center for Micro/Nano Luminescent and Electrochemical Materials, College of Materials Science and Engineering; Institute for Graphene Applied Technology Innovation; Laboratory of Fiber Materials and Modern Textiles, the Growing Base for State Key Laboratory; Collaborative Innovation Center for Marine Biomass Fibers Materials and Textiles of Shandong Province, Qingdao University , Qingdao 266071, China
| | - Yuanhong Xu
- Center for Micro/Nano Luminescent and Electrochemical Materials, College of Materials Science and Engineering; Institute for Graphene Applied Technology Innovation; Laboratory of Fiber Materials and Modern Textiles, the Growing Base for State Key Laboratory; Collaborative Innovation Center for Marine Biomass Fibers Materials and Textiles of Shandong Province, Qingdao University , Qingdao 266071, China
| | - Zhi Peng
- Center for Micro/Nano Luminescent and Electrochemical Materials, College of Materials Science and Engineering; Institute for Graphene Applied Technology Innovation; Laboratory of Fiber Materials and Modern Textiles, the Growing Base for State Key Laboratory; Collaborative Innovation Center for Marine Biomass Fibers Materials and Textiles of Shandong Province, Qingdao University , Qingdao 266071, China
| | - Aihua Li
- Center for Micro/Nano Luminescent and Electrochemical Materials, College of Materials Science and Engineering; Institute for Graphene Applied Technology Innovation; Laboratory of Fiber Materials and Modern Textiles, the Growing Base for State Key Laboratory; Collaborative Innovation Center for Marine Biomass Fibers Materials and Textiles of Shandong Province, Qingdao University , Qingdao 266071, China
| | - Jingquan Liu
- Center for Micro/Nano Luminescent and Electrochemical Materials, College of Materials Science and Engineering; Institute for Graphene Applied Technology Innovation; Laboratory of Fiber Materials and Modern Textiles, the Growing Base for State Key Laboratory; Collaborative Innovation Center for Marine Biomass Fibers Materials and Textiles of Shandong Province, Qingdao University , Qingdao 266071, China
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