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Lee K, Ha SM, Gurudatt NG, Heo W, Hyun KA, Kim J, Jung HI. Machine learning-powered electrochemical aptasensor for simultaneous monitoring of di(2-ethylhexyl) phthalate and bisphenol A in variable pH environments. JOURNAL OF HAZARDOUS MATERIALS 2024; 462:132775. [PMID: 37865074 DOI: 10.1016/j.jhazmat.2023.132775] [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: 07/22/2023] [Revised: 09/19/2023] [Accepted: 10/11/2023] [Indexed: 10/23/2023]
Abstract
Plastic waste is a pernicious environmental pollutant that threatens ecosystems and human health by releasing contaminants including di(2-ethylhexyl) phthalate (DEHP) and bisphenol A (BPA). Therefore, a machine-learning (ML)-powered electrochemical aptasensor was developed in this study for simultaneously detecting DEHP and BPA in river waters, particularly to minimize the electrochemical signal errors caused by varying pH levels. The aptasensor leverages a straightforward and effective surface modification strategy featuring gold nanoflowers to achieve low detection limits for DEHP and BPA (0.58 and 0.59 pg/mL, respectively), excellent specificity, and stability. The least-squares boosting (LSBoost) algorithm was introduced to reliably monitor the targets regardless of pH; it employs a layer that adjusts the number of multi-indexes and the parallel learning structure of an ensemble model to accurately predict concentrations by preventing overfitting and enhancing the learning effect. The ML-powered aptasensor successfully detected targets in 12 river sites with diverse pH values, exhibiting higher accuracy and reliability. To our knowledge, the platform proposed in this study is the first attempt to utilize ML for the simultaneous assessment of DEHP and BPA. This breakthrough allows for comprehensive investigations into the effects of contamination originating from diverse plastics by eliminating external interferent-caused influences.
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Affiliation(s)
- Kyungyeon Lee
- Department of Mechanical Engineering, Yonsei University, Seoul 03722, Republic of Korea; Department of Medical Engineering, College of Medicine, Yonsei University, Seoul 03722, Republic of Korea
| | - Seong Min Ha
- Department of Mechanical Engineering, Yonsei University, Seoul 03722, Republic of Korea
| | - N G Gurudatt
- Department of Mechanical Engineering, Yonsei University, Seoul 03722, Republic of Korea
| | - Woong Heo
- Department of Mechanical Engineering, Yonsei University, Seoul 03722, Republic of Korea
| | - Kyung-A Hyun
- Department of Mechanical Engineering, Yonsei University, Seoul 03722, Republic of Korea; Korea Electronics Technology Institute (KETI), 25 Saenari-ro, Bundang-gu, Seongnam-si, Gyeonggi-do, 13509, Republic of Korea
| | - Jayoung Kim
- Department of Medical Engineering, College of Medicine, Yonsei University, Seoul 03722, Republic of Korea
| | - Hyo-Il Jung
- Department of Mechanical Engineering, Yonsei University, Seoul 03722, Republic of Korea; The DABOM Inc., Seoul, 50 Yonsei-ro, Seodaemun-gu, Seoul, 03722, Republic of Korea.
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2
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Kunene K, Sayegh S, Weber M, Sabela M, Voiry D, Iatsunskyi I, Coy E, Kanchi S, Bisetty K, Bechelany M. Smart electrochemical immunosensing of aflatoxin B1 based on a palladium nanoparticle-boron nitride-coated carbon felt electrode for the wine industry. Talanta 2023. [DOI: 10.1016/j.talanta.2022.124000] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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3
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Afsharipour R, Haji Shabani AM, Dadfarnia S. A selective off–on fluorescent aptasensor for alpha-fetoprotein determination based on N-carbon quantum dots and oxidized nanocellulose. J Photochem Photobiol A Chem 2022. [DOI: 10.1016/j.jphotochem.2022.113872] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
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Chokkareddy R, Redhi GG. Fe
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Nanorods‐RGO‐ionic Liquid Nanocomposite Based Electrochemical Sensor for Aflatoxin B1 in Ground Paprika. ELECTROANAL 2021. [DOI: 10.1002/elan.202100377] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- Rajasekhar Chokkareddy
- Department of Chemistry Durban University of Technology Durban South Africa- 4001
- Department of Chemistry Aditya College of Engineering and Technology Surampalem 533437 Andhra Pradesh India
| | - Gan G. Redhi
- Department of Chemistry Durban University of Technology Durban South Africa- 4001
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5
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A Non-label Electrochemical Aptasensor Based on Cu Metal–Organic Framework to Measure Aflatoxin B1 in Wheat Flour. FOOD ANAL METHOD 2021. [DOI: 10.1007/s12161-021-02109-x] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
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6
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Liu J, Zhou Y, Dong H, Li Q, Zhang Y, Xu M. Disposable Electrochemical Aptasensor for Ultrasensitive Determination of Aflatoxin B1 Using Copper Nanoparticles as Probes. ELECTROANAL 2021. [DOI: 10.1002/elan.202100176] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Affiliation(s)
- Jiaxiang Liu
- College of Environmental and Chemical Engineering Shanghai University of Electric Power Shanghai 20090 P. R. China
| | - Yanli Zhou
- Henan Key Laboratory of Biomolecular Recognition and Sensing College of Chemistry and Chemical Engineering Shangqiu Normal University Shangqiu 476000 P. R. China
| | - Hui Dong
- Henan Key Laboratory of Biomolecular Recognition and Sensing College of Chemistry and Chemical Engineering Shangqiu Normal University Shangqiu 476000 P. R. China
| | - Qiaoxia Li
- College of Environmental and Chemical Engineering Shanghai University of Electric Power Shanghai 20090 P. R. China
| | - Yintang Zhang
- Henan Key Laboratory of Biomolecular Recognition and Sensing College of Chemistry and Chemical Engineering Shangqiu Normal University Shangqiu 476000 P. R. China
| | - Maotian Xu
- Henan Key Laboratory of Biomolecular Recognition and Sensing College of Chemistry and Chemical Engineering Shangqiu Normal University Shangqiu 476000 P. R. China
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Moghadam SMM, Alibolandi M, Babaei M, Mosafer J, Saljooghi AS, Ramezani M. Fabrication of deferasirox-decorated aptamer-targeted superparamagnetic iron oxide nanoparticles (SPION) as a therapeutic and magnetic resonance imaging agent in cancer therapy. J Biol Inorg Chem 2021; 26:29-41. [PMID: 33156416 DOI: 10.1007/s00775-020-01834-8] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2020] [Accepted: 10/22/2020] [Indexed: 02/07/2023]
Abstract
In the current study, the synthesis of a theranostic platform composed of superparamagnetic iron oxide nanoparticles (SPION)-deferasirox conjugates targeted with AS1411 DNA aptamer was reported. In this regard, SPION was amine-functionalized by (3-aminopropyl)trimethoxysilane (ATPMS), and then deferasirox was covalently conjugated onto its surface. Finally, to provide guided drug delivery to cancerous tissue, AS1411 aptamer was conjugated to the complex of SPION-deferasirox. The cellular toxicity assay on CHO, C-26 and AGS cell lines verified higher cellular toxicity of targeted complex in comparison with non-targeted one. The evaluation of in vivo tumor growth inhibitory effect in C26 tumor-bearing mice illustrated that the aptamer-targeted complex significantly enhanced the therapeutic outcome in comparison with both non-targeted complex and free drug. The diagnostic capability of the prepared platform was also evaluated implementing C26-tumor-bearing mice. Obtained data confirmed higher tumor accumulation and higher tumor residence time for targeted complex through MRI imaging due to the existence of SPION as a contrast agent in the core of the prepared complex. The prepared multimodal theranostic system provides a safe and effective platform for fighting against cancer.
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Affiliation(s)
| | - Mona Alibolandi
- Pharmaceutical Research Center, Pharmaceutical Technology Institute, Mashhad University of Medical Sciences, Mashhad, Iran
- Department of Pharmaceutical Biotechnology, Pharmaceutical Research Center, School of Pharmacy, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Maryam Babaei
- Pharmaceutical Research Center, Pharmaceutical Technology Institute, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Jafar Mosafer
- Department of Medical Biotechnology, School of Paramedical Sciences, Torbat Heydariyeh University of Medical Sciences, Torbat Heydariyeh, Iran
- Department of Radiology, 9 Day Educational Hospital, Torbat Heydariyeh University of Medical Sciences, Torbat Heydariyeh, Iran
| | - Amir Sh Saljooghi
- Department of Chemistry, Faculty of Science, Ferdowsi University of Mashhad, Mashhad, 91775-1436, Iran.
| | - Mohammad Ramezani
- Pharmaceutical Research Center, Pharmaceutical Technology Institute, Mashhad University of Medical Sciences, Mashhad, Iran.
- Department of Pharmaceutical Biotechnology, Pharmaceutical Research Center, School of Pharmacy, Mashhad University of Medical Sciences, Mashhad, Iran.
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Zhao L, Mao J, Hu L, Zhang S, Yang X. Self-replicating catalyzed hairpin assembly for rapid aflatoxin B1 detection. ANALYTICAL METHODS : ADVANCING METHODS AND APPLICATIONS 2021; 13:222-226. [PMID: 33346755 DOI: 10.1039/d0ay01827a] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Herein, a rapid signal amplified aflatoxin B1 (AFB1) detection system based on self-replicating catalyzed hairpin assembly (SRCHA) has been constructed. In this SRCHA system, trigger DNA was initially blocked and two split trigger DNA sequences were integrated into two hairpin auxiliary probes, H1 and H2, respectively. In the presence of AFB1, the aptamer sequence was recognized by AFB1 and trigger DNA was released, which can initiate a CHA reaction and lead to the formation of a helix DNA H1-H2 complex. Then this complex can dissociate double-stranded probe DNA (F-Q) and the fluorescence signal was recovered. Meanwhile, the two split trigger DNA sequences came into close-enough proximity and a trigger DNA replica was formed. Then the obtained replicas can trigger an additional CHA reaction, leading to the rapid and significant enhancement of the fluorescence signal, and AFB1 can be detected within 15 min with a detection limit of 0.13 ng mL-1. This AFB1 detection system exhibits potential application in the on-site rapid detection of AFB1.
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Affiliation(s)
- Lijun Zhao
- Laboratory of Quality and Safety Risk Assessment for Livestock and Poultry Products(Chengdu), Ministry of Agriculture and Rural Affairs, Chengdu 610041, China and College of Chemical Engineering, Sichuan University, Chengdu 610065, China
| | - Jianfei Mao
- Analysis and Testing Center of Sichuan Academy of Agricultural Science, Chengdu 610066, China.
| | - Li Hu
- Analysis and Testing Center of Sichuan Academy of Agricultural Science, Chengdu 610066, China.
| | - Shu Zhang
- College of Chemistry and Materials Science, Sichuan Normal University, Chengdu 610066, China
| | - Xiaofeng Yang
- Analysis and Testing Center of Sichuan Academy of Agricultural Science, Chengdu 610066, China.
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9
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An Impedance Based Electrochemical Immunosensor for Aflatoxin B1 Monitoring in Pistachio Matrices. CHEMOSENSORS 2020. [DOI: 10.3390/chemosensors8040121] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Aflatoxins are highly toxic fungal secondary metabolites that often contaminate food and feed commodities. An electrochemical immunosensor for the determination of aflatoxin B1 (AFB1) was fabricated by immobilizing monoclonal AFB1 antibodies onto a screen-printed gold electrode that was modified with carbo-methyldextran by N-(3-dimethylaminopropyl)-N′-ethylcarbodiimide hydrochloride/N-hydroxysuccinimide cross-linking. An electrochemical interfacial modelling of biomolecular recognition was suggested and reasonably interpreted. Impedance technology was employed for the quantitative determination of AFB1. The limit of detection concentration of AFB1 for standard solutions and spiked pistachio samples was 0.5 ng/mL and 1 ng/mL, respectively. The immunosensor was able to successfully determine AFB1 concentrations in the range of 4.56–50.86 ng/mL in unknown pistachio samples. Comparative chromatographic analysis revealed that AFB1 concentrations that were higher than 345 ng/mL were not within the immunosensor’s upper limits of detection. Selectivity studies against Ochratoxin A and Aflatoxin M1 demonstrated that the proposed AFB1 immunosensor was able to differentiate between these other fungal mycotoxins. The novel electrochemical immunosensor approach has the potential for rapid sample screening in a portable, disposable format, thus contributing to the requirement for effective prevention and the control of aflatoxin B1 in pistachios.
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Subak H, Selvolini G, Macchiagodena M, Ozkan-Ariksoysal D, Pagliai M, Procacci P, Marrazza G. Mycotoxins aptasensing: From molecular docking to electrochemical detection of deoxynivalenol. Bioelectrochemistry 2020; 138:107691. [PMID: 33232846 DOI: 10.1016/j.bioelechem.2020.107691] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2020] [Revised: 10/15/2020] [Accepted: 10/20/2020] [Indexed: 12/16/2022]
Abstract
This work proposes a voltammetric aptasensor to detect deoxynivalenol (DON) mycotoxin. The development steps of the aptasensor were partnered for the first time to a computational study to gain insights onto the molecular mechanisms involved into the interaction between a thiol-tethered DNA aptamer (80mer-SH) and DON. The exploited docking study allowed to find the binding region of the oligonucleotide sequence and to determine DON preferred orientation. A biotinylated oligonucleotide sequence (20mer-BIO) complementary to the aptamer was chosen to carry out a competitive format. Graphite screen-printed electrodes (GSPEs) were electrochemically modified with polyaniline and gold nanoparticles (AuNPs@PANI) by means of cyclic voltammetry (CV) and worked as a scaffold for the immobilization of the DNA aptamer. Solutions containing increasing concentrations of DON and a fixed amount of 20mer-BIO were dropped onto the aptasensor surface: the resulting hybrids were labeled with an alkaline phosphatase (ALP) conjugate to hydrolyze 1-naphthyl phosphate (1-NPP) substrate into 1-naphthol product, detected by differential pulse voltammetry (DPV). According to its competitive format, the aptasensor response was signal-off in the range 5.0-30.0 ng·mL-1 DON. A detection limit of 3.2 ng·mL-1 was achieved within a 1-hour detection time. Preliminary experiments on maize flour samples spiked with DON yielded good recovery values.
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Affiliation(s)
- Hasret Subak
- Yuzuncu Yil University, Department of Analytical Chemistry, Faculty of Pharmacy, 65010 Van, Turkey; Department of Chemistry "Ugo Schiff", University of Florence, Via della Lastruccia 3, 50019, Sesto Fiorentino, Florence, Italy.
| | - Giulia Selvolini
- Department of Chemistry "Ugo Schiff", University of Florence, Via della Lastruccia 3, 50019, Sesto Fiorentino, Florence, Italy.
| | - Marina Macchiagodena
- Department of Chemistry "Ugo Schiff", University of Florence, Via della Lastruccia 3, 50019, Sesto Fiorentino, Florence, Italy.
| | - Dilsat Ozkan-Ariksoysal
- Ege University, Department of Analytical Chemistry, Faculty of Pharmacy, 35100 Bornova, Izmir, Turkey.
| | - Marco Pagliai
- Department of Chemistry "Ugo Schiff", University of Florence, Via della Lastruccia 3, 50019, Sesto Fiorentino, Florence, Italy.
| | - Piero Procacci
- Department of Chemistry "Ugo Schiff", University of Florence, Via della Lastruccia 3, 50019, Sesto Fiorentino, Florence, Italy.
| | - Giovanna Marrazza
- Department of Chemistry "Ugo Schiff", University of Florence, Via della Lastruccia 3, 50019, Sesto Fiorentino, Florence, Italy; Istituto Nazionale Biostrutture e Biosistemi, Viale delle Medaglie D'Oro 305, 00136 Rome, Italy.
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11
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Singh AK, Dhiman TK, V S LGB, Solanki PR. Dimanganese trioxide (Mn 2O 3) based label-free electrochemical biosensor for detection of Aflatoxin-B1. Bioelectrochemistry 2020; 137:107684. [PMID: 33120294 DOI: 10.1016/j.bioelechem.2020.107684] [Citation(s) in RCA: 23] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2020] [Revised: 10/03/2020] [Accepted: 10/05/2020] [Indexed: 01/06/2023]
Abstract
This work presents, a manganese oxide nanoparticles (Mn2O3nps) based electrochemical immunosensor for the detection of Aflatoxin-B1 (AFB1). X-ray diffrraction spectroscopy study confirms the purely synthesized Mn2O3nps with an average crystallite size of 31.5 nm. Transmission electron microscopy study confirms average particle size of 45 nm. To fabricate an electrochemical biosensor, a thin film of Mn2O3nps was fabricated onto indium tin oxide (ITO) surface using electrophoretic technique. Such fabricated thin film was utilized to immobilize antibodies (Anti-AFB1) for the selective detection of AFB1 using differential pulse voltammetry technique. Prior to perform sensing, bovine serum albumin (BSA) was utilized to block the uncovered sites on the Anti-AFB1/Mn2O3/ITO immunoelectrode surface. The response of BSA/Anti-AFB1/Mn2O3/ITO immunoelectrode was measured as a function of AFB1 in a linear detection range of 1 pg mL-1 to 10 µg mL-1 and sensor showed highest sensitivity of 2.044 μA mL ng-1cm-2 with lower detection limit of 0.54 pg mL-1. A spiked sample response of corn extract was studied in the linear range of 1 pg mL-1 to 10 µg mL-1 and immunoelectrode (BSA/Anti-AFB1/Mn2O3/ITO) showed recovery rate of 98.6 %.
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Affiliation(s)
- Avinash Kumar Singh
- Special Centre for Nanoscience, Jawaharlal Nehru University (JNU), New Delhi 110067, India; School of Physical Sciences, JNU, New Delhi 110067, India
| | - Tarun Kumar Dhiman
- Special Centre for Nanoscience, Jawaharlal Nehru University (JNU), New Delhi 110067, India
| | - Lakshmi G B V S
- Special Centre for Nanoscience, Jawaharlal Nehru University (JNU), New Delhi 110067, India
| | - Pratima R Solanki
- Special Centre for Nanoscience, Jawaharlal Nehru University (JNU), New Delhi 110067, India.
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Xuan Z, Liu H, Ye J, Li L, Tian W, Wang S. Reliable and disposable quantum dot-based electrochemical immunosensor for aflatoxin B 1 simplified analysis with automated magneto-controlled pretreatment system. Anal Bioanal Chem 2020; 412:7615-7625. [PMID: 32856110 DOI: 10.1007/s00216-020-02897-x] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2020] [Revised: 08/05/2020] [Accepted: 08/18/2020] [Indexed: 01/11/2023]
Abstract
An integrated aflatoxin B1 (AFB1) detection platform with quantum dot (QD)-based electrochemical immunosensor and an automated magneto-controlled pretreatment system was successfully developed. The automated pretreatment system adopts the immunoaffinity magnetic beads (IMB) as the capture probe of AFB1 and QD-labeled AFB1 complete antigen (AFB1-BSA-QDs) as the signal probe. AFB1-BSA-QDs can be easily converted into corresponding metallic cations through acidic treatment, which can be detected electrochemically via anode stripping voltammetry (ASV). Moreover, a disposable screen-printed electrode (SPE) without requiring any further modification is used in the novel electrochemical immunosensor' making routine testing feasible. Under optimal conditions, the detectable concentration range of AFB1 was 0.08-800 μg/kg. The metal ion signal associated linearly with the logarithm of AFB1 concentration within the range of 5-240 μg/kg, with a detection limit of 0.05 μg/kg. The spiked recoveries of three different concentrations in four different matrixes ranged from 83.9 to 118.0%, and inter-day relative standard deviations were below 10%. Furthermore, the methodology was validated by analyzing naturally contaminated samples, and results of the novel immunosensor were in good agreement with those of LC-MS/MS, demonstrating the potentiality of the developed method for the monitor of AFB1 in cereals and oils.
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Affiliation(s)
- Zhihong Xuan
- Academy of National Food and Strategic Reserves Administration, No.11 Baiwanzhuang Str, Xicheng District, Beijing, 100037, China
| | - Hongmei Liu
- Academy of National Food and Strategic Reserves Administration, No.11 Baiwanzhuang Str, Xicheng District, Beijing, 100037, China
| | - Jin Ye
- Academy of National Food and Strategic Reserves Administration, No.11 Baiwanzhuang Str, Xicheng District, Beijing, 100037, China.
| | - Li Li
- Academy of National Food and Strategic Reserves Administration, No.11 Baiwanzhuang Str, Xicheng District, Beijing, 100037, China
| | - Wei Tian
- Academy of National Food and Strategic Reserves Administration, No.11 Baiwanzhuang Str, Xicheng District, Beijing, 100037, China
| | - Songxue Wang
- Academy of National Food and Strategic Reserves Administration, No.11 Baiwanzhuang Str, Xicheng District, Beijing, 100037, China.
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Guo Z, Lv L, Cui C, Wang Y, Ji S, Fang J, Yuan M, Yu H. Detection of aflatoxin B 1 with a new label-free fluorescent aptasensor based on exonuclease I and SYBR Gold. ANALYTICAL METHODS : ADVANCING METHODS AND APPLICATIONS 2020; 12:2928-2933. [PMID: 32930216 DOI: 10.1039/d0ay00967a] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
This paper describes a new label-free fluorescent aptasensor for the detection of aflatoxin B1 (AFB1) based upon exonuclease I (Exo I) and SYBR Gold, in which SYBR Gold, aptamer, AFB1, and Exo I were used. Specific combinations of aptamer and AFB1 occurred in the presence of AFB1 and consequently altered the spatial structure of the aptamer, thereby preventing its digestion by Exo I. When SYBR Gold was added, intense fluorescence was observed. Additionally, a good linear relationship was observed under optimized conditions between the fluorescence intensities and the AFB1 concentrations (R2 = 0.993). The established aptamer sensor was highly sensitive and exhibited a low limit of detection of 1.82 ng mL-1, with superior specificity for AFB1. It was also used in the quantification of AFB1 levels in soybean sauce samples and demonstrated satisfactory recoveries in the scope of 94.8-108.9%. The proposed sensor is highly sensitive, low cost, and capable of rapid detection and can thus be used to determine mycotoxin levels in a wide range of feeds and food products in a high-throughput and quantitative means.
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Affiliation(s)
- Zhijun Guo
- College of Agriculture, Yanbian University, Yanji, 133002, China
| | - Lei Lv
- College of Agriculture, Yanbian University, Yanji, 133002, China
| | - Chengbi Cui
- College of Agriculture, Yanbian University, Yanji, 133002, China
| | - Yan Wang
- College of Agricultue and Food Science, Zhejiang Agricultural & Forestry University, Hangzhou, 310000, China
| | - Shuang Ji
- College of Agriculture, Yanbian University, Yanji, 133002, China
| | - Jiaqi Fang
- College of Food Science and Engineering, Jilin Agricultural University, Changchun, 130118, China.
- Division of Soybean Processing, Soybean Research & Development Center, Chinese Agricultural Research System, Changchun, 130118, China
| | - Ming Yuan
- Qiqihar Branch of Heilongjiang Academy of Agricultural Sciences, Qiqihar, 161006, China
| | - Hansong Yu
- College of Food Science and Engineering, Jilin Agricultural University, Changchun, 130118, China.
- Division of Soybean Processing, Soybean Research & Development Center, Chinese Agricultural Research System, Changchun, 130118, China
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Beitollahi H, Tajik S, Dourandish Z, Zhang K, Le QV, Jang HW, Kim SY, Shokouhimehr M. Recent Advances in the Aptamer-Based Electrochemical Biosensors for Detecting Aflatoxin B1 and Its Pertinent Metabolite Aflatoxin M1. SENSORS (BASEL, SWITZERLAND) 2020; 20:E3256. [PMID: 32521629 PMCID: PMC7309004 DOI: 10.3390/s20113256] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/12/2020] [Revised: 05/27/2020] [Accepted: 06/02/2020] [Indexed: 02/07/2023]
Abstract
The notable toxicological impacts of aflatoxin B1 (AFB1) and its main metabolite, aflatoxin M1 (AFM1), on human being health make the evaluation of food quality highly significant. Due to the toxicity of those metabolites-even very low content in foodstuffs-it is crucial to design a sensitive and reliable procedure for their detection. Electrochemical aptamer-based biosensors are considered the most encouraging option, based on multi-placed analysis, rapid response, high sensitivity and specificity. The present review specifically emphasizes the potential utilization of the electrochemical aptasensors for determining the AFM1 and AFB1 with different electrodes.
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Affiliation(s)
- Hadi Beitollahi
- Environment Department, Institute of Science and High Technology and Environmental Sciences, Graduate University of Advanced Technology, Kerman 76315117, Iran; (H.B.); (Z.D.)
| | - Somayeh Tajik
- Research Center for Tropical and Infectious Diseases, Kerman University of Medical Sciences, Kerman 7616913555, Iran
| | - Zahra Dourandish
- Environment Department, Institute of Science and High Technology and Environmental Sciences, Graduate University of Advanced Technology, Kerman 76315117, Iran; (H.B.); (Z.D.)
| | - Kaiqiang Zhang
- Jiangsu Key Laboratory of Advanced Organic Materials, Key Laboratory of Mesoscopic Chemistry of MOE, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210023, Jiangsu, China;
| | - Quyet Van Le
- Institute of Research and Development, Duy Tan University, Da Nang 550000, Vietnam
| | - Ho Won Jang
- Department of Materials Science and Engineering, Research Institute of Advanced Materials, Seoul National University, Seoul 08826, Korea;
| | - Soo Young Kim
- Department of Materials Science and Engineering, Korea University, 145, Anam-ro Seongbuk-gu, Seoul 02841, Korea
| | - Mohammadreza Shokouhimehr
- Department of Materials Science and Engineering, Research Institute of Advanced Materials, Seoul National University, Seoul 08826, Korea;
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Kuzin YI, Padnya PL, Stoikov II, Gorbatchuk VV, Stoikov DI, Khadieva AI, Evtugyn GA. Electrochemical behavior of the monomeric and polymeric forms of N-phenyl-3-(phenylimino)-3H-phenothiazin-7-amine. Electrochim Acta 2020. [DOI: 10.1016/j.electacta.2020.136195] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
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Feng Z, Gao N, Liu J, Li H. Boron-doped diamond electrochemical aptasensors for trace aflatoxin B 1 detection. Anal Chim Acta 2020; 1122:70-75. [PMID: 32503745 DOI: 10.1016/j.aca.2020.04.062] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2019] [Revised: 04/23/2020] [Accepted: 04/24/2020] [Indexed: 02/07/2023]
Abstract
An electrochemical aptasensor for detecting trace aflatoxin B1 (AFB1) is designed and fabricated consisting of aptamers and gold nanoparticles on conductive boron-doped diamond (BDD) electrode. By examining the relative impedance shift from electrochemical impedance spectroscopy as a function of AFB1 concentration, the low detection limit (wide linear relationship range) of the aptasensor is realized to be 5.5 × 10-14 mol L-1 (1.0 × 10-13‒1.0 × 10-8 mol L-1). The variation in impedance property of the aptasensor is determined by the specific adsorption of AFB1 molecules to the aptamer at a certain concentration covering the electrode. By means of multiple characteristic processes, it is demonstrated that the constructed aptasensor is favorable for testing the trace AFB1 with high specificity, sensitivity, stability, repeatability, and reusability, which lead to a possibility to achieve high performance biosensor for practical application to quantitatively detract trace AFB1 in environments.
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Affiliation(s)
- Zhiyuan Feng
- State Key Lab of Superhard Materials, College of Physics, Jilin University, Changchun, 130012, PR China
| | - Nan Gao
- State Key Lab of Superhard Materials, College of Physics, Jilin University, Changchun, 130012, PR China
| | - Junsong Liu
- State Key Lab of Superhard Materials, College of Physics, Jilin University, Changchun, 130012, PR China
| | - Hongdong Li
- State Key Lab of Superhard Materials, College of Physics, Jilin University, Changchun, 130012, PR China.
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17
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Li Y, Liu D, Zhu C, Shen X, Liu Y, You T. Sensitivity programmable ratiometric electrochemical aptasensor based on signal engineering for the detection of aflatoxin B1 in peanut. JOURNAL OF HAZARDOUS MATERIALS 2020; 387:122001. [PMID: 31901843 DOI: 10.1016/j.jhazmat.2019.122001] [Citation(s) in RCA: 62] [Impact Index Per Article: 15.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/09/2019] [Revised: 12/11/2019] [Accepted: 12/29/2019] [Indexed: 06/10/2023]
Abstract
Accurately monitoring of aflatoxin B1 (AFB1), the most hazardous mycotoxin in agricultural products, is essential for the public health, but various testing demands (e.g. detection range, sensitivity) for different samples can be challenging for sensors. Here, we developed a sensitivity-programmable ratiometric electrochemical aptasensor for AFB1 analysis in peanut. Thionine functionalized reduced graphene oxide (THI-rGO) served as reference signal generator, ferrocene-labelled aptamer (Fc-apt) output the response signal. During analysis, the formation of Fc-apt-AFB1 complex led to its stripping from the electrode and faded the current intensity of Fc (IFc), while the current intensity of THI (ITHI) was enhanced. And ratiometric detection of AFB1 was achieved by using the current intensity ratio (ITHI/IFc) as quantitative signal. Compared with ratiometric strategies that highly rely on the labelled aptamers, the proposed strategy could regulate the value of ITHI/IFc by changing the modification of Fc-apt. And the detection sensitivity was found to be closely related to ITHI/IFc. Under the optimal conditions, the fabricated aptasensor with a dynamic range from 0.05-20 ng mL-1 and a detection limit of 0.016 ng mL-1 for AFB1 analysis. Besides, it exhibited excellent selectivity, reliability and reproducibility. The proposed sensitivity-programmable biosensor can be applied to detect various aptamer-recognized mycotoxins in agricultural sensing.
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Affiliation(s)
- Yuye Li
- Key Laboratory of Modern Agricultural Equipment and Technology, Ministry of Education, School of Agricultural Equipment Engineering, Jiangsu University, Zhenjiang, Jiangsu 212013, China
| | - Dong Liu
- Key Laboratory of Modern Agricultural Equipment and Technology, Ministry of Education, School of Agricultural Equipment Engineering, Jiangsu University, Zhenjiang, Jiangsu 212013, China.
| | - Chengxi Zhu
- Key Laboratory of Modern Agricultural Equipment and Technology, Ministry of Education, School of Agricultural Equipment Engineering, Jiangsu University, Zhenjiang, Jiangsu 212013, China
| | - Xiuli Shen
- Key Laboratory of Modern Agricultural Equipment and Technology, Ministry of Education, School of Agricultural Equipment Engineering, Jiangsu University, Zhenjiang, Jiangsu 212013, China
| | - Yang Liu
- College of Science and Engineering, James Cook University, Townsville, Queensland 4811, Australia
| | - Tianyan You
- Key Laboratory of Modern Agricultural Equipment and Technology, Ministry of Education, School of Agricultural Equipment Engineering, Jiangsu University, Zhenjiang, Jiangsu 212013, China.
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18
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Zhao G, Wang YF, Chen J, Yao Y. Predominant Mycotoxins, Pathogenesis, Control Measures, and Detection Methods in Fermented Pastes. Toxins (Basel) 2020; 12:E78. [PMID: 31979410 PMCID: PMC7076863 DOI: 10.3390/toxins12020078] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/02/2020] [Revised: 01/12/2020] [Accepted: 01/21/2020] [Indexed: 12/19/2022] Open
Abstract
Fermented pastes are some of the most popular traditional products in China. Many studies reported a strong possibility that fermented pastes promote exposure to mycotoxins, including aflatoxins, ochratoxins, and cereulide, which were proven to be carcinogenic and neurotoxic to humans. The primary mechanism of pathogenicity is by inhibiting protein synthesis and inducing oxidative stress using cytochrome P450 (CYP) enzymes. The level of mycotoxin production is dependent on the pre-harvest or post-harvest stage. It is possible to implement methods to control mycotoxins by using appropriate antagonistic microorganisms, such as Aspergillus niger, Lactobacillus plantarum, and Saccharomyces cerevisiae isolated from ordinary foods. Also, drying products as soon as possible to avoid condensation or moisture absorption in order to reduce the water activity to lower than 0.82 during storage is also effective. Furthermore, organic acid treatment during the soaking process reduces toxins by more than 90%. Some novel detection technologies based on magnetic adsorption, aptamer probes, and molecular-based methods were applied to rapidly and accurately detect mycotoxins in fermented pastes.
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Affiliation(s)
- Guozhong Zhao
- State Key Laboratory of Food Nutrition and Safety, Key Laboratory of Food Nutrition and Safety, Ministry of Education, College of Food Science and Engineering, Tianjin University of Science & Technology, 300457 Tianjin, China; (G.Z.); (Y.-F.W.)
| | - Yi-Fei Wang
- State Key Laboratory of Food Nutrition and Safety, Key Laboratory of Food Nutrition and Safety, Ministry of Education, College of Food Science and Engineering, Tianjin University of Science & Technology, 300457 Tianjin, China; (G.Z.); (Y.-F.W.)
| | - Junling Chen
- College of Food and Bioengineering, Henan University of Science and Technology, 471023 Luoyang, China;
| | - Yunping Yao
- State Key Laboratory of Food Nutrition and Safety, Key Laboratory of Food Nutrition and Safety, Ministry of Education, College of Food Science and Engineering, Tianjin University of Science & Technology, 300457 Tianjin, China; (G.Z.); (Y.-F.W.)
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Wang C, Qian J, An K, Lu X, Huang X. A semiconductor quantum dot-based ratiometric electrochemical aptasensor for the selective and reliable determination of aflatoxin B1. Analyst 2019; 144:4772-4780. [PMID: 31268094 DOI: 10.1039/c9an00825j] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
In recent years, a ratiometric electrochemical method has been investigated due to its ability to effectively reduce the background electrical signals via the introduction of an internal calibration mechanism, which has great practical significance in the detection of mycotoxins in foods. Herein, we report a ratiometric electrochemical aptasensor based on two semiconductor quantum dots (i.e. CdTe and PbS QDs) for the detection of aflatoxin B1 (AFB1). The aptasensor was fabricated by immobilizing PbS QD-coated silica hybrid spheres (SiO2@PbS) onto CdTe QD-modified Fe3O4@SiO2 (Fe3O4@SiO2/CdTe) surface through biorecognition between the aptamer and complementary DNAs, where PbS QDs acted as external signal labels and CdTe QDs acted as internal reference labels. In the presence of AFB1, the aptamer connected to SiO2@PbS preferred to form an aptamer/AFB1 complex, which brought about the separation of SiO2@PbS linked with the CdTe QDs; with the addition of more AFB1 to the solution, the amount of SiO2@PbS present on the Fe3O4@SiO2/CdTe surface reduced. After several steps of endonuclease cleavage, magnetic separation, and dissolution with acid, the square wave voltammetry signals of Pb2+ and Cd2+ maintained an inverse relationship with the target content based on the SWV stripping measurements; the proposed method had the wide linear range of 5 pg mL-1-50 ng mL-1 and the determination limit of 4.5 pg mL-1 (S/N = 3) and was applied for the detection of AFB1 in peanuts. The proposed aptasensor has an important practical significance for the development of food safety.
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Affiliation(s)
- Chengquan Wang
- School of Food and Biological Engineering, Jiangsu University, Zhenjiang 212013, PR China.
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20
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Application of Electrochemical Aptasensors toward Clinical Diagnostics, Food, and Environmental Monitoring: Review. SENSORS 2019; 19:s19245435. [PMID: 31835479 PMCID: PMC6960919 DOI: 10.3390/s19245435] [Citation(s) in RCA: 54] [Impact Index Per Article: 10.8] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/30/2019] [Revised: 12/03/2019] [Accepted: 12/04/2019] [Indexed: 12/28/2022]
Abstract
Aptamers are synthetic bio-receptors of deoxyribonucleic acid (DNA) or ribonucleic acid (RNA) origin selected by the systematic evolution of ligands (SELEX) process that bind a broad range of target analytes with high affinity and specificity. So far, electrochemical biosensors have come up as a simple and sensitive method to utilize aptamers as a bio-recognition element. Numerous aptamer based sensors have been developed for clinical diagnostics, food, and environmental monitoring and several other applications are under development. Aptasensors are capable of extending the limits of current analytical techniques in clinical diagnostics, food, and environmental sample analysis. However, the potential applications of aptamer based electrochemical biosensors are unlimited; current applications are observed in the areas of food toxins, clinical biomarkers, and pesticide detection. This review attempts to enumerate the most representative examples of research progress in aptamer based electrochemical biosensing principles that have been developed in recent years. Additionally, this account will discuss various current developments on aptamer-based sensors toward heavy metal detection, for various cardiac biomarkers, antibiotics detection, and also on how the aptamers can be deployed to couple with antibody-based assays as a hybrid sensing platform. Aptamers can be used in various applications, however, this account will focus on the recent advancements made toward food, environmental, and clinical diagnostic application. This review paper compares various electrochemical aptamer based sensor detection strategies that have been applied so far and used as a state of the art. As illustrated in the literature, aptamers have been utilized extensively for environmental, cancer biomarker, biomedical application, and antibiotic detection and thus have been extensively discussed in this article.
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Goud KY, Reddy KK, Satyanarayana M, Kummari S, Gobi KV. A review on recent developments in optical and electrochemical aptamer-based assays for mycotoxins using advanced nanomaterials. Mikrochim Acta 2019; 187:29. [PMID: 31813061 DOI: 10.1007/s00604-019-4034-0] [Citation(s) in RCA: 76] [Impact Index Per Article: 15.2] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2019] [Accepted: 11/15/2019] [Indexed: 12/12/2022]
Abstract
This review (with 163 refs) covers the recent developments of nanomaterial-based optical and electrochemical sensors for mycotoxins. The review starts with a brief discussion on occurrence, distribution, toxicity of mycotoxins and the legislations in monitoring their levels. It further outlines the research methods, various recognition matrices and the strategies involved in the development of highly sensitive and selective sensor systems. It also points out the salient features and importance of aptasensors in the detection of mycotoxins along with the different immobilization methods of aptamers. The review meticulously discusses the performance of different optical and electrochemical sensors fabricated using aptamers coupled with nanomaterials (CNT, graphene, metal nanoparticles and metal oxide nanoparticles). The review addresses the limitations in the current developments as well as the future challenges involved in the successful construction of aptasensors with the functionalized nanomaterials. Graphical abstract Recent developments in nanomaterial based aptasensors for mycotoxins are summarized. Specifically, the efficiency of the nanomaterial coupled aptasensors (such as CNT, graphene, metal nanoparticles and metal oxide nanoparticles) in optical and electrochemical methods are discussed.
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Affiliation(s)
- K Yugender Goud
- Department of NanoEngineering, University of California San Diego, La Jolla, CA, 92093, USA.
| | - K Koteshwara Reddy
- Department of Chemistry, National Institute of Technology, Warangal, Telangana, 506004, India
| | - M Satyanarayana
- Electrical and Computer Engineering, Iowa State University, Ames, IA, 50011, USA
| | - Shekher Kummari
- Department of Chemistry, National Institute of Technology, Warangal, Telangana, 506004, India
| | - K Vengatajalabathy Gobi
- Department of Chemistry, National Institute of Technology, Warangal, Telangana, 506004, India.
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Wei M, Zhao F, Xie Y. A novel gold nanostars-based fluorescent aptasensor for aflatoxin B1 detection. Talanta 2019; 209:120599. [PMID: 31892078 DOI: 10.1016/j.talanta.2019.120599] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2019] [Revised: 11/24/2019] [Accepted: 11/25/2019] [Indexed: 12/20/2022]
Abstract
In this work, a simple and sensitive fluorescent aptasensor for aflatoxin B1 (AFB1) detection was proposed using gold nanostars (AuNSs) as a novel fluorescence quenching material. Carboxyfluorescein-labeled complementary DNA with hairpin structure (FAM-labeled HP) was designed to hybridize with AFB1 aptamer to form double-stranded DNA, resulting in the opening of hairpin structure. When double-stranded DNA was modified on AuNSs surface, FAM was far from AuNSs and produced a strong fluorescence intensity. The introduction of AFB1 in the system led to the specific interaction of AFB1 and aptamer, and changed the conformation of aptamer, inducing the release of aptamer from double-stranded DNA and the restoration of hairpin structure. Fluorescence quenching occurred when FAM was close to AuNSs, and the fluorescence intensity decreased. In the presence of 5 ng/mL AFB1, ΔF/F0 of the AuNSs/FAM-labeled HP/Apt was ~44.2%, higher than that of the AuNPs/FAM-labeled HP/Apt, indicating the better quenching effect of AuNSs. The change of fluorescence intensity linearly increased by adding AFB1 in the concentration range of 0.1 ng/mL-10 ng/mL, with the LOD of 21.3 pg/mL. The proposed aptasensor exhibited good selectivity in the presence of other toxins at 10-fold concentration of AFB1, and showed satisfactory recovery in the range of 92%-112% toward AFB1 detection in spiked corn flour sample.
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Affiliation(s)
- Min Wei
- College of Food Science and Technology, Henan Key Laboratory of Cereal and Oil Food Safety Inspection and Control, Henan University of Technology, Zhengzhou, 450001, PR China
| | - Fei Zhao
- College of Food Science and Technology, Henan Key Laboratory of Cereal and Oil Food Safety Inspection and Control, Henan University of Technology, Zhengzhou, 450001, PR China
| | - Yanli Xie
- College of Food Science and Technology, Henan Key Laboratory of Cereal and Oil Food Safety Inspection and Control, Henan University of Technology, Zhengzhou, 450001, PR China.
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Xue Z, Zhang Y, Yu W, Zhang J, Wang J, Wan F, Kim Y, Liu Y, Kou X. Recent advances in aflatoxin B1 detection based on nanotechnology and nanomaterials-A review. Anal Chim Acta 2019; 1069:1-27. [DOI: 10.1016/j.aca.2019.04.032] [Citation(s) in RCA: 73] [Impact Index Per Article: 14.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/24/2018] [Revised: 03/22/2019] [Accepted: 04/15/2019] [Indexed: 02/02/2023]
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24
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Zejli H, Goud KY, Marty JL. An electrochemical aptasensor based on polythiophene-3-carboxylic acid assisted methylene blue for aflatoxin B1 detection. SENSING AND BIO-SENSING RESEARCH 2019. [DOI: 10.1016/j.sbsr.2019.100290] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/26/2022] Open
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25
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Wang C, Li Y, Zhao Q. A signal-on electrochemical aptasensor for rapid detection of aflatoxin B1 based on competition with complementary DNA. Biosens Bioelectron 2019; 144:111641. [PMID: 31494505 DOI: 10.1016/j.bios.2019.111641] [Citation(s) in RCA: 67] [Impact Index Per Article: 13.4] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2019] [Revised: 08/21/2019] [Accepted: 08/26/2019] [Indexed: 12/20/2022]
Abstract
Aflatoxin B1 (AFB1) is the most toxic mycotoxin, causing harmful effects on human and animal health, and the rapid and sensitive detection of AFB1 is highly demanded. We developed a simple electrochemical aptasensor achieving rapid detection of aflatoxin B1 (AFB1). A short anti-AFB1 aptamer having a methylene blue (MB) redox tag at the 3'-end was immobilized on the surface of a gold electrode. In the absence of AFB1, a complementary DNA (cDNA) strand hybridized with the MB-labeled aptamer, causing MB apart from the electrode surface and low current of MB. In the presence of AFB1, AFB1 competed with the cDNA in the binding to the MB-labeled aptamer, and the aptamer-AFB1 binding caused formation of a hairpin structure, making the MB close to the electrode surface and current of MB increase. Under optimized conditions, we achieved detection of AFB1 over dynamic concentration range of 2 nM-4 μM by using this signal-on electrochemical aptasensor. This method only required a simple 5-min incubation of sample solution prior to rapid electrochemical sensing, more rapid than other electrochemical aptasensors. The sensor could be well regenerated and reused. This sensor allowed to detect AFB1 spiked in 20-fold diluted beer and 50-fold diluted white wine, respectively. It shows potential for detection of AFB1 in wide applications.
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Affiliation(s)
- Chao Wang
- State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing, 100085, China; University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Yapiao Li
- State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing, 100085, China; University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Qiang Zhao
- State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing, 100085, China; University of Chinese Academy of Sciences, Beijing, 100049, China.
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Selvolini G, Lettieri M, Tassoni L, Gastaldello S, Grillo M, Maran C, Marrazza G. Electrochemical enzyme-linked oligonucleotide array for aflatoxin B 1 detection. Talanta 2019; 203:49-57. [PMID: 31202349 DOI: 10.1016/j.talanta.2019.05.044] [Citation(s) in RCA: 34] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2019] [Revised: 05/07/2019] [Accepted: 05/09/2019] [Indexed: 01/21/2023]
Abstract
In this work, an electrochemical enzyme-linked oligonucleotide array to achieve simple and rapid multidetection of aflatoxin B1 (AFB1) is presented. The assay is based on a competitive format and disposable screen-printed cells (SPCs). Firstly, the electrodeposition of poly(aniline-anthranilic acid) copolymer (PANI-PAA) on graphite screen-printed working electrodes was performed by means of cyclic voltammetry (CV). Aflatoxin B1 conjugated with bovine serum albumin (AFB1-BSA) was then immobilized by covalent binding on PANI-PAA copolymer. After performing the affinity reaction between AFB1 and the biotinylated DNA-aptamer (apt-BIO), the solution was dropped on the modified SPCs and the competition was carried out. The biotinylated complexes formed onto the sensor surface were coupled with a streptavidin-alkaline phosphatase conjugate. 1-naphthyl phosphate was used as enzymatic substrate; the electroactive product was detected by differential pulse voltammetry (DPV). The response of the enzyme-linked oligonucleotide assay was signal-off, according to the competitive format. A dose-response curve was obtained between 0.1 ng mL-1 and 10 ng mL-1 and a limit of detection of 0.086 ng mL-1 was achieved. Finally, preliminary experiments in maize flour samples spiked with AFB1 were also performed.
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Affiliation(s)
- Giulia Selvolini
- Department of Chemistry "Ugo Schiff", University of Florence, Via della Lastruccia 3, 50019, Sesto Fiorentino, Florence, Italy
| | - Mariagrazia Lettieri
- Department of Chemistry "Ugo Schiff", University of Florence, Via della Lastruccia 3, 50019, Sesto Fiorentino, Florence, Italy
| | - Luca Tassoni
- ATPr&d S.r.l, Via Ca' Marzare 3, 36043, Camisano Vicentino (VI), Italy
| | | | - Maria Grillo
- ATPr&d S.r.l, Via Ca' Marzare 3, 36043, Camisano Vicentino (VI), Italy
| | - Claudio Maran
- ATPr&d S.r.l, Via Ca' Marzare 3, 36043, Camisano Vicentino (VI), Italy
| | - Giovanna Marrazza
- Department of Chemistry "Ugo Schiff", University of Florence, Via della Lastruccia 3, 50019, Sesto Fiorentino, Florence, Italy; Istituto Nazionale Biostrutture e Biosistemi, Viale delle Medaglie D'Oro 305, 00136 Rome, Italy.
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27
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Chen W, Zhu M, Liu Q, Guo Y, Wang H, Wang K. Fabricating photoelectrochemical aptasensor for sensitive detection of aflatoxin B1 with visible-light-driven BiOBr/nitrogen-doped graphene nanoribbons. J Electroanal Chem (Lausanne) 2019. [DOI: 10.1016/j.jelechem.2019.03.033] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
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28
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Abstract
Modern analysis of food and feed is mostly focused on development of fast and reliable portable devices intended for field applications. In this review, electrochemical biosensors based on immunological reactions and aptamers are considered in the determination of mycotoxins as one of most common contaminants able to negatively affect human health. The characteristics of biosensors are considered from the point of view of general principles of bioreceptor implementation and signal transduction providing sub-nanomolar detection limits of mycotoxins. Moreover, the modern trends of bioreceptor selection and modification are discussed as well as future trends of biosensor development for mycotoxin determination are considered.
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29
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Geleta GS, Zhao Z, Wang Z. A novel reduced graphene oxide/molybdenum disulfide/polyaniline nanocomposite-based electrochemical aptasensor for detection of aflatoxin B 1. Analyst 2019; 143:1644-1649. [PMID: 29509194 DOI: 10.1039/c7an02050c] [Citation(s) in RCA: 57] [Impact Index Per Article: 11.4] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
In this study, we developed a novel reduced graphene oxide/molybdenum disulfide/polyaniline@gold nanoparticles-based electrochemical aptasensor (termed as RGO/MoS2/PANI@AuNPs/Apt) for detection of aflatoxin B1 (AFB1). The RGO/MoS2/PANI nanocomposites were synthesized and characterized by multiple techniques, including scanning electron microscopy (SEM), transmission electron microscopy (TEM), infrared spectroscopy (FTIR), UV-visible spectroscopy, and X-ray photoelectron spectroscopy (XPS). A glassy carbon electrode (GCE) was then modified by the RGO/MoS2/PANI nanocomposites, coated with a chitosan (Cs) film, and followed by AuNPs attachment for immobilizing the AFB1 aptamers. In the presence of AFB1, the AFB1 binding-induced conformation change of the immobilized aptamer on the electrode surface results in the reduction of the electron transfer from a [Fe(CN)6]3-/4- redox couple in the solution to the GCE surface. Therefore, the aptamer-AFB1 binding event can be easily monitored by the peak current change of the RGO/MoS2/PANI@AuNPs/Apt through differential pulse voltammetry (DPV) measurement. Under the optimized conditions, the as-developed RGO/MoS2/PANI@AuNPs/Apt exhibits a wide linear range from 0.01 fg mL-1 to 1.0 fg mL-1 and a remarkably low detection limit (3σ) of 0.002 fg mL-1. The aptasensor also has good reproducibility as well as shows high selectivity against other fungal toxins, such as OTA and FB1. Moreover, the practicability of the RGO/MoS2/PANI@AuNPs/Apt was demonstrated by the analysis of AFB1 in the spiked wine samples.
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Affiliation(s)
- Girma Selale Geleta
- State Key Laboratory of Electroanalytical Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of sciences, Changchun 130022, China.
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30
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Beheshti-Marnani A, Hatefi-Mehrjardi A, Es'haghi Z. A sensitive biosensing method for detecting of ultra-trace amounts of AFB1 based on "Aptamer/reduced graphene oxide" nano-bio interaction. Colloids Surf B Biointerfaces 2018; 175:98-105. [PMID: 30522013 DOI: 10.1016/j.colsurfb.2018.11.087] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2018] [Revised: 11/19/2018] [Accepted: 11/30/2018] [Indexed: 12/20/2022]
Abstract
A simple, low-cost and sensitive label-free aptasensor assembled with assisting reduced graphene oxide nanosheets as the signal amplifier was fabricated and applied for detecting ultra-low levels of Aflatoxin B1(AFB1) through a nano-bio interaction system. The conditions of different modified glassy carbon electrodes as the base of aptasensor were investigated by cyclic voltammetry (CV), differential pulse voltammetry (DPV) and electrochemical impedance spectroscopy (EIS). The performance of the fabricated aptasensor was evaluated by FESEM, HRTEM and AFM images. The proposed biosensor detected AFB1sensitively in a wide linear range (0.5 nM-4μM) by DPV with a considerable low limit of detection (LOD = 0.07 nM) and good repeatability (RSD = 2.9) and stability. Finally, the present aptasensor was applied successfully for monitoring AFB1 with appropriate recoveries in pasteurized cow milk and human blood plasma as real samples.
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Affiliation(s)
| | | | - Zarrin Es'haghi
- Department of Chemistry, Payame Noor University (PNU), P.O. Box: 19395-4697, Tehran, Iran.
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31
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Nikoleli GP, Nikolelis DP, Siontorou CG, Nikolelis MT, Karapetis S. The Application of Lipid Membranes in Biosensing. MEMBRANES 2018; 8:E108. [PMID: 30441848 PMCID: PMC6316677 DOI: 10.3390/membranes8040108] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/08/2018] [Revised: 11/01/2018] [Accepted: 11/12/2018] [Indexed: 12/20/2022]
Abstract
The exploitation of lipid membranes in biosensors has provided the ability to reconstitute a considerable part of their functionality to detect trace of food toxicants and environmental pollutants. This paper reviews recent progress in biosensor technologies based on lipid membranes suitable for food quality monitoring and environmental applications. Numerous biosensing applications based on lipid membrane biosensors are presented, putting emphasis on novel systems, new sensing techniques, and nanotechnology-based transduction schemes. The range of analytes that can be currently using these lipid film devices that can be detected include, insecticides, pesticides, herbicides, metals, toxins, antibiotics, microorganisms, hormones, dioxins, etc. Technology limitations and future prospects are discussed, focused on the evaluation/validation and eventually commercialization of the proposed lipid membrane-based biosensors.
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Affiliation(s)
- Georgia-Paraskevi Nikoleli
- Laboratory of Inorganic & Analytical Chemistry, School of Chemical Engineering, Dept 1, Chemical Sciences, National Technical University of Athens, 9 Iroon Polytechniou St., 15780 Athens, Greece.
| | - Dimitrios P Nikolelis
- Laboratory of Environmental Chemistry, Department of Chemistry, University of Athens, Panepistimiopolis-Kouponia, 15771 Athens, Greece.
| | - Christina G Siontorou
- Laboratory of Simulation of Industrial Processes, Department of Industrial Management and Technology, School of Maritime and Industry, University of Piraeus, 18534 Pireus, Greece.
| | - Marianna-Thalia Nikolelis
- Laboratory of Environmental Chemistry, Department of Chemistry, University of Athens, Panepistimiopolis-Kouponia, 15771 Athens, Greece.
| | - Stephanos Karapetis
- Laboratory of Inorganic & Analytical Chemistry, School of Chemical Engineering, Dept 1, Chemical Sciences, National Technical University of Athens, 9 Iroon Polytechniou St., 15780 Athens, Greece.
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32
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Li F, Yu Z, Han X, Lai RY. Electrochemical aptamer-based sensors for food and water analysis: A review. Anal Chim Acta 2018; 1051:1-23. [PMID: 30661605 DOI: 10.1016/j.aca.2018.10.058] [Citation(s) in RCA: 134] [Impact Index Per Article: 22.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2018] [Revised: 10/03/2018] [Accepted: 10/23/2018] [Indexed: 02/07/2023]
Abstract
Global food and water safety issues have prompted the development of highly sensitive, specific, and fast analytical techniques for food and water analysis. The electrochemical aptamer-based detection platform (E-aptasensor) is one of the more promising detection techniques because of its unique combination of advantages that renders these sensors ideal for detection of a wide range of target analytes. Recent research results have further demonstrated that this technique has potential for real world analysis of food and water contaminants. This review summaries the recently developed E-aptasensors for detection of analytes related to food and water safety, including bacteria, mycotoxins, algal toxins, viruses, drugs, pesticides, and metal ions. Ten different electroanalytical techniques and one opto-electroanalytical technique commonly employed with these sensors are also described. In addition to highlighting several novel sensor designs, this review also describes the strengths, limitations, and current challenges this technology faces, and future development trend.
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Affiliation(s)
- Fengqin Li
- Post-Doctoral Research Center of Chongqing Key Laboratory of Inorganic Special Functional Materials, College of Chemistry and Chemical Engineering, Yangtze Normal University, Fuling, Chongqing, 408100, China; College of Chemical and Environmental Engineering, Harbin University of Science and Technology, Harbin, 150040, China
| | - Zhigang Yu
- Post-Doctoral Research Center of Chongqing Key Laboratory of Inorganic Special Functional Materials, College of Chemistry and Chemical Engineering, Yangtze Normal University, Fuling, Chongqing, 408100, China; College of Chemical and Environmental Engineering, Harbin University of Science and Technology, Harbin, 150040, China.
| | - Xianda Han
- Post-Doctoral Research Center of Chongqing Key Laboratory of Inorganic Special Functional Materials, College of Chemistry and Chemical Engineering, Yangtze Normal University, Fuling, Chongqing, 408100, China; College of Chemical and Environmental Engineering, Harbin University of Science and Technology, Harbin, 150040, China
| | - Rebecca Y Lai
- Department of Chemistry, University of Nebraska-Lincoln, Lincoln, NE, 68588-0304, United States.
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Duan N, Wu S, Dai S, Gu H, Hao L, Ye H, Wang Z. Advances in aptasensors for the detection of food contaminants. Analyst 2018; 141:3942-61. [PMID: 27265444 DOI: 10.1039/c6an00952b] [Citation(s) in RCA: 85] [Impact Index Per Article: 14.2] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
Food safety is a global health objective, and foodborne diseases represent a major crisis in health. Techniques that are simple and suitable for fast screening to detect and identify pathogenic factors in the food chain are vital to ensure food safety. At present, a variety of analytical methods have been reported for the detection of pathogenic agents. Whereas the sensitivity of detection and quantification are still important challenges, we expect major advances from new assay formats and synthetic bio-recognition elements, such as aptamers. Owing to the specific folding capability of aptamers in the presence of an analyte, aptasensors have substantially and successfully been exploited for the detection of a wide range of small and large molecules (e.g., toxins, antibiotics, heavy metals, bacteria, viruses) at very low concentrations. Here, we review the use of aptasensors for the development of highly sensitive and affordable detection tools for food analysis.
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Affiliation(s)
- Nuo Duan
- State Key Laboratory of Food Science and Technology, School of Food Science and Technology, Jiangnan University, Wuxi 214122, China.
| | - Shijia Wu
- State Key Laboratory of Food Science and Technology, School of Food Science and Technology, Jiangnan University, Wuxi 214122, China.
| | - Shaoliang Dai
- State Key Laboratory of Food Science and Technology, School of Food Science and Technology, Jiangnan University, Wuxi 214122, China.
| | - Huajie Gu
- State Key Laboratory of Food Science and Technology, School of Food Science and Technology, Jiangnan University, Wuxi 214122, China.
| | - Liling Hao
- State Key Laboratory of Food Science and Technology, School of Food Science and Technology, Jiangnan University, Wuxi 214122, China.
| | - Hua Ye
- State Key Laboratory of Food Science and Technology, School of Food Science and Technology, Jiangnan University, Wuxi 214122, China.
| | - Zhouping Wang
- State Key Laboratory of Food Science and Technology, School of Food Science and Technology, Jiangnan University, Wuxi 214122, China.
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Zhang J, Li Z, Zhao S, Lu Y. Size-dependent modulation of graphene oxide-aptamer interactions for an amplified fluorescence-based detection of aflatoxin B1 with a tunable dynamic range. Analyst 2018; 141:4029-34. [PMID: 27137348 DOI: 10.1039/c6an00368k] [Citation(s) in RCA: 62] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
Aflatoxin B1 (AFB1) is a common toxin found in many foods. While AFB1 sensors have been reported, few studies have shown amplified detection with tunable dynamic ranges. We herein report a simple and highly sensitive amplified aptamer-based fluorescent sensor for AFB1, which relies on the ability of nano-graphene oxide (GO) to protect aptamers from nuclease cleavage for amplified detection and on the nanometer size effect of GO to tune the dynamic range and sensitivity. The assay was performed by simply mixing the carboxyl-X-rhodamine (ROX)-labeled AFB1 aptamer, the GO, the nuclease, and the AFB1 samples. Modulating the size of the GO nanosheet resulted in three dynamic ranges, i.e., 12.5 to 312.5 ng mL(-1), 1.0 to 100 ng mL(-1), and 5.0 to 50 ng mL(-1), with corresponding limits of detection of 10.0 ng mL(-1), 0.35 ng mL(-1) and 15.0 ng mL(-1), respectively. The sensor was highly selective against other aflatoxins and common molecules in foods, and its performance was verified in corn samples spiked with known concentration of AFB1.
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Affiliation(s)
- JingJing Zhang
- Department of Chemistry, University of Illinois at Urbana-Champaign, Urbana, IL 61801, USA.
| | - Zengmei Li
- Institute of Agricultural Quality Standards and Testing Technology Research, Shandong Academy of Agricultural Sciences, Jinan, 250100, People's Republic of China and Department of Chemistry, Key laboratory of Test Technology on Food Quality and Safety of Shandong Province, Jinan, 250100, People's Republic of China
| | - Shancang Zhao
- Institute of Agricultural Quality Standards and Testing Technology Research, Shandong Academy of Agricultural Sciences, Jinan, 250100, People's Republic of China and Department of Chemistry, Key laboratory of Test Technology on Food Quality and Safety of Shandong Province, Jinan, 250100, People's Republic of China
| | - Yi Lu
- Department of Chemistry, University of Illinois at Urbana-Champaign, Urbana, IL 61801, USA.
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Nikoleli GP, Nikolelis DP, Siontorou CG, Karapetis S, Nikolelis MT. Application of Biosensors Based on Lipid Membranes for the Rapid Detection of Toxins. BIOSENSORS 2018; 8:E61. [PMID: 29949911 PMCID: PMC6163383 DOI: 10.3390/bios8030061] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/17/2018] [Revised: 06/04/2018] [Accepted: 06/21/2018] [Indexed: 11/16/2022]
Abstract
Lipid assemblies in the form of two dimensional films have been used extensively as biosensing platforms. These films exhibit certain similarities with cell membranes, thus providing a suitable means for the immobilization of proteinaceous moieties and, further, a number of intrinsic signal amplification mechanisms. Their implementation in the detection of toxins yielded reliable and fast detectors for in field analyses of environmental and clinical samples. Some examples are presented herein, including aflatoxin and cholera toxin detection. The conditions and parameters that determine the analytical specifications of the lipid membrane sensors are discussed, advantages and technology bottlenecks are reviewed, and possible further developments are highlighted.
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Affiliation(s)
- Georgia-Paraskevi Nikoleli
- Laboratory of Inorganic & Analytical Chemistry, School of Chemical Engineering, Department 1, Chemical Sciences, National Technical University of Athens, 9 Iroon Polytechniou St., 15780 Athens, Greece.
| | - Dimitrios P Nikolelis
- Laboratory of Environmental Chemistry, Department of Chemistry, University of Athens, Panepistimiopolis-Kouponia, 15771 Athens, Greece.
| | - Christina G Siontorou
- Laboratory of Simulation of Industrial Processes, Department of Industrial Management and Technology, School of Maritime and Industry, University of Piraeus, 18534 Pireus, Greece.
| | - Stephanos Karapetis
- Laboratory of Inorganic & Analytical Chemistry, School of Chemical Engineering, Department 1, Chemical Sciences, National Technical University of Athens, 9 Iroon Polytechniou St., 15780 Athens, Greece.
| | - Marianna-Thalia Nikolelis
- Laboratory of Simulation of Industrial Processes, Department of Industrial Management and Technology, School of Maritime and Industry, University of Piraeus, 18534 Pireus, Greece.
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Peng G, Li X, Cui F, Qiu Q, Chen X, Huang H. Aflatoxin B1 Electrochemical Aptasensor Based on Tetrahedral DNA Nanostructures Functionalized Three Dimensionally Ordered Macroporous MoS 2-AuNPs Film. ACS APPLIED MATERIALS & INTERFACES 2018; 10:17551-17559. [PMID: 29733573 DOI: 10.1021/acsami.8b01693] [Citation(s) in RCA: 87] [Impact Index Per Article: 14.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
In food safety evaluation, aflatoxin B1 (AFB1) is an important indicator. In this work, we developed an AFB1 electrochemical aptasensor based on a tetrahedral DNA nanostructures (TDNs) immobilized three dimensionally ordered macroporous MoS2-AuNPs hybrid (3DOM MoS2-AuNPs) recognition interface and horseradish peroxidase (HRP) functionalized magnetic signal amplifier. To greatly enhance the recognition efficiency, sensitivity, and stability of the aptasensor, the AFB1 aptamer-incorporated TDNs were ingeniously combined with the 3DOM MoS2-AuNPs film for the construction of the sensing interface. The aptamers would release from the electrode surface after they reacted with AFB1, and then the hybridization-free TDNs formed. Thus, the biocomposite of DNA helper strands (H1)/HRP functionalized AuNPs-SiO2@Fe3O4 nanospheres would combine with the hybridization-free TDNs due to the hybridization of H1 and TDNs. The more AFB1 existed in the solution, the more H1/HRP-AuNPs-SiO2@Fe3O4 could be combined onto the 3DOM MoS2-AuNPs surface. The current response coming from HRP-catalyzed reduction of H2O2 using thionine (Thi) as electrochemical probe was proportional with the AFB1 concentration. Upon optimal conditions, the aptasensor showed specificity for AFB1, achieving a good linear range of 0.1 fg/mL-0.1 μg/mL and the detection limit of 0.01 fg/mL. Furthermore, the developed aptasensor was also applied for detecting AFB1 content in rice and wheat powder samples, obtaining good results in conformity with those achieved from the high-performance liquid chromatography tandem mass spectrometry (HPLC-MS) method.
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Evtugyn G, Subjakova V, Melikishvili S, Hianik T. Affinity Biosensors for Detection of Mycotoxins in Food. ADVANCES IN FOOD AND NUTRITION RESEARCH 2018; 85:263-310. [PMID: 29860976 DOI: 10.1016/bs.afnr.2018.03.003] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
This chapter reviews recent achievements in methods of detection of mycotoxins in food. Special focus is on the biosensor technology that utilizes antibodies and nucleic acid aptamers as receptors. Development of biosensors is based on the immobilization of antibodies or aptamers onto various conventional supports like gold layer, but also on nanomaterials such as graphene oxide, carbon nanotubes, and quantum dots that provide an effective platform for achieving high sensitivity of detection using various physical methods, including electrochemical, mass sensitive, and optical. The biosensors developed so far demonstrate high sensitivity typically in subnanomolar limit of detection. Several biosensors have been validated in real samples. The sensitivity of biosensors is similar and, in some cases, even better than traditional analytical methods such as ELISA or chromatography. We believe that future trends will be focused on improving biosensor properties toward practical application in food industry.
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Affiliation(s)
- Gennady Evtugyn
- Analytical Chemistry Department, Chemistry Institute of Kazan Federal University, Kazan, Russian Federation
| | - Veronika Subjakova
- Department of Nuclear Physics and Biophysics, Comenius University, Bratislava, Slovakia
| | - Sopio Melikishvili
- Department of Nuclear Physics and Biophysics, Comenius University, Bratislava, Slovakia
| | - Tibor Hianik
- Department of Nuclear Physics and Biophysics, Comenius University, Bratislava, Slovakia.
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Yagati AK, Chavan SG, Baek C, Lee MH, Min J. Label-Free Impedance Sensing of Aflatoxin B₁ with Polyaniline Nanofibers/Au Nanoparticle Electrode Array. SENSORS (BASEL, SWITZERLAND) 2018; 18:E1320. [PMID: 29695134 PMCID: PMC5981831 DOI: 10.3390/s18051320] [Citation(s) in RCA: 43] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/05/2018] [Revised: 04/21/2018] [Accepted: 04/21/2018] [Indexed: 12/28/2022]
Abstract
Aflatoxin B1 (AFB₁) is produced by the Aspergillus flavus and Aspergillus parasiticus group of fungi which is most hepatotoxic and hepatocarcinogenic and occurs as a contaminant in a variety of foods. AFB₁ is mutagenic, teratogenic, and causes immunosuppression in animals and is mostly found in peanuts, corn, and food grains. Therefore, novel methodologies of sensitive and expedient strategy are often required to detect mycotoxins at the lowest level. Herein, we report an electrochemical impedance sensor that selectively detects AFB₁ at the lowest level by utilizing polyaniline nanofibers (PANI) coated with gold (Au) nanoparticles composite based indium tin oxide (ITO) disk electrodes. The Au-PANI nanocomposites were characterized by scanning electron microscopy (SEM), X-ray diffraction (XRD) spectroscopy, and electrochemical impedance spectroscopy (EIS). The composite electrode exhibited a 14-fold decrement in |Z|1Hz in comparison with the bare electrode. The Au-PANI acted as an effective sensing platform having high surface area, electrochemical conductivity, and biocompatibility which enabled greater loading deposits of capture antibodies. As a result, the presence of AFB₁ was screened with high sensitivity and stability by monitoring the changes in impedance magnitude (|Z|) in the presence of a standard iron probe which was target specific and proportional to logarithmic AFB₁ concentrations (CAFB₁). The sensor exhibits a linear range 0.1 to 100 ng/mL with a detection limit (3) of 0.05 ng/mL and possesses good reproducibility and high selectivity against another fungal mycotoxin, Ochratoxin A (OTA). With regard to the practicability, the proposed sensor was successfully applied to spiked corn samples and proved excellent potential for AFB₁ detection and development of point-of-care (POC) disease sensing applications.
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Affiliation(s)
- Ajay Kumar Yagati
- School of Integrative Engineering, Chung-Ang University, Heukseok-dong, Dongjak-gu, Seoul 06974, Korea.
| | - Sachin Ganpat Chavan
- School of Integrative Engineering, Chung-Ang University, Heukseok-dong, Dongjak-gu, Seoul 06974, Korea.
| | - Changyoon Baek
- School of Integrative Engineering, Chung-Ang University, Heukseok-dong, Dongjak-gu, Seoul 06974, Korea.
| | - Min-Ho Lee
- School of Integrative Engineering, Chung-Ang University, Heukseok-dong, Dongjak-gu, Seoul 06974, Korea.
| | - Junhong Min
- School of Integrative Engineering, Chung-Ang University, Heukseok-dong, Dongjak-gu, Seoul 06974, Korea.
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Wang C, Qian J, An K, Ren C, Lu X, Hao N, Liu Q, Li H, Huang X, Wang K. Fabrication of magnetically assembled aptasensing device for label-free determination of aflatoxin B1 based on EIS. Biosens Bioelectron 2018; 108:69-75. [PMID: 29501049 DOI: 10.1016/j.bios.2018.02.043] [Citation(s) in RCA: 61] [Impact Index Per Article: 10.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2017] [Revised: 02/07/2018] [Accepted: 02/18/2018] [Indexed: 11/30/2022]
Abstract
Aflatoxin B1 (AFB1), one of the most common mycotoxins in food matrixes, has been identified as the most toxic contaminant with mutagenic, teratogenic, immunosuppressive, and carcinogenic effects. In this work, a magnetically assembled aptasensing device has been designed for label-free determination of AFB1 by employing a disposable screen-printed carbon electrode (SPCE) covered with a designed polydimethylsiloxane (PDMS) film as the micro electrolytic cell. The magnetically controlled bio-probes were firstly prepared by immobilization of the thiolated aptamers on the Fe3O4@Au magnetic beads, which was rapidly assembled on the working electrode of SPCE within 10 s, by using a magnet placed at the opposite side. The PDMS film with a centered hole was covered on the SPCE surface to achieve a more practicable and flexible electrochemical measurement. In this effort, a label-free aptasensor for the sensitive and selective determination of AFB1 has been developed using electrochemical impedance spectroscopy upon the biorecognition between aptamers and the targets. The developed method had a wide linear range of 20 pg mL-1-50 ng mL-1 with a detection limit of 15 pg mL-1 (S/N = 3) and succeeded in spiked samples of peanuts. The developed aptasensing device shows fantastic application prospect with simple design, easy operation, low cost, and high sensitivity and selectivity characteristics. This sensing strategy represents a promising path toward routine quality control of food safety and creates the opportunity to develop facile aptasensing device for other targets.
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Affiliation(s)
- Chengquan Wang
- School of Food and Biological Engineering, Jiangsu University, Zhenjiang 212013, PR China; School of Chemical and Biomolecular Engineering, Georgia Institute of Technology, Atlanta, GA, 30332, USA
| | - Jing Qian
- School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang 212013, PR China
| | - Keqi An
- School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang 212013, PR China
| | - Chanchan Ren
- School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang 212013, PR China
| | - Xiaoting Lu
- School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang 212013, PR China
| | - Nan Hao
- School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang 212013, PR China
| | - Qian Liu
- School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang 212013, PR China
| | - Henan Li
- School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang 212013, PR China
| | - Xingyi Huang
- School of Food and Biological Engineering, Jiangsu University, Zhenjiang 212013, PR China.
| | - Kun Wang
- School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang 212013, PR China.
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Qian J, Ren C, Wang C, Chen W, Lu X, Li H, Liu Q, Hao N, Li H, Wang K. Magnetically controlled fluorescence aptasensor for simultaneous determination of ochratoxin A and aflatoxin B1. Anal Chim Acta 2018; 1019:119-127. [PMID: 29625677 DOI: 10.1016/j.aca.2018.02.063] [Citation(s) in RCA: 55] [Impact Index Per Article: 9.2] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2017] [Revised: 02/09/2018] [Accepted: 02/15/2018] [Indexed: 01/07/2023]
Abstract
Development of an efficient method for the simultaneous detection of two highly concerning mycotoxins, ochratoxin A (OTA) and aflatoxin B1 (AFB1), is of great significance on food safety monitoring. Herein, a magnetically controlled fluorescence aptasensor for simultaneous determination of OTA and AFB1 has been successfully developed. The working principle of the aptasensor is based on the specific aptamer-mycotoxin recognition and further leads to the partial release of two distinguishable fluorescence labels from the magnetic carriers. Through the magnetic separation, the reporter probes in the supernatant solution can be collected and converted into a sensitive fluorescence signal with dual emission peaks. This aptasensor provided a wide detection range of 2 pg mL-1 - 5 ng mL-1 for OTA and 5 pg mL-1 - 10 ng mL-1 for AFB1. The new easy-to-wash and simple-to-use approach offers a simultaneous and high selective detection with high sensitivity (limits of detection of 0.67 and 1.70 pg mL-1 for OTA and AFB1, respectively). Remarkable accuracy (relative standard deviation < 5.6%) during the mycotoxins determination as well as excellent quantitative recoveries (95-108%) during the analysis of the spiked corn samples were also achieved. This simple aptasensing scheme provides a new avenue for high throughput screen of dual mycotoxins due to its simple manipulation, short assay times, high selectivity and sensitivity.
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Affiliation(s)
- Jing Qian
- School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang 212013, PR China.
| | - Chanchan Ren
- School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang 212013, PR China
| | - Chengquan Wang
- School of Food and Biological Engineering, Jiangsu University, Zhenjiang 212013, PR China
| | - Wei Chen
- School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang 212013, PR China
| | - Xiaoting Lu
- School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang 212013, PR China
| | - Henan Li
- School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang 212013, PR China
| | - Qian Liu
- School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang 212013, PR China
| | - Nan Hao
- School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang 212013, PR China
| | - Huaming Li
- School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang 212013, PR China
| | - Kun Wang
- School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang 212013, PR China.
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Ultrasensitive detection of aflatoxin B1 and its major metabolite aflatoxin M1 using aptasensors: A review. Trends Analyt Chem 2018. [DOI: 10.1016/j.trac.2017.12.009] [Citation(s) in RCA: 68] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
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Chen Q, Yang M, Yang X, Li H, Guo Z, Rahma MH. A large Raman scattering cross-section molecular embedded SERS aptasensor for ultrasensitive Aflatoxin B1 detection using CS-Fe 3O 4 for signal enrichment. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2018; 189:147-153. [PMID: 28806700 DOI: 10.1016/j.saa.2017.08.029] [Citation(s) in RCA: 63] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/19/2017] [Revised: 08/02/2017] [Accepted: 08/09/2017] [Indexed: 05/25/2023]
Abstract
With growing concern on oil safety problems, developing a simple and sensitive method to detect Aflatoxin B1 (AFB1), a common mycotoxin in peanut oil, is very necessary. In this study, Surface-enhanced Raman Scattering (SERS) aptasensor was developed for ultrasensitive AFB1 detection using the amino-terminal AFB1 aptamer (NH2-DNA1); and thiol-terminal AFB1 complementary aptamer (SH-DNA2) conjugated magnetic-beads (CS-Fe3O4) as enrichment nanoprobe and AuNR@DNTB@Ag nanorods (ADANRs) as reporter nanoprobe respectively. 5,5'-Dithiobis(2-nitrobenzoicacid) (DNTB) with large Raman scattering cross-section and no fluorescence interference was embedded in Au and Ag core/shell nanorods as Raman reporter molecules. CS-Fe3O4 possessed excellent biocompatibility and superparamagnetism for rapid signal enrichment. Therefore, NH2-DNA1-CS-Fe3O4 and SH-DNA2-ADANRs were fabricated via the hybrid reaction between aptamers and complementary aptamers. When there is AFB1, AFB1 would competitively combine with the NH2-DNA1-CS-Fe3O4 inducing the dissociation of SH-DNA2-ADANRs from CS-Fe3O4 and further decreasing the SERS signal. Based on this developed SERS aptasensor, a low limit of 0.0036ng/mL and an effective linear detection range from 0.01 to 100ng/mL with the correlation coefficient up to 0.986 for AFB1 detection were obtained. Moreover, the specificity of this SERS aptasensor was demonstrated by detecting other two mycotoxins and its accuracy for AFB1 detection in real peanut oil was further confirmed by standard addition recovery test.
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Affiliation(s)
- Quansheng Chen
- School of Food and Biological engineering, Jiangsu University, Zhenjiang 212013, PR China.
| | - Mingxiu Yang
- School of Food and Biological engineering, Jiangsu University, Zhenjiang 212013, PR China
| | - Xiaojing Yang
- School of Food and Biological engineering, Jiangsu University, Zhenjiang 212013, PR China
| | - Huanhuan Li
- School of Food and Biological engineering, Jiangsu University, Zhenjiang 212013, PR China
| | - Zhiming Guo
- School of Food and Biological engineering, Jiangsu University, Zhenjiang 212013, PR China
| | - M H Rahma
- School of Food and Biological engineering, Jiangsu University, Zhenjiang 212013, PR China
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Evtugyn GA, Porfireva AV, Stoikov II. Electrochemical DNA sensors based on spatially distributed redox mediators: challenges and promises. PURE APPL CHEM 2017. [DOI: 10.1515/pac-2016-1124] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
AbstractDNA and aptasensors are widely used for fast and reliable detection of disease biomarkers, pharmaceuticals, toxins, metabolites and other species necessary for biomedical diagnostics. In the overview, the concept of spatially distributed redox mediators is considered with particular emphasis to the signal generation and biospecific layer assembling. The application of non-conductive polymers bearing redox labels, supramolecular carriers with attached DNA aptamers and redox active dyes and E-sensor concept are considered as examples of the approach announced.
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Affiliation(s)
- Gennady A. Evtugyn
- A.M.Butlerov’ Chemistry Institute of Kazan Federal University, 420008 Kazan, Russian Federation
| | - Anna V. Porfireva
- A.M.Butlerov’ Chemistry Institute of Kazan Federal University, 420008 Kazan, Russian Federation
| | - Ivan I. Stoikov
- A.M.Butlerov’ Chemistry Institute of Kazan Federal University, 420008 Kazan, Russian Federation
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Malekzad H, Jouyban A, Hasanzadeh M, Shadjou N, de la Guardia M. Ensuring food safety using aptamer based assays: Electroanalytical approach. Trends Analyt Chem 2017; 94:77-94. [PMID: 32287541 PMCID: PMC7112916 DOI: 10.1016/j.trac.2017.07.001] [Citation(s) in RCA: 37] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
Aptamers, are being increasingly employed as favorable receptors for constructing highly sensitive biosensors, for their remarkable affinities towards certain targets including a wide scope of biological or chemical substances, and their superiority over other biologic receptors. The selectivity and affinity of the aptamers have been integrated with the wise design of the assay, applying suitable modifications, such as nanomaterials on the electrode surface, employing oligonucleotide-specific amplification strategies or, their combinations. After successful performance of the electrochemical aptasensors for biomedical applications, the food sector with its direct implication for human health, which demands rapid and sensitive and economic analytical solutions for determination of health threatening contaminants in all stages of production process, is the next field of research for developing efficient electrochemical aptasensors. The aim of this review is to categorize and introduce food hazards and summarize the recent electrochemical aptasensors that have been developed to address these contaminants.
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Affiliation(s)
- Hedieh Malekzad
- Pharmaceutical Analysis Research Center and Faculty of Pharmacy, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Abolghasem Jouyban
- Pharmaceutical Analysis Research Center and Faculty of Pharmacy, Tabriz University of Medical Sciences, Tabriz, Iran
- Kimia Idea Pardaz Azarbayjan (KIPA) Science Based Company, Tabriz University of Medical Sciences, Tabriz 51664, Iran
| | - Mohammad Hasanzadeh
- Drug Applied Research Center, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Nasrin Shadjou
- Department of Nanochemistry, Nano Technology Research Center, Urmia University, Urmia, Iran
- Department of Nanochemistry, Faculty of Science, Urmia University, Urmia, Iran
| | - Miguel de la Guardia
- Department of Analytical Chemistry, University of Valencia, Dr. Moliner 50, Burjassot 46100, Valencia, Spain
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Yang M, Liu G, Mehedi HM, Ouyang Q, Chen Q. A universal SERS aptasensor based on DTNB labeled GNTs/Ag core-shell nanotriangle and CS-Fe 3 O 4 magnetic-bead trace detection of Aflatoxin B1. Anal Chim Acta 2017; 986:122-130. [DOI: 10.1016/j.aca.2017.07.016] [Citation(s) in RCA: 55] [Impact Index Per Article: 7.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2017] [Revised: 06/29/2017] [Accepted: 07/11/2017] [Indexed: 10/19/2022]
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Ferreira IM, de Sousa Lacerda CM, Dos Santos SR, de Barros ALB, Fernandes SO, Cardoso VN, de Andrade ASR. Detection of bacterial infection by a technetium-99m-labeled peptidoglycan aptamer. Biomed Pharmacother 2017; 93:931-938. [PMID: 28715874 DOI: 10.1016/j.biopha.2017.07.017] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2017] [Revised: 07/05/2017] [Accepted: 07/05/2017] [Indexed: 10/19/2022] Open
Abstract
Nuclear medicine clinicians are still waiting for the optimal scintigraphic imaging agents capable of distinguishing between infection and inflammation, and between fungal and bacterial infections. Aptamers have several properties that make them suitable for molecular imaging. In the present study, a peptidoglycan aptamer (Antibac1) was labeled with 99mTc and evaluated by biodistribution studies and scintigraphic imaging in infection-bearing mice. Labeling with 99mTc was performed by the direct method and the complex stability was evaluated in saline, plasma and in the molar excess of cysteine. The biodistribution and scintigraphic imaging studies with the 99mTc-Antibac1 were carried out in two different experimental infection models: Bacterial-infected mice (S. aureus) and fungal-infected mice (C. albicans). A 99mTc radiolabeled library, consisting of oligonucleotides with random sequences, was used as a control for both models. Radiolabeling yields were superior to 90% and 99mTc-Antibac1 was highly stable in presence of saline, plasma, and cysteine up to 6h. Scintigraphic images of S. aureus infected mice at 1.5 and 3.0h after 99mTc-Antibac1 injection showed target to non-target ratios of 4.7±0.9 and 4.6±0.1, respectively. These values were statistically higher than those achieved for the 99mTc-library at the same time frames (1.6±0.4 and 1.7±0.4, respectively). Noteworthy, 99mTc-Antibac1 and 99mTc-library showed similar low target to non-target ratios in the fungal-infected model: 2.0±0.3 and 2.0±0.6for 99mTc-Antibac1 and 2.1±0.3 and 1.9 ± 0.6 for 99mTc-library, at the same times. These findings suggest that the 99mTc-Antibac1 is a feasible imaging probe to identify a bacterial infection focus. In addition, this radiolabeled aptamer seems to be suitable in distinguishing between bacterial and fungal infection.
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Affiliation(s)
- Iêda Mendes Ferreira
- Centro de Desenvolvimento da Tecnologia Nuclear (CDTN), Rua Professor Mário Werneck S/N°, Cidade Universitária, Campus da UFMG, 31120-970, Belo Horizonte, MG, Brazil.
| | - Camila Maria de Sousa Lacerda
- Centro de Desenvolvimento da Tecnologia Nuclear (CDTN), Rua Professor Mário Werneck S/N°, Cidade Universitária, Campus da UFMG, 31120-970, Belo Horizonte, MG, Brazil.
| | - Sara Roberta Dos Santos
- Centro de Desenvolvimento da Tecnologia Nuclear (CDTN), Rua Professor Mário Werneck S/N°, Cidade Universitária, Campus da UFMG, 31120-970, Belo Horizonte, MG, Brazil.
| | - André Luís Branco de Barros
- Departamento de Análises Clínicas e Toxicológicas, Faculdade de Farmácia, Universidade Federal de Minas Gerais, Cidade Universitária, Campus da UFMG, 31270-091, Belo Horizonte, MG, Brazil.
| | - Simone Odília Fernandes
- Departamento de Análises Clínicas e Toxicológicas, Faculdade de Farmácia, Universidade Federal de Minas Gerais, Cidade Universitária, Campus da UFMG, 31270-091, Belo Horizonte, MG, Brazil.
| | - Valbert Nascimento Cardoso
- Departamento de Análises Clínicas e Toxicológicas, Faculdade de Farmácia, Universidade Federal de Minas Gerais, Cidade Universitária, Campus da UFMG, 31270-091, Belo Horizonte, MG, Brazil.
| | - Antero Silva Ribeiro de Andrade
- Centro de Desenvolvimento da Tecnologia Nuclear (CDTN), Rua Professor Mário Werneck S/N°, Cidade Universitária, Campus da UFMG, 31120-970, Belo Horizonte, MG, Brazil.
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Electrochemical aptasensors for contaminants detection in food and environment: Recent advances. Bioelectrochemistry 2017; 118:47-61. [PMID: 28715665 DOI: 10.1016/j.bioelechem.2017.07.004] [Citation(s) in RCA: 102] [Impact Index Per Article: 14.6] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2017] [Revised: 07/10/2017] [Accepted: 07/11/2017] [Indexed: 12/26/2022]
Abstract
The growing number of contaminants requires the development of new analytical tools to meet the increasing demand for legislative actions on food safety and environmental pollution control. In this context, electrochemical aptamer-based sensors appear promising among all biosensors because they permit multiplexed analysis and provide fast response, sensitivity, specificity and low cost. The aim of this review is to give the readers an overview of recent important achievements in the development of electrochemical aptamer-based biosensors for contaminant detection over the last two years. Special emphasis is placed on aptasensors based on screen-printed electrodes which show a substantial improvement of analytical performances.
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48
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From Electrochemistry to Electroluminescence: Development and Application in a Ratiometric Aptasensor for Aflatoxin B1. Anal Chem 2017. [DOI: 10.1021/acs.analchem.7b01399] [Citation(s) in RCA: 106] [Impact Index Per Article: 15.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
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Santos SRD, de Sousa Lacerda CM, Ferreira IM, de Barros ALB, Fernandes SO, Cardoso VN, de Andrade ASR. Scintigraphic imaging of Staphylococcus aureus infection using 99mTc radiolabeled aptamers. Appl Radiat Isot 2017; 128:22-27. [PMID: 28683356 DOI: 10.1016/j.apradiso.2017.06.043] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2017] [Revised: 05/09/2017] [Accepted: 06/27/2017] [Indexed: 01/31/2023]
Abstract
Staphylococcus aureus is a specie of great medical importance associated with many infections as bacteremia and infective endocarditis as well as osteoarticular, skin and soft tissue, pleuropulmonary, and device related infections. Early identification of infectious foci is crucial for successful treatment. Scintigraphy could contribute to this purpose since specific radiotracers were available. Aptamers due to their high specificity have great potential for radiopharmaceuticals development. In the present study scintigraphic images of S. aureus infectious foci were obtained using specific S. aureus aptamers radiolabeled with 99mTc.
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Affiliation(s)
- Sara Roberta Dos Santos
- Centro de Desenvolvimento da Tecnologia Nuclear (CDTN), Rua Professor Mário Werneck S/No, Cidade Universitária-Campus da UFMG, 31120-970 Belo Horizonte, MG, Brazil.
| | - Camila Maria de Sousa Lacerda
- Centro de Desenvolvimento da Tecnologia Nuclear (CDTN), Rua Professor Mário Werneck S/No, Cidade Universitária-Campus da UFMG, 31120-970 Belo Horizonte, MG, Brazil.
| | - Iêda Mendes Ferreira
- Centro de Desenvolvimento da Tecnologia Nuclear (CDTN), Rua Professor Mário Werneck S/No, Cidade Universitária-Campus da UFMG, 31120-970 Belo Horizonte, MG, Brazil.
| | - André Luís Branco de Barros
- Departamento de Análises Clínicas e Toxicológicas - Faculdade de Farmácia, Universidade Federal de Minas Gerais (UFMG), Cidade Universitária - Campus da UFMG, 31270-091 Belo Horizonte, MG, Brazil.
| | - Simone Odília Fernandes
- Departamento de Análises Clínicas e Toxicológicas - Faculdade de Farmácia, Universidade Federal de Minas Gerais (UFMG), Cidade Universitária - Campus da UFMG, 31270-091 Belo Horizonte, MG, Brazil.
| | - Valbert Nascimento Cardoso
- Departamento de Análises Clínicas e Toxicológicas - Faculdade de Farmácia, Universidade Federal de Minas Gerais (UFMG), Cidade Universitária - Campus da UFMG, 31270-091 Belo Horizonte, MG, Brazil.
| | - Antero Silva Ribeiro de Andrade
- Centro de Desenvolvimento da Tecnologia Nuclear (CDTN), Rua Professor Mário Werneck S/No, Cidade Universitária-Campus da UFMG, 31120-970 Belo Horizonte, MG, Brazil.
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Mukherjee M, Bhatt P, H K M. Fluorescent competitive aptasensor for detection of aflatoxin B 1. J Mol Recognit 2017. [PMID: 28643851 DOI: 10.1002/jmr.2650] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
Aflatoxin B1 (AFB1 ) is one of the most commonly found mycotoxins in food commodities, particularly cereals, oilseeds, spices and tree nuts. In the past decade, aptamers have come into limelight and emerged as a new biosensing element replacing antibodies in various detection formats. Herein we report a faster, more sensitive, high throughput method for the detection of AFB1 using AFB1 -specific aptamers. The assay format was based on a competitive reaction of the fluorescent tagged aptamer specific to AFB1 with the aflatoxin conjugate. Under optimal conditions, a linear range of detection (50 ng to 50 pg) was achieved with a limit of detection (LOD) of 10 pg/mL in the buffer system. Results of inter- and intra-assay revealed that the assay was repeatable with standard deviation in acceptable range. The assay was also validated in food samples such as dried red chilies, groundnut and whole pepper with recovery in the range of 92 to 102% at 10 ng/mL and 100 pg/mL levels. The aptasensor assay was also compared with standard analytical method of HPLC and was found to be more sensitive. This detection technique has the potential to be developed into a biosensor platform for AFB1 detection.
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Affiliation(s)
- Monali Mukherjee
- Academy of Scientific and Innovative Research (AcSIR), CSIR-Central Food Technological Research Institute (CFTRI), Mysuru, 570020, India.,Microbiology and Fermentation Technology Department, CSIR-Central Food Technological Research Institute (CFTRI), Mysuru, 570020, India
| | - Praveena Bhatt
- Academy of Scientific and Innovative Research (AcSIR), CSIR-Central Food Technological Research Institute (CFTRI), Mysuru, 570020, India.,Microbiology and Fermentation Technology Department, CSIR-Central Food Technological Research Institute (CFTRI), Mysuru, 570020, India
| | - Manonmani H K
- Academy of Scientific and Innovative Research (AcSIR), CSIR-Central Food Technological Research Institute (CFTRI), Mysuru, 570020, India.,Food Protectants and Infestation Control Department, CSIR-Central Food Technological Research Institute (CFTRI), Mysuru, 570020, India
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