1
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Zhang D, Luo T, Cai X, Zhao NN, Zhang CY. Recent advances in nucleic acid signal amplification-based aptasensors for sensing mycotoxins. Chem Commun (Camb) 2024; 60:4745-4764. [PMID: 38647208 DOI: 10.1039/d4cc00982g] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/25/2024]
Abstract
Mycotoxin contamination in food products may cause serious health hazards and economic losses. The effective control and accurate detection of mycotoxins have become a global concern. Even though a variety of methods have been developed for mycotoxin detection, most conventional methods suffer from complicated operation procedures, low sensitivity, high cost, and long assay time. Therefore, the development of simple and sensitive methods for mycotoxin assay is highly needed. The introduction of nucleic acid signal amplification technology (NASAT) into aptasensors significantly improves the sensitivity and facilitates the detection of mycotoxins. Herein, we give a comprehensive review of the recent advances in NASAT-based aptasensors for assaying mycotoxins and summarize the principles, features, and applications of NASAT-based aptasensors. Moreover, we highlight the challenges and prospects in the field, including the simultaneous detection of multiple mycotoxins and the development of portable devices for field detection.
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Affiliation(s)
- Dandan Zhang
- College of Materials and Chemistry & Chemical Engineering, Chengdu University of Technology, Chengdu 610059, Sichuan, China
| | - Ting Luo
- College of Materials and Chemistry & Chemical Engineering, Chengdu University of Technology, Chengdu 610059, Sichuan, China
| | - Xiangyue Cai
- College of Materials and Chemistry & Chemical Engineering, Chengdu University of Technology, Chengdu 610059, Sichuan, China
| | - Ning-Ning Zhao
- College of Chemistry, Chemical Engineering and Materials Science, Shandong Normal University, Jinan 250014, China.
| | - Chun-Yang Zhang
- School of Chemistry and Chemical Engineering, Southeast University, Nanjing, 211189, China.
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2
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Cui W, Liu J, Zhao W, Zhang J, Wang Y, Li Q, Wang R, Qiao M, Xu S. An enzyme-free and label-free fluorescent aptasensor for sensitive detection of kanamycin in milk samples based on hybridization chain reaction. J Food Compost Anal 2023. [DOI: 10.1016/j.jfca.2023.105300] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/31/2023]
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3
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Wu R, Guo J, Wang M, Liu H, Ding L, Yang R, Liu LE, Liu Z. Fluorescent Sensor Based on Magnetic Separation and Strand Displacement Amplification for the Sensitive Detection of Ochratoxin A. ACS OMEGA 2023; 8:15741-15750. [PMID: 37151502 PMCID: PMC10157876 DOI: 10.1021/acsomega.3c01408] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/02/2023] [Accepted: 04/11/2023] [Indexed: 05/09/2023]
Abstract
Ochratoxin A (OTA) is a common mycotoxin, and it is a significant threat to human health throughout the food chain. In this study, a sensitive and specific fluorescent sensor based on magnetic separation technology combined with chain displacement amplification was developed for fast and easy detection of OTA in food. The designed strand displacement amplification can improve the sensitivity for the detection, and the magnetic nanomaterials can provide a large surface area, thus enhancing the capture efficiency of the target from the sample. Based on those designs, the experimental results showed that the proposed method displayed excellent performance. The linearity range was 0.5-128.0 ng/mL. The detection limit was 0.125 ng/mL; the relative standard deviations were 3.92-7.71%. Additionally, the developed method was satisfactorily applied to determine OTA in wheat, corn, and red wine samples at three spiked levels (1.0, 8.0, and 64.0 ng/mL). The recoveries ranged from 85.45 to 107.8% for wheat flour, 101.34 to 108.35% for corn flour, and 91.15 to 93.80% for red wine, respectively. Compared with high-performance liquid chromatography, the proposed method showed a lower limit of detection and equal recovery. Hence, the designed method is a potential and good detecting tool for OTA residue analysis in complex matrix samples.
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Affiliation(s)
- Ruoyu Wu
- College
of Public Health, Zhengzhou University, Zhengzhou 450001, People’s Republic of China
| | - Jiaping Guo
- College
of Public Health, Zhengzhou University, Zhengzhou 450001, People’s Republic of China
| | - Minkai Wang
- Department
of Neurosurgery, First Affiliated Hospital
of Zhengzhou University, Zhengzhou, Henan 450052, People’s Republic of China
| | - Huimin Liu
- College
of Public Health, Zhengzhou University, Zhengzhou 450001, People’s Republic of China
| | - Lihua Ding
- College
of Public Health, Zhengzhou University, Zhengzhou 450001, People’s Republic of China
| | - Ruiying Yang
- College
of Public Health, Zhengzhou University, Zhengzhou 450001, People’s Republic of China
| | - Li-e Liu
- College
of Public Health, Zhengzhou University, Zhengzhou 450001, People’s Republic of China
| | - Zhiyong Liu
- Key
Laboratory of Food Safety Quick Testing and Smart Supervision Technology
for State Market Regulation, Beijing 100094, People’s
Republic of China
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4
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Vardali S, Papadouli C, Rigos G, Nengas I, Panagiotaki P, Golomazou E. Recent Advances in Mycotoxin Determination in Fish Feed Ingredients. Molecules 2023; 28:molecules28062519. [PMID: 36985489 PMCID: PMC10053411 DOI: 10.3390/molecules28062519] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2023] [Revised: 03/05/2023] [Accepted: 03/07/2023] [Indexed: 03/12/2023] Open
Abstract
Low-cost plant-based sources used in aquaculture diets are prone to the occurrence of animal feed contaminants, which may in certain conditions affect the quality and safety of aquafeeds. Mycotoxins, a toxic group of small organic molecules produced by fungi, comprise a frequently occurring plant-based feed contaminant in aquafeeds. Mycotoxin contamination can potentially cause significant mortality, reduced productivity, and higher disease susceptibility; thus, its timely detection is crucial to the aquaculture industry. The present review summarizes the methodological advances, developed mainly during the past decade, related to mycotoxin detection in aquafeed ingredients, namely analytical, chromatographic, and immunological methodologies, as well as the use of biosensors and spectroscopic methods which are becoming more prevalent. Rapid and accurate mycotoxin detection is and will continue to be crucial to the food industry, animal production, and the environment, resulting in further improvements and developments in mycotoxin detection techniques.
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Affiliation(s)
- Sofia Vardali
- Department of Ichthyology and Aquatic Environment—Aquaculture Laboratory, School of Agricultural Sciences, University of Thessaly, 38446 Volos, Greece
- Correspondence: (S.V.); (E.G.)
| | - Christina Papadouli
- Department of Ichthyology and Aquatic Environment—Aquaculture Laboratory, School of Agricultural Sciences, University of Thessaly, 38446 Volos, Greece
| | - George Rigos
- Institute of Marine Biology, Biotechnology and Aquaculture, Hellenic Centre for Marine Research, 46.7 km Athens-Sounion, 19013 Attiki, Greece
| | - Ioannis Nengas
- Institute of Marine Biology, Biotechnology and Aquaculture, Hellenic Centre for Marine Research, 46.7 km Athens-Sounion, 19013 Attiki, Greece
| | - Panagiota Panagiotaki
- Department of Ichthyology and Aquatic Environment—Aquaculture Laboratory, School of Agricultural Sciences, University of Thessaly, 38446 Volos, Greece
| | - Eleni Golomazou
- Department of Ichthyology and Aquatic Environment—Aquaculture Laboratory, School of Agricultural Sciences, University of Thessaly, 38446 Volos, Greece
- Correspondence: (S.V.); (E.G.)
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5
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Zhang N, Li J, Liu B, Zhang D, Zhang C, Guo Y, Chu X, Wang W, Wang H, Yan X, Li Z. Signal enhancing strategies in aptasensors for the detection of small molecular contaminants by nanomaterials and nucleic acid amplification. Talanta 2022; 236:122866. [PMID: 34635248 DOI: 10.1016/j.talanta.2021.122866] [Citation(s) in RCA: 20] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2021] [Revised: 09/05/2021] [Accepted: 09/08/2021] [Indexed: 12/20/2022]
Abstract
Small molecular contaminants (such as mycotoxins, antibiotics, pesticide residues, etc.) in food and environment have given rise to many biological and ecological toxicities, which has attracted worldwide attention in recent years. Meanwhile, due to the advantages of aptamers such as high specificity and stability, easy synthesis and modification, as well as low cost and immunogenicity, various aptasensors for the detection of small molecular contaminants have been flourishing. An aptasensor as a whole is composed of an aptamer-based target recognizer and a signal transducer, which are fields of concentrated research. In the practical detection applications, in order to achieve the quantitative detection of small molecular contaminants at low abundance in real samples, a large number of signal enhancing strategies have been utilized in the development of aptasensors. Recent years is a vintage period for efficient signal enhancing strategies of aptasensors by the aid of nanomaterials and nucleic acid amplification that are applied in the elements for target recognition and signal conversion. Therefore, this paper meticulously reviews the signal enhancing strategies based on nanomaterials (including the (quasi-)zero-dimensional, one-dimensional, two-dimensional and three-dimensional nanomaterials) and nucleic acid amplification (including enzyme-assisted nucleic acid amplification and enzyme-free nucleic acid amplification). Furthermore, the challenges and future trends of the abovementioned signal enhancing strategies for application are also discussed in order to inspire the practitioners in the research and development of aptasensors for small molecular contaminants.
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Affiliation(s)
- Nan Zhang
- College of Pharmaceutical Engineering of Traditional Chinese Medicine, Tianjin University of Traditional Chinese Medicine, Tianjin, 301617, China
| | - Jingrong Li
- College of Pharmaceutical Engineering of Traditional Chinese Medicine, Tianjin University of Traditional Chinese Medicine, Tianjin, 301617, China
| | - Boshi Liu
- College of Pharmaceutical Engineering of Traditional Chinese Medicine, Tianjin University of Traditional Chinese Medicine, Tianjin, 301617, China; State Key Laboratory of Component-based Chinese Medicine, Tianjin University of Traditional Chinese Medicine, Tianjin, 301617, China.
| | - Di Zhang
- College of Pharmaceutical Engineering of Traditional Chinese Medicine, Tianjin University of Traditional Chinese Medicine, Tianjin, 301617, China; State Key Laboratory of Component-based Chinese Medicine, Tianjin University of Traditional Chinese Medicine, Tianjin, 301617, China
| | - Chengyu Zhang
- State Key Laboratory of Component-based Chinese Medicine, Tianjin University of Traditional Chinese Medicine, Tianjin, 301617, China
| | - Yuheng Guo
- College of Pharmaceutical Engineering of Traditional Chinese Medicine, Tianjin University of Traditional Chinese Medicine, Tianjin, 301617, China
| | - Xinhong Chu
- College of Pharmaceutical Engineering of Traditional Chinese Medicine, Tianjin University of Traditional Chinese Medicine, Tianjin, 301617, China
| | - Wenting Wang
- College of Pharmaceutical Engineering of Traditional Chinese Medicine, Tianjin University of Traditional Chinese Medicine, Tianjin, 301617, China
| | - Haixia Wang
- College of Pharmaceutical Engineering of Traditional Chinese Medicine, Tianjin University of Traditional Chinese Medicine, Tianjin, 301617, China; State Key Laboratory of Component-based Chinese Medicine, Tianjin University of Traditional Chinese Medicine, Tianjin, 301617, China
| | - Xiaohui Yan
- State Key Laboratory of Component-based Chinese Medicine, Tianjin University of Traditional Chinese Medicine, Tianjin, 301617, China.
| | - Zheng Li
- College of Pharmaceutical Engineering of Traditional Chinese Medicine, Tianjin University of Traditional Chinese Medicine, Tianjin, 301617, China; State Key Laboratory of Component-based Chinese Medicine, Tianjin University of Traditional Chinese Medicine, Tianjin, 301617, China.
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6
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Zhao H, Qiao X, Zhang X, Niu C, Yue T, Sheng Q. Simultaneous electrochemical aptasensing of patulin and ochratoxin A in apple juice based on gold nanoparticles decorated black phosphorus nanomaterial. Anal Bioanal Chem 2021; 413:3131-3140. [PMID: 33715040 DOI: 10.1007/s00216-021-03253-3] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2021] [Revised: 02/23/2021] [Accepted: 02/25/2021] [Indexed: 11/30/2022]
Abstract
Simultaneous detection of patulin (PAT) and ochratoxin A (OTA) in food products is in great demand, which can prevent toxins from being exposed to human and animal bodies. However, simultaneous detection of multiple targets still faces a challenge. Herein, we developed a novel electrochemical aptasensor for the simultaneous detection of PAT and OTA in apple juice based on gold nanoparticles decorated black phosphorus (AuNPs-BP) nanomaterial. AuNPs-BP function?/work? as a sensing platform for loading much different electrochemical signal molecules functionalized aptamers. In this context, methylene blue functionalized PAT aptamers (Mb-PAT-aptamers) and ferrocene functionalized OTA aptamers (Fc-OTA-aptamers) have been introduced here to fabricate the aptasensor. Fc close to electrode surface showed a strong signal, whereas Mb was far away from electrode surface so exhibited a weak signal in the absence of OTA and PAT. Two kinds of electrochemical signal changes have been recorded dependent on target of OTA and PAT concentrations. So, simultaneous detection of OTA and PAT is achieved. Under the optimum conditions, using this developed biosensor, PAT and OTA can be quantified at a linearity range of 0.01 × 10-7 μg·mL-1 ~ 0.10 μg·mL-1. In addition, it also has good selectivity, stability and repeatability. For the practical application, it shows promising performance for the simultaneous detection of PAT and OTA in apple juice.
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Affiliation(s)
- Haiyan Zhao
- College of Chemistry & Materials Science/Key Laboratory of Synthetic and Natural Functional Molecule Chemistry of Ministry of Education/Shaanxi Provincial Key Laboratory of Electroanalytical Chemistry, Northwest University, Xi'an, 710069, Shaanxi, China
| | - Xiujuan Qiao
- College of Chemistry & Materials Science/Key Laboratory of Synthetic and Natural Functional Molecule Chemistry of Ministry of Education/Shaanxi Provincial Key Laboratory of Electroanalytical Chemistry, Northwest University, Xi'an, 710069, Shaanxi, China
| | - Xuelian Zhang
- College of Food Science and Technology, Northwest University, Xi'an, 710069, Shaanxi, China
| | - Chen Niu
- College of Food Science and Technology, Northwest University, Xi'an, 710069, Shaanxi, China
| | - Tianli Yue
- College of Food Science and Technology, Northwest University, Xi'an, 710069, Shaanxi, China.
| | - Qinglin Sheng
- College of Food Science and Technology, Northwest University, Xi'an, 710069, Shaanxi, China.
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7
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Khataee A, Sohrabi H, Arbabzadeh O, Khaaki P, Majidi MR. Frontiers in conventional and nanomaterials based electrochemical sensing and biosensing approaches for Ochratoxin A analysis in foodstuffs: A review. Food Chem Toxicol 2021; 149:112030. [DOI: 10.1016/j.fct.2021.112030] [Citation(s) in RCA: 26] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2020] [Revised: 01/19/2021] [Accepted: 01/24/2021] [Indexed: 12/22/2022]
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8
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Lai W, Guo J, Qiao Z, Chen X, Wang S, Wu L, Cai Q, Ye S, Lin Y, Tang D. A novel colorimetric immunoassay for sensitive monitoring of ochratoxin A based on an enzyme-controlled citrate-iron( iii) chelating system. NEW J CHEM 2021. [DOI: 10.1039/d1nj02291a] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
Schematic illustration of an enzyme-controlled citrate-iron(iii) chelating system-based colorimetric immunoassay for sensitive determination of ochratoxin A.
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9
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10
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Wang W, Wang X, Cheng N, Luo Y, Lin Y, Xu W, Du D. Recent advances in nanomaterials-based electrochemical (bio)sensors for pesticides detection. Trends Analyt Chem 2020. [DOI: 10.1016/j.trac.2020.116041] [Citation(s) in RCA: 58] [Impact Index Per Article: 14.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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11
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Yan C, Wang Q, Yang Q, Wu W. Recent Advances in Aflatoxins Detection Based on Nanomaterials. NANOMATERIALS 2020; 10:nano10091626. [PMID: 32825088 PMCID: PMC7558307 DOI: 10.3390/nano10091626] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/14/2020] [Revised: 08/14/2020] [Accepted: 08/16/2020] [Indexed: 12/31/2022]
Abstract
Aflatoxins are the secondary metabolites of Aspergillus flavus and Aspergillus parasiticus and are highly toxic and carcinogenic, teratogenic and mutagenic. Ingestion of crops and food contaminated by aflatoxins causes extremely serious harm to human and animal health. Therefore, there is an urgent need for a selective, sensitive and simple method for the determination of aflatoxins. Due to their high performance and multipurpose characteristics, nanomaterials have been developed and applied to the monitoring of various targets, overcoming the limitations of traditional methods, which include process complexity, time-consuming and laborious methodologies and the need for expensive instruments. At the same time, nanomaterials provide general promise for the detection of aflatoxins with high sensitivity, selectivity and simplicity. This review provides an overview of recent developments in nanomaterials employed for the detection of aflatoxins. The basic aspects of aflatoxin toxicity and the significance of aflatoxin detection are also reviewed. In addition, the development of different biosensors and nanomaterials for aflatoxin detection is introduced. The current capabilities and limitations and future challenges in aflatoxin detection and analysis are also addressed.
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Affiliation(s)
- Chunlei Yan
- College of Food Science and Engineering, Qingdao Agricultural University, Qingdao 266109, China; (C.Y.); (Q.W.)
| | - Qi Wang
- College of Food Science and Engineering, Qingdao Agricultural University, Qingdao 266109, China; (C.Y.); (Q.W.)
| | - Qingli Yang
- College of Food Science and Engineering, Qingdao Agricultural University, Qingdao 266109, China; (C.Y.); (Q.W.)
- Correspondence: (Q.Y.); (W.W.)
| | - Wei Wu
- College of Food Science and Engineering, Qingdao Agricultural University, Qingdao 266109, China; (C.Y.); (Q.W.)
- State Key Laboratory of Bio-Fibers and Eco-Textiles, Institute of Biochemical Engineering, College of Materials Science and Engineering, Qingdao University, Qingdao 266071, China
- Correspondence: (Q.Y.); (W.W.)
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12
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Jiang M, Chen C, He J, Zhang H, Xu Z. Fluorescence assay for three organophosphorus pesticides in agricultural products based on Magnetic-Assisted fluorescence labeling aptamer probe. Food Chem 2020; 307:125534. [PMID: 31644980 DOI: 10.1016/j.foodchem.2019.125534] [Citation(s) in RCA: 37] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2019] [Revised: 07/24/2019] [Accepted: 09/12/2019] [Indexed: 11/29/2022]
Abstract
There has been increasing recent concern about the agricultural use of organophosphorus pesticides. A rapid and sensitive fluorescence assay for the detection of three organophosphorus pesticides has therefore been developed using 6-carboxy-fluorescein labeling aptamer as the probe and functionalized magnetic nanoparticles as the separation carrier. The aptamer hybridized with complementary DNA conjugated on the surface of the magnetic nanoparticles to form a magnetic aptamer-complementary DNA complex. Upon introducing the target organophosphorus pesticide, the aptamer departed from the complementary DNA, resulting in the fluorescence signal. Under optimized conditions, the limits of detection (LODs, S/N = 3) for trichlorfon, glyphosate, and malathion were 72.20 ng L-1, 88.80 ng L-1, and 195.37 ng L-1, respectively. The method was applied for the detection of trichlorfon, glyphosate, and malathion in spiked lettuce and carrot samples. The recoveries were in the range of 79.4%-118.7%, which were in good agreement with those obtained by gas chromatography, and the relative standard deviations were also acceptable. The method therefore has high sensitivity, so provides a means for the detection of multiple organophosphorus pesticides.
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Affiliation(s)
- Mingdi Jiang
- Key Laboratory of Food Processing Technology and Quality Control in Shandong Province, College of Food Science and Engineering, Shandong Agricultural University, Taian 271018, China
| | - Chen Chen
- Key Laboratory of Food Processing Technology and Quality Control in Shandong Province, College of Food Science and Engineering, Shandong Agricultural University, Taian 271018, China
| | - Jingbo He
- Key Laboratory of Food Processing Technology and Quality Control in Shandong Province, College of Food Science and Engineering, Shandong Agricultural University, Taian 271018, China
| | - Hongyan Zhang
- College of Life Science, Shandong Normal University, Jinan 250014, China
| | - Zhixiang Xu
- Key Laboratory of Food Processing Technology and Quality Control in Shandong Province, College of Food Science and Engineering, Shandong Agricultural University, Taian 271018, China.
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13
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Electrochemical biosensors based on nucleic acid aptamers. Anal Bioanal Chem 2020; 412:55-72. [PMID: 31912182 DOI: 10.1007/s00216-019-02226-x] [Citation(s) in RCA: 83] [Impact Index Per Article: 20.8] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2019] [Revised: 10/12/2019] [Accepted: 10/18/2019] [Indexed: 02/07/2023]
Abstract
During recent decades, nucleic acid aptamers have emerged as powerful biological recognition elements for electrochemical affinity biosensors. These bioreceptors emulate or improve on antibody-based biosensors because of their excellent characteristics as bioreceptors, including limitless selection capacity for a large variety of analytes, easy and cost-effective production, high stability and reproducibility, simple chemical modification, stable and oriented immobilization on electrode surfaces, enhanced target affinity and selectivity, and possibility to design them in target-sensitive 3D folded structures. This review provides an overview of the state of the art of electrochemical aptasensor technology, focusing on novel aptamer-based electroanalytical assay configurations and providing examples to illustrate the different possibilities. Future prospects for this technology are also discussed. Graphical abstract.
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14
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Lai W, Guo J, Wu Q, Chen Y, Cai Q, Wu L, Wang S, Song J, Tang D. A novel colorimetric immunoassay based on enzyme-regulated instant generation of Turnbull's blue for the sensitive determination of ochratoxin A. Analyst 2020; 145:2420-2424. [DOI: 10.1039/c9an02447f] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Abstract
The aim of this study was to develop a novel colorimetric sensing method based on enzyme-regulated instant generation of Turnbull's blue, serving as a chromogenic agent, for a sensitive immunoassay for the determination of ochratoxin A (OTA).
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Affiliation(s)
- Wenqiang Lai
- Key Laboratory of Modern Analytical Science and Separation Technology
- College of Chemistry
- Chemical Engineering and Environment
- Minnan Normal University
- Zhangzhou 363000
| | - Jiaqing Guo
- Key Laboratory of Optoelectronic Devices and Systems of Ministry of Education and Guangdong Province
- College of Physics and Optoelectronic Engineering
- Shenzhen University
- Shenzhen 518060
- P R China
| | - Qingqing Wu
- Key Laboratory of Modern Analytical Science and Separation Technology
- College of Chemistry
- Chemical Engineering and Environment
- Minnan Normal University
- Zhangzhou 363000
| | - Yaomin Chen
- Key Laboratory of Modern Analytical Science and Separation Technology
- College of Chemistry
- Chemical Engineering and Environment
- Minnan Normal University
- Zhangzhou 363000
| | - Quanying Cai
- Key Laboratory of Modern Analytical Science and Separation Technology
- College of Chemistry
- Chemical Engineering and Environment
- Minnan Normal University
- Zhangzhou 363000
| | - Luxi Wu
- Key Laboratory of Modern Analytical Science and Separation Technology
- College of Chemistry
- Chemical Engineering and Environment
- Minnan Normal University
- Zhangzhou 363000
| | - Shuhan Wang
- Key Laboratory of Modern Analytical Science and Separation Technology
- College of Chemistry
- Chemical Engineering and Environment
- Minnan Normal University
- Zhangzhou 363000
| | - Jun Song
- Key Laboratory of Optoelectronic Devices and Systems of Ministry of Education and Guangdong Province
- College of Physics and Optoelectronic Engineering
- Shenzhen University
- Shenzhen 518060
- P R China
| | - Dianping Tang
- Key Laboratory of Analysis and Detection for Food Safety (Ministry of Education & Fujian Province)
- Institute of Nanomedicine and Nanobiosensing
- Department of Chemistry
- Fuzhou University
- Fuzhou 350108
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15
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Liu Y, Nie Y, Wang M, Zhang Q, Ma Q. Distance-dependent plasmon-enhanced electrochemiluminescence biosensor based on MoS 2 nanosheets. Biosens Bioelectron 2019; 148:111823. [PMID: 31671357 DOI: 10.1016/j.bios.2019.111823] [Citation(s) in RCA: 31] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2019] [Revised: 10/20/2019] [Accepted: 10/24/2019] [Indexed: 12/26/2022]
Abstract
Nonmetallic plasmonic MoS2 nanosheets were synthesized by hydrothermal top-down method. MoS2 nanosheets had shown strong surface plasmon coupling (SPC) light absorption in the visible and near-infrared region. Herein, the nonmetallic plasmonic MoS2 nanosheets were employed to enhance the electrochemiluminescence (ECL) signal of sulfur doped boron nitrogen QDs (S-BN QDs) in this work. It is important to regulate the distance between ECL luminophore and plasmonic nanoparticles. On one hand, too closed distance can cause energy or electron transfer, which could quench the ECL intensity of nano-luminophore. On the other hand, plasmonic nanostructure cannot significantly affect the luminescence in the far distance. Therefore, we discussed the distance-dependent plasmon-enhanced ECL in detail with different length DNA chains. Furthermore, we constructed a hybridization chain reaction (HCR) amplification ECL sensing mode with the SPC-ECL strategy. The proposed DNA sensor can quantify hepatitis C virus (HCV) gene from 0.5 pmoL/L to 1 nmoL/L with a limit of detection (LOD) of 0.17 pmoL/L.
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Affiliation(s)
- Yang Liu
- Department of Analytical Chemistry, College of Chemistry, Jilin University, Changchun, 130012, China; Electron Microscopy Center, Jilin University, Changchun, 130012, China
| | - Yixin Nie
- Department of Analytical Chemistry, College of Chemistry, Jilin University, Changchun, 130012, China
| | - Mengke Wang
- Department of Analytical Chemistry, College of Chemistry, Jilin University, Changchun, 130012, China
| | - Qian Zhang
- Department of Analytical Chemistry, College of Chemistry, Jilin University, Changchun, 130012, China
| | - Qiang Ma
- Department of Analytical Chemistry, College of Chemistry, Jilin University, Changchun, 130012, China.
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16
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Suea-Ngam A, Howes PD, Stanley CE, deMello AJ. An Exonuclease I-Assisted Silver-Metallized Electrochemical Aptasensor for Ochratoxin A Detection. ACS Sens 2019; 4:1560-1568. [PMID: 31062585 DOI: 10.1021/acssensors.9b00237] [Citation(s) in RCA: 53] [Impact Index Per Article: 10.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
Ochratoxin A (OTA)-a mycotoxin produced by Aspergillus and Penicillium fungi-is a carcinogen and common trace contaminant in agricultural and processed food products. As consumption is detrimental to human and animal health, regular product monitoring is vital, and highly sensitive and portable OTA sensors are necessary in many circumstances. Herein, we report an ultrasensitive, electroanalytical aptasensor for precise determination of OTA at trace levels. The sensor leverages a DNA aptamer to capture OTA and silver metallization as a signal enhancer. Exonuclease I is used to digest unbound aptamers, engendering excellent background signal suppression and sensitivity enhancements. Efficient optimization of assay conditions is achieved using central composite design (CCD), allowing rapid evaluation of both the electrode and square wave voltammetry parameter space. The sensor exhibits excellent analytical performance, with a concentration limit of detection of 0.7 pg mL-1, a limit of quantitation of 2.48 pg mL-1, and a linear dynamic range ( R2 = 0.968) of over 6 orders of magnitude (between 1 pg mL-1 and 0.1 μg mL-1). Direct comparison with ultraperformance liquid chromatography (UPLC) indicates excellent analytical performance for standard solutions ( R2 = 0.995) and spiked beer samples ( R2 = 0.993), with almost quantitative recovery and less than 5% relative standard deviation (RSD).
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Affiliation(s)
- Akkapol Suea-Ngam
- Institute for Chemical and Bioengineering, Department of Chemistry and Applied Biosciences, ETH Zürich, 8093 Zürich, Switzerland
| | - Philip D. Howes
- Institute for Chemical and Bioengineering, Department of Chemistry and Applied Biosciences, ETH Zürich, 8093 Zürich, Switzerland
| | - Claire E. Stanley
- Agroecology and Environment Research Division, Agroscope, 8046 Zürich, Switzerland
| | - Andrew J. deMello
- Institute for Chemical and Bioengineering, Department of Chemistry and Applied Biosciences, ETH Zürich, 8093 Zürich, Switzerland
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17
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Gu C, Yang L, Wang M, Zhou N, He L, Zhang Z, Du M. A bimetallic (Cu-Co) Prussian Blue analogue loaded with gold nanoparticles for impedimetric aptasensing of ochratoxin a. Mikrochim Acta 2019; 186:343. [DOI: 10.1007/s00604-019-3479-5] [Citation(s) in RCA: 36] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2019] [Accepted: 04/30/2019] [Indexed: 12/26/2022]
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18
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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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19
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Hong F, Lin X, Wu Y, Dong Y, Cao Y, Hu F, Gan N. Enzyme-free fluorometric assay for chloramphenicol based on double stirring bar-assisted dual signal amplification. Mikrochim Acta 2019; 186:150. [DOI: 10.1007/s00604-018-3148-0] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2018] [Accepted: 12/04/2018] [Indexed: 12/23/2022]
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20
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Gold nanoparticle enhanced hybridization chain reaction as a method for signal amplification. Application to electrochemical immunodetection of the ovarian cancer biomarker carbohydrate antigen 125. Mikrochim Acta 2018; 185:331. [DOI: 10.1007/s00604-018-2869-4] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2018] [Accepted: 06/08/2018] [Indexed: 12/12/2022]
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21
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Soares RRG, Santos DR, Pinto IF, Azevedo AM, Aires-Barros MR, Chu V, Conde JP. Multiplexed microfluidic fluorescence immunoassay with photodiode array signal acquisition for sub-minute and point-of-need detection of mycotoxins. LAB ON A CHIP 2018; 18:1569-1580. [PMID: 29736505 DOI: 10.1039/c8lc00259b] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Portable, rapid, cost effective and simple analytical tools are in increasing demand to facilitate the routine monitoring of target chemical/biological compounds at the point-of-need. Such devices are highly relevant within the context of food safety, particularly concerning the screening of highly toxic and strictly regulated mycotoxins. To achieve ultrarapid detection of mycotoxins, namely aflatoxin B1, ochratoxin A and deoxynivalenol, at the point-of-need, a novel multiplexed bead-based microfluidic competitive immunosensor, coupled with an array of a-Si:H thin-film photodiodes for integrated fluorescence signal acquisition, is reported. Simultaneously measuring the initial binding rate for each analyte of the sample under analysis against an internal reference, this device provided limits of detection below 1 ng mL-1 for all mycotoxins in a single-step assay and within 1 minute after mixing the sample under analysis with a fluorescent conjugate. The compatibility of the device with the analysis of mycotoxins spiked in corn samples was further demonstrated after performing a sample preparation procedure based on aqueous two-phase extraction. The short times of analysis and sensitivities in the low ng mL-1 range make these devices potentially competitive with the lateral flow devices that are currently the standard for this application. Furthermore, this device architecture and concept is amenable of being expanded to other analytes in food safety, biomedical and other applications.
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Affiliation(s)
- Ruben R G Soares
- Instituto de Engenharia de Sistemas e Computadores - Microsistemas e Nanotecnologias (INESC MN) and IN - Institute of Nanoscience and Nanotechnology, Lisbon, Portugal.
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22
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Polydopamine-based molecularly imprinting polymers on magnetic nanoparticles for recognition and enrichment of ochratoxins prior to their determination by HPLC. Mikrochim Acta 2018; 185:300. [DOI: 10.1007/s00604-018-2826-2] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2018] [Accepted: 04/29/2018] [Indexed: 01/10/2023]
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23
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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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24
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Cai J, Hao C, Sun M, Ma W, Xu C, Kuang H. Chiral Shell Core-Satellite Nanostructures for Ultrasensitive Detection of Mycotoxin. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2018; 14:e1703931. [PMID: 29424128 DOI: 10.1002/smll.201703931] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/11/2017] [Revised: 01/03/2018] [Indexed: 06/08/2023]
Abstract
Herein, the design of a DNA-based chiral biosensor is described utilizing the self-assembly of shell core-gold (Au) satellite nanostructures for the detection of mycotoxin, ochratoxin A (OTA). The assembly of core-satellite nanostructures based on OTA-aptamer binding exhibits a strong chiral signal with an intense circular dichroism (CD) peak. The integrity of the assembly of core-satellite nanostructures is limited to some extent in the presence of different levels of OTA. Correspondingly, the chiral intensity of assembly is weakened with increasing OTA concentrations, allowing quantitative determination of the target. The developed chiral sensor shows an excellent linear relationship between the CD signal and concentrations of OTA in the range of 0.1-5 pg mL-1 with a limit of detection as low as 0.037 pg mL-1 . The effectiveness of the biosensor in a sample of red wine is verified and a good recovery rate is obtained. These results suggest that the strategy has great potential for practical application.
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Affiliation(s)
- Jiarong Cai
- State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu, 214122, P. R. China
- International Joint Research Laboratory for Biointerface and Biodetection, and School of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu, 214122, P. R. China
- Collaborative Innovation Center of Food Safety and Quality Control in Jiangsu Province, Jiangnan University, Wuxi, Jiangsu, 214122, P. R. China
| | - Changlong Hao
- State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu, 214122, P. R. China
- International Joint Research Laboratory for Biointerface and Biodetection, and School of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu, 214122, P. R. China
- Collaborative Innovation Center of Food Safety and Quality Control in Jiangsu Province, Jiangnan University, Wuxi, Jiangsu, 214122, P. R. China
| | - Maozhong Sun
- State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu, 214122, P. R. China
- International Joint Research Laboratory for Biointerface and Biodetection, and School of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu, 214122, P. R. China
- Collaborative Innovation Center of Food Safety and Quality Control in Jiangsu Province, Jiangnan University, Wuxi, Jiangsu, 214122, P. R. China
| | - Wei Ma
- State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu, 214122, P. R. China
- International Joint Research Laboratory for Biointerface and Biodetection, and School of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu, 214122, P. R. China
- Collaborative Innovation Center of Food Safety and Quality Control in Jiangsu Province, Jiangnan University, Wuxi, Jiangsu, 214122, P. R. China
| | - Chuanlai Xu
- State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu, 214122, P. R. China
- International Joint Research Laboratory for Biointerface and Biodetection, and School of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu, 214122, P. R. China
- Collaborative Innovation Center of Food Safety and Quality Control in Jiangsu Province, Jiangnan University, Wuxi, Jiangsu, 214122, P. R. China
| | - Hua Kuang
- State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu, 214122, P. R. China
- International Joint Research Laboratory for Biointerface and Biodetection, and School of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu, 214122, P. R. China
- Collaborative Innovation Center of Food Safety and Quality Control in Jiangsu Province, Jiangnan University, Wuxi, Jiangsu, 214122, P. R. China
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25
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Two-dimensional MoS 2 as a nano-binder for ssDNA: Ultrasensitive aptamer based amperometric detection of Ochratoxin A. Mikrochim Acta 2018; 185:162. [PMID: 29594615 DOI: 10.1007/s00604-018-2706-9] [Citation(s) in RCA: 30] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2017] [Accepted: 01/23/2018] [Indexed: 01/08/2023]
Abstract
Two-dimensional (2D) MoS2 is found to possess different affinities for ssDNA and dsDNA. This finding is exploited in an amperometric aptamer-based method for the determination of the mycotoxin ochratoxin A (OTA). Initially, a dsDNA probe (formatted through the hybridization of OTA-aptamer with an auxiliary DNA) is self-assembled on a gold electrode. Upon introduction of OTA, it will bind to the aptamer and cause the unwinding of dsDNA, while the auxiliary DNA (with single-stranded structure) remains on the electrode. Since the affinity of 2D MoS2 for ssDNA is considerably larger than that for dsDNA, it will be adsorbed on the electrode by binding to the auxiliary DNA. Notably, 2D MoS2 possesses peroxidase-like activity. Hence, it can catalyze the amplification of electrochemical signal of the hydroquinone/benzoquinone redox system. Under optimal conditions, the amperometric signal (best measured at -0.2 V vs. SCE) increases with increasing OTA concentration in the range from 0.5 pg·mL-1 to 1.0 ng·mL-1, with a lower detection limit of 0.23 pg·mL-1. The method was applied to the determination of OTA in spiked red wine. Graphical abstract Herein we construct a convenient electrochemical aptasensor for sensitive monitor of ochratoxin A by using 2D MoS2 as a nano-binder to catalyze the amplification of electrochemical signal from hydroquinone/benzoquinone system.
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26
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Ni J, Yang W, Wang Q, Luo F, Guo L, Qiu B, Lin Z, Yang H. Homogeneous and label-free electrochemiluminescence aptasensor based on the difference of electrostatic interaction and exonuclease-assisted target recycling amplification. Biosens Bioelectron 2018; 105:182-187. [PMID: 29412943 DOI: 10.1016/j.bios.2018.01.043] [Citation(s) in RCA: 38] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2017] [Revised: 01/17/2018] [Accepted: 01/19/2018] [Indexed: 12/16/2022]
Abstract
The difference of electrostatic interaction between free Ru(phen)32+ and Ru(phen)32+ embedded in double strand DNA (dsDNA) to the negatively charged indium tin oxide (ITO) electrode has been applied to develop a homogeneous and label-free electrochemiluminescence (ECL) aptasensor for the first time. Ochratoxin A (OTA) has been chosen as the model target. The OTA aptamer is first hybridized with its complementary single strand DNA (ssDNA) to form dsDNA and then interacted with Ru(phen)32+ via the grooves binding mode to form dsDNA-Ru(phen)32+ complex, which remains negatively charged feature as well as low diffusion capacity to the negatively charged ITO electrode surface owing to the electrostatic repulsion. Meanwhile, the intercalated Ru(phen)32+ in the grooves of dsDNA works as an ECL signal reporter instead of the labor-intensive labeling steps and can generate much more ECL signal than that from the labeling probe. In the presence of target, the aptamer prefers to form an aptamer-target complex in lieu of dsDNA, which induces the releasing of Ru(phen)32+ from the dsDNA-Ru(phen)32+ complex into the solution. With the assistance of RecJf exonuclease (a ssDNA specific exonuclease), the released ssDNA and the aptamer in the target-complex were digested into mononucleotides. In the meantime, the target can be also liberated from OTA-aptamer complex and induce target cycling and large amount of free Ru(phen)32+ present in the solution. Since Ru(phen)32+ contains positive charges, which can diffuses easily to the ITO electrode surface because of electrostatic attraction, causing an obviously enhanced ECL signal detected. Under the optimal conditions, the enhanced ECL of the system has a linear relationship with the OTA concentration in the range of 0.01-1.0 ng/mL with a detection limit of 2 pg/mL. This innovative system not only expands the immobilization-free sensors in the electrochemiluminescent fields, but also can be developed for the detection of different targets easily with the same strategy by changing the aptamer used.
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Affiliation(s)
- Jiancong Ni
- MOE Key Laboratory for Analytical Science of Food Safety and Biology, Fujian Provincial Key Laboratory of Analysis and Detection Technology for Food Safety, College of Chemistry, Fuzhou University, Fuzhou, Fujian 350116, China; Fujian Provincial Key Laboratory of Modern Analytical Science and Separation Technology, College of Chemistry and Environment, Minnan Normal University, Zhangzhou 363000, China
| | - Weiqiang Yang
- MOE Key Laboratory for Analytical Science of Food Safety and Biology, Fujian Provincial Key Laboratory of Analysis and Detection Technology for Food Safety, College of Chemistry, Fuzhou University, Fuzhou, Fujian 350116, China
| | - Qingxiang Wang
- Fujian Provincial Key Laboratory of Modern Analytical Science and Separation Technology, College of Chemistry and Environment, Minnan Normal University, Zhangzhou 363000, China
| | - Fang Luo
- College of Biological Science and Engineering, Fuzhou University, Fuzhou, Fujian 350116,China
| | - Longhua Guo
- MOE Key Laboratory for Analytical Science of Food Safety and Biology, Fujian Provincial Key Laboratory of Analysis and Detection Technology for Food Safety, College of Chemistry, Fuzhou University, Fuzhou, Fujian 350116, China.
| | - Bin Qiu
- MOE Key Laboratory for Analytical Science of Food Safety and Biology, Fujian Provincial Key Laboratory of Analysis and Detection Technology for Food Safety, College of Chemistry, Fuzhou University, Fuzhou, Fujian 350116, China
| | - Zhenyu Lin
- MOE Key Laboratory for Analytical Science of Food Safety and Biology, Fujian Provincial Key Laboratory of Analysis and Detection Technology for Food Safety, College of Chemistry, Fuzhou University, Fuzhou, Fujian 350116, China.
| | - Huanghao Yang
- MOE Key Laboratory for Analytical Science of Food Safety and Biology, Fujian Provincial Key Laboratory of Analysis and Detection Technology for Food Safety, College of Chemistry, Fuzhou University, Fuzhou, Fujian 350116, China
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27
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Soares RRG, Ricelli A, Fanelli C, Caputo D, de Cesare G, Chu V, Aires-Barros MR, Conde JP. Advances, challenges and opportunities for point-of-need screening of mycotoxins in foods and feeds. Analyst 2018; 143:1015-1035. [DOI: 10.1039/c7an01762f] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Abstract
Recent advances in analytical methods for mycotoxin screening in foods and feeds are reviewed, focusing on point-of-need detection using integrated devices.
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Affiliation(s)
- Ruben R. G. Soares
- Instituto de Engenharia de Sistemas e Computadores – Microsistemas e Nanotecnologias (INESC MN) and IN – Institute of Nanoscience and Nanotechnology
- Portugal
- IBB – Institute for Bioengineering and Biosciences
- Instituto Superior Técnico
- Universidade de Lisboa
| | | | - Corrado Fanelli
- Department of Environmental Biology
- University of Rome “La Sapienza”
- Rome
- Italy
| | - Domenico Caputo
- Department of Information Engineering
- Electronics and Telecommunications
- University of Rome “La Sapienza”
- Rome
- Italy
| | - Giampiero de Cesare
- Department of Information Engineering
- Electronics and Telecommunications
- University of Rome “La Sapienza”
- Rome
- Italy
| | - Virginia Chu
- Instituto de Engenharia de Sistemas e Computadores – Microsistemas e Nanotecnologias (INESC MN) and IN – Institute of Nanoscience and Nanotechnology
- Portugal
| | - M. Raquel Aires-Barros
- IBB – Institute for Bioengineering and Biosciences
- Instituto Superior Técnico
- Universidade de Lisboa
- Lisbon
- Portugal
| | - João P. Conde
- Instituto de Engenharia de Sistemas e Computadores – Microsistemas e Nanotecnologias (INESC MN) and IN – Institute of Nanoscience and Nanotechnology
- Portugal
- Department of Bioengineering
- Instituto Superior Técnico
- Universidade de Lisboa
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28
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Feng K, Liu J, Deng L, Yu H, Yang M. Amperometric detection of microRNA based on DNA-controlled current of a molybdophosphate redox probe and amplification via hybridization chain reaction. Mikrochim Acta 2017; 185:28. [DOI: 10.1007/s00604-017-2579-3] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2017] [Accepted: 11/18/2017] [Indexed: 01/23/2023]
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29
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Chen S, Liu P, Su K, Li X, Qin Z, Xu W, Chen J, Li C, Qiu J. Electrochemical aptasensor for thrombin using co-catalysis of hemin/G-quadruplex DNAzyme and octahedral Cu 2O-Au nanocomposites for signal amplification. Biosens Bioelectron 2017; 99:338-345. [PMID: 28800505 DOI: 10.1016/j.bios.2017.08.006] [Citation(s) in RCA: 69] [Impact Index Per Article: 9.9] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2017] [Revised: 08/02/2017] [Accepted: 08/03/2017] [Indexed: 01/09/2023]
Abstract
In this work, novel octahedral Cu2O-Au nanocomposites were synthesized and first applied in an electrochemical aptasensor to detect thrombin (TB) with the aid of a DNAzyme for signal amplification. The octahedral Cu2O-Au nanocomposites have not only simultaneously served as signal amplifying molecules but have also been utilized as an ideal loading platform to immobilize a large number of electroactive substances and recognition probes. Gold nanoparticles (AuNPs) were grown directly on the surface of the octahedral Cu2O nanocrystals, and the Cu2O-Au nanocomposites obtained had the advantages of large surface areas and excellent biocompatibilities. The hemin/G-quadruplex, which was formed by intercalating hemin into the amino terminated thrombin binding aptamer (NH2-TBA), and the electroactive toluidine blue (Tb) were immobilized onto the Cu2O-Au nanocomposite surfaces through a stable Au-N bond. AuNPs, Cu2O and hemin/G-quadruplex co-catalyse the H2O2 in the working buffer to promote the electron transfer of Tb as a multiple signal amplification strategy in order to improve the performance of the electrochemical aptasensor. Under optimal conditions, the designed aptasensor exhibited sensitive detection of TB from 100 fM to 20nM with a lower detection limit of 23fM. This proposed aptasensor exhibited good sensitivity, high specificity and acceptable reproducibility and could be widely applied in bioassay analysis.
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Affiliation(s)
- Shuai Chen
- School of Public Health and Management, Chongqing Medical University, Chongqing 400016, China
| | - Pin Liu
- School of Public Health and Management, Chongqing Medical University, Chongqing 400016, China
| | - Kewen Su
- School of Public Health and Management, Chongqing Medical University, Chongqing 400016, China
| | - Xuan Li
- School of Public Health and Management, Chongqing Medical University, Chongqing 400016, China
| | - Zhen Qin
- School of Public Health and Management, Chongqing Medical University, Chongqing 400016, China
| | - Wei Xu
- School of Public Health and Management, Chongqing Medical University, Chongqing 400016, China
| | - Jun Chen
- School of Public Health and Management, Chongqing Medical University, Chongqing 400016, China
| | - Chaorui Li
- School of Public Health and Management, Chongqing Medical University, Chongqing 400016, China.
| | - Jingfu Qiu
- School of Public Health and Management, Chongqing Medical University, Chongqing 400016, China.
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30
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Xu J, Li W, Shen P, Li Y, Li Y, Deng Y, Zheng Q, Liu Y, Ding Z, Li J, Zheng T. Microfluidic fabrication of photonic encoding magnetized silica microspheres for aptamer-based enrichment of Ochratoxin A. Mikrochim Acta 2017. [DOI: 10.1007/s00604-017-2400-3] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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31
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In-situ amplified voltammetric immunoassay for ochratoxin A by coupling a platinum nanocatalyst based enhancement to a redox cycling process promoted by an enzyme mimic. Mikrochim Acta 2017. [DOI: 10.1007/s00604-017-2223-2] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
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