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Lin X, Ge R, Wei J, Jiao T, Chen Q, Oyama M, Chen Q, Chen X. Magnetic-encoded fluorescent nanospheres-based competitive immunoassay for near-simultaneous detection of four mycotoxins in wheat. Food Chem 2024; 432:137267. [PMID: 37672888 DOI: 10.1016/j.foodchem.2023.137267] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2022] [Revised: 07/20/2023] [Accepted: 08/22/2023] [Indexed: 09/08/2023]
Abstract
Simultaneous detection of mycotoxins is important for food safety. In this study, a magnetic-encoded fluorescent nanosphere-based competitive immunosensor (cFMEIS) with 2×2 array was first developed for simultaneous detection of aflatoxin B1 (AFB1), ochratoxin (OTA), deoxynivalenol (DON), and zearalenone (ZEN) in wheat. Specifically, magnetic nanoparticles with strong and weak responses were conjugated with mycotoxin antigens as capture probes. Fluorescent nanoparticles doped with europium ion (Eu3+) and terbium ion (Tb3+) with red and green emission were coupled with mycotoxin antibodies as signal probes. Using a magnetic field, immune complexes were sequentially separated in a complex system and fluorescently detected. The detection limits of AFB1, DON, OTA, and ZEN were 0.032, 0.141, 0.097, and 0.376 μg/kg, respectively. The recoveries in the certified reference material of wheat flour ranged from 81.6 to 120.0 %. Owing to its high accuracy, selectivity, and sensitivity, the cFMEIS shows great promise as an efficient and sensitive multitarget sensor for mycotoxins.
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Affiliation(s)
- Xueqi Lin
- College of Ocean Food and Biological Engineering, Jimei University, Xiamen 361021, China
| | - Rui Ge
- College of Ocean Food and Biological Engineering, Jimei University, Xiamen 361021, China
| | - Jie Wei
- College of Ocean Food and Biological Engineering, Jimei University, Xiamen 361021, China
| | - Tianhui Jiao
- College of Ocean Food and Biological Engineering, Jimei University, Xiamen 361021, China
| | - Qingmin Chen
- College of Ocean Food and Biological Engineering, Jimei University, Xiamen 361021, China
| | - Munetaka Oyama
- Department of Material Chemistry, Graduate School of Engineering, Kyoto University, Nishikyo-ku, Kyoto 615-8520, Japan
| | - Quansheng Chen
- College of Ocean Food and Biological Engineering, Jimei University, Xiamen 361021, China
| | - Xiaomei Chen
- College of Ocean Food and Biological Engineering, Jimei University, Xiamen 361021, China.
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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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3
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Qiao W, He B, Ren W, Zhao R, Suo Z, Yan H, Xu Y, Wei M, Jin H. Colloidal Au sphere and nanoflower-based immunochromatographic strips for sensitive detection of zearalenone in cereals. ANALYTICAL METHODS : ADVANCING METHODS AND APPLICATIONS 2022; 14:3831-3839. [PMID: 36168770 DOI: 10.1039/d2ay01365g] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/16/2023]
Abstract
Zearalenone (ZEN), also known as an F-2 toxin, is a secondary metabolite in the toxic Fusarium species with estrogen properties. ZEN and its derivatives can cause developmental and reproductive disorders in humans and other mammals. In this study, colloidal Au spheres (AuSPs) and Au nanoflowers (AuNFs) were used as signal labels to detect ZEN in cereals, and the critical factors affecting the sensitivity of the immunochromatographic strip (ICS), namely the volume of antigen, antibody, and probe quantities were optimized and compared in detail. Since the large specific surface area of AuNFs reduces the steric hindrance of proteins, it is more conducive to improving the fixation rate of antibodies and proteins. Compared with the traditional colloidal AuSP immunochromatographic strip (AuSP-ICS), the volume of the antibody used in the AuNF immunochromatographic strip (AuNF-ICS) was 0.6 times that in the AuSPs-ICS. At the same antigen volume, a lower amount of probe can achieve the desired visual detection effect and higher sensitivity. For the AuNF-ICS, the limit of detection (LOD) was as low as 0.08 ng mL-1. ZEN could be detected quickly and accurately from 0.08-10.2 ng mL-1. And the AuNF-ICS had a high degree of specificity and sensitivity to ZEN. In summary, the AuNF-ICS serves as a valuable tool in large-scale on-site detection of ZEN.
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Affiliation(s)
- Weili Qiao
- School of Food Science and Technology, Henan University of Technology, Zhengzhou, Henan 450001, P. R. China.
| | - Baoshan He
- School of Food Science and Technology, Henan University of Technology, Zhengzhou, Henan 450001, P. R. China.
| | - Wenjie Ren
- School of Food Science and Technology, Henan University of Technology, Zhengzhou, Henan 450001, P. R. China.
| | - Renyong Zhao
- School of Food Science and Technology, Henan University of Technology, Zhengzhou, Henan 450001, P. R. China.
| | - Zhiguang Suo
- School of Food Science and Technology, Henan University of Technology, Zhengzhou, Henan 450001, P. R. China.
| | - Haoyang Yan
- School of International Education, Henan University of Technology, Zhengzhou, Henan 450001, P. R. China
| | - Yiwei Xu
- School of Food Science and Technology, Henan University of Technology, Zhengzhou, Henan 450001, P. R. China.
| | - Min Wei
- School of Food Science and Technology, Henan University of Technology, Zhengzhou, Henan 450001, P. R. China.
| | - Huali Jin
- School of Food Science and Technology, Henan University of Technology, Zhengzhou, Henan 450001, P. R. China.
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4
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Wang W, Liu T, Wang Y, Mu G, Zhang F, Yang Q, Hou X. Hydrophilic Covalent Organic Frameworks Coated Steel Sheet As a Mass Spectrometric Ionization Source for the Direct Determination of Zearalenone and Its Derivatives. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2022; 70:12211-12219. [PMID: 36100997 DOI: 10.1021/acs.jafc.2c02868] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
Zearalenone has attracted worldwide attention due to its toxic properties and threat to public health. A rapid determination method for zearalenone and its derivatives by hydrophilic covalent organic frameworks coated steel sheet (HCOFCS) combined with ambient mass spectrometry (AMS) was developed. The HCOFCS behaved as both a tip for solid-phase microextraction and a solid substrate for electrospray ionization mass spectrometry (ESI-MS). To evaluate the HCOFCS-ESI-MS method, five zearalenone and its derivatives in milk samples were determined, including zearalenone (ZEA), α-zearalenol (α-ZEL), β-zearalenol (β-ZEL), α-zearalanol (α-ZAL), and β-zearalanol (β-ZAL). After the extraction procedure, the HCOFCS was directly added with a high voltage for ESI-MS, and the analysis could be completed within 1 min. The developed method showed good linearity in the range 0.1-100 μg/L with a coefficient of determination (R2) > 0.9991. The limits of detection (LODs) and limits of quantitation (LOQs) ranged from 0.05 to 0.1 and 0.2 to 0.3 μg/L, respectively. The results demonstrated that the HCOFCS combined with ESI-MS can be used for the rapid and sensitive determination of trace ZEA and its derivatives in milk samples with satisfactory recoveries from 80.58% to 109.98% and reproducibility with relative standard deviations (RSDs) no more than 11.18%. Furthermore, HCOFCS showed good reusability, which could reuse at least 10 extraction cycles with satisfactory adsorption performance.
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Affiliation(s)
- Wenhua Wang
- Institute of Food Safety, Chinese Academy of Inspection & Quarantine, Beijing 100176, China
- School of Food Science and Engineering, Qingdao Agricultural University, Qingdao, Shandong 266109, China
- Key Laboratory of Food Quality and Safety for State Market Regulation, Beijing 100176, China
| | - Tong Liu
- Institute of Food Safety, Chinese Academy of Inspection & Quarantine, Beijing 100176, China
- Key Laboratory of Food Quality and Safety for State Market Regulation, Beijing 100176, China
| | - Youfa Wang
- Institute of Food Safety, Chinese Academy of Inspection & Quarantine, Beijing 100176, China
- Key Laboratory of Food Quality and Safety for State Market Regulation, Beijing 100176, China
| | - Guodong Mu
- Institute of Food Safety, Chinese Academy of Inspection & Quarantine, Beijing 100176, China
- Key Laboratory of Food Quality and Safety for State Market Regulation, Beijing 100176, China
| | - Feng Zhang
- Institute of Food Safety, Chinese Academy of Inspection & Quarantine, Beijing 100176, China
- Key Laboratory of Food Quality and Safety for State Market Regulation, Beijing 100176, China
| | - Qingli Yang
- School of Food Science and Engineering, Qingdao Agricultural University, Qingdao, Shandong 266109, China
| | - Xiudan Hou
- School of Food Science and Engineering, Qingdao Agricultural University, Qingdao, Shandong 266109, China
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5
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An enhanced immunochromatography assay based on colloidal gold-decorated polydopamine for rapid and sensitive determination of gentamicin in animal-derived food. Food Chem 2022; 387:132916. [DOI: 10.1016/j.foodchem.2022.132916] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2021] [Revised: 03/24/2022] [Accepted: 04/05/2022] [Indexed: 11/22/2022]
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6
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Song Q, Liu A, Zhang S, Li R, Qiao S, He P. Quantum Dot Nanobead-Based Fluorescence-Linked Immunosorbent Assay for Detection of Glycinin in Soybeans and Soy Products. Molecules 2022; 27:3664. [PMID: 35744793 PMCID: PMC9228775 DOI: 10.3390/molecules27123664] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2022] [Revised: 05/26/2022] [Accepted: 06/01/2022] [Indexed: 11/29/2022] Open
Abstract
Soybean glycinin, as a major soybean allergen, is difficult to accurately quantify due to its large molecular weight and complex structure. CdSe/ZnS quantum dot nanobead (QB) is a core/shell fluorescent nanomaterial with strong fluorescent signals and high sensitivity at 630 nm. An immunosorbent assay based on CdSe/ZnS quantum dot nanobeads (QBs-FLISA) was developed for the glycinin quantification in soybean and soybean products. Here, the purified glycinin was coated on the microporous plate to serve as the coating antigen, and CdSe/ZnS nanobead conjugated with anti-glycinin polyclonal antibodies was used as fluorescent detection probe. The target glycinin in the sample and the coated antigen on the plate competitively adsorbed the antibody labeled the CdSe/ZnS QBs probes. The limits of detection and quantitation for glycinin were 0.035 and 0.078 μg mL-1, respectively. The recoveries of the spiked samples ranged from 89.8% to 105.6%, with relative standard deviation less than 8.6%. However, compared with ELISA, the sensitivities of QBs-FLISA for the detection of glycinin were increased by 7 times, and the detection time was shortened by two-thirds. This QBs-FLISA method has been effectively applied to the detection of soybean seeds with different varieties and soy products with different processing techniques, which will provide a rapid screening method for soybean and soybean products with low allergens.
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Affiliation(s)
| | | | | | | | | | - Pingli He
- State Key Laboratory of Animal Nutrition, College of Animal Science and Technology, China Agricultural University, Beijing 100193, China; (Q.S.); (A.L.); (S.Z.); (R.L.); (S.Q.)
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7
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Nano-labeled materials as detection tags for signal amplification in immunochromatographic assay. Trends Analyt Chem 2022. [DOI: 10.1016/j.trac.2022.116673] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
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8
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Hua Q, Liu Z, Wang J, Liang Z, Zhou Z, Shen X, Lei H, Li X. Magnetic immunochromatographic assay with smartphone-based readout device for the on-site detection of zearalenone in cereals. Food Control 2022. [DOI: 10.1016/j.foodcont.2021.108760] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
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9
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Liu Z, Hua Q, Wang J, Liang Z, Zhou Z, Shen X, Lei H, Li X. Prussian blue immunochromatography with portable smartphone-based detection device for zearalenone in cereals. Food Chem 2022; 369:131008. [PMID: 34500205 DOI: 10.1016/j.foodchem.2021.131008] [Citation(s) in RCA: 29] [Impact Index Per Article: 14.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2021] [Revised: 08/29/2021] [Accepted: 08/29/2021] [Indexed: 12/12/2022]
Abstract
In this study, we developed a prussian blue nanoparticles (PBNPs) immunochromatographic assay (ICA) integrated with smartphone-based detection device for ZEN in cereals. PBNPs, as probe labels, were synthesized with properties of controllable structure, environment friendliness, and high affinities to antibody (Ab). PBNPs-ICA quantitative analysis was performed with a hand-held smartphone-based device coupled with a user-friendly and self-programmed detection App. This integrated strategy demonstrated high sensitivity for ZEN with a cut-off value of 10 μg/kg, a detection limit of 0.12 μg/kg, a quantitation limit of 0.27 μg/kg, and recovery rates of 92.0%-105.0% and 88.0%-98.0% for maize and wheat, respectively. The results of 20 naturally contaminated cereal samples showed good correlation (R2>0.99) between LC-MS/MS and developed system. Moreover, the stability experiment revealed that PBNPs-ICA maintained high stability and bioactivity against competitive antigen (Ag). The proposed strategy exhibited great potential for the rapid monitoring of mycotoxins or other small molecule hazards.
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Affiliation(s)
- Zhiwei Liu
- Guangdong Provincial Key Laboratory of Food Quality and Safety, College of Food Science, South China Agricultural University, Guangzhou 510642, China
| | - Qicheng Hua
- Guangdong Provincial Key Laboratory of Food Quality and Safety, College of Food Science, South China Agricultural University, Guangzhou 510642, China
| | - Jin Wang
- Guangdong Provincial Key Laboratory of Food Quality and Safety, College of Food Science, South China Agricultural University, Guangzhou 510642, China
| | - Zaoqing Liang
- College of Mathematics and Infromatics, College of Software Engineering, South China Agricultural University, Guangzhou 510642, China
| | - Zexuan Zhou
- College of Mathematics and Infromatics, College of Software Engineering, South China Agricultural University, Guangzhou 510642, China
| | - Xing Shen
- Guangdong Provincial Key Laboratory of Food Quality and Safety, College of Food Science, South China Agricultural University, Guangzhou 510642, China
| | - Hongtao Lei
- Guangdong Provincial Key Laboratory of Food Quality and Safety, College of Food Science, South China Agricultural University, Guangzhou 510642, China
| | - Xiangmei Li
- Guangdong Provincial Key Laboratory of Food Quality and Safety, College of Food Science, South China Agricultural University, Guangzhou 510642, China.
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Comparative Study of Four Coloured Nanoparticle Labels in Lateral Flow Immunoassay. NANOMATERIALS 2021; 11:nano11123277. [PMID: 34947626 PMCID: PMC8708713 DOI: 10.3390/nano11123277] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/04/2021] [Revised: 11/26/2021] [Accepted: 11/29/2021] [Indexed: 02/07/2023]
Abstract
The detection limit of lateral flow immunoassay (LFIA) is largely determined by the properties of the label used. We compared four nanoparticle labels differing in their chemical composition and colour: (1) gold nanoparticles (Au NPs), red; (2) Au-core/Pt-shell nanoparticles (Au@Pt NPs), black; (3) latex nanoparticles (LPs), green; and (4) magnetic nanoparticles (MPs), brown. The comparison was carried out using one target analyte—Erwinia amylovora, the causal bacterial agent of fire blight. All nanoparticles were conjugated with antibodies through methods that provide maximum functional coverage like physical adsorption (Au NPs, Au@Pt NPs) and covalent bonding (LPs, MPs). All conjugates demonstrated the same ability to bind with E. amylovora through enzyme-linked immunosorbent assay where optical properties of the nanoparticles do not determine the registered signal. However, half-maximal binding was achieved at different numbers of nanoparticles because they differ in size. All conjugates based on four nanoparticle labels were used for lateral flow assays. As a result, Au@Pt NPs provided the minimal detection limit that corresponded to 103 CFU/mL. Au NPs and LPs detected 104 CFU/mL, and MPs detected 105 CFU/mL. The results highlight that simply choosing a coloured label can significantly affect the detection limit of LFIA.
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11
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Ensuring food safety using fluorescent nanoparticles-based immunochromatographic test strips. Trends Food Sci Technol 2021. [DOI: 10.1016/j.tifs.2021.10.025] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
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12
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Tan H, Zhou H, Guo T, Li J, Zhang C, Wang S, Zhang Y, Ma L. Zein structure and its hidden zearalenone: Effect of zein extraction methods. Food Chem 2021; 374:131563. [PMID: 34823935 DOI: 10.1016/j.foodchem.2021.131563] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2021] [Revised: 10/15/2021] [Accepted: 11/06/2021] [Indexed: 12/25/2022]
Abstract
Zein, the plant protein, has received great attention in the last years. However, hidden zearalenone (ZEN), the zein-bound ZEN present in zein would have a great hazard to humans and animals. To date, the fates of hidden ZEN under different extraction methods of zein have not been clarified. In this study, the effect of zein extraction methods on conversion of free ZEN with hidden ZEN and its corresponding mechanism were studied. Results showed that the acid extraction condition promoted the formation of hidden ZEN (up to 92.03%), which was closely related to increased hydrophobic cavity of zein. However, alkaline extraction condition caused the conversion of hidden ZEN (from 58.82% to 13.33%) into free ZEN (from 41.18% to 86.67%), which was attributed to the great denaturation of zein. This study is of great significance for controlling hidden ZEN during zein extraction and maize processing.
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Affiliation(s)
- Hongxia Tan
- College of Food Science, Southwest University, Chongqing 400715, P.R. China
| | - Hongyuan Zhou
- College of Food Science, Southwest University, Chongqing 400715, P.R. China; Chongqing Key Laboratory of Speciality Food Co-Built by Sichuan and Chongqing, Chongqing 400715, P.R. China
| | - Ting Guo
- College of Food Science, Southwest University, Chongqing 400715, P.R. China; Chongqing Key Laboratory of Speciality Food Co-Built by Sichuan and Chongqing, Chongqing 400715, P.R. China
| | - Jiaxin Li
- College of Food Science, Southwest University, Chongqing 400715, P.R. China
| | - Chi Zhang
- College of Food Science, Southwest University, Chongqing 400715, P.R. China
| | - Shuo Wang
- College of Food Science, Southwest University, Chongqing 400715, P.R. China; School of Medicine, Tianjin Key Lab Food Science and Health, Nankai University, Tianjin 300071, P.R. China
| | - Yuhao Zhang
- College of Food Science, Southwest University, Chongqing 400715, P.R. China; Chongqing Key Laboratory of Speciality Food Co-Built by Sichuan and Chongqing, Chongqing 400715, P.R. China; Key Laboratory of Luminescence Analysis and Molecular Sensing (Southwest University), Ministry of Education, Chongqing 400715, P.R. China
| | - Liang Ma
- College of Food Science, Southwest University, Chongqing 400715, P.R. China; Chongqing Key Laboratory of Speciality Food Co-Built by Sichuan and Chongqing, Chongqing 400715, P.R. China.
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Ma T, Liu K, Yang X, Yang J, Pan M, Wang S. Development of Indirect Competitive ELISA and Visualized Multicolor ELISA Based on Gold Nanorods Growth for the Determination of Zearalenone. Foods 2021; 10:foods10112654. [PMID: 34828935 PMCID: PMC8619891 DOI: 10.3390/foods10112654] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2021] [Revised: 10/23/2021] [Accepted: 10/28/2021] [Indexed: 02/05/2023] Open
Abstract
In this study, a zearalenone (ZEN) hapten was designed and prepared against the mycotoxin ZEN, and the original coating ZEN-ovalbumin (ZEN-OVA) was prepared by conjugation with OVA. Based on the gold nanorods (AuNRs) of uniform size and stable properties synthesized by the seed-mediated method, the indirect competitive enzyme-linked immunosorbent assay (ic-ELISA) and the AuNRs growth-based multicolor ELISA for detecting ZEN toxin were further established. Under the optimal experimental conditions, the coating amount of ZEN-OVA: 0.025 μg/well, antibody (Ab) dilution factor: 32,000 times, blocking solution: 0.5% skimmed milk powder, enzyme-labeled secondary Ab diluted 10,000 times, and a pH of the PBS buffer at 7.4, the sensitivity (IC50) of the established ic-ELISA for ZEN detection reached 0.85 ± 0.04 μg/L, and the limit of detection (IC15) reached 0.22 ± 0.08 μg/L. In the multicolor ELISA based on the growth of AuNRs, as the content of ZEN increased, the mixed solution exhibited a significant color change from brownish red to colorless. ZEN concentration as low as 0.1 μg/L can be detected by the naked eye (brown red to dark gray). This study provided an effective analysis strategy for the rapid screening and accurate monitoring of the ZEN contaminant in foods.
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Affiliation(s)
- Tianyu Ma
- State Key Laboratory of Food Nutrition and Safety, Tianjin University of Science & Technology, Tianjin 300457, China; (T.M.); (K.L.); (X.Y.); (J.Y.); (S.W.)
- Key Laboratory of Food Nutrition and Safety, Ministry of Education of China, Tianjin University of Science and Technology, Tianjin 300457, China
| | - Kaixin Liu
- State Key Laboratory of Food Nutrition and Safety, Tianjin University of Science & Technology, Tianjin 300457, China; (T.M.); (K.L.); (X.Y.); (J.Y.); (S.W.)
- Key Laboratory of Food Nutrition and Safety, Ministry of Education of China, Tianjin University of Science and Technology, Tianjin 300457, China
| | - Xiao Yang
- State Key Laboratory of Food Nutrition and Safety, Tianjin University of Science & Technology, Tianjin 300457, China; (T.M.); (K.L.); (X.Y.); (J.Y.); (S.W.)
- Key Laboratory of Food Nutrition and Safety, Ministry of Education of China, Tianjin University of Science and Technology, Tianjin 300457, China
| | - Jingying Yang
- State Key Laboratory of Food Nutrition and Safety, Tianjin University of Science & Technology, Tianjin 300457, China; (T.M.); (K.L.); (X.Y.); (J.Y.); (S.W.)
- Key Laboratory of Food Nutrition and Safety, Ministry of Education of China, Tianjin University of Science and Technology, Tianjin 300457, China
| | - Mingfei Pan
- State Key Laboratory of Food Nutrition and Safety, Tianjin University of Science & Technology, Tianjin 300457, China; (T.M.); (K.L.); (X.Y.); (J.Y.); (S.W.)
- Key Laboratory of Food Nutrition and Safety, Ministry of Education of China, Tianjin University of Science and Technology, Tianjin 300457, China
- Correspondence: ; Tel.: +86-022-6091-2493
| | - Shuo Wang
- State Key Laboratory of Food Nutrition and Safety, Tianjin University of Science & Technology, Tianjin 300457, China; (T.M.); (K.L.); (X.Y.); (J.Y.); (S.W.)
- Key Laboratory of Food Nutrition and Safety, Ministry of Education of China, Tianjin University of Science and Technology, Tianjin 300457, China
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14
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Li R, Wen Y, Wang F, He P. Recent advances in immunoassays and biosensors for mycotoxins detection in feedstuffs and foods. J Anim Sci Biotechnol 2021; 12:108. [PMID: 34629116 PMCID: PMC8504128 DOI: 10.1186/s40104-021-00629-4] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2021] [Accepted: 08/08/2021] [Indexed: 12/22/2022] Open
Abstract
Mycotoxins are secondary metabolites produced by fungus. Many mycotoxin species are highly toxic and are frequently found in cereals and feedstuffs. So, powerful detection methods are vital and effective ways to prevent feed contamination. Traditional detection methods can no longer meet the needs of massive, real-time, simple, and fast mycotoxin monitoring. Rapid detection methods based on advanced material and sensor technology are the future trend. In this review, we highlight recent progress of mycotoxin rapid detection strategies in feedstuffs and foods, especially for simultaneous multiplex mycotoxin determination. Immunoassays, biosensors, and the prominent roles of nanomaterials are introduced. The principles of different types of recognition and signal transduction are explained, and the merits and pitfalls of these methods are compared. Furthermore, limitations and challenges of existing rapid sensing strategies and perspectives of future research are discussed.
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Affiliation(s)
- Runxian Li
- State Key Laboratory of Animal Nutrition, College of Animal Science and Technology, China Agricultural University, Beijing, 100193, China
| | - Yang Wen
- State Key Laboratory of Animal Nutrition, College of Animal Science and Technology, China Agricultural University, Beijing, 100193, China
| | - Fenglai Wang
- State Key Laboratory of Animal Nutrition, College of Animal Science and Technology, China Agricultural University, Beijing, 100193, China
| | - Pingli He
- State Key Laboratory of Animal Nutrition, College of Animal Science and Technology, China Agricultural University, Beijing, 100193, China.
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15
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Wang YF, Mu GD, Wang XJ, Zhang F, Li YL, Lu DJ, Chen FM, Yang ML, He MY, Liu T. Fast construction of core-shell structured magnetic covalent organic framework as sorbent for solid-phase extraction of zearalenone and its derivatives prior to their determination by UHPLC-MS/MS. Mikrochim Acta 2021; 188:246. [PMID: 34235593 DOI: 10.1007/s00604-021-04893-z] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2021] [Accepted: 06/11/2021] [Indexed: 10/20/2022]
Abstract
Magnetic covalent organic framework nanocomposite denoted as Fe3O4@TAPB-Tp with core-shell structure was fabricated via a simple template-mediated precipitation polymerization method at mild conditions. The polyimine network shell was created through the polymerization of 1,3,5-tris(4-aminophenyl)-benzene (TAPB) and 1,3,5-triformyl-phloroglucinol (Tp) in tetrahydrofuran (THF) by the Schiff-base reaction. Featuring with large specific surface area (163.19 m2 g-1), good solution dispersibility, and high stability, the obtained Fe3O4@TAPB-Tp exhibited high adsorption capacities and fast adsorption for zearalenone and its derivatives (ZEAs). The adsorption isotherms showed multilayer adsorption dominated at low concentration and monolayer adsorption at high concentration between the interface of ZEAs and Fe3O4@TAPB-Tp. With the Fe3O4@TAPB-Tp as sorbent, a magnetic solid-phase extraction-ultrahigh performance liquid chromatography-tandem mass spectrometry (UHPLC-MS/MS) method was established for simultaneous adsorption and detection of five ZEAs in complex samples. The proposed method displayed favorable linearity, low limits of detection (0.003 ~ 0.018 μg kg-1), and good repeatability (2.37~10.4%). The developed method has been applied for real sample analysis, with recoveries of 81.27~90.26%. These results showed that Fe3O4@TAPB-Tp has a good application potential for the adsorption of ZEAs in food samples. Magnetic covalent organic framework nanocomposite (Fe3O4@TAPB-Tp) were quickly fabricated at mild conditions and used as effective adsorbent for magnetic solid-phase extraction of zearalenone and its derivatives (ZEAs) from food samples prior to ultrahigh performance liquid chromatography-tandem mass spectrometry (UHPLC-MS/MS) analysis.
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Affiliation(s)
- You-Fa Wang
- Institute of Food Safety, Chinese Academy of Inspection and Quarantine, Beijing, 100176, China.,School of Light Work and Food Engineering, Guangxi University, Nanning, 530004, Guangxi, China
| | - Guo-Dong Mu
- Institute of Food Safety, Chinese Academy of Inspection and Quarantine, Beijing, 100176, China.,School of Light Industry, Beijing Technology and Business University, Beijing, 100048, China
| | - Xiu-Juan Wang
- Institute of Food Safety, Chinese Academy of Inspection and Quarantine, Beijing, 100176, China
| | - Feng Zhang
- Institute of Food Safety, Chinese Academy of Inspection and Quarantine, Beijing, 100176, China.
| | - Yin-Long Li
- Institute of Food Safety, Chinese Academy of Inspection and Quarantine, Beijing, 100176, China
| | - Deng-Jun Lu
- School of Light Work and Food Engineering, Guangxi University, Nanning, 530004, Guangxi, China
| | - Feng-Ming Chen
- Institute of Food Safety, Chinese Academy of Inspection and Quarantine, Beijing, 100176, China
| | - Min-Li Yang
- Institute of Food Safety, Chinese Academy of Inspection and Quarantine, Beijing, 100176, China
| | - Mu-Yi He
- Institute of Food Safety, Chinese Academy of Inspection and Quarantine, Beijing, 100176, China
| | - Tong Liu
- Institute of Food Safety, Chinese Academy of Inspection and Quarantine, Beijing, 100176, China.
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16
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Li R, Wen Y, Yang L, Liu A, Wang F, He P. Dual quantum dot nanobeads-based fluorescence-linked immunosorbent assay for simultaneous detection of aflatoxin B1 and zearalenone in feedstuffs. Food Chem 2021; 366:130527. [PMID: 34284186 DOI: 10.1016/j.foodchem.2021.130527] [Citation(s) in RCA: 27] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2021] [Revised: 06/22/2021] [Accepted: 07/01/2021] [Indexed: 01/20/2023]
Abstract
A novel dual quantum dot nanobeads-based fluorescence-linked immunosorbent assay (QBs-FLISA) was successfully developed for simultaneously detecting aflatoxin B1 (AFB1) and zearalenone (ZEN) in feedstuffs. Dual CdSe/ZnS quantum dot nanobeads with different diameters that emit red and green fluorescence were conjugated with anti-AFB1 and anti-ZEN monoclonal antibodies to prepare fluorescent probes, which greatly enhance analytical performance. Under the optimal conditions, the limits of detection for AFB1 and ZEN were 9.3 and 102.1 pg mL-1, respectively. The recoveries ranged from 82.50% to 116.21% with relative standard deviation less than 11.3%. Compared with traditional enzyme-linked immunosorbent assay, detection sensitivities of AFB1 and ZEN using QBs-FLISA were increased 20 and 5 folds, respectively. In addition, results of feedstuff samples analyzed by QBs-FLISA and liquid chromatography tandem mass spectrometry showed a good agreement (R2 = 0.99).
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Affiliation(s)
- Runxian Li
- State Key Laboratory of Animal Nutrition, College of Animal Science and Technology, China Agricultural University, Beijing 100193, PR China
| | - Yang Wen
- State Key Laboratory of Animal Nutrition, College of Animal Science and Technology, China Agricultural University, Beijing 100193, PR China
| | - Luqing Yang
- State Key Laboratory of Animal Nutrition, College of Animal Science and Technology, China Agricultural University, Beijing 100193, PR China
| | - Anguo Liu
- State Key Laboratory of Animal Nutrition, College of Animal Science and Technology, China Agricultural University, Beijing 100193, PR China
| | - Fenglai Wang
- State Key Laboratory of Animal Nutrition, College of Animal Science and Technology, China Agricultural University, Beijing 100193, PR China
| | - Pingli He
- State Key Laboratory of Animal Nutrition, College of Animal Science and Technology, China Agricultural University, Beijing 100193, PR China.
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17
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Wang J, Li X, Shen X, Zhang A, Liu J, Lei H. Polystyrene Microsphere-Based Immunochromatographic Assay for Detection of Aflatoxin B 1 in Maize. BIOSENSORS 2021; 11:200. [PMID: 34202953 PMCID: PMC8234612 DOI: 10.3390/bios11060200] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 04/30/2021] [Revised: 05/30/2021] [Accepted: 06/15/2021] [Indexed: 06/13/2023]
Abstract
Aflatoxin B1 (AFB1), a mycotoxin, is hepatotoxic, carcinogenic, and nephrotoxic in humans and animals, and contaminate a wide range of maize. In this study, an immunochromatographic assay (ICA) based on polystyrene microspheres (PMs) was developed for sensitive and quantitative detection of AFB1 in maize. The amounts of PMs, the condition for activating carboxyl groups of PMs, the amount of monoclonal antibody (mAb), and the volume of the immune probe were optimized to enhance the performance PMs-ICA for point-of-care testing of AFB1 in maize. The PMs-ICA showed the cut-off value of 1 ng/mL in phosphate buffer (PB) and 6 µg/kg in maize samples, respectively. The quantitative limit of detection (qLOD) was 0.27 and 1.43 µg/kg in PB and maize samples, respectively. The accuracy and precision of the PMs-ICA were evaluated by analysis of spiked maize samples with recoveries of 96.0% to 107.6% with coefficients of variation below 10%. In addition, the reliability of PMs-ICA was confirmed by the liquid chromatography-tandem mass spectrometry method. The results indicated that the PMs-ICA could be used as a sensitive, simple, rapid point-of-care testing of AFB1 in maize.
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Affiliation(s)
- Jin Wang
- Guangdong Provincial Key Laboratory of Food Quality and Safety, South China Agricultural University, Guangzhou 510642, China; (J.W.); (X.L.); (X.S.); (J.L.)
| | - Xiangmei Li
- Guangdong Provincial Key Laboratory of Food Quality and Safety, South China Agricultural University, Guangzhou 510642, China; (J.W.); (X.L.); (X.S.); (J.L.)
| | - Xing Shen
- Guangdong Provincial Key Laboratory of Food Quality and Safety, South China Agricultural University, Guangzhou 510642, China; (J.W.); (X.L.); (X.S.); (J.L.)
| | - Ang Zhang
- Technology Center of Qinhuangdao Customs, Qinhuangdao 066004, China;
| | - Jinxiu Liu
- Guangdong Provincial Key Laboratory of Food Quality and Safety, South China Agricultural University, Guangzhou 510642, China; (J.W.); (X.L.); (X.S.); (J.L.)
| | - Hongtao Lei
- Guangdong Provincial Key Laboratory of Food Quality and Safety, South China Agricultural University, Guangzhou 510642, China; (J.W.); (X.L.); (X.S.); (J.L.)
- Guangdong Laboratory for Lingnan Modern Agriculture, Guangzhou 510642, China
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18
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A Portable, Label-Free, Reproducible Quartz Crystal Microbalance Immunochip for the Detection of Zearalenone in Food Samples. BIOSENSORS-BASEL 2021; 11:bios11020053. [PMID: 33669533 PMCID: PMC7922548 DOI: 10.3390/bios11020053] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/23/2021] [Revised: 02/15/2021] [Accepted: 02/17/2021] [Indexed: 12/20/2022]
Abstract
This research reports a portable immunochip, based on quartz crystal microbalance (QCM) for label-free, low-cost qualitative detection of zearalenone (ZEN) in food samples. The experimental parameters in the functionalization and working process were evaluated in detail, in order to achieve a high accuracy and sensitivity. Under optimal conditions, the ZEN concentration at an inhibition ratio of 50% and 15% of the proposed QCM immunochip achieved 3.41 µg L−1 and 0.37 µg L−1, respectively. This portable QCM immunochip also exhibited high specificity, no obvious cross-reaction to five structural analogs of ZEN, and showed other mycotoxins. It could finish the whole qualitative measurement within 30 min, showed good stability during the processes of preparation (SD < 5%, n = 9), storage (frequency response >90%, in PBS at 4 °C for 15 days), and application (frequency response >90% after being reused 6 times). The developed QCM immunochip obtained accurate and repeatable recovery results in ZEN analysis in the chosen food samples (corn, wheat flour, soy sauce, and milk), which had a high correlation (R2 = 0.9844) with that achieved by the HPLC–MS/MS method. In short, this work developed a portable, stable, and reproducible QCM immunochip that could be used for rapid, low-cost, and sensitively measurement of ZEN content in real food samples.
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19
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Direct and Competitive Optical Grating Immunosensors for Determination of Fusarium Mycotoxin Zearalenone. Toxins (Basel) 2021; 13:toxins13010043. [PMID: 33430121 PMCID: PMC7827007 DOI: 10.3390/toxins13010043] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2020] [Revised: 12/29/2020] [Accepted: 01/05/2021] [Indexed: 12/21/2022] Open
Abstract
Novel optical waveguide lightmode spectroscopy (OWLS)-based immunosensor formats were developed for label-free detection of Fusarium mycotoxin zearalenone (ZON). To achieve low limits of detection (LODs), both immobilised antibody-based (direct) and immobilised antigen-based (competitive) assay setups were applied. Immunoreagents were immobilised on epoxy-, amino-, and carboxyl-functionalised sensor surfaces, and by optimising the immobilisation methods, standard sigmoid curves were obtained in both sensor formats. An outstanding LOD of 0.002 pg/mL was obtained for ZON in the competitive immunosensor setup with a dynamic detection range between 0.01 and 1 pg/mL ZON concentrations, depending on the covalent immobilisation method applied. This corresponds to a five orders of magnitude improvement in detectability of ZON relative to the previously developed enzyme-linked immonosorbent assay (ELISA) method. The selectivity of the immunosensor for ZON was demonstrated with structural analogues (α-zearalenol, α-zearalanol, and β-zearalanol) and structurally unrelated mycotoxins. The method was found to be applicable in maize extract using acetonitrile as the organic solvent, upon a dilution rate of 1:10,000 in buffer. Thus, the OWLS immunosensor method developed appears to be suitable for the quantitative determination of ZON in aqueous medium. The new technique can widen the range of sensoric detection methods of ZON for surveys in food and environmental safety assessment.
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20
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Mao X, Wu Y, Chen H, Wang Y, Yu B, Shi G. A mix-and-detect method based on colloidal gold immunochromatographic assay for on-site detection of zearalenone in edible oils. ANALYTICAL METHODS : ADVANCING METHODS AND APPLICATIONS 2020; 12:5628-5634. [PMID: 33188663 DOI: 10.1039/d0ay01752c] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
The common methods to detect zearalenone (ZEN) in edible oils need organic solvents to extract ZEN and then some sample purification process before detection, so, it is not convenient for on-site use. Here a simple method without organic solvents and a sample purification process was developed for the determination of ZEN in edible oils. The detection process only needs mixing oil with a surfactant solution in the indicated ratio and then loading the mixture onto a colloidal gold immunochromatographic (CGI) strip for detection. The optimized surfactant was AEO15 among the seven surfactants studied in this paper. The ZEN residue in edible oil could be quantitatively determined with a detection limit of 44.3 ng g-1, and the working range of the standard curve was from 50 to 800 ng g-1. This method has been successfully applied to the detection of ZEN in plant oils with recoveries ranging from 81 ± 7% to 129 ± 9% for spiked samples. The detection results for the ZEN residue in oil samples from a local market by this method were in good agreement with those obtained by the national standard method.
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Affiliation(s)
- Xinyi Mao
- School of Chemistry and Biological Engineering, University of Science and Technology Beijing, Beijing, 100083, P. R.China.
| | - Yuxiang Wu
- Shandong Lvdu Biotechnology Co., Ltd, Shandong 256600, P. R.China
| | - Huitian Chen
- School of Chemistry and Biological Engineering, University of Science and Technology Beijing, Beijing, 100083, P. R.China.
| | - Yifan Wang
- School of Chemistry and Biological Engineering, University of Science and Technology Beijing, Beijing, 100083, P. R.China.
| | - Binger Yu
- School of Chemistry and Biological Engineering, University of Science and Technology Beijing, Beijing, 100083, P. R.China.
| | - Guoqing Shi
- School of Chemistry and Biological Engineering, University of Science and Technology Beijing, Beijing, 100083, P. R.China.
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21
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Xing KY, Shan S, Liu DF, Lai WH. Recent advances of lateral flow immunoassay for mycotoxins detection. Trends Analyt Chem 2020. [DOI: 10.1016/j.trac.2020.116087] [Citation(s) in RCA: 30] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
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22
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Qi H, Sun Q, Ma Y, Wu P, Wang J. Advantages of Lateral Flow Assays Based on Fluorescent Submicrospheres and Quantum Dots for Clostridium difficile Toxin B Detection. Toxins (Basel) 2020; 12:toxins12110722. [PMID: 33227925 PMCID: PMC7699250 DOI: 10.3390/toxins12110722] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2020] [Revised: 11/15/2020] [Accepted: 11/16/2020] [Indexed: 01/05/2023] Open
Abstract
Clostridium difficile colitis is caused by a cytotoxin produced by the anaerobic bacteria C. difficile in the epithelial cells of the large intestine, particularly C. difficile toxin B (TcdB). However, the sensitivity of currently utilized C. difficile endotoxin determination methods has been called into question, and, therefore, more accurate and convenient detection methods are needed. Our study is the first to systematically compare fluorescent submicrosphere-based and quantum-dot nanobead-based lateral fluidity measurement methods (FMs-LFA and QDNBs-LFA) with toxin B quantification in fecal samples via sandwich analysis. The limits of detection (LOD) of FMs-LFA and QDNBs-LFA in the fecal samples were 0.483 and 0.297 ng/mL, respectively. TcdB analyses of the fecal samples indicated that the results of QDNBs-LFA and FMs-LFA were consistent with those of a commercial enzyme-linked immunosorbent assay (ELISA) test kit. The sensitivity of QDNBs-LFA was highly correlated with clinical diagnoses. Therefore, quantum dot nanobeads (QDNBs) are deemed highly suitable for lateral fluidity analyses, which would facilitate the implementation of portable and rapid on-the-spot applications, such as food hygiene and safety tests and onsite medical testing.
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Affiliation(s)
- Haonan Qi
- School of Biology and Biological Engineering, South China University of Technology, Guangzhou 510006, China; (H.Q.); (Q.S.); (Y.M.)
| | - Qiuli Sun
- School of Biology and Biological Engineering, South China University of Technology, Guangzhou 510006, China; (H.Q.); (Q.S.); (Y.M.)
| | - Yi Ma
- School of Biology and Biological Engineering, South China University of Technology, Guangzhou 510006, China; (H.Q.); (Q.S.); (Y.M.)
| | - Peidian Wu
- National & Local United Engineering Lab of Rapid Diagnostic Test, Guangzhou Wondfo Biotech Co., Ltd., Guangzhou 510663, China;
| | - Jufang Wang
- School of Biology and Biological Engineering, South China University of Technology, Guangzhou 510006, China; (H.Q.); (Q.S.); (Y.M.)
- Correspondence: ; Tel.: +86-20-3938-0626
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23
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Li X, Chen X, Liu Z, Wang J, Hua Q, Liang J, Shen X, Xu Z, Lei H, Sun Y. Latex microsphere immunochromatography for quantitative detection of dexamethasone in milk and pork. Food Chem 2020; 345:128607. [PMID: 33310562 DOI: 10.1016/j.foodchem.2020.128607] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2020] [Revised: 10/11/2020] [Accepted: 11/07/2020] [Indexed: 01/06/2023]
Abstract
Dexamethasone (DEX) is a synthetic long-acting glucocorticoid, which can increase the risk of hypertension and diabetes if it is abused or used improperly. In this study, lateral flow immunoassays (LFIA) based on black and blue latex microspheres (LMs), integrated with a strip reader, was developed for quantitative detection of DEX in milk and pork. The results could be achieved within 15 min. The visible limits of detection (vLODs) were 0.3 ng/mL and 0.7 μg/kg for milk and pork, respectively. The quantitative limits of detection (qLODs) were 0.047 ng/mL and 0.087 μg/kg, respectively. The recoveries ranged from 80.0% to 122.8%. 20 milk and 10 pork samples were analyzed to confirm the performance of the on-site application. The detection results were consistent with the data from LC-MS/MS, indicating the practical reliability of our established assay. The developed LMs-LFIA provides a promising technical support for rapid, sensitive, and on-site detection of DEX.
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Affiliation(s)
- Xiangmei Li
- Guangdong Provincial Key Laboratory of Food Quality and Safety, College of Food Science, South China Agricultural University, Guangzhou 510642, China
| | - Xiaomin Chen
- Guangdong Provincial Key Laboratory of Food Quality and Safety, College of Food Science, South China Agricultural University, Guangzhou 510642, China
| | - Zhiwei Liu
- Guangdong Provincial Key Laboratory of Food Quality and Safety, College of Food Science, South China Agricultural University, Guangzhou 510642, China
| | - Jin Wang
- Guangdong Provincial Key Laboratory of Food Quality and Safety, College of Food Science, South China Agricultural University, Guangzhou 510642, China
| | - Qicheng Hua
- Guangdong Provincial Key Laboratory of Food Quality and Safety, College of Food Science, South China Agricultural University, Guangzhou 510642, China
| | - Jinxuan Liang
- Guangdong Provincial Key Laboratory of Food Quality and Safety, College of Food Science, South China Agricultural University, Guangzhou 510642, China
| | - Xing Shen
- Guangdong Provincial Key Laboratory of Food Quality and Safety, College of Food Science, South China Agricultural University, Guangzhou 510642, China
| | - Zhenlin Xu
- Guangdong Provincial Key Laboratory of Food Quality and Safety, College of Food Science, South China Agricultural University, Guangzhou 510642, China
| | - Hongtao Lei
- Guangdong Provincial Key Laboratory of Food Quality and Safety, College of Food Science, South China Agricultural University, Guangzhou 510642, China.
| | - Yuanming Sun
- Guangdong Provincial Key Laboratory of Food Quality and Safety, College of Food Science, South China Agricultural University, Guangzhou 510642, China.
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24
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Hou S, Ma J, Cheng Y, Wang H, Sun J, Yan Y. Quantum dot nanobead-based fluorescent immunochromatographic assay for simultaneous quantitative detection of fumonisin B1, dexyonivalenol, and zearalenone in grains. Food Control 2020. [DOI: 10.1016/j.foodcont.2020.107331] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
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25
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Hou S, Ma J, Cheng Y, Wang H, Sun J, Yan Y. One-step rapid detection of fumonisin B1, dexyonivalenol and zearalenone in grains. Food Control 2020. [DOI: 10.1016/j.foodcont.2020.107107] [Citation(s) in RCA: 23] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
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26
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Rapid and visual detection of African swine fever virus antibody by using fluorescent immunochromatography test strip. Talanta 2020; 219:121284. [PMID: 32887174 DOI: 10.1016/j.talanta.2020.121284] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2020] [Revised: 05/31/2020] [Accepted: 06/01/2020] [Indexed: 11/22/2022]
Abstract
African swine fever virus (ASFV) is a large and complex DNA virus that causes a highly contagious and often lethal swine viral disease, for which no vaccine and effective treatments are available yet. Hence, ASFV presents significant economic consequences for the swine industry. A rapid and simple diagnostic method is urgently needed to monitor ASFV-specific antibodies for controlling the spread of ASFV. In this study, we chose the truncated p54 protein as an antigen and combined it with Eu-doped fluorescent microspheres as tracers to detect anti-ASFV antibodies specifically. Results showed that the truncated p54 protein had high specificity to ASFV antibody and had no cross-reactions with other swine virus antibodies. The results between our fluorescent immunochromatography test strip (FICTS) and commercial ELISA kits showed high consistency. The proposed FICTS offers a rapid, sensitive, specific, and visual method for ASFV antibody detection and shows great potential for ASF epidemic surveillance and control.
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27
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Wang X, Wu X, Lu Z, Tao X. Comparative Study of Time-Resolved Fluorescent Nanobeads, Quantum Dot Nanobeads and Quantum Dots as Labels in Fluorescence Immunochromatography for Detection of Aflatoxin B 1 in Grains. Biomolecules 2020; 10:biom10040575. [PMID: 32283775 PMCID: PMC7226082 DOI: 10.3390/biom10040575] [Citation(s) in RCA: 24] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2020] [Revised: 03/11/2020] [Accepted: 03/24/2020] [Indexed: 01/15/2023] Open
Abstract
Label selection is an essential procedure for improving the sensitivity of fluorescence immunochromatography assays (FICAs). Under optimum conditions, time-resolved fluorescent nanobeads (TRFN), quantum dots nanobeads (QB) and quantum dots (QD)-based immunochromatography assays (TRFN-FICA, QB-FICA and QD-FICA) were systematically and comprehensively compared for the quantitative detection of aflatoxin B1 (AFB1) in six grains (corn, soybeans, sorghum, wheat, rice and oat). All three FICAs can be applied as rapid, cost-effective and convenient qualitative tools for onsite screening of AFB1; TRFN-FICA exhibits the best performance with the least immune reagent consumption, shortest immunoassay duration and lowest limit of detection (LOD). The LODs for TRFN-FICA, QB-FICA and QD-FICA are 0.04, 0.30 and 0.80 μg kg−1 in six grains, respectively. Recoveries range from 83.64% to 125.61% at fortified concentrations of LOD, 2LOD and 4LOD, with the coefficient of variation less than 10.0%. Analysis of 60 field grain samples by three FICAs is in accordance with that of LC-MS/MS, and TRFN-FICA obtained the best fit. In conclusion, TRFN-FICA is more suitable for quantitative detection of AFB1 in grains when the above factors are taken into consideration.
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Affiliation(s)
- Xin Wang
- College of Food Science, Southwest University, Chongqing 400715, China;
| | - Xuan Wu
- Chongqing Animal Disease Prevention and Control Center, Chongqing 401120, China;
| | - Zhisong Lu
- Institute for Clean Energy & Advanced Materials, School of Materials & Energy, Southwest University, Chongqing 400715, China;
| | - Xiaoqi Tao
- College of Food Science, Southwest University, Chongqing 400715, China;
- Correspondence: ; Tel.: +86-18306008102
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28
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Pan M, Ma T, Yang J, Li S, Liu S, Wang S. Development of Lateral Flow Immunochromatographic Assays Using Colloidal Au Sphere and Nanorods as Signal Marker for the Determination of Zearalenone in Cereals. Foods 2020; 9:foods9030281. [PMID: 32143348 PMCID: PMC7143912 DOI: 10.3390/foods9030281] [Citation(s) in RCA: 24] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2020] [Revised: 02/25/2020] [Accepted: 02/26/2020] [Indexed: 01/19/2023] Open
Abstract
This paper describes the development of lateral flow immunochromatographic assays (ICAs) using colloidal Au sphere (SP) and nanorods (NRs) as signal markers for the determination of zearalenone (ZEN) in cereals. The developed ICAs can detect the analyte ZEN within a short time (10 min), and achieve lower limit of detection (LOD). This is the first time that the AuNRs are used as signal probe in immune test strip for ZEN detection. For colloidal AuSP immunochromatographic analysis (AuSP-ICA), the LODs in solution and spiked cereal sample were 5.0 μg L−1 and 60 μg kg−1, and for AuNRs immunochromatographic analysis (AuNRs-ICA) the two LODs achieved 3.0 μg L−1 and 40 μg kg−1, respectively. These two proposed ICAs have minor cross-reaction to the structural analogs of ZEN, and no cross-reactivity with aflatoxin B1, T-2 toxin, ochratoxin A, deoxynivalenol, fumonisin B1. Both of the developed ICAs can specifically and sensitively detect ZEN in cereals, providing an effective strategy for rapid screening and detection of ZEN in a large number of food samples.
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Affiliation(s)
- Mingfei Pan
- State Key Laboratory of Food Nutrition and Safety, Tianjin University of Science & Technology, Tianjin 300457, China; (M.P.); (T.M.); (J.Y.); (S.L.); (S.L.)
- Key Laboratory of Food Nutrition and Safety, Ministry of Education of China, Tianjin University of Science and Technology, Tianjin 300457, China
| | - Tianyu Ma
- State Key Laboratory of Food Nutrition and Safety, Tianjin University of Science & Technology, Tianjin 300457, China; (M.P.); (T.M.); (J.Y.); (S.L.); (S.L.)
- Key Laboratory of Food Nutrition and Safety, Ministry of Education of China, Tianjin University of Science and Technology, Tianjin 300457, China
| | - Jingying Yang
- State Key Laboratory of Food Nutrition and Safety, Tianjin University of Science & Technology, Tianjin 300457, China; (M.P.); (T.M.); (J.Y.); (S.L.); (S.L.)
- Key Laboratory of Food Nutrition and Safety, Ministry of Education of China, Tianjin University of Science and Technology, Tianjin 300457, China
| | - Shijie Li
- State Key Laboratory of Food Nutrition and Safety, Tianjin University of Science & Technology, Tianjin 300457, China; (M.P.); (T.M.); (J.Y.); (S.L.); (S.L.)
- Key Laboratory of Food Nutrition and Safety, Ministry of Education of China, Tianjin University of Science and Technology, Tianjin 300457, China
| | - Shengmiao Liu
- State Key Laboratory of Food Nutrition and Safety, Tianjin University of Science & Technology, Tianjin 300457, China; (M.P.); (T.M.); (J.Y.); (S.L.); (S.L.)
- Key Laboratory of Food Nutrition and Safety, Ministry of Education of China, Tianjin University of Science and Technology, Tianjin 300457, China
| | - Shuo Wang
- State Key Laboratory of Food Nutrition and Safety, Tianjin University of Science & Technology, Tianjin 300457, China; (M.P.); (T.M.); (J.Y.); (S.L.); (S.L.)
- Key Laboratory of Food Nutrition and Safety, Ministry of Education of China, Tianjin University of Science and Technology, Tianjin 300457, China
- Correspondence: ; Tel.: +86-022-6091-2493
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Huang Y, Xu T, Wang W, Wen Y, Li K, Qian L, Zhang X, Liu G. Lateral flow biosensors based on the use of micro- and nanomaterials: a review on recent developments. Mikrochim Acta 2019; 187:70. [PMID: 31853644 DOI: 10.1007/s00604-019-3822-x] [Citation(s) in RCA: 64] [Impact Index Per Article: 12.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2019] [Accepted: 09/12/2019] [Indexed: 12/25/2022]
Abstract
This review (with 187 refs.) summarizes the progress that has been made in the design of lateral flow biosensors (LFBs) based on the use of micro- and nano-materials. Following a short introduction into the field, a first section covers features related to the design of LFBs, with subsections on strip-based, cotton thread-based and vertical flow- and syringe-based LFBs. The next chapter summarizes methods for sample pretreatment, from simple method to membrane-based methods, pretreatment by magnetic methods to device-integrated sample preparation. Advances in flow control are treated next, with subsections on cross-flow strategies, delayed and controlled release and various other strategies. Detection conditionst and mathematical modelling are briefly introduced in the following chapter. A further chapter covers methods for reliability improvement, for example by adding other validation lines or adopting different detection methods. Signal readouts are summarized next, with subsections on color-based, luminescent, smartphone-based and SERS-based methods. A concluding section summarizes the current status and addresses challenges in future perspectives. Graphical abstractRecent development and breakthrough points of lateral flow biosensors.
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Affiliation(s)
- Yan Huang
- Research Center for Bioengineering and Sensing Technology, University of Science & Technology Beijing, Beijing, 100083, People's Republic of China.,Institute of Biomedical and Health, School of Life and Health Science, Anhui Science and Technology University, Fengyang, Anhui, 233100, People's Republic of China.,Department of Chemistry and biochemistry, North Dakota State University, Fargo, ND, 58105, USA
| | - Tailin Xu
- Research Center for Bioengineering and Sensing Technology, University of Science & Technology Beijing, Beijing, 100083, People's Republic of China
| | - Wenqian Wang
- Research Center for Bioengineering and Sensing Technology, University of Science & Technology Beijing, Beijing, 100083, People's Republic of China
| | - Yongqiang Wen
- Research Center for Bioengineering and Sensing Technology, University of Science & Technology Beijing, Beijing, 100083, People's Republic of China
| | - Kun Li
- Institute of Biomedical and Health, School of Life and Health Science, Anhui Science and Technology University, Fengyang, Anhui, 233100, People's Republic of China
| | - Lisheng Qian
- Institute of Biomedical and Health, School of Life and Health Science, Anhui Science and Technology University, Fengyang, Anhui, 233100, People's Republic of China.
| | - Xueji Zhang
- Research Center for Bioengineering and Sensing Technology, University of Science & Technology Beijing, Beijing, 100083, People's Republic of China. .,Institute of Biomedical and Health, School of Life and Health Science, Anhui Science and Technology University, Fengyang, Anhui, 233100, People's Republic of China. .,School of Biomedical Engineering, Shenzhen University Healthy Science Center, Shenzhen, Guangdong, 518060, People's Republic of China.
| | - Guodong Liu
- Institute of Biomedical and Health, School of Life and Health Science, Anhui Science and Technology University, Fengyang, Anhui, 233100, People's Republic of China. .,Department of Chemistry and biochemistry, North Dakota State University, Fargo, ND, 58105, USA.
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Fluorometric lateral flow immunoassay for simultaneous determination of three mycotoxins (aflatoxin B 1, zearalenone and deoxynivalenol) using quantum dot microbeads. Mikrochim Acta 2019; 186:748. [PMID: 31696359 DOI: 10.1007/s00604-019-3879-6] [Citation(s) in RCA: 48] [Impact Index Per Article: 9.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2019] [Accepted: 09/29/2019] [Indexed: 10/25/2022]
Abstract
A fluorometric lateral flow immunoassay (LFA) is described for the simultaneous determination of the mycotoxins aflatoxin B1 (AFB1), zearalenone (ZEN) and deoxynivalenol (DON). The method is based on the use of CdSe/SiO2 quantum dot microbeads (QBs) with a mean diameter of 106 nm. These have strong red luminescence (with excitation/emission peaks at 365/622 nm) which results in enhanced sensitivity. The QBs binding with monoclonal antibodies (mAbs) as the signal probes can react specifically with AFB1, ZEN and DON, respectively. There is an inverse correlation between the fluorescence signal intensity of test line and the analyte content, which can realize the quantitative analysis of analytes within 15 min. The limits of detection in solution are 10, 80 and 500 pg mL-1 for AFB1, ZEN and DON, respectively. Besides, the average recoveries from spiked feed range from 85.5 to 119.0%, and the relative standard deviations are less than 16.4% for both intra- and inter-day assays. The method was used to analyze naturally contaminated feedstuff, and this resulted in a good agreement with data obtained by LC-MS/MS. Graphical abstractSchematic representation of a fluorometric method for the simultaneous determination of three mycotoxins. Quantum dot microbeads (QBs) binding with monoclonal antibodies (mAbs) are signal probes. There is an inverse correlation between the fluorescence intensity of test line and the analyte concentration.
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Wang C, Xiao R, Wang S, Yang X, Bai Z, Li X, Rong Z, Shen B, Wang S. Magnetic quantum dot based lateral flow assay biosensor for multiplex and sensitive detection of protein toxins in food samples. Biosens Bioelectron 2019; 146:111754. [PMID: 31605985 DOI: 10.1016/j.bios.2019.111754] [Citation(s) in RCA: 72] [Impact Index Per Article: 14.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2019] [Revised: 09/20/2019] [Accepted: 09/30/2019] [Indexed: 01/09/2023]
Abstract
Protein toxins, such as botulinum neurotoxin type A (BoNT/A) and staphylococcal enterotoxin B (SEB), easily pollute food and water and are ultra-toxic to humans and animals, thus requiring a sensitive on-site detection method. In this study, we reported a novel lateral flow assay (LFA) strip on the basis of magnetic quantum dot nanoparticles (MagQD NPs) for sensitive and multiplex protein toxin detection in food samples. A new type of MagQD NP was prepared by fixing the dense carboxylated QDs on the surface of polyethyleneimine-modified Fe3O4 magnetic NPs (MNPs) and applied in LFA with the following functions: capture and enrich target toxins from sample solutions and serve as advanced fluorescent labels for the quantitative determination of targets on the strip. Through this strategy, the assay realized quantified BoNT/A and SEB detection in 30 min with the limits of detection of 2.52 and 2.86 pg/mL, respectively. The selectivity and the ability of quantitative analysis of the method were validated in real food samples, including milk and juice. This MagQD-LFA biosensor showed considerable potential as a point-of-care testing tool for the sensitive detection of trace toxins.
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Affiliation(s)
- Chongwen Wang
- College of Life Sciences, Anhui Agricultural University, Hefei, 230036, PR China; Beijing Institute of Radiation Medicine, Beijing, 100850, PR China; Beijing Key Laboratory of New Molecular Diagnosis Technologies for Infectious Diseases, Beijing, 100850, PR China
| | - Rui Xiao
- Beijing Institute of Radiation Medicine, Beijing, 100850, PR China; Beijing Key Laboratory of New Molecular Diagnosis Technologies for Infectious Diseases, Beijing, 100850, PR China
| | - Shu Wang
- College of Life Sciences, Anhui Agricultural University, Hefei, 230036, PR China; Hefei Institute of Physical Science, Chinese Academy of Sciences, Hefei, PR China
| | - Xingsheng Yang
- College of Life Sciences, Anhui Agricultural University, Hefei, 230036, PR China
| | - Zikun Bai
- Beijing Institute of Radiation Medicine, Beijing, 100850, PR China
| | - Xinying Li
- Institute of Basic Medical Sciences, Beijing, 100850, PR China
| | - Zhen Rong
- Beijing Institute of Radiation Medicine, Beijing, 100850, PR China; Beijing Key Laboratory of New Molecular Diagnosis Technologies for Infectious Diseases, Beijing, 100850, PR China.
| | - Beifen Shen
- Institute of Basic Medical Sciences, Beijing, 100850, PR China.
| | - Shengqi Wang
- College of Life Sciences, Anhui Agricultural University, Hefei, 230036, PR China; Beijing Institute of Radiation Medicine, Beijing, 100850, PR China; Beijing Key Laboratory of New Molecular Diagnosis Technologies for Infectious Diseases, Beijing, 100850, PR China.
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Fang D, Zhang S, Dai H, Li X, Hong Z, Lin Y. Electrochemiluminescent competitive immunoassay for zearalenone based on the use of a mimotope peptide, Ru(II)(bpy) 3-loaded NiFe 2O 4 nanotubes and TiO 2 mesocrystals. Mikrochim Acta 2019; 186:608. [PMID: 31392525 DOI: 10.1007/s00604-019-3714-0] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2019] [Accepted: 07/22/2019] [Indexed: 12/15/2022]
Abstract
An ultrasensitive competitive-type electrochemiluminescence immunoassay for the mycotoxin zearalenone is described. The method is based on the use of (a) a mimotope peptide that was selected from a phage displayed peptide library and used to substitute ZEN for designing the competitive assay; (b) NiFe2O4 nanotubes with large specific surface area loaded with the ECL probe Ru(bpy)32+; and (c) poly(vinylpyrrolidone) (PVP)-assisted synthesis of TiO2 mesocrystals that acts as the sensing platform and support for antibody immobilization. Under the optimized conditions and at an ECL working potential of 1.1 V, a linear response is found for ZEN in the 0.1 to 1.0 × 10-5 ng·mL-1 concentration range with a detection limit as low as 3.3 fg·mL-1. Graphical abstract An ultrasensitive competitive-type electrochemiluminescence (ECL) immunosensor based on mimotope peptide was constructed for the detection of Zearalenone.
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Affiliation(s)
- Dandan Fang
- College of Chemistry and Material & College of Physics and Energy Fujian Normal University, Fuzhou, 350108, Fujian, China
| | - Shupei Zhang
- Fujian Provincial Maternity and Children's Hospital, Fuzhou, 350108, Fujian, China
| | - Hong Dai
- College of Chemistry and Material & College of Physics and Energy Fujian Normal University, Fuzhou, 350108, Fujian, China. .,Fujian Provincial Maternity and Children's Hospital, Fuzhou, 350108, Fujian, China.
| | - Xiuhua Li
- Fujian Provincial Maternity and Children's Hospital, Fuzhou, 350108, Fujian, China.
| | - Zhensheng Hong
- College of Chemistry and Material & College of Physics and Energy Fujian Normal University, Fuzhou, 350108, Fujian, China.
| | - Yanyu Lin
- Ministry of Education Key Laboratory of Analysis and Detection for Food Safety, and Department of Chemistry, Fuzhou University, Fuzhou, 350002, People's Republic of China
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A review on advances in methods for modification of paper supports for use in point-of-care testing. Mikrochim Acta 2019; 186:521. [DOI: 10.1007/s00604-019-3626-z] [Citation(s) in RCA: 37] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2019] [Accepted: 06/17/2019] [Indexed: 10/26/2022]
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Mahmoudi T, de la Guardia M, Shirdel B, Mokhtarzadeh A, Baradaran B. Recent advancements in structural improvements of lateral flow assays towards point-of-care testing. Trends Analyt Chem 2019. [DOI: 10.1016/j.trac.2019.04.016] [Citation(s) in RCA: 66] [Impact Index Per Article: 13.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
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He B, Yan X. An amperometric zearalenone aptasensor based on signal amplification by using a composite prepared from porous platinum nanotubes, gold nanoparticles and thionine-labelled graphene oxide. Mikrochim Acta 2019; 186:383. [PMID: 31140009 DOI: 10.1007/s00604-019-3500-z] [Citation(s) in RCA: 30] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2019] [Accepted: 05/12/2019] [Indexed: 11/29/2022]
Abstract
The authors constructed a voltammetric zearalenone (ZEN) aptasensor based on use of porous platinum nanotubes, gold nanoparticles (p-PtNTs/AuNPs) and thionine (Thi) labelled graphene oxide (GO). The p-PtNTs were synthesized in-situ based on tellurium nanowires as sacrificial templates. Subsequently, thiol-modified aptamers were self-assembled on the AuNPs that had been electrodeposited on the surface of the modified electrode. The presence of p-PtNTs on the electrode increases the loading with AuNPs and aptamers. It also warrants that the Thi-labelled GO can be assembled onto the aptamer via π interactions. In the presence of ZEN, it will be bound by the aptamer. The GO/Thi conjugate will be released from the aptamer, and this causes a decrease in Thi current. Under the optimal conditions and at a typical working potential of -0.22 V (vs. Ag/AgCl), the method has a linear range that covers the 0.5 pg·mL-1 to 0.5 μg·mL-1 ZEN concentraion range and a lower detection limit of 0.17 pg·mL-1. Graphical abstract Voltammetric zearalenone aptasensor based on use of porous platinum nanotubes/gold nanoparticles and thionine labelled graphene oxide was fabricated for the detection of zearalenone.
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Affiliation(s)
- Baoshan He
- School of Food Science and Technology, Henan Key Laboratory of Cereal and Oil Food Safety Inspection and Control, Henan University of Technology, Lianhua Road 100#, Zhengzhou High & New Technology Industries Development Zone, Zhengzhou, 450001, Henan Province, People's Republic of China.
| | - Xiaohai Yan
- School of Food Science and Technology, Henan Key Laboratory of Cereal and Oil Food Safety Inspection and Control, Henan University of Technology, Lianhua Road 100#, Zhengzhou High & New Technology Industries Development Zone, Zhengzhou, 450001, Henan Province, People's Republic of China
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Fluorescent microbeads for point-of-care testing: a review. Mikrochim Acta 2019; 186:361. [PMID: 31101985 DOI: 10.1007/s00604-019-3449-y] [Citation(s) in RCA: 33] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2018] [Accepted: 04/14/2019] [Indexed: 02/06/2023]
Abstract
Microbead-based point-of-care testing (POCT) has demonstrated great promise in translating detection modalities from bench-side to bed-side. This is due to the ease of visualization, high surface area-to-volume ratio of beads for efficient target binding, and efficient encoding capability for simultaneous detection of multiple analytes. This review (with 112 references) summarizes the progress made in the field of fluorescent microbead-based POCT. Following an introduction into the field, a first large section sums up techniques and materials for preparing microbeads, typically of dye-labelled particles, various kinds of quantum dots and upconversion materials. Further subsections cover the encapsulation of nanoparticles into microbeads, decoration of nanoparticles on microbeads, and in situ embedding of nanoparticles during microbead synthesis. A next large section summarizes microbead-based fluorometric POCT, with subsections on detection of nucleic acids, proteins, circulating tumor cells and bacteria. A further section covers emerging POCT based on the use of smartphones or flexible microchips. The last section gives conclusions and an outlook on current challenges and possible solutions. Aside from giving an overview on the state of the art, we expect this article to boost the further development of POCT technology. Graphical Abstract Schematic presentation of the fabrication of microbeads, the detection targets of interest including bacteria, circulating tumor cells (CTCs), protein and nucleic acid, and the emerging point-of-care testing (POCT) platform. The colored wheels of the bus represent the fluorescent materials embedded in (red color) or decorated on the surface of microbeads (green color).
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Zuo JY, Jiao YJ, Zhu J, Ding SN. Rapid Detection of Severe Fever with Thrombocytopenia Syndrome Virus via Colloidal Gold Immunochromatography Assay. ACS OMEGA 2018; 3:15399-15406. [PMID: 30556007 PMCID: PMC6288773 DOI: 10.1021/acsomega.8b02366] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/12/2018] [Accepted: 10/31/2018] [Indexed: 05/19/2023]
Abstract
To develop the point-of-care testing method to facilitate the clinical detection of severe fever with thrombocytopenia syndrome virus (SFTSV), colloidal gold paper-based lateral flow immunochromatography test strips (LFITSs) have been fabricated for the rapid detection for the first time. The pH value and the amount of monoclonal antibody to prepare colloidal gold nanoparticle-labeled monoclonal antibody bioconjugates were optimized. In addition, 0.4% bovine serum albumin was considered to be the best concentration for blocking nitrocellulose membranes. Under optimal conditions, the limit of detection for SFTSV was as low as 1 ng/mL depending on a visual line. Meanwhile, the entire detection process required no more than 10 min with a volume of only 50 μL of the analyte solution. Moreover, paper-based LFITSs were evaluated in real samples of human serum of patients with satisfactory results. In addition, all strips were of high stability and specificity. In the light of advantages such as simple, portable, rapid, and low cost, the developed LFITSs will extensively come into service, especially in remote areas.
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Affiliation(s)
- Jia-Ying Zuo
- Jiangsu
Province Hi-Tech Key Laboratory for Bio-Medical Research, School of
Chemistry and Chemical Engineering, Southeast
University, Nanjing 211189, China
| | - Yong-Jun Jiao
- Jiangsu
Provincial Center for Disease Control and Prevention, Nanjing 210009, China
| | - Jin Zhu
- Huadong
Medical Institute of Biotechniques, Nanjing 210002, China
| | - Shou-Nian Ding
- Jiangsu
Province Hi-Tech Key Laboratory for Bio-Medical Research, School of
Chemistry and Chemical Engineering, Southeast
University, Nanjing 211189, China
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Colorimetric zearalenone assay based on the use of an aptamer and of gold nanoparticles with peroxidase-like activity. Mikrochim Acta 2018; 185:535. [PMID: 30406298 DOI: 10.1007/s00604-018-3078-x] [Citation(s) in RCA: 54] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2018] [Accepted: 10/28/2018] [Indexed: 10/27/2022]
Abstract
An aptamer based colorimetric assay is described for the determination of zearalenone (ZEN). It is based on the inhibition of the peroxidase-mimicking activity of gold nanoparticles (AuNPs) by the ZEN aptamer. However, in the presence of ZEN, the aptamer is bound by ZEN and can no longer inhibit the peroxidase-mimicking activity of AuNPs. The color change of solution is related to ZEN concentration and observed with bare eyes. Under optimal conditions, the absorbance (at 630 nm) increases linearly in the ZEN concentration range of 10-250 ng·mL-1, and the limit of detection is 10 ng·mL-1. The specificity of the assay was verified by studying the effect of potential interferents. The recoveries from ZEN spiked corn and corn oil range from 92 to 110%, and the relative standard deviations are between 2.4 and 6.4%. The results are in good agreement with those obtained by an ELISA. Graphical abstract Schematic presentation of colorimetric assay for rapid and sensitive determination of zearalenone (ZEN) based on the inhibition of ZEN aptamer on the the peroxidase-like activity of gold nanoparticle (AuNPs).
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Fluorometric lateral flow immunochromatographic zearalenone assay by exploiting a quencher system composed of carbon dots and silver nanoparticles. Mikrochim Acta 2018; 185:388. [PMID: 30046913 DOI: 10.1007/s00604-018-2916-1] [Citation(s) in RCA: 27] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2018] [Accepted: 07/13/2018] [Indexed: 01/21/2023]
Abstract
It is found that the fluorescence of carbon dots (CD) with an emission peak at 459 nm is strongly quenched by silver nanoparticles (AgNPs) with their absorption peak at 430 nm. The finding was applied in a fluorescence quenchometric lateral flow immunochromatographic assay for detection of zearalenone (ZEN) with CDs conjugated to ovalbumin (OVA) as donor signal probe and AgNP-Ab as acceptor signal probe. The assay has an LOD of 0.1 μg·L-1 for ZEN. This is 10 times better than the respective "turn-off" AgNP-based LFIA. In case of cereal samples and their products, the LODs range from 1 to 2.5 μg·kg-1. Only minor cross reactivity is found for fusarium toxins, and no cross-sensitivity for aflatoxin B1, T-2 mycotoxin, ochratoxin A, deoxynivalenol, and fumonisin B1. The assay represents a simple, sensitive, and rapid tool for determination of ZEN in cereal samples and their products. Graphical abstract Schematic presentation of fluorescence quenching lateral flow immunochromatographic assay (FLFIA) based on carbon dots (CD) and silver nanoparticle (AgNP) fluorescence resonance energy transfer (FRET) system for the rapid high sensitive detection of zearalenone (ZEN) in cereal samples.
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