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Das T, Das S, A BC. Fabrication of a Label-Free Immunosensor Using Surface-Engineered AuPt@GQD Core-Shell Nanocomposite for the Selective Detection of Trace Levels of Escherichia coli from Contaminated Food Samples. ACS Biomater Sci Eng 2024; 10:4018-4034. [PMID: 38816970 DOI: 10.1021/acsbiomaterials.4c00297] [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] [Indexed: 06/01/2024]
Abstract
Fabrication of label-free immunosensors is highly necessitated due to their simplicity, cost-effectiveness, and robustness. Herein, we report the facile development of a label-free, direct, rapid, capacitive immunosensor for ultrasensitive and rapid recognition of trace levels of Escherichia coli from contaminated food samples. This was achieved using gold platinum core-shell nanoparticles loaded with graphene quantum dots (AuPt@GQDs) that were utilized as electrode modifiers. The incorporation of GQDs to the surface of AuPt core-shell nanoparticles was performed using the "greener" probe-sonication method. The electrochemical properties of AuPt@GQDs, determined using cyclic voltammetry and electrochemical impedance spectroscopy, suggested the optimized loading concentration of AuPt to be 0.05% in the core-shell nanocomposite to exhibit the highest current response. Furthermore, immobilization of anti-E. coli monoclonal antibodies (anti-E. coli mAb) onto the surface of modified electrodes was performed using amine coupling. The high specific binding of E. coli cells onto the surface of the immuno-electrode was measured as a direct function of change in transient capacitance with time that was measured at low and high frequencies. The resultant immunosensor (bovine serum albumin/anti-E. coli mAb/AuPt0.05@GQDs/FTO) demonstrated a detection range (5 to 4.5 × 103 cells/mL), with the detection limit as low as 1.5 × 102 cells/mL, and an excellent sensitivity ∼171,281.40 μF-1 mL cells-1 cm-2 without the use of any labels (R2-0.99). These findings were further verified using real sample analysis wherein the immuno-electrode demonstrated outstanding sensitivity, the highest noticed so far. More interestingly, the high resuability ∼48 weeks (RSD-5.92%) and excellent reproducibility in detection results (RSD ∼ 9.5%) testify its potential use in a clinical setting. The results reveal the usefulness of the surface-engineered AuPt@GQDs core-shell nanocomposite as an electrode modifier that can be used for the development of newer on-site monitoring devices to estimate trace levels of pathogens present as contaminants in food samples.
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Affiliation(s)
- Tushar Das
- Department of Chemistry, National Institute of Technology Patna, Bihar 800005, India
| | - Subrata Das
- Department of Chemistry, National Institute of Technology Patna, Bihar 800005, India
| | - Betty C A
- Chemistry Division, Bhabha Atomic Research Centre, Mumbai 400085, India
- Homi Bhabha National Institute, Mumbai 400085, India
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Teeparuksapun K, Hedström M, Mattiasson B. A Sensitive Capacitive Biosensor for Protein a Detection Using Human IgG Immobilized on an Electrode Using Layer-by-Layer Applied Gold Nanoparticles. SENSORS (BASEL, SWITZERLAND) 2021; 22:99. [PMID: 35009642 PMCID: PMC8747357 DOI: 10.3390/s22010099] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/24/2021] [Revised: 11/20/2021] [Accepted: 11/23/2021] [Indexed: 06/14/2023]
Abstract
A capacitive biosensor for the detection of protein A was developed. Gold electrodes were fabricated by thermal evaporation and patterned by photoresist photolithography. A layer-by-layer (LbL) assembly of thiourea (TU) and HAuCl4 and chemical reduction was utilized to prepare a probe with a different number of layers of TU and gold nanoparticles (AuNPs). The LbL-modified electrodes were used for the immobilization of human IgG. The binding interaction between human IgG and protein A was detected as a decrease in capacitance signal, and that change was used to investigate the correlation between the height of the LbL probe and the sensitivity of the capacitive measurement. The results showed that the initial increase in length of the LbL probe can enhance the amount of immobilized human IgG, leading to a more sensitive assay. However, with thicker LbL layers, a reduction of the sensitivity of the measurement was registered. The performance of the developed system under optimum set-up showed a linearity in response from 1 × 10-16 to 1 × 10-13 M, with the limit detection of 9.1 × 10-17 M, which could be interesting for the detection of trace amounts of protein A from affinity isolation of therapeutic monoclonal antibodies.
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Affiliation(s)
- Kosin Teeparuksapun
- Science Program, Department of General Education, Faculty of Liberal Arts, Rajamangala University of Technology Srivijaya, Songkhla 90000, Thailand;
- Division of Biotechnology, Lund University, P.O. Box 124, 221 00 Lund, Sweden;
| | - Martin Hedström
- Division of Biotechnology, Lund University, P.O. Box 124, 221 00 Lund, Sweden;
| | - Bo Mattiasson
- Division of Biotechnology, Lund University, P.O. Box 124, 221 00 Lund, Sweden;
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Lakshmanakumar M, Nesakumar N, Sethuraman S, S RK, Krishnan UM, Rayappan JBB. Fabrication of GQD-Electrodeposited Screen-Printed Carbon Electrodes for the Detection of the CRP Biomarker. ACS OMEGA 2021; 6:32528-32536. [PMID: 34901602 PMCID: PMC8655768 DOI: 10.1021/acsomega.1c04043] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/29/2021] [Accepted: 10/27/2021] [Indexed: 05/24/2023]
Abstract
The traditional three-electrode electrochemical system used in the development of biosensors for detecting various biomarkers of interest necessitates the use of bulk electrodes, which precludes the deployment of handheld electrochemical devices in clinical applications. Affordable screen-printed carbon electrodes (SPCEs) modified with functional interfaces are being developed to enhance the sensitivity of a compact sensing system as a whole. In this work, SPCEs were fabricated on an overhead projection (OHP) sheet in three different active areas of 2 × 2, 3 × 3, and 4 × 4 mm2 using a screen printing technique, and then ∼2 nm sized graphene quantum dots (GQDs) were electrodeposited over the SPCE surface to add functionality for the detection of ultralow levels of one of the cardiac biomarkers, C-reactive protein (CRP). The proposed mediator-dependent voltammetric biosensor exhibited good sensitivity, a low detection limit, and a linear range of 2.45 μA ng-1 mL-1 cm-2, 0.036 ng mL-1, and 0.5-10 ng mL-1, respectively. The fabricated SPCE/GQDs/anti-CRP biosensor could rapidly detect CRP in less than 25 s. The intra- and interassays were performed with five sensor strips, which showed a minimum standard deviation of 1.85 and 2.8%, respectively. The SPCE/GQDs/anti-CRP electrode was used to detect CRP concentrations in a ringer lactate solution. Thus, the developed biosensor has all of the characteristics such as rapidity, inexpensive disposable electrodes, miniaturization, and a lower detection limit needed to evolve as a point-of-care (PoC) application.
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Affiliation(s)
- Muthaiyan Lakshmanakumar
- Centre
for Nanotechnology & Advanced Biomaterials (CeNTAB), School of Electrical
& Electronics Engineering (SEEE), School of Chemical & Biotechnology
(SCBT), School of Arts, Science & Humanities (SASH), SASTRA Deemed University, Thanjavur 613 401, Tamil Nadu, India
| | - Noel Nesakumar
- Centre
for Nanotechnology & Advanced Biomaterials (CeNTAB), School of Electrical
& Electronics Engineering (SEEE), School of Chemical & Biotechnology
(SCBT), School of Arts, Science & Humanities (SASH), SASTRA Deemed University, Thanjavur 613 401, Tamil Nadu, India
| | - Swaminathan Sethuraman
- Centre
for Nanotechnology & Advanced Biomaterials (CeNTAB), School of Electrical
& Electronics Engineering (SEEE), School of Chemical & Biotechnology
(SCBT), School of Arts, Science & Humanities (SASH), SASTRA Deemed University, Thanjavur 613 401, Tamil Nadu, India
| | - Rajan K. S
- Centre
for Nanotechnology & Advanced Biomaterials (CeNTAB), School of Electrical
& Electronics Engineering (SEEE), School of Chemical & Biotechnology
(SCBT), School of Arts, Science & Humanities (SASH), SASTRA Deemed University, Thanjavur 613 401, Tamil Nadu, India
| | - Uma Maheswari Krishnan
- Centre
for Nanotechnology & Advanced Biomaterials (CeNTAB), School of Electrical
& Electronics Engineering (SEEE), School of Chemical & Biotechnology
(SCBT), School of Arts, Science & Humanities (SASH), SASTRA Deemed University, Thanjavur 613 401, Tamil Nadu, India
| | - John Bosco Balaguru Rayappan
- Centre
for Nanotechnology & Advanced Biomaterials (CeNTAB), School of Electrical
& Electronics Engineering (SEEE), School of Chemical & Biotechnology
(SCBT), School of Arts, Science & Humanities (SASH), SASTRA Deemed University, Thanjavur 613 401, Tamil Nadu, India
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Biosensors for penicillin quantification: a comprehensive review. Biotechnol Lett 2020; 42:1829-1846. [DOI: 10.1007/s10529-020-02970-6] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2020] [Accepted: 07/13/2020] [Indexed: 12/21/2022]
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Kordasht HK, Hassanpour S, Baradaran B, Nosrati R, Hashemzaei M, Mokhtarzadeh A, la Guardia MD. Biosensing of microcystins in water samples; recent advances. Biosens Bioelectron 2020; 165:112403. [PMID: 32729523 DOI: 10.1016/j.bios.2020.112403] [Citation(s) in RCA: 33] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2020] [Revised: 06/16/2020] [Accepted: 06/19/2020] [Indexed: 02/07/2023]
Abstract
Safety and quality of water are significant matters for agriculture, animals and human health. Microcystins, as secondary metabolite of cyanobacteria (blue-green algae) and cyclic heptapeptide cyanotoxin, are one of the main marine toxins in continental aquatic ecosystems. More than 100 microcystins have been identified, of which MC-LR is the most important type due to its high toxicity and common detection in the environment. Climate change is an impressive factor with effects on cyanobacterial blooms as source of microcystins. The presence of this cyanotoxin in freshwater, drinking water, water reservoir supplies and food (vegetable, fish and shellfish) has created a common phenomenon in eutrophic freshwater ecosystems worldwide. International public health organizations have categorized microcystins as a kind of neurotoxin and carcinogen. There are several conventional methods for detection of microcystins. The limitations of traditional methods have encouraged the development of innovative methods for detection of microcystins. In recent years, the developed sensor techniques, with advantages, such as accuracy, reproducibility, portability and low cost, have attracted considerable attention. This review compares the well-known of biosensor types for detection of microcystins with a summary of their analytical performance.
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Affiliation(s)
- Houman Kholafazad Kordasht
- Department of Food Hygiene and Aquatic, Faculty of Veterinary Medicine, University of Tabriz, Tabriz, Iran
| | - Soodabeh Hassanpour
- Department of Analytical Chemistry, Faculty of Science, Palacky University Olomouc, 17. Listopadu 12, 77146, Olomouc, Czech Republic
| | - Behzad Baradaran
- Immunology Research Center, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Rahim Nosrati
- Department of Pharmaceutical Biotechnology, School of Pharmacy, Mashhad University of Medical Sciences, Mashhad, Iran; Cellular and Molecular Research Center, School of Medicine, Guilan University of Medical Sciences, Rasht, Iran
| | - Mahmoud Hashemzaei
- Department of Pharmacodynamics and Toxicology, School of Pharmacy, Zabol University of Medical Sciences, Zabol, Iran
| | - Ahad Mokhtarzadeh
- Immunology Research Center, Tabriz University of Medical Sciences, Tabriz, Iran.
| | - Miguel de la Guardia
- Department of Analytical Chemistry, University of Valencia, Dr. Moliner 50, 46100, Burjassot, Valencia, Spain.
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Choosang J, Thavarungkul P, Kanatharana P, Numnuam A. AuNPs/PpPD/PEDOT:PSS-Fc modified screen-printed carbon electrode label-free immunosensor for sensitive and selective determination of human serum albumin. Microchem J 2020. [DOI: 10.1016/j.microc.2020.104709] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
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Medyantseva EP, Brusnitsyn DV, Gazizullina ER, Varlamova RM, Konovalova OA, Budnikov HC. Hybrid Nanocomposites as Electrode Modifiers in Amperometric Immunosensors for the Determination of Amitriptyline. JOURNAL OF ANALYTICAL CHEMISTRY 2020. [DOI: 10.1134/s1061934820040103] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
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Lin CH, Lin MJ, Huang JD, Chuang YS, Kuo YF, Chen JC, Wu CC. Label-Free Impedimetric Immunosensors Modulated by Protein A/Bovine Serum Albumin Layer for Ultrasensitive Detection of Salbutamol. SENSORS 2020; 20:s20030771. [PMID: 32023863 PMCID: PMC7038488 DOI: 10.3390/s20030771] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/30/2019] [Revised: 01/24/2020] [Accepted: 01/30/2020] [Indexed: 11/16/2022]
Abstract
The sensing properties of immunosensors are determined not only by the amount of immobilized antibodies but also by the number of effective antigen-binding sites of the immobilized antibody. Protein A (PA) exhibits a high degree of affinity with the Fc part of IgG antibody to feasibly produce oriented antibody immobilization. This work proposes a simple method to control the PA surface density on gold nanostructure (AuNS)-deposited screen-printed carbon electrodes (SPCEs) by mixing concentration-varied PA and bovine serum albumin (BSA), and to explore the effect of PA density on the affinity attachment of anti-salbutamol (SAL) antibodies by electrochemical impedance spectroscopy. A concentration of 100 μg/mL PA and 100 μg/mL BSA can obtain a saturated coverage on the 3-mercaptoproponic acid (MPA)/AuNS/SPCEs and exhibit a 50% PA density to adsorb the amount of anti-SAL, more than other concentration-varied PA/BSA-modified electrodes. Compared with the randomly immobilized anti-SAL/MPA/AuNS/SPCEs and the anti-SAL/PA(100 μg/mL):BSA(0 μg/mL)/MPA/AuNS/SPCE, the anti-SAL/PA(100 μg/mL): BSA(100 μg/mL)/MPA/AuNS/SPCE-based immunosensors have better sensing properties for SAL detection, with an extremely low detection limit of 0.2 fg/mL and high reproducibility (<2.5% relative standard deviation). The mixture of PA(100 μg/mL):BSA(100 μg/mL) for the modification of AuNS/SPCEs has great promise for forming an optimal protein layer for the oriented adsorption of IgG antibodies to construct ultrasensitive SAL immunosensors.
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Affiliation(s)
- Chia-Hung Lin
- Department of Bio-industrial Mechatronics Engineering, National Chung Hsing University, No. 145, Xingda Rd., South Dist., Taichung City 402, Taiwan; (C.-H.L.); (M.-J.L.); (J.-D.H.); (Y.-S.C.)
| | - Ming-Jie Lin
- Department of Bio-industrial Mechatronics Engineering, National Chung Hsing University, No. 145, Xingda Rd., South Dist., Taichung City 402, Taiwan; (C.-H.L.); (M.-J.L.); (J.-D.H.); (Y.-S.C.)
| | - Jie-De Huang
- Department of Bio-industrial Mechatronics Engineering, National Chung Hsing University, No. 145, Xingda Rd., South Dist., Taichung City 402, Taiwan; (C.-H.L.); (M.-J.L.); (J.-D.H.); (Y.-S.C.)
| | - Yu-Sheng Chuang
- Department of Bio-industrial Mechatronics Engineering, National Chung Hsing University, No. 145, Xingda Rd., South Dist., Taichung City 402, Taiwan; (C.-H.L.); (M.-J.L.); (J.-D.H.); (Y.-S.C.)
| | - Yu-Fen Kuo
- Metal Industries Research & Development Centre, Kaohsiung 811, Taiwan;
| | - Jung-Chih Chen
- Institute of Biomedical Engineering, National Chiao Tung University, 1001 University Road, Hsinchu 30010, Taiwan
- Correspondence: (J.-C.C.); (C.-C.W.); Tel.: +886-3-5712-121 (ext. 54047) (J.-C.C.); +886-4-2285-1268 (C.-C.W.)
| | - Ching-Chou Wu
- Department of Bio-industrial Mechatronics Engineering, National Chung Hsing University, No. 145, Xingda Rd., South Dist., Taichung City 402, Taiwan; (C.-H.L.); (M.-J.L.); (J.-D.H.); (Y.-S.C.)
- Innovation and Development Center of Sustainable Agriculture, National Chung Hsing University, No. 145, Xingda Rd., South Dist., Taichung City 402, Taiwan
- Correspondence: (J.-C.C.); (C.-C.W.); Tel.: +886-3-5712-121 (ext. 54047) (J.-C.C.); +886-4-2285-1268 (C.-C.W.)
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Vogiazi V, de la Cruz A, Mishra S, Shanov V, Heineman WR, Dionysiou DD. A Comprehensive Review: Development of Electrochemical Biosensors for Detection of Cyanotoxins in Freshwater. ACS Sens 2019; 4:1151-1173. [PMID: 31056912 PMCID: PMC6625642 DOI: 10.1021/acssensors.9b00376] [Citation(s) in RCA: 66] [Impact Index Per Article: 13.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
Cyanobacteria harmful algal blooms are increasing in frequency and cyanotoxins have become an environmental and public concern in the U.S. and worldwide. In this Review, the majority of reported studies and developments of electrochemical affinity biosensors for cyanotoxins are critically reviewed and discussed. Essential background information about cyanobacterial toxins and electrochemical biosensors is combined with the rapidly moving development of electrochemical biosensors for these toxins. Current issues and future challenges for the development of useful electrochemical biosensors for cyanotoxin detection that meet the demands for applications in field freshwater samples are discussed. The major aspects of the entire review article in a prescribed sequence include (i) the state-of-the-art knowledge of the toxicity of cyanotoxins, (ii) important harmful algal bloom events, (iii) advisories, guidelines, and regulations, (iv) conventional analytical methods for determination of cyanotoxins, (v) electrochemical transduction, (vi) recognition receptors, (vii) reported electrochemical biosensors for cyanotoxins, (viii) summary of analytical performance, and (ix) recent advances and future trends. Discussion includes electrochemical techniques and devices, biomolecules with high affinity, numerous array designs, various detection approaches, and research strategies in tailoring the properties of the transducer-biomolecule interface. Scientific and engineering aspects are presented in depth. This review aims to serve as a valuable source to scientists and engineers entering the interdisciplinary field of electrochemical biosensors for detection of cyanotoxins in freshwaters.
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Affiliation(s)
- Vasileia Vogiazi
- Environmental Engineering and Science Program, Department of Chemical and Environmental Engineering (ChEE) , University of Cincinnati , Cincinnati , Ohio 45221 , United States
| | - Armah de la Cruz
- Office of Research and Development , US Environmental Protection Agency , Cincinnati , Ohio 45220 , United States
| | - Siddharth Mishra
- Mechanical and Materials Engineering , University of Cincinnati , Cincinnati 45221 , Ohio United States
| | - Vesselin Shanov
- Environmental Engineering and Science Program, Department of Chemical and Environmental Engineering (ChEE) , University of Cincinnati , Cincinnati , Ohio 45221 , United States
- Mechanical and Materials Engineering , University of Cincinnati , Cincinnati 45221 , Ohio United States
| | - William R Heineman
- Department of Chemistry , University of Cincinnati , Cincinnati , Ohio 45221 , United States
| | - Dionysios D Dionysiou
- Environmental Engineering and Science Program, Department of Chemical and Environmental Engineering (ChEE) , University of Cincinnati , Cincinnati , Ohio 45221 , United States
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Niyomdecha S, Limbut W, Numnuam A, Kanatharana P, Charlermroj R, Karoonuthaisiri N, Thavarungkul P. Phage-based capacitive biosensor for Salmonella detection. Talanta 2018; 188:658-664. [PMID: 30029427 DOI: 10.1016/j.talanta.2018.06.033] [Citation(s) in RCA: 50] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2018] [Revised: 06/09/2018] [Accepted: 06/09/2018] [Indexed: 11/18/2022]
Abstract
This article reports the detection of Salmonella spp. based on M13 bacteriophage in a capacitive flow injection system. Salmonella-specific M13 bacteriophage was immobilized on a polytyramine/gold surface using glutaraldehyde as a crosslinker. The M13 bacteriophage modified electrode can specifically bind to Salmonella spp. via the amino acid groups on the filamentous phage. An alkaline solution was used to break the binding between the sensing surface and the analyte to allow renewable use up to 40 times. This capacitive system provided good reproducibility with a relative standard deviation (RSD) of 1.1%. A 75 µL min-1 flow rate and a 300 µL sample volume provided a wide linear range, from 2.0 × 102 to 1.0 × 107 cfu mL-1, with a detection limit of 200 cfu mL-1. Bacteria concentration can be analyzed within 40 min after the sample injection. When applied to test real samples (raw chicken meat) it provided good recoveries (100-111%). An enrichment process was also explored to increase the bacteria concentration, enabling a quantitative detection of Salmonella spp. This biosensor opens a new opportunity for the detection of pathogenic bacteria using bacteriophage.
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Affiliation(s)
- Saroh Niyomdecha
- Trace Analysis and Biosensor Research Center, Prince of Songkla University, Hat Yai, Songkhla 90112, Thailand; Center of Excellence for Innovation in Chemistry, Faculty of Science, Prince of Songkla University, Hat Yai, Songkhla 90112, Thailand; Department of Chemistry, Faculty of Science, Prince of Songkla University, Hat Yai, Songkhla 90112, Thailand
| | - Warakorn Limbut
- Trace Analysis and Biosensor Research Center, Prince of Songkla University, Hat Yai, Songkhla 90112, Thailand; Center of Excellence for Innovation in Chemistry, Faculty of Science, Prince of Songkla University, Hat Yai, Songkhla 90112, Thailand; Department of Applied Science, Faculty of Science, Prince of Songkla University, Hat Yai, Songkhla 90112, Thailand
| | - Apon Numnuam
- Trace Analysis and Biosensor Research Center, Prince of Songkla University, Hat Yai, Songkhla 90112, Thailand; Center of Excellence for Innovation in Chemistry, Faculty of Science, Prince of Songkla University, Hat Yai, Songkhla 90112, Thailand; Department of Chemistry, Faculty of Science, Prince of Songkla University, Hat Yai, Songkhla 90112, Thailand
| | - Proespichaya Kanatharana
- Trace Analysis and Biosensor Research Center, Prince of Songkla University, Hat Yai, Songkhla 90112, Thailand; Center of Excellence for Innovation in Chemistry, Faculty of Science, Prince of Songkla University, Hat Yai, Songkhla 90112, Thailand; Department of Chemistry, Faculty of Science, Prince of Songkla University, Hat Yai, Songkhla 90112, Thailand
| | - Ratthaphol Charlermroj
- National Center for Genetic Engineering and Biotechnology, 113 Thailand Science Park, Phahonyothin Road, Khlong Nueng, Khlong Luang, Pathum Thani 12120, Thailand
| | - Nitsara Karoonuthaisiri
- National Center for Genetic Engineering and Biotechnology, 113 Thailand Science Park, Phahonyothin Road, Khlong Nueng, Khlong Luang, Pathum Thani 12120, Thailand.
| | - Panote Thavarungkul
- Trace Analysis and Biosensor Research Center, Prince of Songkla University, Hat Yai, Songkhla 90112, Thailand; Center of Excellence for Innovation in Chemistry, Faculty of Science, Prince of Songkla University, Hat Yai, Songkhla 90112, Thailand; Department of Physics, Faculty of Science, Prince of Songkla University, Hat Yai, Songkhla 90112, Thailand.
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Label-Free Electrochemical Immunoassay for C-Reactive Protein. BIOSENSORS-BASEL 2018; 8:bios8020034. [PMID: 29601504 PMCID: PMC6022967 DOI: 10.3390/bios8020034] [Citation(s) in RCA: 39] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/07/2018] [Revised: 03/27/2018] [Accepted: 03/27/2018] [Indexed: 12/27/2022]
Abstract
C-reactive protein (CRP) is one of the most expressed proteins in blood during acute phase inflammation, and its minute level increase has also been recognized for the clinical diagnosis of cardio vascular diseases. Unfortunately, the available commercial immunoassays are labour intensive, require large sample volumes, and have practical limitations, such as low stability and high production costs. Hence, we have developed a simple, cost effective, and label-free electrochemical immunoassay for the measurement of CRP in a drop of serum sample using an immunosensor strip made up of a screen printed carbon electrode (SPE) modified with anti-CRP functionalized gold nanoparticles (AuNPs). The measurement relies on the decrease of the oxidation current of the redox indicator Fe3+/Fe2+, resulting from the immunoreaction between CRP and anti-CRP. Under optimal conditions, the present immunoassay measures CRP in a linear range from 0.4–200 nM (0.047–23.6 µg mL−1), with a detection limit of 0.15 nM (17 ng mL−1, S/N = 3) and sensitivity of 90.7 nA nM−1, in addition to a good reproducibility and storage stability. The analytical applicability of the presented immunoassay is verified by CRP measurements in human blood serum samples. This work provides the basis for a low-priced, safe, and easy-to-use point-of-care immunosensor assay to measure CRP at clinically relevant concentrations.
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Fabrication of SrTiO₃ Layer on Pt Electrode for Label-Free Capacitive Biosensors. BIOSENSORS-BASEL 2018; 8:bios8010026. [PMID: 29547521 PMCID: PMC5872074 DOI: 10.3390/bios8010026] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/22/2018] [Revised: 03/09/2018] [Accepted: 03/13/2018] [Indexed: 11/27/2022]
Abstract
Due to their interesting ferroelectric, conductive and dielectric properties, in recent years, perovskite-structured materials have begun to attract increasing interest in the biosensing field. In this study, a strontium titanate perovskite layer (SrTiO3) has been synthesized on a platinum electrode and exploited for the development of an impedimetric label-free immunosensor for Escherichia coli O157:H7 detection. The electrochemical characterization of the perovskite-modified electrode during the construction of the immunosensor, as well as after the interaction with different E. coli O157:H7 concentrations, showed a reproducible decrease of the total capacitance of the system that was used for the analytical characterization of the immunosensor. Under optimized conditions, the capacitive immunosensor showed a linear relationship from to 1 to 7 log cfu/mL with a low detection limit of 1 log cfu/mL. Moreover, the atomic force microscopy (AFM) technique underlined the increase in roughness of the SrTiO3-modified electrode surface after antibody immobilization, as well as the effective presence of cells with the typical size of E. coli.
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Svalova TS, Malysheva NN, Kozitsina AN. Structure of the receptor layer in electrochemical immunosensors. Modern trends and prospects of development. Russ Chem Bull 2018. [DOI: 10.1007/s11172-017-1951-0] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
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Niyomdecha S, Limbut W, Numnuam A, Asawatreratanakul P, Kanatharana P, Thavarungkul P. Capacitive antibacterial susceptibility screening test with a simple renewable sensing surface. Biosens Bioelectron 2017; 96:84-88. [DOI: 10.1016/j.bios.2017.04.042] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2017] [Revised: 04/11/2017] [Accepted: 04/25/2017] [Indexed: 10/19/2022]
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15
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Scaffolds for oriented and close-packed immobilization of immunoglobulins. Biosens Bioelectron 2017; 89:810-821. [DOI: 10.1016/j.bios.2016.10.009] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2016] [Revised: 09/27/2016] [Accepted: 10/03/2016] [Indexed: 02/07/2023]
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LIN CH, LIN MJ, WU CC. Effect of the Chain Length of a Modified Layer and Surface Roughness of an Electrode on Impedimetric Immunosensors. ANAL SCI 2017; 33:327-333. [DOI: 10.2116/analsci.33.327] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Affiliation(s)
- Chia-Hung LIN
- Department of Bio-industrial Mechatronics Engineering, National Chung Hsing University
| | - Ming-Jie LIN
- Department of Bio-industrial Mechatronics Engineering, National Chung Hsing University
| | - Ching-Chou WU
- Department of Bio-industrial Mechatronics Engineering, National Chung Hsing University
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D’Souza AA, Kumari D, Banerjee R. Nanocomposite biosensors for point-of-care—evaluation of food quality and safety. NANOBIOSENSORS 2017. [PMCID: PMC7149521 DOI: 10.1016/b978-0-12-804301-1.00015-1] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Abstract
Nanosensors have wide applications in the food industry. Nanosensors based on quantum dots for heavy metal and organophosphate pesticides detection, and nanocomposites as indicators for shelf life of fish/meat products, have served as important tools for food quality and safety assessment. Luminescent labels consisting of NPs conjugated to aptamers have been popular for rapid detection of infectious and foodborne pathogens. Various detection technologies, including microelectromechanical systems for gas analytes, microarrays for genetically modified foods, and label-free nanosensors using nanowires, microcantilevers, and resonators are being applied extensively in the food industry. An interesting aspect of nanosensors has also been in the development of the electronic nose and electronic tongue for assessing organoleptic qualities, such as, odor and taste of food products. Real-time monitoring of food products for rapid screening, counterfeiting, and tracking has boosted ingenious, intelligent, and innovative packaging of food products. This chapter will give an overview of the contribution of nanotechnology-based biosensors in the food industry, ongoing research, technology advancements, regulatory guidelines, future challenges, and industrial outlook.
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Hu J, Yew CHT, Chen X, Feng S, Yang Q, Wang S, Wee WH, Pingguan-Murphy B, Lu TJ, Xu F. Paper-based capacitive sensors for identification and quantification of chemicals at the point of care. Talanta 2016; 165:419-428. [PMID: 28153277 DOI: 10.1016/j.talanta.2016.12.086] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2016] [Revised: 12/28/2016] [Accepted: 12/30/2016] [Indexed: 12/20/2022]
Abstract
The identification and quantification of chemicals play a vital role in evaluation and surveillance of environmental health and safety. However, current techniques usually depend on costly equipment, professional staff, and/or essential infrastructure, limiting their accessibility. In this work, we develop paper-based capacitive sensors (PCSs) that allow simple, rapid identification and quantification of various chemicals from microliter size samples with the aid of a handheld multimeter. PCSs are low-cost parallel-plate capacitors (~$0.01 per sensor) assembled from layers of aluminum foil and filter paper via double-sided tape. The developed PCSs can identify different kinds of fluids (e.g., organic chemicals) and quantify diverse concentrations of substances (e.g., heavy metal ions) based on differences in dielectric properties, including capacitance, frequency spectrum, and dielectric loss tangent. The PCS-based method enables chemical identification and quantification to take place much cheaply, simply, and quickly at the point-of-care (POC), holding great promise for environmental monitoring in resource-limited settings.
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Affiliation(s)
- Jie Hu
- MOE Key Laboratory of Biomedical Information Engineering, School of Life Science and Technology, Xi'an Jiaotong University, Xi'an 710049, China; Bioinspired Engineering and Biomechanics Center (BEBC), Xi'an Jiaotong University, Xi'an 710049, China
| | - Chee-Hong Takahiro Yew
- Bioinspired Engineering and Biomechanics Center (BEBC), Xi'an Jiaotong University, Xi'an 710049, China; Department of Biomedical Engineering, Faculty of Engineering, University of Malaya, Kuala Lumpur 50603, Malaysia
| | - Xiaoshuang Chen
- Bioinspired Engineering and Biomechanics Center (BEBC), Xi'an Jiaotong University, Xi'an 710049, China
| | - Shangsheng Feng
- Bioinspired Engineering and Biomechanics Center (BEBC), Xi'an Jiaotong University, Xi'an 710049, China; MOE Key Laboratory for Multifunctional Materials and Structures (LMMS), School of Aerospace, Xi'an Jiaotong University, Xi'an 710049, China; State Key Laboratory of Mechanical Structure Strength and Vibration, School of Aerospace, Xi'an Jiaotong University, Xi'an 710049, China
| | - Qu Yang
- Bioinspired Engineering and Biomechanics Center (BEBC), Xi'an Jiaotong University, Xi'an 710049, China
| | - Shuqi Wang
- State Key Laboratory for Diagnosis and Treatment of Infectious Diseases, First Affiliated Hospital, College of Medicine, Zhejiang University, Hangzhou 310003, China; Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases, Hangzhou 310058, China; Institute for Translational Medicine, Zhejiang University, Hangzhou 310029, China
| | - Wei-Hong Wee
- Bioinspired Engineering and Biomechanics Center (BEBC), Xi'an Jiaotong University, Xi'an 710049, China; Department of Biomedical Engineering, Faculty of Engineering, University of Malaya, Kuala Lumpur 50603, Malaysia
| | - Belinda Pingguan-Murphy
- Department of Biomedical Engineering, Faculty of Engineering, University of Malaya, Kuala Lumpur 50603, Malaysia
| | - Tian Jian Lu
- Bioinspired Engineering and Biomechanics Center (BEBC), Xi'an Jiaotong University, Xi'an 710049, China.
| | - Feng Xu
- MOE Key Laboratory of Biomedical Information Engineering, School of Life Science and Technology, Xi'an Jiaotong University, Xi'an 710049, China; Bioinspired Engineering and Biomechanics Center (BEBC), Xi'an Jiaotong University, Xi'an 710049, China.
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DNA aptamer selection and aptamer-based fluorometric displacement assay for the hepatotoxin microcystin-RR. Mikrochim Acta 2016. [DOI: 10.1007/s00604-016-1904-6] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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20
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Li H, Xu B, Wang D, Zhou Y, Zhang H, Xia W, Xu S, Li Y. Immunosensor for trace penicillin G detection in milk based on supported bilayer lipid membrane modified with gold nanoparticles. J Biotechnol 2015; 203:97-103. [PMID: 25840366 DOI: 10.1016/j.jbiotec.2015.03.013] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2014] [Revised: 03/16/2015] [Accepted: 03/20/2015] [Indexed: 10/23/2022]
Abstract
In this work, we developed an immunosensor for electrochemical detection of penicillin G at trace level. The biosensor was fabricated by immobilizing anti-penicillin G in a supported bilayer lipid membrane (s-BLM) modified with gold nanoparticles, and the modified electrodes were characterized by the scanning electron microscope (SEM), cyclic voltammetry and electrochemical impedance spectroscopy. The biosensor was able to detect penicillin G with a linear correlation ranging from 3.34×10(-3)ng/L to 3.34×10(3)ng/L and a detection limit of 2.7×10(-4)ng/L, much lower than the maximum residue limit (MRL) of penicillin G in milk (4ppb, equal to 4×10(3)ng/L) set out by the European Union. The mean coefficient variation (CV) of the intra-assays and the inter-assays were 5.4% and 7.7%, respectively. In addition, the concentration of penicillin G in milk samples determined by this biosensor was in good agreement with that determined by high performance liquid chromatography (HPLC) assay.
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Affiliation(s)
- Han Li
- Key Laboratory of Environment and Health, Ministry of Education & Ministry of Environmental Protection, and State Key Laboratory of Environmental Health (Incubating), School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, Hubei, China.
| | - Bing Xu
- Key Laboratory of Environment and Health, Ministry of Education & Ministry of Environmental Protection, and State Key Laboratory of Environmental Health (Incubating), School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, Hubei, China.
| | - Danqi Wang
- Key Laboratory of Environment and Health, Ministry of Education & Ministry of Environmental Protection, and State Key Laboratory of Environmental Health (Incubating), School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, Hubei, China.
| | - Yin Zhou
- College of Health Science and Nursing, Wuhan Polytechnic University, Wuhan 430023, Hubei, China.
| | - Hongling Zhang
- College of Health Science and Nursing, Wuhan Polytechnic University, Wuhan 430023, Hubei, China.
| | - Wei Xia
- Key Laboratory of Environment and Health, Ministry of Education & Ministry of Environmental Protection, and State Key Laboratory of Environmental Health (Incubating), School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, Hubei, China.
| | - Shunqing Xu
- Key Laboratory of Environment and Health, Ministry of Education & Ministry of Environmental Protection, and State Key Laboratory of Environmental Health (Incubating), School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, Hubei, China.
| | - Yuanyuan Li
- Key Laboratory of Environment and Health, Ministry of Education & Ministry of Environmental Protection, and State Key Laboratory of Environmental Health (Incubating), School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, Hubei, China.
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Fatoni A, Numnuam A, Kanatharana P, Limbut W, Thavarungkul P. A novel molecularly imprinted chitosan–acrylamide, graphene, ferrocene composite cryogel biosensor used to detect microalbumin. Analyst 2014; 139:6160-7. [DOI: 10.1039/c4an01000k] [Citation(s) in RCA: 54] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
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22
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Gopinath SC, Tang TH, Citartan M, Chen Y, Lakshmipriya T. Current aspects in immunosensors. Biosens Bioelectron 2014; 57:292-302. [DOI: 10.1016/j.bios.2014.02.029] [Citation(s) in RCA: 67] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2013] [Revised: 02/11/2014] [Accepted: 02/11/2014] [Indexed: 02/08/2023]
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23
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Wu Y, Tang L, Huang L, Han Z, Wang J, Pan H. A low detection limit penicillin biosensor based on single graphene nanosheets preadsorbed with hematein/ionic liquids/penicillinase. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2014; 39:92-9. [DOI: 10.1016/j.msec.2014.02.012] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/29/2013] [Revised: 01/21/2014] [Accepted: 02/08/2014] [Indexed: 10/25/2022]
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DU HL, FU XW, WEN YP, QIU ZJ, XIONG LM, HONG NZ, YANG YH. A Label-free Immunosensor for Microcystins-LR Based on Graphene and Gold Nanocage. CHINESE JOURNAL OF ANALYTICAL CHEMISTRY 2014. [DOI: 10.1016/s1872-2040(13)60730-6] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Lebogang L, Hedström M, Mattiasson B. Development of a real-time capacitive biosensor for cyclic cyanotoxic peptides based on Adda-specific antibodies. Anal Chim Acta 2014; 826:69-76. [PMID: 24793855 DOI: 10.1016/j.aca.2014.03.028] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2014] [Revised: 03/11/2014] [Accepted: 03/21/2014] [Indexed: 10/25/2022]
Abstract
The harmful effects of cyanotoxins in surface waters have led to increasing demands for accurate early warning methods. This study proposes a capacitive immunosensor for broad-spectrum detection of the group of toxic cyclic peptides called microcystins (∼80 congeners) at very low concentration levels. The novel analytical platform offers significant advances compared to the existing methods. Monoclonal antibodies (mAbs, clone AD4G2) that recognize a common element of microcystins were used to construct the biosensing layer. Initially, a stable insulating anchor layer for the mAbs was made by electropolymerization of tyramine onto a gold electrode surface, with subsequent incorporation of gold nanoparticles (AuNPs) on the glutaraldehyde (5%) activated polytyramine surface. The biosensor responded linearly to microcystin concentrations from 1×10(-13)M to 1×10(-10)M MC-LR standard with a limit of detection of 2.1×10(-14)M. The stability of the biosensor was evaluated by repeated measurements of the antigen and by determining the capacitance change relative to the original response, which decreased below 90% after the 30th cycle.
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Affiliation(s)
- Lesedi Lebogang
- Department of Biotechnology, Lund University, Box 124, 22100 Lund, Sweden
| | - Martin Hedström
- Department of Biotechnology, Lund University, Box 124, 22100 Lund, Sweden.
| | - Bo Mattiasson
- Department of Biotechnology, Lund University, Box 124, 22100 Lund, Sweden; CapSenze HB, Annersbergs gård 5520, 26021 Billeberga, Sweden
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26
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Chaiphet T, Bunkoed O, Thammakhet C, Thavarungkul P, Kanatharana P. A novel microextractor stick (polyaniline/zinc film/stainless steel) for polycyclic aromatic hydrocarbons in water. JOURNAL OF ENVIRONMENTAL SCIENCE AND HEALTH. PART A, TOXIC/HAZARDOUS SUBSTANCES & ENVIRONMENTAL ENGINEERING 2014; 49:882-891. [PMID: 24766589 DOI: 10.1080/10934529.2014.893791] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
A novel microextractor stick (MES) has been developed for the determination of trace amounts of polycyclic aromatic hydrocarbons (PAHs) in water samples. The proposed MES was prepared by electrodepositing a Zn-film onto a stainless steel stick followed by a coating with polyaniline (PANI) sorptive layers. This PANI/Zn-film/stainless steel stick produced a large surface area, provided a high extraction efficiency (82.0 ± 6.2% to 111.0 ± 7.5% recovery) of spiked chrysene (Chry) and benzo(a)pyrene (BaP). This MES is cost-effective, easy to prepare, robust and provides a good stick-to-stick reproducibility (n = 10) with a relative standard deviation of less than 10%. The effect of various parameters on the efficiency of extraction of PAHs were optimized, including the extraction time, extraction and desorption stirring speeds, volume of desorption solvent and desorption time. Under the optimum conditions, the limit of detection (S/N ≥ 3) and limit of quantification (S/N ≥ 10) of both Chry and BaP were 0.05 and 0.12 μg L(-1), respectively. The developed MES was successfully applied to determine PAHs in real water samples.
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Affiliation(s)
- Thitiphan Chaiphet
- a Trace Analysis and Biosensor Research Center , Prince of Songkla University , Hat Yai , Songkhla , Thailand
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27
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Immunoassays and biosensors for the detection of cyanobacterial toxins in water. SENSORS 2013; 13:15085-112. [PMID: 24196435 PMCID: PMC3871135 DOI: 10.3390/s131115085] [Citation(s) in RCA: 41] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/02/2013] [Revised: 10/11/2013] [Accepted: 10/14/2013] [Indexed: 12/16/2022]
Abstract
Algal blooms are a frequent phenomenon in nearly all kinds of fresh water. Global warming and eutrophication by waste water, air pollution and fertilizers seem to lead to an increased frequency of occurrence. Many cyanobacteria produce hazardous and quite persistent toxins, which can contaminate the respective water bodies. This may limit the use of the raw water for many purposes. The purification of the contaminated water might be quite costly, which makes a continuous and large scale treatment economically unfeasible in many cases. Due to the obvious risks of algal toxins, an online or mobile detection method would be highly desirable. Several biosensor systems have been presented in the literature for this purpose. In this review, their mode of operation, performance and general suitability for the intended purpose will be described and critically discussed. Finally, an outlook on current developments and future prospects will be given.
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28
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One-step porous gold fabricated electrode for electrochemical impedance spectroscopy immunosensor detection. Electrochim Acta 2013. [DOI: 10.1016/j.electacta.2013.08.012] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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29
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Double electrochemical covalent coupling method based on click chemistry and diazonium chemistry for the fabrication of sensitive amperometric immunosensor. Anal Chim Acta 2013; 792:28-34. [DOI: 10.1016/j.aca.2013.06.046] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2013] [Revised: 06/25/2013] [Accepted: 06/28/2013] [Indexed: 01/09/2023]
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30
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Shi HC, Song BD, Long F, Zhou XH, He M, Lv Q, Yang HY. Automated online optical biosensing system for continuous real-time determination of microcystin-LR with high sensitivity and specificity: early warning for cyanotoxin risk in drinking water sources. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2013; 47:4434-41. [PMID: 23514076 DOI: 10.1021/es305196f] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
Abstract
The accelerated eutrophication of surface water sources and climate change have led to an annual occurrence of cyanobacterial blooms in many drinking water resources. To minimize the health risks to the public, cyanotoxin detection methods that are rapid, sensitive, real time, and high frequency must be established. In this study, an innovative automated online optical biosensing system (AOBS) was developed for the rapid detection and early warning of microcystin-LR (MC-LR), one of the most toxic cyanotoxins and most frequently detected in environmental water. In this system, the capturing molecular MC-LR-ovalbumin (MC-LR-OVA) was covalently immobilized onto a biochip surface. By an indirect competitive detection mode, samples containing different concentrations of MC-LR were premixed with a certain concentration of fluorescence-labeled anti-MC-LR-mAb, which binds to MC-LR with high specificity. Then, the sample mixture was pumped onto the biochip surface, and a higher concentration of MC-LR led to less fluorescence-labeled antibody bound onto the biochip surface and thus to lower fluorescence signal. The quantification of MC-LR ranges from 0.2 to 4 μg/L, with a detection limit determined as 0.09 μg/L. The high specificity and selectivity of the sensor were evaluated in terms of its response to a number of potentially interfering cyanotoxins. Potential interference of the environmental sample matrix was assessed by spiked samples, and the recovery of MC-LR ranged from 90 to 120% with relative standard deviation values <8%. The immunoassay performance of the AOBS was validated with respect to that of conventional high-performance liquid chromatography, and the correlation between methods agreed well (R(2) = 0.9762). This system has successfully been applied to long-term, continuous determination and early warning for MC-LR in Lake Tai from June 2011 to May 2012. Thus, the AOBS paves the way for a vital routine online analysis that satisfies the high demand for ensuring the safety of drinking water sources. The AOBS can also serve as early warning system for accidental or intentional water pollution.
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Affiliation(s)
- Han-Chang Shi
- State Key Joint Laboratory of ESPC, School of Environment, Tsinghua University, Beijing, China.
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31
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Zhao H, Tian J, Quan X. A graphene and multienzyme functionalized carbon nanosphere-based electrochemical immunosensor for microcystin-LR detection. Colloids Surf B Biointerfaces 2013. [DOI: 10.1016/j.colsurfb.2012.10.010] [Citation(s) in RCA: 40] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
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32
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Reverté L, Garibo D, Flores C, Diogène J, Caixach J, Campàs M. Magnetic particle-based enzyme assays and immunoassays for microcystins: from colorimetric to electrochemical detection. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2013; 47:471-478. [PMID: 23214443 DOI: 10.1021/es304234n] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
In this work, magnetic particles (MPs) are used as supports for the immobilization of biorecognition molecules for the detection of microcystins (MCs). In one approach, a recombinant protein phosphatase 1 (PP1) has been conjugated to MPs via coordination chemistry, and MC-LR detection has been based on the inhibition of the enzyme activity. In the other approach, a monoclonal antibody (mAb) against MC-LR has been conjugated to protein G-coated MPs, and a direct competitive enzyme-linked immunoparticle assay (ELIPA) has been then performed. Conjugation of biomolecules to MPs has been first checked, and after optimization, MC detection has been performed. The colorimetric PPIA with PP1-MP and the best ELIPA strategy have provided limits of detection (LOD) of 7.4 and 3.9 μg/L of MC-LR, respectively. The electrochemical ELIPA has decreased the LOD to 0.4 μg/L, value below the guideline recommended by the World Health Organisation (WHO). The approaches have been applied to the analysis of a cyanobacterial culture and a natural bloom, and MC equivalent contents have been compared to those obtained by conventional assays and liquid chromatography-tandem mass spectrometry (LC-MS/MS). Results have demonstrated the viability of the use of MPs as biomolecule immobilization supports in biotechnological tools for MCs monitoring.
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Affiliation(s)
- Laia Reverté
- IRTA, Carretera de Poble Nou, km 5.5, 43540 Sant Carles de la Ràpita, Spain
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Samanman S, Kanatharana P, Asawatreratanakul P, Thavarungkul P. Characterization and application of self-assembled layer by layer gold nanoparticles for highly sensitive label-free capacitive immunosensing. Electrochim Acta 2012. [DOI: 10.1016/j.electacta.2012.07.016] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
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34
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Hu X, Mu L, Wen J, Zhou Q. Immobilized smart RNA on graphene oxide nanosheets to specifically recognize and adsorb trace peptide toxins in drinking water. JOURNAL OF HAZARDOUS MATERIALS 2012; 213-214:387-392. [PMID: 22366314 DOI: 10.1016/j.jhazmat.2012.02.012] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/24/2011] [Revised: 01/14/2012] [Accepted: 02/06/2012] [Indexed: 05/31/2023]
Abstract
The contaminations of peptide toxins in drinking water lead directly to sickness and even death in both humans and animals. A smart RNA as aptamer is covalently immobilized on graphene oxide to form a polydispersed and stable RNA-graphene oxide nanosheet. RNA-graphene oxide nanosheets can resist nuclease and natural organic matter, and specifically adsorb trace peptide toxin (microcystin-LR) in drinking water. The adsorption data fit the pseudo-second-order kinetics and the Langmuir isotherm model. The adsorption capacity of RNA-graphene oxide nanosheets decreases at extreme pH, temperature, ionic strength and natural organic matter, but it is suitable to adsorb trance pollutants in contaminated drinking water. Compared with other chemical and biological sorbents, RNA-graphene oxide nanosheets present specific and competitive adsorption, and are easily synthesized and regenerated. Aptamer (RNA) covalently immobilized on graphene oxide nanosheets is a potentially useful tool in recognizing, enriching and separating small molecules and biomacromolecules in the purification of contaminated water and the preparation of samples.
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Affiliation(s)
- Xiangang Hu
- Key Laboratory of Pollution Processes and Environmental Criteria (Ministry of Education), College of Environmental Science and Engineering, Nankai University, Tianjin 300071, China
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35
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Babington R, Matas S, Marco MP, Galve R. Current bioanalytical methods for detection of penicillins. Anal Bioanal Chem 2012; 403:1549-66. [DOI: 10.1007/s00216-012-5960-4] [Citation(s) in RCA: 49] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2011] [Revised: 03/09/2012] [Accepted: 03/19/2012] [Indexed: 12/01/2022]
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36
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Holford TR, Davis F, Higson SP. Recent trends in antibody based sensors. Biosens Bioelectron 2012; 34:12-24. [DOI: 10.1016/j.bios.2011.10.023] [Citation(s) in RCA: 203] [Impact Index Per Article: 16.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2011] [Revised: 10/06/2011] [Accepted: 10/13/2011] [Indexed: 12/29/2022]
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37
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Campàs M, Garibo D, Prieto-Simón B. Novel nanobiotechnological concepts in electrochemical biosensors for the analysis of toxins. Analyst 2012; 137:1055-67. [DOI: 10.1039/c2an15736e] [Citation(s) in RCA: 59] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
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