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Moodley C, Muller A, Belay YH. Prop-2-ynyl 3-meth-oxy-4-(prop-2-yn-yloxy)benzoate. IUCRDATA 2024; 9:x240163. [PMID: 38455112 PMCID: PMC10915548 DOI: 10.1107/s2414314624001639] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2024] [Accepted: 02/19/2024] [Indexed: 03/09/2024] Open
Abstract
The title compound, C14H12O4, comprises of two crystallographically independent mol-ecules in the asymmetric unit, linked via C-H⋯O inter-actions to form dimeric entities. The allylic groups are twisted out of the phenyl planes with dihedral angles varying between 7.92 (13) and 25.42 (8)°. In the crystal, the packing follows a zigzag pattern along the c-axis direction. The absolute configuration of the sample could not be determined reliably.
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Affiliation(s)
- Cresten Moodley
- Synthesis and Catalysis Research Centre, Department of Chemical Sciences, University of Johannesburg (APK Campus), PO Box 524, Auckland Park, Johannesburg, 2006, South Africa
| | - Alfred Muller
- Synthesis and Catalysis Research Centre, Department of Chemical Sciences, University of Johannesburg (APK Campus), PO Box 524, Auckland Park, Johannesburg, 2006, South Africa
| | - Yonas H. Belay
- Synthesis and Catalysis Research Centre, Department of Chemical Sciences, University of Johannesburg (APK Campus), PO Box 524, Auckland Park, Johannesburg, 2006, South Africa
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2
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Kumara JKS, Swamy BEK, Jayaprakash GK, Sharma SC, Flores.-Moreno R, Mohanty K, Hariprasad SA. Effect of TX-100 pretreatment on carbon paste electrode for selective sensing of dopamine in presence of paracetamol. Sci Rep 2022; 12:20292. [PMID: 36434033 PMCID: PMC9700772 DOI: 10.1038/s41598-022-24387-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2021] [Accepted: 11/15/2022] [Indexed: 11/27/2022] Open
Abstract
Dopamine (DA) is one of the chief neurotransmitters present in the central nervous system of mammals. Therefore detection of DA in presence of various analytes like paracetamol has great importance. In the current work, we are proposing that Triton X-100 (TX-100) pretreated carbon paste electrode (CPE) can be useful to detect the DA selectively in presence of PA. After the pretreatment CPE can detect DA in presence of PA effectively. Cyclic voltammetry was employed to observe the amplified electron transfer reaction between the modified CPE and DA. To understand electron transfer regioselectivity at the TX-100 pretreated CPE, a dual descriptor was used. The prepared electrode showed satisfactory stability when kept under ambient conditions. The proposed approach also showed excellent analytical applicability to identify DA and PA in commercial formulations. The scope of the work is limited to detecting DA in presence of PA. We will consider the other interferes for future works.
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Affiliation(s)
- J. K. Shashi Kumara
- grid.440695.a0000 0004 0501 6546Department of P.G. Studies and Research in Industrial Chemistry, JnanaSahyadri, Kuvempu University, Shankaraghatta, Shivamogga, Karnataka 577451 India
| | - B. E. Kumara Swamy
- grid.440695.a0000 0004 0501 6546Department of P.G. Studies and Research in Industrial Chemistry, JnanaSahyadri, Kuvempu University, Shankaraghatta, Shivamogga, Karnataka 577451 India
| | - G. K. Jayaprakash
- grid.444321.40000 0004 0501 2828Department of Chemistry, Nitte Meenakshi Institute of Technology, Bangalore, Karnataka 560064 India
| | - S. C. Sharma
- grid.449351.e0000 0004 1769 1282National Assessment and Accreditation Council (Work Carried Out As Honorary Professor), Jain University, Bangalore, Karnataka 560 069 India ,grid.417972.e0000 0001 1887 8311School of Energy Science and Engineering, Indian Institute of Technology Guwahati, Guwahati, 781039 India
| | - Roberto Flores.-Moreno
- grid.441421.60000 0004 0384 6642Departamento de Química, Centro Universitario de Ciencias Exactas e Ingenierías, Universidad Guadalajara, Blvd. Marcelino Garcı´a Barraga´N 1421, C.P. 44430 Guadalajara, Jal. Mexico
| | - Kaustubha Mohanty
- grid.417972.e0000 0001 1887 8311Department of Chemical Engineering, Indian lnstitute of Technology Guwahati, Guwahati, 781039 India
| | - S. A. Hariprasad
- grid.449351.e0000 0004 1769 1282Jain University, Bangalore, Karnataka 560 069 India
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3
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Portable, Disposable, Biomimetic Electrochemical Sensors for Analyte Detection in a Single Drop of Whole Blood. CHEMOSENSORS 2022. [DOI: 10.3390/chemosensors10070263] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Abstract
Current diagnostics call for rapid, sensitive, and selective screening of physiologically important biomarkers. Point-of-care (POC) devices for the rapid, reliable, and easy acquisition of bioinformation at, or near the patient, offer opportunities for better healthcare management. Electrochemical biosensors with high sensitivity and ease of miniaturization are advantageous for such applications. We report a photolithographically micropatterned PEDOT:PSS and silk protein-based fully organic 3-electrode sensor (O3ES) for ultralow volume (single drop—10 µL) detection of analytes in whole blood. The O3ES produces reliable electrochemical signals in whole blood from a mouse model with minimal biofouling interference. The O3ES is demonstrated as a portable device for the simultaneous detection of dopamine, ascorbic acid and uric acid using voltammetry techniques. The O3ES displays excellent sensitivity towards each analyte in whole blood, and in the presence of each other. The water-based, ambient processing of the sensors allows the immobilization of enzymes in the organic working electrode. Amperometric detection of uric acid via uricase with high sensitivity in whole blood is demonstrated. Finally, the performance of the O3ES under enzymatic degradation is studied by monitoring sensitivity over an operating lifetime of ~14 days. This work demonstrates the realization of low-cost, disposable POC sensors capable of detecting blood metabolites using ultralow sample volumes.
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4
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Vaschetti VM, Viada BN, Tamborelli A, Eimer GA, Rivas GA, Dalmasso PR. Ultrasensitive multiwall carbon nanotube-mesoporous MCM-41 hybrid-based platform for the electrochemical detection of ascorbic acid. Analyst 2022; 147:2130-2140. [DOI: 10.1039/d2an00473a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
An ultrasensitive multiwall carbon nanotube-MCM-41 hybrid-based ascorbic acid sensor for electro-detection in real samples is proposed. The MWCNT–MCM-41 hybrid preparation via dispersion was optimized through an experimental design based on CCD/RSM.
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Affiliation(s)
- Virginia M. Vaschetti
- CIQA, CONICET, Departamento de Ingeniería Química, Facultad Regional Córdoba, Universidad Tecnológica Nacional, Maestro López esq. Cruz Roja Argentina, 5016 Córdoba, Argentina
- INFIQC, CONICET-UNC, Departamento de Fisicoquímica, Facultad de Ciencias Químicas, Universidad Nacional de Córdoba, Ciudad Universitaria, 5000 Córdoba, Argentina
| | - Benjamín N. Viada
- CIQA, CONICET, Departamento de Ingeniería Química, Facultad Regional Córdoba, Universidad Tecnológica Nacional, Maestro López esq. Cruz Roja Argentina, 5016 Córdoba, Argentina
| | - Alejandro Tamborelli
- CIQA, CONICET, Departamento de Ingeniería Química, Facultad Regional Córdoba, Universidad Tecnológica Nacional, Maestro López esq. Cruz Roja Argentina, 5016 Córdoba, Argentina
- INFIQC, CONICET-UNC, Departamento de Fisicoquímica, Facultad de Ciencias Químicas, Universidad Nacional de Córdoba, Ciudad Universitaria, 5000 Córdoba, Argentina
| | - Griselda A. Eimer
- CITeQ, CONICET-UTN, Facultad Regional Córdoba, Universidad Tecnológica Nacional, Maestro López esq. Cruz Roja Argentina, 5016 Córdoba, Argentina
| | - Gustavo A. Rivas
- INFIQC, CONICET-UNC, Departamento de Fisicoquímica, Facultad de Ciencias Químicas, Universidad Nacional de Córdoba, Ciudad Universitaria, 5000 Córdoba, Argentina
| | - Pablo R. Dalmasso
- CIQA, CONICET, Departamento de Ingeniería Química, Facultad Regional Córdoba, Universidad Tecnológica Nacional, Maestro López esq. Cruz Roja Argentina, 5016 Córdoba, Argentina
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5
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Electrochemical Sensors Based on the Electropolymerized Natural Phenolic Antioxidants and Their Analytical Application. SENSORS 2021; 21:s21248385. [PMID: 34960482 PMCID: PMC8707084 DOI: 10.3390/s21248385] [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: 11/17/2021] [Revised: 12/08/2021] [Accepted: 12/12/2021] [Indexed: 11/17/2022]
Abstract
The design and fabrication of novel electrochemical sensors with high analytical and operational characteristics are one of the sustainable trends in modern analytical chemistry. Polymeric film formation by the electropolymerization of suitable monomers is one of the methods of sensors fabrication. Among a wide range of the substances able to polymerize, the phenolic ones are of theoretical and practical interest. The attention is focused on the sensors based on the electropolymerized natural phenolic antioxidants and their analytical application. The typical electropolymerization reaction schemes are discussed. Phenol electropolymerization leads to insulating coverage formation. Therefore, a combination of electropolymerized natural phenolic antioxidants and carbon nanomaterials as modifiers is of special interest. Carbon nanomaterials provide conductivity and a high working surface area of the electrode, while the polymeric film properties affect the selectivity and sensitivity of the sensor response for the target analyte or the group of structurally related compounds. The possibility of guided changes in the electrochemical response for the improvement of target compounds' analytical characteristics has appeared. The analytical capabilities of sensors based on electropolymerized natural phenolic antioxidants and their future development in this field are discussed.
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Guler M, Kavak E, Kivrak A. Electrochemical Dopamine Sensor Based on Gold Nanoparticles Electrodeposited on a Polymer/Reduced Graphene Oxide-Modified Glassy Carbon Electrode. ANAL LETT 2021. [DOI: 10.1080/00032719.2021.1990310] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Affiliation(s)
- Muhammet Guler
- Faculty of Science, Department of Chemistry, Van Yüzüncü Yıl University, Van, Turkey
| | - Emrah Kavak
- Faculty of Science, Department of Chemistry, Van Yüzüncü Yıl University, Van, Turkey
| | - Arif Kivrak
- Faculty of Sciences and Arts, Department of Chemistry, Eskisehir Osmangazi University, Eskisehir, Turkey
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7
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Liu B, Xue Y, Gao Z, Tang K, Wang G, Chen Z, Zuo X. Antioxidant identification using a colorimetric sensor array based on Co-N-C nanozyme. Colloids Surf B Biointerfaces 2021; 208:112060. [PMID: 34450512 DOI: 10.1016/j.colsurfb.2021.112060] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2021] [Revised: 08/18/2021] [Accepted: 08/19/2021] [Indexed: 02/07/2023]
Abstract
Here we develop a simple and effective nose/tongue sensor array based on Co-N-C single-atom nanozymes-3,3',5,5'-tetramethylbenzidine (TMB)-H2O2 for colorimetric discrimination of antioxidants, which makes use of the color reaction of TMB oxidation by H2O2 in two different pH (3.8 and 4.6) environments under the catalysis of Co-N-C nanoenzyme with peroxidase-like activity. Different antioxidants have varying reducing ability to the oxidation products of TMB (oxTMB), thus resulting in differential absorbance and color changes. Linear discriminant analysis (LDA) results indicate that the sensor array successfully identified 7 antioxidants, i.e., glutathione (GSH), ascorbic acid (AA), cysteine (Cys), tannin (TA), Catechin (C), dopamine (DA), and uric acid (UA) in both buffer and even serum samples. Additionally, the performance of the sensor array was validated with antioxidant mixtures, individual antioxidants with different concentrations, and target antioxidants and interfering substances. In general, the versatile sensor array based on Co-N-C single-atom nanozymes provides an excellent strategy for identifying a variety of antioxidants, which exhibits a broad application prospect in medical diagnosis.
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Affiliation(s)
- Bin Liu
- College of Life Sciences, Capital Normal University, Beijing, 100048, China; Department of Chemistry, Capital Normal University, Beijing, 100048, China
| | - Yuting Xue
- Department of Chemistry, Capital Normal University, Beijing, 100048, China
| | - Zeyu Gao
- Department of Chemistry, Capital Normal University, Beijing, 100048, China
| | - Keru Tang
- Department of Chemistry, Capital Normal University, Beijing, 100048, China
| | - Guo Wang
- Department of Chemistry, Capital Normal University, Beijing, 100048, China
| | - Zhengbo Chen
- Department of Chemistry, Capital Normal University, Beijing, 100048, China.
| | - Xia Zuo
- Department of Chemistry, Capital Normal University, Beijing, 100048, China.
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8
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Poly (red DSBR)/Al-ZnO modified carbon paste electrode sensor for dopamine: a voltammetric study. Sci Rep 2021; 11:14310. [PMID: 34253794 PMCID: PMC8275598 DOI: 10.1038/s41598-021-93723-6] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2021] [Accepted: 06/15/2021] [Indexed: 11/29/2022] Open
Abstract
In the present work, the ZnO and Al-ZnO nanoflakes (NFs) were synthesized by the co-precipitation process. The synthesized NFs were characterized by X-ray diffraction and field emission scanning electron microscopy. Energy dispersive X-ray spectrometer was explored for the elemental chemical compositions. The prepared NFs were taken for the modification of the electrode and developed the modified electrode for the electrochemical analysis of the dopamine (DOA) at pH 7.4. The Al-ZnO modified carbon paste electrode (MCPE) was electropolymerised by using textile dye red DSBR. The Po-RD/Al-ZnO MCPE exhibited good electrochemical sensor properties towards the electrochemical detection of DOA. Several factors such as the impact of speed rate (υ), pH and concentration of the DOA were analyzed at the modified electrode. The great sensitivity was established to the fast electron-transfer kinetics and surface coverage of the DOA on the electrode. The prepared electrode exhibits satisfactory stability at the ambient conditions. The detection limit of 0.58 μM was achieved for the DOA. The decorated sensor was stable, sensitive, selective, and reproducible and used in the analytical applications.
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9
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Contardi M, Lenzuni M, Fiorentini F, Summa M, Bertorelli R, Suarato G, Athanassiou A. Hydroxycinnamic Acids and Derivatives Formulations for Skin Damages and Disorders: A Review. Pharmaceutics 2021; 13:999. [PMID: 34371691 PMCID: PMC8309026 DOI: 10.3390/pharmaceutics13070999] [Citation(s) in RCA: 23] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2021] [Revised: 06/25/2021] [Accepted: 06/26/2021] [Indexed: 02/06/2023] Open
Abstract
Alterations of skin homeostasis are widely diffused in our everyday life both due to accidental injuries, such as wounds and burns, and physiological conditions, such as late-stage diabetes, dermatitis, or psoriasis. These events are locally characterized by an intense inflammatory response, a high generation of harmful free radicals, or an impairment in the immune response regulation, which can profoundly change the skin tissue' repair process, vulnerability, and functionality. Moreover, diabetes diffusion, antibiotic resistance, and abuse of aggressive soaps and disinfectants following the COVID-19 emergency could be causes for the future spreading of skin disorders. In the last years, hydroxycinnamic acids and derivatives have been investigated and applied in several research fields for their anti-oxidant, anti-inflammatory, and anti-bacterial activities. First, in this study, we give an overview of these natural molecules' current source and applications. Afterwards, we review their potential role as valid alternatives to the current therapies, supporting the management and rebalancing of skin disorders and diseases at different levels. Also, we will introduce the recent advances in the design of biomaterials loaded with these phenolic compounds, specifically suitable for skin disorders treatments. Lastly, we will suggest future perspectives for introducing hydroxycinnamic acids and derivatives in treating skin disorders.
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Affiliation(s)
- Marco Contardi
- Smart Materials, Italian Institute of Technology, 16163 Genoa, Italy; (M.L.); (F.F.); (G.S.)
| | - Martina Lenzuni
- Smart Materials, Italian Institute of Technology, 16163 Genoa, Italy; (M.L.); (F.F.); (G.S.)
- DIBRIS, University of Genoa, 16145 Genoa, Italy
| | - Fabrizio Fiorentini
- Smart Materials, Italian Institute of Technology, 16163 Genoa, Italy; (M.L.); (F.F.); (G.S.)
- DIBRIS, University of Genoa, 16145 Genoa, Italy
| | - Maria Summa
- Translational Pharmacology, Italian Institute of Technology, 16163 Genoa, Italy; (M.S.); (R.B.)
| | - Rosalia Bertorelli
- Translational Pharmacology, Italian Institute of Technology, 16163 Genoa, Italy; (M.S.); (R.B.)
| | - Giulia Suarato
- Smart Materials, Italian Institute of Technology, 16163 Genoa, Italy; (M.L.); (F.F.); (G.S.)
- Translational Pharmacology, Italian Institute of Technology, 16163 Genoa, Italy; (M.S.); (R.B.)
| | - Athanassia Athanassiou
- Smart Materials, Italian Institute of Technology, 16163 Genoa, Italy; (M.L.); (F.F.); (G.S.)
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10
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Shashikumara JK, Kalaburgi B, Swamy BEK, Nagabhushana H, Sharma SC, Lalitha P. Effect of RGO-Y 2O 3 and RGO-Y 2O 3:Cr 3+ nanocomposite sensor for dopamine. Sci Rep 2021; 11:9372. [PMID: 33931659 PMCID: PMC8087706 DOI: 10.1038/s41598-021-87749-z] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2021] [Accepted: 03/30/2021] [Indexed: 11/29/2022] Open
Abstract
The RGO-Y2O3 and RGO-Y2O3: Cr3+ (5 mol %) nanocomposite (NC) synthesized by hydrothermal technique. The structure and morphology of the synthesized NCs were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), and transmission electron microscopy (TEM). Y2O3:Cr3+ displays spherical-shaped particles. Conversely, the surface of the RGO displays a wrinkly texture connecting with the existence of flexible and ultrathin graphene sheets. The photoluminescence (PL) emission spectra showed series of sharp peaks at 490, 591, and 687 nm which corresponding to 4F9/2 → 6H15/2, 4F9/2 → 6H13/2, and 4F9/2 → 6H11/2 transitions and lies in the blue, orange, and red region. The prepared NCs were used for the preparation of modified carbon paste electrodes (MCPE) in the electrochemical detection of dopamine (DA) at pH 7.4. Both modified electrodes provide a good current response towards voltammetric detection of DA. Doping is an effective method to improve the conductivity of Y2O3:Cr3+ and developed a method for the sensor used in analytical applications.
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Affiliation(s)
- J K Shashikumara
- Department of P.G. Studies and Research in Industrial Chemistry, Kuvempu University, Jnana Sahyadri, Shankaraghatta, Shimoga, Karnataka, 577451, India
| | - Bhimanagouda Kalaburgi
- Department of Studies and Research in Physics, Tumkur University, Tumkur, Karnataka, 572 103, India
| | - B E Kumara Swamy
- Department of P.G. Studies and Research in Industrial Chemistry, Kuvempu University, Jnana Sahyadri, Shankaraghatta, Shimoga, Karnataka, 577451, India.
| | - H Nagabhushana
- Department of Studies and Research in Physics, Tumkur University, Tumkur, Karnataka, 572 103, India.
| | - S C Sharma
- National Assessment and Accreditation Council (Work Carried Out as Honorary Professor), Jain University, Bangalore, Karnataka, 560 069, India. .,Distinguished Professor in the Centre for Energy, Indian Institute of Technology Guwahati, Guwahati, India.
| | - P Lalitha
- Department of Chemistry, Avinashilingam Institute for Home Science and Higher Education for Women, Coimbatore, Tamil Nadu, 641043, India
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Rajeev R, Datta R, Varghese A, Sudhakar Y, George L. Recent advances in bimetallic based nanostructures: Synthesis and electrochemical sensing applications. Microchem J 2021. [DOI: 10.1016/j.microc.2020.105910] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
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12
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da Silva LV, dos Santos ND, de Almeida AK, dos Santos DDE, Santos ACF, França MC, Lima DJP, Lima PR, Goulart MO. A new electrochemical sensor based on oxidized capsaicin/multi-walled carbon nanotubes/glassy carbon electrode for the quantification of dopamine, epinephrine, and xanthurenic, ascorbic and uric acids. J Electroanal Chem (Lausanne) 2021. [DOI: 10.1016/j.jelechem.2020.114919] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
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13
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Rees M, Wright AG, Holdcroft S, Bertoncello P. Voltammetry at Hexamethyl-P-Terphenyl Poly(Benzimidazolium) (HMT-PMBI)-Coated Glassy Carbon Electrodes: Charge Transport Properties and Detection of Uric and Ascorbic Acid. SENSORS (BASEL, SWITZERLAND) 2020; 20:E443. [PMID: 31941118 PMCID: PMC7013716 DOI: 10.3390/s20020443] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/24/2019] [Revised: 01/02/2020] [Accepted: 01/08/2020] [Indexed: 12/22/2022]
Abstract
We describe the voltammetric behavior of an anion-exchange membrane, hexamethyl-p-terphenyl poly(benzimidazolium) (HMT-PMBI). The anion-exchange properties of HMT-PMBI chemically modified electrodes were investigated using K4Fe(CN)6 and K2IrCl6 as redox probes. The permselectivity properties of HMT-PMBI chemically modified electrodes were ascertained using tris(2-2')bipyridyl-ruthenium(II) chloride Ru(bpy)32+. Cyclic voltammetry and chronoamperometry were utilized to extract parameters such as the concentration of the redox mediators inside the films and the apparent diffusion coefficients. We found the concentration of K4Fe(CN)6 and K2IrCl6 redox species within HMT-PMBI-coated films to be on the order of 0.04-0.1 mol·dm-3, and values of Dapp ca. 10-10-10-9 cm2·s-1. To evaluate the possibility of using such a polymer coating in electroanalysis, HMT-PMBI-modified electrodes were utilized for the voltammetric detection of uric acid in artificial urine, Surine® and ascorbic acid in Vitamin C samples. The results showed that HMT-PMBI-coated electrodes can detect uric acid in Surine® with a limit of detection (LoD) of 7.7 µM, sensitivity of 0.14 µA·µM-1·cm-2, and linear range between 5 μM and 200 μM, whereas for Vitamin C tablets, the LoD is 41.4 µM, the sensitivity is 0.08 µA·µM-1·cm-2, and the linear range is between 25 μM and 450 μM.
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Affiliation(s)
- Matthew Rees
- Systems and Process Engineering Centre, College of Engineering, Swansea University, Bay Campus, Crymlyn Burrows, Swansea SA1 8EN, UK;
| | - Andrew G. Wright
- Department of Chemistry, Simon Fraser University, Burnaby, BC V5A 1S6, Canada; (A.G.W.); (S.H.)
| | - Steven Holdcroft
- Department of Chemistry, Simon Fraser University, Burnaby, BC V5A 1S6, Canada; (A.G.W.); (S.H.)
| | - Paolo Bertoncello
- Systems and Process Engineering Centre, College of Engineering, Swansea University, Bay Campus, Crymlyn Burrows, Swansea SA1 8EN, UK;
- Centre for NanoHealth, Swansea University, Singleton Campus, Swansea SA2 8PP, UK
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14
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Fortunati S, Rozzi A, Curti F, Giannetto M, Corradini R, Careri M. Novel amperometric genosensor based on peptide nucleic acid (PNA) probes immobilized on carbon nanotubes-screen printed electrodes for the determination of trace levels of non-amplified DNA in genetically modified (GM) soy. Biosens Bioelectron 2019; 129:7-14. [PMID: 30682690 DOI: 10.1016/j.bios.2019.01.020] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2018] [Revised: 01/07/2019] [Accepted: 01/11/2019] [Indexed: 02/09/2023]
Abstract
A novel amperometric genosensor based on PNA probes covalently bound on the surface of Single Walled Carbon Nanotubes - Screen Printed Electrodes (SWCNT-SPEs) was developed and validated in samples of non-amplified genomic DNA extracted from genetically modified (GM)-Soy. The sandwich assay is based on a first recognition of a 20-mer portion of the target DNA by a complementary PNA Capture Probe (CP) and a second hybridization with a PNA Signalling Probe (SP), with a complementary sequence to a different portion of the target DNA. The SP was labelled with biotin to measure current signal by means of a final incubation of an Alkaline Phosphatase-streptavidin conjugate (ALP-Strp). The electrochemical detection was carried out using hydroquinone diphosphate (HQDP) as enzymatic substrate. The genoassay provided a linear range from 250 pM to 2.5 nM, LOD of 64 pM and LOQ of 215 pM Excellent selectivity towards one base mismatch (1-MM) or scrambled (SCR) sequences was obtained. A simple protocol for extraction and analysis of non-amplified soybean genomic DNA without sample treatment was developed and validated. Our study provides insight into how the outstanding recognition efficiency of PNAs can be combined with the unique properties of CNTs in terms of signal response enhancement for direct detection of genomic DNA samples at the level of interest without previous amplification.
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Affiliation(s)
- Simone Fortunati
- Dipartimento di Scienze Chimiche, della Vita e della Sostenibilità Ambientale, Università di Parma, Parco Area delle Scienze 17/A, 43124 Parma, Italy
| | - Andrea Rozzi
- Dipartimento di Scienze Chimiche, della Vita e della Sostenibilità Ambientale, Università di Parma, Parco Area delle Scienze 17/A, 43124 Parma, Italy
| | - Federica Curti
- Dipartimento di Scienze Chimiche, della Vita e della Sostenibilità Ambientale, Università di Parma, Parco Area delle Scienze 17/A, 43124 Parma, Italy
| | - Marco Giannetto
- Dipartimento di Scienze Chimiche, della Vita e della Sostenibilità Ambientale, Università di Parma, Parco Area delle Scienze 17/A, 43124 Parma, Italy.
| | - Roberto Corradini
- Dipartimento di Scienze Chimiche, della Vita e della Sostenibilità Ambientale, Università di Parma, Parco Area delle Scienze 17/A, 43124 Parma, Italy.
| | - Maria Careri
- Dipartimento di Scienze Chimiche, della Vita e della Sostenibilità Ambientale, Università di Parma, Parco Area delle Scienze 17/A, 43124 Parma, Italy
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Single-Walled Carbon Nanotubes as Enhancing Substrates for PNA-Based Amperometric Genosensors. SENSORS 2019; 19:s19030588. [PMID: 30704111 PMCID: PMC6387446 DOI: 10.3390/s19030588] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/03/2018] [Revised: 01/16/2019] [Accepted: 01/28/2019] [Indexed: 12/20/2022]
Abstract
A new amperometric sandwich-format genosensor has been implemented on single-walled carbon nanotubes screen printed electrodes (SWCNT-SPEs) and compared in terms of performance with analogous genoassays developed using the same methodology on non-nanostructured glassy carbon platforms (GC-SPE). The working principle of the genosensors is based on the covalent immobilization of Peptide Nucleic Acid (PNA) capture probes (CP) on the electrode surface, carried out through the carboxylic functions present on SWCNT-SPEs (carboxylated SWCNT) or electrochemically induced on GC-SPEs. The sequence of the CP was complementary to a 20-mer portion of the target DNA; a second biotin-tagged PNA signalling probe (SP), with sequence complementary to a different contiguous portion of the target DNA, was used to obtain a sandwich hybrid with an Alkaline Phosphatase-streptavidin conjugate (ALP-Strp). Comparison of the responses obtained from the SWCNT-SPEs with those produced from the non-nanostructured substrates evidenced the remarkable enhancement effect given by the nanostructured electrode platforms, achieved both in terms of loading capability of PNA probes and amplification of the electron transfer phenomena exploited for the signal transduction, giving rise to more than four-fold higher sensitivity when using SWCNT-SPEs. The nanostructured substrate allowed to reach limit of detection (LOD) of 71 pM and limit of quantitation (LOQ) of 256 pM, while the corresponding values obtained with GC-SPEs were 430 pM and 1.43 nM, respectively.
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da Silva LV, de Almeida AK, Xavier JA, Lopes CB, Silva FDADS, Lima PR, dos Santos ND, Kubota LT, Goulart MO. Phenol based redox mediators in electroanalysis. J Electroanal Chem (Lausanne) 2018. [DOI: 10.1016/j.jelechem.2018.05.027] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
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Baig N, Rana A, Kawde AN. Modified Electrodes for Selective Voltammetric Detection of Biomolecules. ELECTROANAL 2018. [DOI: 10.1002/elan.201800468] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Affiliation(s)
- Nadeem Baig
- Chemistry Department, College of Sciences; King Fahd University of Petroleum and Minerals; Dhahran 31261 Saudi Arabia
| | - Azeem Rana
- Chemistry Department, College of Sciences; King Fahd University of Petroleum and Minerals; Dhahran 31261 Saudi Arabia
| | - Abdel-Nasser Kawde
- Chemistry Department, College of Sciences; King Fahd University of Petroleum and Minerals; Dhahran 31261 Saudi Arabia
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Abellán-Llobregat A, Vidal L, Rodríguez-Amaro R, Canals A, Morallón E. Evaluation of herringbone carbon nanotubes-modified electrodes for the simultaneous determination of ascorbic acid and uric acid. Electrochim Acta 2018. [DOI: 10.1016/j.electacta.2018.08.007] [Citation(s) in RCA: 33] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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19
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Doulache M, Trari M, Saidat B. Bimetallic CoPt nanoparticles-modified Pt disk electrode for the amperometric sensing of ascorbic acid. J CHEM SCI 2018. [DOI: 10.1007/s12039-018-1513-5] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
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Abellán-Llobregat A, González-Gaitán C, Vidal L, Canals A, Morallón E. Portable electrochemical sensor based on 4-aminobenzoic acid-functionalized herringbone carbon nanotubes for the determination of ascorbic acid and uric acid in human fluids. Biosens Bioelectron 2018; 109:123-131. [DOI: 10.1016/j.bios.2018.02.047] [Citation(s) in RCA: 43] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2017] [Revised: 02/13/2018] [Accepted: 02/20/2018] [Indexed: 02/07/2023]
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Mekassa B, Tessema M, Chandravanshi BS. Simultaneous determination of caffeine and theophylline using square wave voltammetry at poly( l -aspartic acid)/functionalized multi-walled carbon nanotubes composite modified electrode. SENSING AND BIO-SENSING RESEARCH 2017. [DOI: 10.1016/j.sbsr.2017.11.002] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
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Giannetto M, Bianchi MV, Mattarozzi M, Careri M. Competitive amperometric immunosensor for determination of p53 protein in urine with carbon nanotubes/gold nanoparticles screen-printed electrodes: A potential rapid and noninvasive screening tool for early diagnosis of urinary tract carcinoma. Anal Chim Acta 2017; 991:133-141. [PMID: 29031295 DOI: 10.1016/j.aca.2017.09.005] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2017] [Revised: 08/10/2017] [Accepted: 09/06/2017] [Indexed: 01/10/2023]
Abstract
Since p53 protein has become recognized biomarker for both diagnostic and therapeutic purposes in oncological diseases with particular relevance for bladder cancer, it is highly desirable to search for a novel sensing tool for detecting the patient's p53 level at the early stage. Here we report the first study on the development and validation of a novel disposable competitive amperometric immunosensor for determination of p53 protein at subnanomolar levels, based on p53 immobilization on gold nanoparticles/carbon nanotubes modified screen-printed carbon electrodes. The assay protocol requires the use of single anti-p53 mouse monoclonal antibody (DO-7 clone), able to recognize both wild-type and mutant p53. The developed immunosensor as well as the protocol of the electrochemical immunoassay were optimized by means of an experimental design procedure to assess the suitability of the device to be validated and applied for the determination of p53 in untreated and undiluted urine samples. It was found that the developed competitive immunodevice was able to achieve wide linear range detection of wild-type p53 from 20 pM to 10 nM with a low detection limit of 14 pM in synthetic urine samples, suggesting the sensor's capability of working in a complex sample matrix. The excellent performance results also in terms of selectivity, trueness and precision, coupled with the advantages of an easy preparation and low-cost assay in contrast to other methods which require very complex, time-consuming and costly nanostructured architectures, makes the developed competitive immunosensor an analytically robust diagnostic tool, valuable for implementation of screening and follow-up programs in patients with urologic malignancies.
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Affiliation(s)
- Marco Giannetto
- Dipartimento di Scienze Chimiche, della Vita e della Sostenibilità Ambientale, Università di Parma, Parco Area delle Scienze 17/A, 43124 Parma, Italy.
| | - Maria Vittoria Bianchi
- Dipartimento di Scienze Chimiche, della Vita e della Sostenibilità Ambientale, Università di Parma, Parco Area delle Scienze 17/A, 43124 Parma, Italy
| | - Monica Mattarozzi
- Dipartimento di Scienze Chimiche, della Vita e della Sostenibilità Ambientale, Università di Parma, Parco Area delle Scienze 17/A, 43124 Parma, Italy
| | - Maria Careri
- Dipartimento di Scienze Chimiche, della Vita e della Sostenibilità Ambientale, Università di Parma, Parco Area delle Scienze 17/A, 43124 Parma, Italy
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da Silva LV, Lopes CB, da Silva WC, de Paiva YG, Silva FDADS, Lima PR, Kubota LT, Goulart MOF. Electropolymerization of ferulic acid on multi-walled carbon nanotubes modified glassy carbon electrode as a versatile platform for NADH, dopamine and epinephrine separate detection. Microchem J 2017. [DOI: 10.1016/j.microc.2017.04.014] [Citation(s) in RCA: 49] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
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