Electrochemical investigations into host-guest interactions of a natural antioxidant compound with β-cyclodextrin

The electrochemical behavior of mangiferin (MGN), a natural antioxidant compound, is examined using cyclic and differential pulse voltammetry in a protic medium on a glassy carbon electrode. The voltammograms exhibit a single irreversible pH-dependent anodic wave with current controlled by adsorptio...

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Autores principales: Ferreira, F.D.R., Da Silva, E.G., De Leo, L.P.M., Calvo, E.J., Bento, E.D.S., Goulart, M.O.F., De Abreu, F.C.
Formato: JOUR
Materias:
β-Cyclodextrin
Apparent formation constant
Carbon-nanotube modified electrodes
Mangiferin
PM IRRAS
Anodic waves
Association constant
Benesi-Hildebrand
Cd complex
Current-controlled
Differential pulse voltammetry
Direct method
Electrochemical behaviors
Electrochemical experiments
Electrochemical investigations
ELectrochemical methods
Formation constants
Glassy carbon electrodes
Gold electrodes
Host guest interactions
Langmuir isotherm
Lower detection limit
Modified electrodes
Natural antioxidants
PH-dependent
PM-IRRAS
UV-vis spectroscopy
Voltammograms
Adsorption
Carbon nanotubes
Complexation
Drug interactions
Electrodes
Glass membrane electrodes
Glassy carbon
Gold compounds
Self assembled monolayers
Ultraviolet spectroscopy
Cyclic voltammetry
Acceso en línea:http://hdl.handle.net/20.500.12110/paper_00134686_v56_n2_p797_Ferreira
Aporte de:
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
id todo:paper_00134686_v56_n2_p797_Ferreira
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spelling todo:paper_00134686_v56_n2_p797_Ferreira2023-10-03T14:11:03Z Electrochemical investigations into host-guest interactions of a natural antioxidant compound with β-cyclodextrin Ferreira, F.D.R. Da Silva, E.G. De Leo, L.P.M. Calvo, E.J. Bento, E.D.S. Goulart, M.O.F. De Abreu, F.C. β-Cyclodextrin Apparent formation constant Carbon-nanotube modified electrodes Mangiferin PM IRRAS Anodic waves Association constant Benesi-Hildebrand Cd complex Current-controlled Differential pulse voltammetry Direct method Electrochemical behaviors Electrochemical experiments Electrochemical investigations ELectrochemical methods Formation constants Glassy carbon electrodes Gold electrodes Host guest interactions Langmuir isotherm Lower detection limit Mangiferin Modified electrodes Natural antioxidants PH-dependent PM-IRRAS UV-vis spectroscopy Voltammograms Adsorption Carbon nanotubes Complexation Drug interactions Electrodes Glass membrane electrodes Glassy carbon Gold compounds Self assembled monolayers Ultraviolet spectroscopy Cyclic voltammetry The electrochemical behavior of mangiferin (MGN), a natural antioxidant compound, is examined using cyclic and differential pulse voltammetry in a protic medium on a glassy carbon electrode. The voltammograms exhibit a single irreversible pH-dependent anodic wave with current controlled by adsorption. Complexes of MGN with β-cyclodextrin (β-CD) were prepared and their formation was confirmed by UV-vis spectroscopy and electrochemical experiments, using a self-assembled monolayer of cyclodextrin on a gold electrode. The association constant of MGN:β-CD complexes was estimated by the Benesi-Hildebrand method, based on the spectrophotometric quantification of free β-CD and by the direct method using cyclic voltammetry and the Langmuir isotherm. PM IRRAS experiments corroborated the inclusion process based on the observation of the corresponding peaks in the spectra of the samples. MGN was quantified using a simple electrochemical method based on a β-CD incorporated carbon nanotube (CNT)-modified electrode (β-CDCNT). The presence of β-CD led to a 10-fold lower detection limit than that obtained with a CNT-modified electrode. © 2010 Elsevier Ltd. All rights reserved. JOUR info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar http://hdl.handle.net/20.500.12110/paper_00134686_v56_n2_p797_Ferreira
institution Universidad de Buenos Aires
institution_str I-28
repository_str R-134
collection Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic β-Cyclodextrin
Apparent formation constant
Carbon-nanotube modified electrodes
Mangiferin
PM IRRAS
Anodic waves
Association constant
Benesi-Hildebrand
Cd complex
Current-controlled
Differential pulse voltammetry
Direct method
Electrochemical behaviors
Electrochemical experiments
Electrochemical investigations
ELectrochemical methods
Formation constants
Glassy carbon electrodes
Gold electrodes
Host guest interactions
Langmuir isotherm
Lower detection limit
Mangiferin
Modified electrodes
Natural antioxidants
PH-dependent
PM-IRRAS
UV-vis spectroscopy
Voltammograms
Adsorption
Carbon nanotubes
Complexation
Drug interactions
Electrodes
Glass membrane electrodes
Glassy carbon
Gold compounds
Self assembled monolayers
Ultraviolet spectroscopy
Cyclic voltammetry
spellingShingle β-Cyclodextrin
Apparent formation constant
Carbon-nanotube modified electrodes
Mangiferin
PM IRRAS
Anodic waves
Association constant
Benesi-Hildebrand
Cd complex
Current-controlled
Differential pulse voltammetry
Direct method
Electrochemical behaviors
Electrochemical experiments
Electrochemical investigations
ELectrochemical methods
Formation constants
Glassy carbon electrodes
Gold electrodes
Host guest interactions
Langmuir isotherm
Lower detection limit
Mangiferin
Modified electrodes
Natural antioxidants
PH-dependent
PM-IRRAS
UV-vis spectroscopy
Voltammograms
Adsorption
Carbon nanotubes
Complexation
Drug interactions
Electrodes
Glass membrane electrodes
Glassy carbon
Gold compounds
Self assembled monolayers
Ultraviolet spectroscopy
Cyclic voltammetry
Ferreira, F.D.R.
Da Silva, E.G.
De Leo, L.P.M.
Calvo, E.J.
Bento, E.D.S.
Goulart, M.O.F.
De Abreu, F.C.
Electrochemical investigations into host-guest interactions of a natural antioxidant compound with β-cyclodextrin
topic_facet β-Cyclodextrin
Apparent formation constant
Carbon-nanotube modified electrodes
Mangiferin
PM IRRAS
Anodic waves
Association constant
Benesi-Hildebrand
Cd complex
Current-controlled
Differential pulse voltammetry
Direct method
Electrochemical behaviors
Electrochemical experiments
Electrochemical investigations
ELectrochemical methods
Formation constants
Glassy carbon electrodes
Gold electrodes
Host guest interactions
Langmuir isotherm
Lower detection limit
Mangiferin
Modified electrodes
Natural antioxidants
PH-dependent
PM-IRRAS
UV-vis spectroscopy
Voltammograms
Adsorption
Carbon nanotubes
Complexation
Drug interactions
Electrodes
Glass membrane electrodes
Glassy carbon
Gold compounds
Self assembled monolayers
Ultraviolet spectroscopy
Cyclic voltammetry
description The electrochemical behavior of mangiferin (MGN), a natural antioxidant compound, is examined using cyclic and differential pulse voltammetry in a protic medium on a glassy carbon electrode. The voltammograms exhibit a single irreversible pH-dependent anodic wave with current controlled by adsorption. Complexes of MGN with β-cyclodextrin (β-CD) were prepared and their formation was confirmed by UV-vis spectroscopy and electrochemical experiments, using a self-assembled monolayer of cyclodextrin on a gold electrode. The association constant of MGN:β-CD complexes was estimated by the Benesi-Hildebrand method, based on the spectrophotometric quantification of free β-CD and by the direct method using cyclic voltammetry and the Langmuir isotherm. PM IRRAS experiments corroborated the inclusion process based on the observation of the corresponding peaks in the spectra of the samples. MGN was quantified using a simple electrochemical method based on a β-CD incorporated carbon nanotube (CNT)-modified electrode (β-CDCNT). The presence of β-CD led to a 10-fold lower detection limit than that obtained with a CNT-modified electrode. © 2010 Elsevier Ltd. All rights reserved.
format JOUR
author Ferreira, F.D.R.
Da Silva, E.G.
De Leo, L.P.M.
Calvo, E.J.
Bento, E.D.S.
Goulart, M.O.F.
De Abreu, F.C.
author_facet Ferreira, F.D.R.
Da Silva, E.G.
De Leo, L.P.M.
Calvo, E.J.
Bento, E.D.S.
Goulart, M.O.F.
De Abreu, F.C.
author_sort Ferreira, F.D.R.
title Electrochemical investigations into host-guest interactions of a natural antioxidant compound with β-cyclodextrin
title_short Electrochemical investigations into host-guest interactions of a natural antioxidant compound with β-cyclodextrin
title_full Electrochemical investigations into host-guest interactions of a natural antioxidant compound with β-cyclodextrin
title_fullStr Electrochemical investigations into host-guest interactions of a natural antioxidant compound with β-cyclodextrin
title_full_unstemmed Electrochemical investigations into host-guest interactions of a natural antioxidant compound with β-cyclodextrin
title_sort electrochemical investigations into host-guest interactions of a natural antioxidant compound with β-cyclodextrin
url http://hdl.handle.net/20.500.12110/paper_00134686_v56_n2_p797_Ferreira
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