The electrochemical redox mechanism and antioxidant activity of polyphenolic compounds based on inlaid multi-walled carbon nanotubes-modified graphite electrode

The electrochemical redox mechanism of polyphenolic compounds (gallic acid [GA], caffeic acid [CA], ferulic acid [FA], and vanillic acid [VA]) were investigated by electrochemical methods at the inlaid multi-walled carbon nanotubes-modified graphite electrode (MWCNTs/GCE). The obtained micro-informa...

Descripción completa

Guardado en:

Detalles Bibliográficos
Autores principales:	Li Xiaofen, Gao Yuntao, Xiong Huabin, Yang Zhi
Formato:	article
Lenguaje:	EN
Publicado:	De Gruyter 2021
Materias:	antioxidant activity polyphenolic compounds cyclic voltammetry differential pulse voltammetry Chemistry QD1-999
Acceso en línea:	https://doaj.org/article/fddc245202ad46b1866694bc39f0fb77
Etiquetas:	Agregar Etiqueta Sin Etiquetas, Sea el primero en etiquetar este registro!

id	oai:doaj.org-article:fddc245202ad46b1866694bc39f0fb77
record_format	dspace
spelling	oai:doaj.org-article:fddc245202ad46b1866694bc39f0fb772021-12-05T14:10:44ZThe electrochemical redox mechanism and antioxidant activity of polyphenolic compounds based on inlaid multi-walled carbon nanotubes-modified graphite electrode2391-542010.1515/chem-2021-0087https://doaj.org/article/fddc245202ad46b1866694bc39f0fb772021-09-01T00:00:00Zhttps://doi.org/10.1515/chem-2021-0087https://doaj.org/toc/2391-5420The electrochemical redox mechanism of polyphenolic compounds (gallic acid [GA], caffeic acid [CA], ferulic acid [FA], and vanillic acid [VA]) were investigated by electrochemical methods at the inlaid multi-walled carbon nanotubes-modified graphite electrode (MWCNTs/GCE). The obtained micro-information such as the number of electrons and protons were used to deduce the electrochemical oxidation mechanism of four polyphenolic compounds. The antioxidation activities of these compounds were also studied by two methods. The radical scavenging activity followed the order: GA > CA > FA > VA, which was in agreement with the result from the spectrophotometry method. The result indicated that compounds with lower oxidation peak potential (E pa) showed stronger antioxidation activity. At the same time, compounds with high E pa showed lower antioxidant activity. The greater the number of hydroxyls linked to the aromatic ring, the greater the antioxidation activities of four compounds. Structural analysis of these phenolic-based compounds suggested that multiple OH substitutions and conjugations determine their free radical scavenging activity and electrochemical behavior.Li XiaofenGao YuntaoXiong HuabinYang ZhiDe Gruyterarticleantioxidant activitypolyphenolic compoundscyclic voltammetrydifferential pulse voltammetryChemistryQD1-999ENOpen Chemistry, Vol 19, Iss 1, Pp 961-973 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	antioxidant activity polyphenolic compounds cyclic voltammetry differential pulse voltammetry Chemistry QD1-999
spellingShingle	antioxidant activity polyphenolic compounds cyclic voltammetry differential pulse voltammetry Chemistry QD1-999 Li Xiaofen Gao Yuntao Xiong Huabin Yang Zhi The electrochemical redox mechanism and antioxidant activity of polyphenolic compounds based on inlaid multi-walled carbon nanotubes-modified graphite electrode
description	The electrochemical redox mechanism of polyphenolic compounds (gallic acid [GA], caffeic acid [CA], ferulic acid [FA], and vanillic acid [VA]) were investigated by electrochemical methods at the inlaid multi-walled carbon nanotubes-modified graphite electrode (MWCNTs/GCE). The obtained micro-information such as the number of electrons and protons were used to deduce the electrochemical oxidation mechanism of four polyphenolic compounds. The antioxidation activities of these compounds were also studied by two methods. The radical scavenging activity followed the order: GA > CA > FA > VA, which was in agreement with the result from the spectrophotometry method. The result indicated that compounds with lower oxidation peak potential (E pa) showed stronger antioxidation activity. At the same time, compounds with high E pa showed lower antioxidant activity. The greater the number of hydroxyls linked to the aromatic ring, the greater the antioxidation activities of four compounds. Structural analysis of these phenolic-based compounds suggested that multiple OH substitutions and conjugations determine their free radical scavenging activity and electrochemical behavior.
format	article
author	Li Xiaofen Gao Yuntao Xiong Huabin Yang Zhi
author_facet	Li Xiaofen Gao Yuntao Xiong Huabin Yang Zhi
author_sort	Li Xiaofen
title	The electrochemical redox mechanism and antioxidant activity of polyphenolic compounds based on inlaid multi-walled carbon nanotubes-modified graphite electrode
title_short	The electrochemical redox mechanism and antioxidant activity of polyphenolic compounds based on inlaid multi-walled carbon nanotubes-modified graphite electrode
title_full	The electrochemical redox mechanism and antioxidant activity of polyphenolic compounds based on inlaid multi-walled carbon nanotubes-modified graphite electrode
title_fullStr	The electrochemical redox mechanism and antioxidant activity of polyphenolic compounds based on inlaid multi-walled carbon nanotubes-modified graphite electrode
title_full_unstemmed	The electrochemical redox mechanism and antioxidant activity of polyphenolic compounds based on inlaid multi-walled carbon nanotubes-modified graphite electrode
title_sort	electrochemical redox mechanism and antioxidant activity of polyphenolic compounds based on inlaid multi-walled carbon nanotubes-modified graphite electrode
publisher	De Gruyter
publishDate	2021
url	https://doaj.org/article/fddc245202ad46b1866694bc39f0fb77
work_keys_str_mv	AT lixiaofen theelectrochemicalredoxmechanismandantioxidantactivityofpolyphenoliccompoundsbasedoninlaidmultiwalledcarbonnanotubesmodifiedgraphiteelectrode AT gaoyuntao theelectrochemicalredoxmechanismandantioxidantactivityofpolyphenoliccompoundsbasedoninlaidmultiwalledcarbonnanotubesmodifiedgraphiteelectrode AT xionghuabin theelectrochemicalredoxmechanismandantioxidantactivityofpolyphenoliccompoundsbasedoninlaidmultiwalledcarbonnanotubesmodifiedgraphiteelectrode AT yangzhi theelectrochemicalredoxmechanismandantioxidantactivityofpolyphenoliccompoundsbasedoninlaidmultiwalledcarbonnanotubesmodifiedgraphiteelectrode AT lixiaofen electrochemicalredoxmechanismandantioxidantactivityofpolyphenoliccompoundsbasedoninlaidmultiwalledcarbonnanotubesmodifiedgraphiteelectrode AT gaoyuntao electrochemicalredoxmechanismandantioxidantactivityofpolyphenoliccompoundsbasedoninlaidmultiwalledcarbonnanotubesmodifiedgraphiteelectrode AT xionghuabin electrochemicalredoxmechanismandantioxidantactivityofpolyphenoliccompoundsbasedoninlaidmultiwalledcarbonnanotubesmodifiedgraphiteelectrode AT yangzhi electrochemicalredoxmechanismandantioxidantactivityofpolyphenoliccompoundsbasedoninlaidmultiwalledcarbonnanotubesmodifiedgraphiteelectrode
_version_	1718371818083975168

The electrochemical redox mechanism and antioxidant activity of polyphenolic compounds based on inlaid multi-walled carbon nanotubes-modified graphite electrode

Ejemplares similares