KFU. Card publication. Novel approach for the voltammetric evaluation of antioxidant activity using DPPH[rad]-modified electrode

KAZAN
FEDERAL UNIVERSITY

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NOVEL APPROACH FOR THE VOLTAMMETRIC EVALUATION OF ANTIOXIDANT ACTIVITY USING DPPH[RAD]-MODIFIED ELECTRODE

Form of presentation

Articles in international journals and collections

Year of publication

2017

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Authors, employees of KFU

Budnikov German Konstantinovich, author

Ziyatdinova Guzel Kamilevna, author

Authors, students KFU

Snegureva Yuliya Vladimirovna, author

Bibliographic description in the original language

Ziyatdinova, G. Novel approach for the voltammetric evaluation of antioxidant activity using DPPH[rad]-modified electrode / G. Ziyatdinova, Yu. Snegureva, H. Budnikov // Electrochim. Acta. – 2017. – V. 247. – P. 97-106.

Annotation

The electrochemical behavior of 2,2-diphenyl-1-picrylhydrazyl (DPPH) immobilized on the electrode surface has been studied. Bare glassy carbon electrode (GCE) and modified with dispersions of CeO2 nanoparticles in water (CeO2-H2O/GCE) and cationic surfactant cetylpyridinium bromide medium (CeO2-CPB/GCE) has been investigated as a platform for the DPPH immobilization. The best voltammetric characteristics (peak potential separation of 70 mV, system reversibility with currents ratio of 0.98 and the highest peaks currents) have been observed on CeO2-CPB/GCE. The effect of CeO2 nanoparticles concentration has been evaluated. Scanning electron microscopy and electrochemical impedance spectroscopy have been applied for the electrode characterization. DPPH/CeO2-CPB/GCE has been used for the estimation of the antioxidants activity of natural phenolic antioxidants (quercetin, tannin, catechin and ferulic acid) expressed as the EC50 parameter.

Keywords

Voltammetry, chemically modified electrodes, DPPH, antioxidant activity, phytochemical analysis

The name of the journal

ELECTROCHIMICA ACTA

URL

https://www.scopus.com/inward/record.uri?eid=2-s2.0-85022050582&doi=10.1016%2fj.electacta.2017.06.155&partnerID=40&md5=fad3844f6911decd3cde1dba0b2b0d49

Please use this ID to quote from or refer to the card

https://repository.kpfu.ru/eng/?p_id=163949&p_lang=2

Full metadata record

Field DC	Value	Language
dc.contributor.author	Budnikov German Konstantinovich	ru_RU
dc.contributor.author	Ziyatdinova Guzel Kamilevna	ru_RU
dc.contributor.author	Snegureva Yuliya Vladimirovna	ru_RU
dc.date.accessioned	2017-01-01T00:00:00Z	ru_RU
dc.date.available	2017-01-01T00:00:00Z	ru_RU
dc.date.issued	2017	ru_RU
dc.identifier.citation	Ziyatdinova, G. Novel approach for the voltammetric evaluation of antioxidant activity using DPPH[rad]-modified electrode / G. Ziyatdinova, Yu. Snegureva, H. Budnikov // Electrochim. Acta. – 2017. – V. 247. – P. 97-106.	ru_RU
dc.identifier.uri	https://repository.kpfu.ru/eng/?p_id=163949&p_lang=2	ru_RU
dc.description.abstract	ELECTROCHIMICA ACTA	ru_RU
dc.description.abstract	The electrochemical behavior of 2,2-diphenyl-1-picrylhydrazyl (DPPH) immobilized on the electrode surface has been studied. Bare glassy carbon electrode (GCE) and modified with dispersions of CeO2 nanoparticles in water (CeO2-H2O/GCE) and cationic surfactant cetylpyridinium bromide medium (CeO2-CPB/GCE) has been investigated as a platform for the DPPH immobilization. The best voltammetric characteristics (peak potential separation of 70 mV, system reversibility with currents ratio of 0.98 and the highest peaks currents) have been observed on CeO2-CPB/GCE. The effect of CeO2 nanoparticles concentration has been evaluated. Scanning electron microscopy and electrochemical impedance spectroscopy have been applied for the electrode characterization. DPPH/CeO2-CPB/GCE has been used for the estimation of the antioxidants activity of natural phenolic antioxidants (quercetin, tannin, catechin and ferulic acid) expressed as the EC50 parameter.	ru_RU
dc.language.iso	ru	ru_RU
dc.subject	Voltammetry	ru_RU
dc.subject	chemically modified electrodes	ru_RU
dc.subject	DPPH	ru_RU
dc.subject	antioxidant activity	ru_RU
dc.subject	phytochemical analysis	ru_RU
dc.title	Novel approach for the voltammetric evaluation of antioxidant activity using DPPH[rad]-modified electrode	ru_RU
dc.type	Articles in international journals and collections	ru_RU