KFU. Card publication. Reactions of phenolic antioxidants with electrogenerated superoxide anion radical and their analytical application

KAZAN
FEDERAL UNIVERSITY

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REACTIONS OF PHENOLIC ANTIOXIDANTS WITH ELECTROGENERATED SUPEROXIDE ANION RADICAL AND THEIR ANALYTICAL APPLICATION

Form of presentation

Articles in international journals and collections

Year of publication

2015

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Authors, employees of KFU

Budnikov German Konstantinovich, author

Ziyatdinova Guzel Kamilevna, author

Authors, students KFU

Zakharova Svetlana Petrovna, author

Bibliographic description in the original language

Ziyatdinova G.K. Reactions of phenolic antioxidants with electrogenerated superoxide anion radical and their analytical application / G.K. Ziyatdinova, S.P. Zakharova, H.C. Budnikov //UCHENYE ZAPISKI KAZANSKOGO UNIVERSITETA-SERIYA ESTESTVENNYE NAUKI. - 2015. - V. 157. - No. 2. - P. 129-142.

Annotation

Parameters of oxygen electroreduction on glassy carbon electrode modified with multi-walled carbon nanotubes were found. Increase in the oxygen reduction currents and system reversibility was observed compared to unmodified electrode, which allows to use cyclic voltammetry for investigation of reactions of electrogenerated superoxide anion radical with antioxidants. It was revealed that phenolic antioxidants act as proton donors (i.e., as Brønsted acids) and their interaction with superoxide anion radical follows ECE mechanism. The rate constants were relatively similar, varied in the range of 6.8?104 ÷ 11.0?10(4) L/mol?s, and thereby reflected the slight influence of the structure of phenolic antioxidants, in particular the number and position of hydroxyl groups, as well as the steric effects of substituents.

Keywords

Voltammetry, chemically modified electrodes, superoxide anion radical, phenolic anti-oxidants, antioxidant capacity, medicinal herbs.

The name of the journal

UCHENYE ZAPISKI KAZANSKOGO UNIVERSITETA-SERIYA ESTESTVENNYE NAUKI

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

https://repository.kpfu.ru/eng/?p_id=174375&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	Zakharova Svetlana Petrovna	ru_RU
dc.date.accessioned	2015-01-01T00:00:00Z	ru_RU
dc.date.available	2015-01-01T00:00:00Z	ru_RU
dc.date.issued	2015	ru_RU
dc.identifier.citation	Ziyatdinova G.K. Reactions of phenolic antioxidants with electrogenerated superoxide anion radical and their analytical application / G.K. Ziyatdinova, S.P. Zakharova, H.C. Budnikov //UCHENYE ZAPISKI KAZANSKOGO UNIVERSITETA-SERIYA ESTESTVENNYE NAUKI. - 2015. - V. 157. - No. 2. - P. 129-142.	ru_RU
dc.identifier.uri	https://repository.kpfu.ru/eng/?p_id=174375&p_lang=2	ru_RU
dc.description.abstract	UCHENYE ZAPISKI KAZANSKOGO UNIVERSITETA-SERIYA ESTESTVENNYE NAUKI	ru_RU
dc.description.abstract	Parameters of oxygen electroreduction on glassy carbon electrode modified with multi-walled carbon nanotubes were found. Increase in the oxygen reduction currents and system reversibility was observed compared to unmodified electrode, which allows to use cyclic voltammetry for investigation of reactions of electrogenerated superoxide anion radical with antioxidants. It was revealed that phenolic antioxidants act as proton donors (i.e., as Brønsted acids) and their interaction with superoxide anion radical follows ECE mechanism. The rate constants were relatively similar, varied in the range of 6.8?104 ÷ 11.0?10(4) L/mol?s, and thereby reflected the slight influence of the structure of phenolic antioxidants, in particular the number and position of hydroxyl groups, as well as the steric effects of substituents.	ru_RU
dc.language.iso	ru	ru_RU
dc.subject	Voltammetry	ru_RU
dc.subject	chemically modified electrodes	ru_RU
dc.subject	superoxide anion radical	ru_RU
dc.subject	phenolic anti-oxidants	ru_RU
dc.subject	antioxidant capacity	ru_RU
dc.subject	medicinal herbs.	ru_RU
dc.title	Reactions of phenolic antioxidants with electrogenerated superoxide anion radical and their analytical application	ru_RU
dc.type	Articles in international journals and collections	ru_RU