KFU. Card publication. Differential Pulse Voltammetric Assay of Coffee Antioxidant Capacity with MWNT-Modified Electrode

KAZAN
FEDERAL UNIVERSITY

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DIFFERENTIAL PULSE VOLTAMMETRIC ASSAY OF COFFEE ANTIOXIDANT CAPACITY WITH MWNT-MODIFIED ELECTRODE

Form of presentation

Articles in international journals and collections

Year of publication

2013

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Authors, employees of KFU

Budnikov German Konstantinovich, author

Ziyatdinova Guzel Kamilevna, author

Authors, postgraduates KFU

Nizamova Alfiya Maratovna, postgraduate kfu

Authors, students KFU

Aytuganova Ilmira Ilnurovna, author

Bibliographic description in the original language

Ziyatdinova, G. Differential pulse voltammetric assay of coffee antioxidant capacity with MWNT-modified electrode / G. Ziyatdinova, I. Aytuganova, A. Nizamova, H. Budnikov // Food Anal. Meth. - 2013. - V. 6. - No. 6. - P. 1629-1638.

Annotation

Multi-walled carbon nanotube-modified glassy carbon electrode (GCE) has shown electrocatalytic activity toward electrochemical oxidation of hydroxycinnamic acids (chlorogenic, caffeic, p-coumaric and ferulic), i.e. decrease of the overpotential on 0.1?0.29 V and two- to threefold increase of oxidation currents in comparison with bare GCE under conditions of cyclic voltammetry. Oxidation of compounds under investigation is a diffusion-controlled process. The differential pulse voltammetry has been applied for the hydroxycinnamic acid quantification. The calibration graphs linearity is continued in 2?5.5 order of concentrations. The approach developed has been utilized for coffee antioxidant capacity (AC) assay based on oxidation of hydroxycinnamic acids containing in coffee beans. Chlorogenic, caffeic and ferulic acids are the contributors to AC. The AC has been expressed in chlorogenic acid equivalents per 100 mL of coffee.

Keywords

Voltammetry, carbon nanotubes, hydroxycinnamic acids, antioxidant capacity, coffee, food analysis

The name of the journal

Food Analytical Methods

URL

https://www.scopus.com/inward/record.uri?eid=2-s2.0-84887317013&partnerID=40&md5=edacac2b0617e31a7e463e796b76efd7

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

https://repository.kpfu.ru/eng/?p_id=134848&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	Aytuganova Ilmira Ilnurovna	ru_RU
dc.contributor.author	Nizamova Alfiya Maratovna	ru_RU
dc.date.accessioned	2013-01-01T00:00:00Z	ru_RU
dc.date.available	2013-01-01T00:00:00Z	ru_RU
dc.date.issued	2013	ru_RU
dc.identifier.citation	Ziyatdinova, G. Differential pulse voltammetric assay of coffee antioxidant capacity with MWNT-modified electrode / G. Ziyatdinova, I. Aytuganova, A. Nizamova, H. Budnikov // Food Anal. Meth. - 2013. - V. 6. - No. 6. - P. 1629-1638.	ru_RU
dc.identifier.uri	https://repository.kpfu.ru/eng/?p_id=134848&p_lang=2	ru_RU
dc.description.abstract	Food Analytical Methods	ru_RU
dc.description.abstract	Multi-walled carbon nanotube-modified glassy carbon electrode (GCE) has shown electrocatalytic activity toward electrochemical oxidation of hydroxycinnamic acids (chlorogenic, caffeic, p-coumaric and ferulic), i.e. decrease of the overpotential on 0.1?0.29 V and two- to threefold increase of oxidation currents in comparison with bare GCE under conditions of cyclic voltammetry. Oxidation of compounds under investigation is a diffusion-controlled process. The differential pulse voltammetry has been applied for the hydroxycinnamic acid quantification. The calibration graphs linearity is continued in 2?5.5 order of concentrations. The approach developed has been utilized for coffee antioxidant capacity (AC) assay based on oxidation of hydroxycinnamic acids containing in coffee beans. Chlorogenic, caffeic and ferulic acids are the contributors to AC. The AC has been expressed in chlorogenic acid equivalents per 100 mL of coffee.	ru_RU
dc.language.iso	ru	ru_RU
dc.subject	Voltammetry	ru_RU
dc.subject	carbon nanotubes	ru_RU
dc.subject	hydroxycinnamic acids	ru_RU
dc.subject	antioxidant capacity	ru_RU
dc.subject	coffee	ru_RU
dc.subject	food analysis	ru_RU
dc.title	Differential Pulse Voltammetric Assay of Coffee Antioxidant Capacity with MWNT-Modified Electrode	ru_RU
dc.type	Articles in international journals and collections	ru_RU