KFU. Card publication. Chronocoulometry of wine on multi-walled carbon nanotube modified electrode: Antioxidant capacity assay

KAZAN
FEDERAL UNIVERSITY

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CHRONOCOULOMETRY OF WINE ON MULTI-WALLED CARBON NANOTUBE MODIFIED ELECTRODE: ANTIOXIDANT CAPACITY ASSAY

Form of presentation

Articles in international journals and collections

Year of publication

2016

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Authors, employees of KFU

Budnikov German Konstantinovich, author

Guss Ekaterina Valerevna, author

Ziyatdinova Guzel Kamilevna, author

Authors, postgraduates KFU

Guss Ekaterina Valerevna, postgraduate kfu

Bibliographic description in the original language

Ziyatdinova G. Chronocoulometry of wine on multi-walled carbon nanotube modified electrode: antioxidant capacity assay / G. Ziyatdinova, E. Kozlova, H. Budnikov // Food Chem. - 2016. - V.196. - P.405-410.

Annotation

Phenolic antioxidants of wine were electrochemically oxidized on multi-walled carbon nanotubes modified glassy carbon electrode (MWNT/GCE) in phosphate buffer solution. Three oxidation peaks were observed at 0.39, 0.61 and 0.83 V for red dry wine and 0.39, 0.80 and 1.18 V for white dry wine, respectively, using differential pulse voltammetry at pH 4.0. The oxidation potentials for individual phenolic antioxidants confirmed the integral nature of the analytical signals for the wines examined. A one-step chronocoulometric method at 0.83 and 1.18 V for red and white wines, respectively, has been developed for the evaluation of wine antioxidant capacity (AOC). The AOC is expressed in gallic acid equivalents per 1 L of wine. The AOC of white wine was significantly less than red wine (386+/-112 vs. 1224+/-184, p < 0.0001), as might be expected. Positive correlations were observed between gallic acid equivalent AOC of wine and total antioxidant capacity.

Keywords

Differential pulse voltammetry, Chronocoulometry, Carbon nanotubes, Polyphenols, Antioxidant capacity, Wine, Food analysis.

The name of the journal

FOOD CHEMISTRY

URL

http://www.scopus.com/inward/record.url?eid=2-s2.0-84942316550&partnerID=40&md5=5582bf04e154f52073eef2963001879e

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

https://repository.kpfu.ru/eng/?p_id=121462&p_lang=2

Full metadata record

Field DC	Value	Language
dc.contributor.author	Budnikov German Konstantinovich	ru_RU
dc.contributor.author	Guss Ekaterina Valerevna	ru_RU
dc.contributor.author	Ziyatdinova Guzel Kamilevna	ru_RU
dc.contributor.author	Guss Ekaterina Valerevna	ru_RU
dc.date.accessioned	2016-01-01T00:00:00Z	ru_RU
dc.date.available	2016-01-01T00:00:00Z	ru_RU
dc.date.issued	2016	ru_RU
dc.identifier.citation	Ziyatdinova G. Chronocoulometry of wine on multi-walled carbon nanotube modified electrode: antioxidant capacity assay / G. Ziyatdinova, E. Kozlova, H. Budnikov // Food Chem. - 2016. - V.196. - P.405-410.	ru_RU
dc.identifier.uri	https://repository.kpfu.ru/eng/?p_id=121462&p_lang=2	ru_RU
dc.description.abstract	FOOD CHEMISTRY	ru_RU
dc.description.abstract	Phenolic antioxidants of wine were electrochemically oxidized on multi-walled carbon nanotubes modified glassy carbon electrode (MWNT/GCE) in phosphate buffer solution. Three oxidation peaks were observed at 0.39, 0.61 and 0.83 V for red dry wine and 0.39, 0.80 and 1.18 V for white dry wine, respectively, using differential pulse voltammetry at pH 4.0. The oxidation potentials for individual phenolic antioxidants confirmed the integral nature of the analytical signals for the wines examined. A one-step chronocoulometric method at 0.83 and 1.18 V for red and white wines, respectively, has been developed for the evaluation of wine antioxidant capacity (AOC). The AOC is expressed in gallic acid equivalents per 1 L of wine. The AOC of white wine was significantly less than red wine (386+/-112 vs. 1224+/-184, p < 0.0001), as might be expected. Positive correlations were observed between gallic acid equivalent AOC of wine and total antioxidant capacity.	ru_RU
dc.language.iso	ru	ru_RU
dc.subject	Differential pulse voltammetry	ru_RU
dc.subject	Chronocoulometry	ru_RU
dc.subject	Carbon nanotubes	ru_RU
dc.subject	Polyphenols	ru_RU
dc.subject	Antioxidant capacity	ru_RU
dc.subject	Wine	ru_RU
dc.subject	Food analysis.	ru_RU
dc.title	Chronocoulometry of wine on multi-walled carbon nanotube modified electrode: Antioxidant capacity assay	ru_RU
dc.type	Articles in international journals and collections	ru_RU