KFU. Card publication. Chronoamperometric estimation of cognac and brandy antioxidant capacity using MWNT modified glassy carbon electrode

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CHRONOAMPEROMETRIC ESTIMATION OF COGNAC AND BRANDY ANTIOXIDANT CAPACITY USING MWNT MODIFIED GLASSY CARBON ELECTRODE

Form of presentation

Articles in international journals and collections

Year of publication

2014

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Authors, employees of KFU

Budnikov German Konstantinovich, author

Ziyatdinova Guzel Kamilevna, author

Authors, students KFU

Salikhova Inna Ravilevna, author

Bibliographic description in the original language

Ziyatdinova G. Chronoamperometric estimation of cognac and brandy antioxidant capacity using MWNT modified glassy carbon electrode / G. Ziyatdinova, I. Salikhova, H. Budnikov // Talanta. – 2014. – V.125. – P.378-384.

Annotation

Cognac and brandy components are electrochemically oxidized on multi-walled carbon nanotube modified glassy carbon electrode at 0.44 and 0.59 V in 0.1 � phosphate buffer solution pH 3.0. Voltammetric behavior of the main antioxidant constituents of cognac (ellagic and gallic acids, syringaldehyde, coniferaldehyde, vanillin, 5-hydroxymethylfurfural and furfural) has been investigated. The peak at the less positive potential of cognacs is caused by oxidation of gallic acid as well as syring- and coniferaldehydes. The second peak corresponds to ellagic acid oxidation. One-step chronoamperometry at 0.59 V for 75 s has been applied for the cognac and brandy antioxidant capacity (AOC) evaluation. Ellagic acid being the main antioxidant of cognac has been used as reference substance. The chronoamperometric response of ellagic acid is linear in the range of 0.66?52.8 ?M with the limits of detection and quantification of 0.19 and 0.63 ?M, respectively. AOC in ellagic acid equivalents per 100 mL

Keywords

Chronoamperometry, Voltammetry, Chemically modified electrodes, Antioxidant capacity, Phenolic antioxidants, Cognac and brandy

The name of the journal

TALANTA

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

https://repository.kpfu.ru/eng/?p_id=107823&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	Salikhova Inna Ravilevna	ru_RU
dc.date.accessioned	2014-01-01T00:00:00Z	ru_RU
dc.date.available	2014-01-01T00:00:00Z	ru_RU
dc.date.issued	2014	ru_RU
dc.identifier.citation	Ziyatdinova G. Chronoamperometric estimation of cognac and brandy antioxidant capacity using MWNT modified glassy carbon electrode / G. Ziyatdinova, I. Salikhova, H. Budnikov // Talanta. – 2014. – V.125. – P.378-384.	ru_RU
dc.identifier.uri	https://repository.kpfu.ru/eng/?p_id=107823&p_lang=2	ru_RU
dc.description.abstract	TALANTA	ru_RU
dc.description.abstract	Cognac and brandy components are electrochemically oxidized on multi-walled carbon nanotube modified glassy carbon electrode at 0.44 and 0.59 V in 0.1 � phosphate buffer solution pH 3.0. Voltammetric behavior of the main antioxidant constituents of cognac (ellagic and gallic acids, syringaldehyde, coniferaldehyde, vanillin, 5-hydroxymethylfurfural and furfural) has been investigated. The peak at the less positive potential of cognacs is caused by oxidation of gallic acid as well as syring- and coniferaldehydes. The second peak corresponds to ellagic acid oxidation. One-step chronoamperometry at 0.59 V for 75 s has been applied for the cognac and brandy antioxidant capacity (AOC) evaluation. Ellagic acid being the main antioxidant of cognac has been used as reference substance. The chronoamperometric response of ellagic acid is linear in the range of 0.66?52.8 ?M with the limits of detection and quantification of 0.19 and 0.63 ?M, respectively. AOC in ellagic acid equivalents per 100 mL	ru_RU
dc.language.iso	ru	ru_RU
dc.subject	Chronoamperometry	ru_RU
dc.subject	Voltammetry	ru_RU
dc.subject	Chemically modified electrodes	ru_RU
dc.subject	Antioxidant capacity	ru_RU
dc.subject	Phenolic antioxidants	ru_RU
dc.subject	Cognac and brandy	ru_RU
dc.title	Chronoamperometric estimation of cognac and brandy antioxidant capacity using MWNT modified glassy carbon electrode	ru_RU
dc.type	Articles in international journals and collections	ru_RU