| Форма представления | Статьи в российских журналах и сборниках |
| Год публикации | 2013 |
| Язык | английский |
|
Будников Герман Константинович, автор
Зиятдинова Гузель Камилевна, автор
|
|
Низамова Альфия Маратовна, автор
|
|
Айтуганова Ильмира Ильнуровна, автор
|
| Библиографическое описание на языке оригинала |
Ziyatdinova, G.K. Voltammetric evaluation of the antioxidant capacity of tea on electrodes modified with multiwalled carbon nanotubes / G.K. Ziyatdinova, A.M. Nizamova, I.I. Aytuganova, H.C. Budnikov // J. Anal. Chem. - 2013. - V. 68. - No. 2. - P. 132-139. |
| Аннотация |
The characteristics of the voltammograms of tea polyphenols on a glassy carbon electrode modified with multi-walled carbon nanotubes (MCNT-GCE) were evaluated. With the use of atomic force microscopy, it was found that MCNTs are oriented as rows 0.8?1.0 μm wide with alternating hills to 586 nm in height. Polyphenols other than of tannin are reversibly oxidized at the first step. Corresponding electrode
reaction schemes are proposed. A voltammetric procedure for the estimation of the antioxidant capacity (AOC) of tea based on the oxidation of its polyphenol compounds was developed. The voltammograms of tea exhibited clearly defined peaks and oxidation steps whose potentials depend on the type of tea. The area of oxidation peaks was chosen as the parameter that characterizes antioxidant properties. The AOC of tea was expressed in terms of catechin equivalents per 100 mL of a beverage. 27 tea samples were analyzed. |
| Ключевые слова |
Cyclic voltammetry, modified electrodes, carbon nanotubes, polyphenols, antioxidant capacity,
tea, food analysis |
| Название журнала |
JOURNAL OF ANALYTICAL CHEMISTRY
|
| URL |
https://www.scopus.com/inward/record.uri?eid=2-s2.0-84887319789&partnerID=40&md5=48b9c57c380212d1585b1153d3ff5c2f |
| Пожалуйста, используйте этот идентификатор, чтобы цитировать или ссылаться на эту карточку |
https://repository.kpfu.ru/?p_id=134849 |
Полная запись метаданных  |
| Поле DC |
Значение |
Язык |
| dc.contributor.author |
Будников Герман Константинович |
ru_RU |
| dc.contributor.author |
Зиятдинова Гузель Камилевна |
ru_RU |
| dc.contributor.author |
Айтуганова Ильмира Ильнуровна |
ru_RU |
| dc.contributor.author |
Низамова Альфия Маратовна |
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.K. Voltammetric evaluation of the antioxidant capacity of tea on electrodes modified with multiwalled carbon nanotubes / G.K. Ziyatdinova, A.M. Nizamova, I.I. Aytuganova, H.C. Budnikov // J. Anal. Chem. - 2013. - V. 68. - No. 2. - P. 132-139. |
ru_RU |
| dc.identifier.uri |
https://repository.kpfu.ru/?p_id=134849 |
ru_RU |
| dc.description.abstract |
JOURNAL OF ANALYTICAL CHEMISTRY |
ru_RU |
| dc.description.abstract |
The characteristics of the voltammograms of tea polyphenols on a glassy carbon electrode modified with multi-walled carbon nanotubes (MCNT-GCE) were evaluated. With the use of atomic force microscopy, it was found that MCNTs are oriented as rows 0.8?1.0 μm wide with alternating hills to 586 nm in height. Polyphenols other than of tannin are reversibly oxidized at the first step. Corresponding electrode
reaction schemes are proposed. A voltammetric procedure for the estimation of the antioxidant capacity (AOC) of tea based on the oxidation of its polyphenol compounds was developed. The voltammograms of tea exhibited clearly defined peaks and oxidation steps whose potentials depend on the type of tea. The area of oxidation peaks was chosen as the parameter that characterizes antioxidant properties. The AOC of tea was expressed in terms of catechin equivalents per 100 mL of a beverage. 27 tea samples were analyzed. |
ru_RU |
| dc.language.iso |
ru |
ru_RU |
| dc.subject |
Cyclic voltammetry |
ru_RU |
| dc.subject |
modified electrodes |
ru_RU |
| dc.subject |
carbon nanotubes |
ru_RU |
| dc.subject |
polyphenols |
ru_RU |
| dc.subject |
antioxidant capacity |
ru_RU |
| dc.subject |
tea |
ru_RU |
| dc.subject |
food analysis |
ru_RU |
| dc.title |
Voltammetric evaluation of the antioxidant capacity of tea on electrodes modified with multiwalled carbon nanotubes |
ru_RU |
| dc.type |
Статьи в российских журналах и сборниках |
ru_RU |
|
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