КФУ. Карточка публикации. Electrogenerated bromine as a coulometric reagent for the estimation of the bioavailability of polyphenols

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ELECTROGENERATED BROMINE AS A COULOMETRIC REAGENT FOR THE ESTIMATION OF THE BIOAVAILABILITY OF POLYPHENOLS

Форма представления

Статьи в российских журналах и сборниках

Год публикации

2011

Язык

английский

Авторы, сотрудники КФУ

Будников Герман Константинович, автор

Зиятдинова Гузель Камилевна, автор

Авторы, аспиранты КФУ

Низамова Альфия Маратовна, автор

Библиографическое описание на языке оригинала

Nizamova, A.M. Electrogenerated bromine as a coulometric reagent for the estimation of the bioavailability of polyphenols / A.M. Nizamova, G.K Ziyatdinova, G.K Budnikov // J. Anal. Chem. - 2011. - V. 66. - No. 3. - P. 301-309.

Аннотация

A method is proposed for the estimation of the bioavailability of polyphenols using electrogenerated bromine as a coulometric titrant. The titration of model solutions of casein and bovine serum albumin (BSA) shows that casein does not interact with electrogenerated bromine, while BSA reacts with the titrant in the ratio 1 : 63. The proteins bind rutin and quercetin (from 14 to 90%) at a high rate and thus reduce the bioavailability of polyphenols. The concentration of free polyphenol is reduced with an increase in the concentration of protein in the mixture. The total antioxidant capacity (AOC) of tea is determined. Green tea is shown to possess higher AOC than the black one because of the partial oxidation of polyphenols to respective thearubigins and theaflavins at the fermentation step in the production of green tea. The total AOC of tea drops from 7 to 85%, in proportion to the increase in the amount of milk in the mixture. Milk proteins bind tea polyphenols into complexes.

Ключевые слова

Polyphenols, bromine, bioavailability

Название журнала

J ANALCHEM+

URL

http://link.springer.com/article/10.1134%2FS1061934811010114

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https://repository.kpfu.ru/?p_id=66659

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	Низамова Альфия Маратовна	ru_RU
dc.date.accessioned	2011-01-01T00:00:00Z	ru_RU
dc.date.available	2011-01-01T00:00:00Z	ru_RU
dc.date.issued	2011	ru_RU
dc.identifier.citation	Nizamova, A.M. Electrogenerated bromine as a coulometric reagent for the estimation of the bioavailability of polyphenols / A.M. Nizamova, G.K Ziyatdinova, G.K Budnikov // J. Anal. Chem. - 2011. - V. 66. - No. 3. - P. 301-309.	ru_RU
dc.identifier.uri	https://repository.kpfu.ru/?p_id=66659	ru_RU
dc.description.abstract	J ANALCHEM+	ru_RU
dc.description.abstract	A method is proposed for the estimation of the bioavailability of polyphenols using electrogenerated bromine as a coulometric titrant. The titration of model solutions of casein and bovine serum albumin (BSA) shows that casein does not interact with electrogenerated bromine, while BSA reacts with the titrant in the ratio 1 : 63. The proteins bind rutin and quercetin (from 14 to 90%) at a high rate and thus reduce the bioavailability of polyphenols. The concentration of free polyphenol is reduced with an increase in the concentration of protein in the mixture. The total antioxidant capacity (AOC) of tea is determined. Green tea is shown to possess higher AOC than the black one because of the partial oxidation of polyphenols to respective thearubigins and theaflavins at the fermentation step in the production of green tea. The total AOC of tea drops from 7 to 85%, in proportion to the increase in the amount of milk in the mixture. Milk proteins bind tea polyphenols into complexes.	ru_RU
dc.language.iso	ru	ru_RU
dc.subject	Polyphenols	ru_RU
dc.subject	bromine	ru_RU
dc.subject	bioavailability	ru_RU
dc.title	Electrogenerated bromine as a coulometric reagent for the estimation of the bioavailability of polyphenols	ru_RU
dc.type	Статьи в российских журналах и сборниках	ru_RU