Interakce rostlinných polyfenolů s ionty železa

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216224%3A14110%2F04%3A00011718" target="_blank" >RIV/00216224:14110/04:00011718 - isvavai.cz</a>

Výsledek na webu

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DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

Interaction of Plant Polyphenols with Iron Ions

Popis výsledku v původním jazyce

Formation of free radicals is closely related to the redox state of iron, e.g. ferrous ions are responsible for hydroxyl radical formation by Fenton reaction. Numerous authors have investigated the free radical scavenging activity of plant polyphenols, and several reports have been made to elucidated iron or copper ions chelating ability of polyphenols, although the interaction of plant polyphenols with transient metal ions has not been fully resolved. In this study we investigated the formation of Fe2+and Fe3+ complexes with naturally occurring polyphenolic compounds above all phenolic acids by spectrophotometric measurement at pH 7.4. The stability of complexes was evaluated after addition of EDTA and ascorbic acid. Influence of ligands on Fe2+ autooxidation and Fe3+ reducing activity of polyphenols was assessed by determination of Fe2+ concentration using ferrozine. Interaction of polyphenolic compounds with iron was compared with that of ascorbic acid and cysteine. Both ascorbic a

Název v anglickém jazyce

Interaction of Plant Polyphenols with Iron Ions

Popis výsledku anglicky

Formation of free radicals is closely related to the redox state of iron, e.g. ferrous ions are responsible for hydroxyl radical formation by Fenton reaction. Numerous authors have investigated the free radical scavenging activity of plant polyphenols, and several reports have been made to elucidated iron or copper ions chelating ability of polyphenols, although the interaction of plant polyphenols with transient metal ions has not been fully resolved. In this study we investigated the formation of Fe2+and Fe3+ complexes with naturally occurring polyphenolic compounds above all phenolic acids by spectrophotometric measurement at pH 7.4. The stability of complexes was evaluated after addition of EDTA and ascorbic acid. Influence of ligands on Fe2+ autooxidation and Fe3+ reducing activity of polyphenols was assessed by determination of Fe2+ concentration using ferrozine. Interaction of polyphenolic compounds with iron was compared with that of ascorbic acid and cysteine. Both ascorbic a

Druh

D - Stať ve sborníku

CEP obor

CE - Biochemie

OECD FORD obor

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Projekt

<a href="/cs/project/GA303%2F00%2FD062" target="_blank" >GA303/00/D062: Biologická dostupnost a mechanismus antioxidačního účinku fenolických kyselin a lignanů</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2004

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název statě ve sborníku

Vitamins 2004 - Targeted Nutritional Therapy

ISBN

80-7194-644-3

ISSN

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e-ISSN

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Počet stran výsledku

1

Strana od-do

168-168

Název nakladatele

Univerzita Pardubice

Místo vydání

Pardubice

Místo konání akce

Pardubice

Datum konání akce

13. 9. 2004

Typ akce podle státní příslušnosti

CST - Celostátní akce

Kód UT WoS článku

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