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Description
  • Vznik volných radikálů je těsně spojen s redoxním stavem železa, např. železnaté ionty jsou zodpovědné za vznik hydroxylových radikálů Fentonovou reakcí. (cs)
  • 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 acid and cysteine
  • 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 acid and cysteine (en)
Title
  • Interaction of Plant Polyphenols with Iron Ions
  • Interaction of Plant Polyphenols with Iron Ions (en)
  • Interakce rostlinných polyfenolů s ionty železa (cs)
skos:prefLabel
  • Interaction of Plant Polyphenols with Iron Ions
  • Interaction of Plant Polyphenols with Iron Ions (en)
  • Interakce rostlinných polyfenolů s ionty železa (cs)
skos:notation
  • RIV/00216224:14110/04:00011718!RIV08-GA0-14110___
http://linked.open.../vavai/riv/strany
  • 168-168
http://linked.open...avai/riv/aktivita
http://linked.open...avai/riv/aktivity
  • P(GA303/00/D062)
http://linked.open...vai/riv/dodaniDat
http://linked.open...aciTvurceVysledku
http://linked.open.../riv/druhVysledku
http://linked.open...iv/duvernostUdaju
http://linked.open...titaPredkladatele
http://linked.open...dnocenehoVysledku
  • 568561
http://linked.open...ai/riv/idVysledku
  • RIV/00216224:14110/04:00011718
http://linked.open...riv/jazykVysledku
http://linked.open.../riv/klicovaSlova
  • polyphenols; iron ions; ferrozin (en)
http://linked.open.../riv/klicoveSlovo
http://linked.open...ontrolniKodProRIV
  • [4B733CCFDF2F]
http://linked.open...v/mistoKonaniAkce
  • Pardubice
http://linked.open...i/riv/mistoVydani
  • Pardubice
http://linked.open...i/riv/nazevZdroje
  • Vitamins 2004 - Targeted Nutritional Therapy
http://linked.open...in/vavai/riv/obor
http://linked.open...ichTvurcuVysledku
http://linked.open...cetTvurcuVysledku
http://linked.open...vavai/riv/projekt
http://linked.open...UplatneniVysledku
http://linked.open...iv/tvurceVysledku
  • Slanina, Jiří
  • Chvátalová, Kateřina
http://linked.open...vavai/riv/typAkce
http://linked.open.../riv/zahajeniAkce
number of pages
http://purl.org/ne...btex#hasPublisher
  • Univerzita Pardubice
https://schema.org/isbn
  • 80-7194-644-3
http://localhost/t...ganizacniJednotka
  • 14110
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