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Influence of metal ions on thermal generation of carbohydrate radicals in native and modified starch studied by EPR

Influence of metal ions on thermal generation of ...

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dc.contributor.author Łabanowska, Maria [SAP11010689] pl
dc.contributor.author Kurdziel, Magdalena [SAP11013001] pl
dc.contributor.author Bidzińska, Ewa [SAP11012129] pl
dc.contributor.author Fortuna, Teresa pl
dc.contributor.author Pietrzyk, Sławomir pl
dc.contributor.author Przetaczek-Rożnowska, Izabela pl
dc.contributor.author Rożnowski, Jacek pl
dc.date.accessioned 2015-06-03T08:12:39Z
dc.date.available 2015-06-03T08:12:39Z
dc.date.issued 2013 pl
dc.identifier.issn 0038-9056 pl
dc.identifier.uri http://ruj.uj.edu.pl/xmlui/handle/item/8792
dc.language eng pl
dc.title Influence of metal ions on thermal generation of carbohydrate radicals in native and modified starch studied by EPR pl
dc.type JournalArticle pl
dc.description.physical 469-482 pl
dc.abstract.en Influence of enrichment with ions from alkali (K), alkali-earth (Mg) and d transition (Cu, Fe) metal groups of native and modified starches on the process of carbohydrate radicals generation has been studied using electron paramagnetic resonance (EPR) spectroscopy. This technique allows following the character and amount of created radicals, as well as the changes in coordination sphere of transition metal ions incorporated into starch matrix. The main difference between transition metal ions and the ions of alkali and alkali-earth metals consisted in the character of their interactions with functional groups of starch. Transition metal ions coordinated glucose units of starch and influenced the mechanism of carbohydrate radical formation independently of the kind of starch modification. Interaction of starch, native and modified, with ions of alkali and alkali-earth metals did not change the mechanism of radical generation, however, influenced their number. Contents of total metal ions found analytically by spectroscopic methods and by EPR allowed determination of the amount of transition metal ions engaged in interactions with starch matrix, as well as the differentiating of native and modified starch in respect of their metal ions adsorptive abilit. pl
dc.subject.en carbohydrate radicals pl
dc.subject.en electron paramagnetic resonance pl
dc.subject.en starch modifications pl
dc.subject.en metal ions pl
dc.description.volume 65 pl
dc.description.number 5-6 pl
dc.identifier.doi 10.1002/star.201200165 pl
dc.identifier.eissn 1521-379X pl
dc.title.journal Starch = Stärke pl
dc.language.container eng pl
dc.affiliation Wydział Chemii : Zakład Chemii Nieorganicznej pl
dc.subtype Article pl
dc.rights.original bez licencji pl
.pointsMNiSW [2013 A]: 25

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