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Statements

Subject Item
n2:RIV%2F61388955%3A_____%2F11%3A00370911%21RIV12-GA0-61388955
rdf:type
skos:Concept n6:Vysledek
dcterms:description
The influence of the molecular cavity protection on degradation processes of bioorganic compounds quercetin and luteolin used as the original dyes in old tapestries was studied. The degradation processes were studied by electrochemical methods in aqueous media. The products of the exhaustive electrolysis were separated and identified by GC-MS analysis. Cyclic voltammetry characteristics indicate that the inclusion complex is formed. The inclusion affects the redox potentials of both oxidation waves related to the different dissociation forms of the flavonoid molecule. It was shown that decomposition products formed by the oxidation of quercetin are stabilized in the cavity of β-cyclodextrin, including the main oxidation product 2(3,4-dihydroxybenzoyl)-2,4,6-trihydroxybenzofuran-3(2H)-one. The formation of the 1:1 inclusion complex of luteolin with β-cyclodextrin is supported by the enhancement of fluorescence intensity. The influence of the molecular cavity protection on degradation processes of bioorganic compounds quercetin and luteolin used as the original dyes in old tapestries was studied. The degradation processes were studied by electrochemical methods in aqueous media. The products of the exhaustive electrolysis were separated and identified by GC-MS analysis. Cyclic voltammetry characteristics indicate that the inclusion complex is formed. The inclusion affects the redox potentials of both oxidation waves related to the different dissociation forms of the flavonoid molecule. It was shown that decomposition products formed by the oxidation of quercetin are stabilized in the cavity of β-cyclodextrin, including the main oxidation product 2(3,4-dihydroxybenzoyl)-2,4,6-trihydroxybenzofuran-3(2H)-one. The formation of the 1:1 inclusion complex of luteolin with β-cyclodextrin is supported by the enhancement of fluorescence intensity.
dcterms:title
The influence of the host–guest interaction on the oxidation of natural flavonoid dyes The influence of the host–guest interaction on the oxidation of natural flavonoid dyes
skos:prefLabel
The influence of the host–guest interaction on the oxidation of natural flavonoid dyes The influence of the host–guest interaction on the oxidation of natural flavonoid dyes
skos:notation
RIV/61388955:_____/11:00370911!RIV12-GA0-61388955
n6:predkladatel
n7:ico%3A61388955
n3:aktivita
n8:P n8:Z
n3:aktivity
P(GA203/08/1157), P(GA203/09/1607), Z(AV0Z40400503)
n3:cisloPeriodika
12
n3:dodaniDat
n10:2012
n3:domaciTvurceVysledku
n5:5218195 n5:2335808 n5:3021793 n5:8862842 n5:6128440
n3:druhVysledku
n9:J
n3:duvernostUdaju
n14:S
n3:entitaPredkladatele
n18:predkladatel
n3:idSjednocenehoVysledku
204633
n3:idVysledku
RIV/61388955:_____/11:00370911
n3:jazykVysledku
n19:eng
n3:klicovaSlova
oxidation; inclusion complexes; flavonoids
n3:klicoveSlovo
n4:inclusion%20complexes n4:oxidation n4:flavonoids
n3:kodStatuVydavatele
CZ - Česká republika
n3:kontrolniKodProRIV
[61AB9568557B]
n3:nazevZdroje
Collection of Czechoslovak Chemical Communications
n3:obor
n16:CG
n3:pocetDomacichTvurcuVysledku
5
n3:pocetTvurcuVysledku
7
n3:projekt
n13:GA203%2F08%2F1157 n13:GA203%2F09%2F1607
n3:rokUplatneniVysledku
n10:2011
n3:svazekPeriodika
76
n3:tvurceVysledku
Colombini, M. P. Hromadová, Magdaléna Degano, I. Sokolová, Romana Kolivoška, Viliam Ramešová, Šárka Gál, Miroslav
n3:wos
000299816100016
n3:zamer
n20:AV0Z40400503
s:issn
0010-0765
s:numberOfPages
17
n12:doi
10.1135/cccc2011106