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Statements

Subject Item
n2:RIV%2F00216305%3A26310%2F09%3APU87826%21RIV12-MSM-26310___
rdf:type
skos:Concept n13:Vysledek
dcterms:description
The antioxidant activity of three naturally occurring phenolic acids, caffeic (CaA), ferulic (FeA), and p-coumaric acid (CoA), and a synthetic compound, propyl gallate (PG), was evaluated in a foodrelated model system, a liposome dispersion of marine polyunsaturated fatty acids. Oxidation was induced by two different prooxidants, free iron ions and bovine hemoglobin (Hb). Continuous measurement of oxygen uptake was used to quantify the rate of lipid oxidation at steady state. Free iron-induced oxidation was reduced in the following order: PG > FeA > CoA. Caffeic acid worked as a prooxidant and increased the oxidation rate by a factor of 9. For Hb-induced oxidation, the relative efficiency was PG > CaA ~ FeA >> CoA. The antioxidant activity was also evaluated by four antioxidant capacity assays. In the Folin-Ciocalteu, ferric reducing/antioxidant power, and 2,2-diphenyl-1-picrylhydrazyl radical scavenging assays, the antioxidant activity followed the sequence PG > CaA > FeA > CoA. The order for the 2,2 The antioxidant activity of three naturally occurring phenolic acids, caffeic (CaA), ferulic (FeA), and p-coumaric acid (CoA), and a synthetic compound, propyl gallate (PG), was evaluated in a foodrelated model system, a liposome dispersion of marine polyunsaturated fatty acids. Oxidation was induced by two different prooxidants, free iron ions and bovine hemoglobin (Hb). Continuous measurement of oxygen uptake was used to quantify the rate of lipid oxidation at steady state. Free iron-induced oxidation was reduced in the following order: PG > FeA > CoA. Caffeic acid worked as a prooxidant and increased the oxidation rate by a factor of 9. For Hb-induced oxidation, the relative efficiency was PG > CaA ~ FeA >> CoA. The antioxidant activity was also evaluated by four antioxidant capacity assays. In the Folin-Ciocalteu, ferric reducing/antioxidant power, and 2,2-diphenyl-1-picrylhydrazyl radical scavenging assays, the antioxidant activity followed the sequence PG > CaA > FeA > CoA. The order for the 2,2
dcterms:title
Antioxidant activity of phenolic acids in lipid oxidation catalyzed by different prooxidants Antioxidant activity of phenolic acids in lipid oxidation catalyzed by different prooxidants
skos:prefLabel
Antioxidant activity of phenolic acids in lipid oxidation catalyzed by different prooxidants Antioxidant activity of phenolic acids in lipid oxidation catalyzed by different prooxidants
skos:notation
RIV/00216305:26310/09:PU87826!RIV12-MSM-26310___
n3:aktivita
n7:I n7:Z
n3:aktivity
I, Z(MSM0021630501)
n3:cisloPeriodika
57
n3:dodaniDat
n6:2012
n3:domaciTvurceVysledku
n18:9299939
n3:druhVysledku
n9:J
n3:duvernostUdaju
n17:S
n3:entitaPredkladatele
n12:predkladatel
n3:idSjednocenehoVysledku
303508
n3:idVysledku
RIV/00216305:26310/09:PU87826
n3:jazykVysledku
n11:eng
n3:klicovaSlova
Phenolic antioxidants, lipid oxidation, iron, hemoglobin, oxygen uptake
n3:klicoveSlovo
n8:Phenolic%20antioxidants n8:hemoglobin n8:lipid%20oxidation n8:oxygen%20uptake n8:iron
n3:kodStatuVydavatele
US - Spojené státy americké
n3:kontrolniKodProRIV
[2DCBD3BB7B50]
n3:nazevZdroje
JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY
n3:obor
n4:GM
n3:pocetDomacichTvurcuVysledku
1
n3:pocetTvurcuVysledku
1
n3:rokUplatneniVysledku
n6:2009
n3:svazekPeriodika
2009
n3:tvurceVysledku
Kristinová, Věra
n3:zamer
n10:MSM0021630501
s:issn
0021-8561
s:numberOfPages
9
n15:organizacniJednotka
26310