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Statements

Subject Item

n2:RIV%2F00216305%3A26310%2F10%3APU87929%21RIV12-MSM-26310___

rdf:type

n8:Vysledek skos:Concept

dcterms:description

Antioxidant activities of phenolic compounds have been of great interest for fatty food producers, however the activities substantially vary from one food application to another. In the present study we evaluated antioxidant activities of four phenolic compounds - propyl gallate, caffeic, ferulic, and p-coumaric acid. The activity of these antioxidants has been studied in relation to the type of pro-oxidant in a lipid system. To study oxidation, an emulsion-related food model system consisting of marine phospholipids in liposomes was used, in which the consumption of dissolved oxygen was continuously recorded to calculate the rate of lipid oxidation. Iron ions (Fe2+, Fe3+) and bovine hemoglobin (Hb), were applied to initiate lipid oxidation. In iron mediated oxidation, the expected antioxidant, caffeic acid, showed strong pro-oxidant activity, increasing the oxidation rate by almost 10 times. Among the other antioxidants propyl gallate was the most active compound, while ferulic and p-coumaric acids s Antioxidant activities of phenolic compounds have been of great interest for fatty food producers, however the activities substantially vary from one food application to another. In the present study we evaluated antioxidant activities of four phenolic compounds - propyl gallate, caffeic, ferulic, and p-coumaric acid. The activity of these antioxidants has been studied in relation to the type of pro-oxidant in a lipid system. To study oxidation, an emulsion-related food model system consisting of marine phospholipids in liposomes was used, in which the consumption of dissolved oxygen was continuously recorded to calculate the rate of lipid oxidation. Iron ions (Fe2+, Fe3+) and bovine hemoglobin (Hb), were applied to initiate lipid oxidation. In iron mediated oxidation, the expected antioxidant, caffeic acid, showed strong pro-oxidant activity, increasing the oxidation rate by almost 10 times. Among the other antioxidants propyl gallate was the most active compound, while ferulic and p-coumaric acids s

dcterms:title

Antioxidant activity depends on the type of pro-oxidant Antioxidant activity depends on the type of pro-oxidant

skos:prefLabel

Antioxidant activity depends on the type of pro-oxidant Antioxidant activity depends on the type of pro-oxidant

skos:notation

RIV/00216305:26310/10:PU87929!RIV12-MSM-26310___

n3:aktivita

n12:Z

n3:aktivity

Z(MSM0021630501)

n3:dodaniDat

n10:2012

n3:domaciTvurceVysledku

n11:9299939

n3:druhVysledku

n17:O

n3:duvernostUdaju

n14:S

n3:entitaPredkladatele

n13:predkladatel

n3:idSjednocenehoVysledku

247145

n3:idVysledku

RIV/00216305:26310/10:PU87929

n3:jazykVysledku

n15:eng

n3:klicovaSlova

Phenolic antioxidants, caffeic acid, marine lipids, lipid oxidation, prooxidants, iron, hemoglobin, oxygen uptake

n3:klicoveSlovo

n7:hemoglobin n7:Phenolic%20antioxidants n7:lipid%20oxidation n7:iron n7:oxygen%20uptake n7:marine%20lipids n7:caffeic%20acid n7:prooxidants

n3:kontrolniKodProRIV

[6ACBAB642DB9]

n3:obor

n16:GM

n3:pocetDomacichTvurcuVysledku

1

n3:pocetTvurcuVysledku

1

n3:rokUplatneniVysledku

n10:2010

n3:tvurceVysledku

Kristinová, Věra

n3:zamer

n4:MSM0021630501

n9:organizacniJednotka

26310