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Statements

Subject Item
n2:RIV%2F60461373%3A22330%2F09%3A00022249%21RIV10-MSM-22330___
rdf:type
n13:Vysledek skos:Concept
dcterms:description
Heat induced cis-trans isomerisation of sunflower oils depending on temperature, reaction time and original content of linoleic acid was investigated. The content of isomeric fatty acids was determined by gas chromatography and the content of polymers by gel permeation high-performance liquid chromatography. The content of trans fatty acids increased with time and with temperature and a rate of cis-trans isomerisation and polymerisation depends on the temperature according to Arrhenius equation. The content of polymers was significantly lower in sunflower oil with high content of oleic acid because of the low concentration of linoleic acid in oil. In both oils the content of conjugated linoleic acid initially increased depending on time and temperature, however after certain time the stationary state occurred. Polymerisation of polyenoic fatty acids takes place directly with heat induced cis-trans isomerisation. Heat induced cis-trans isomerisation of sunflower oils depending on temperature, reaction time and original content of linoleic acid was investigated. The content of isomeric fatty acids was determined by gas chromatography and the content of polymers by gel permeation high-performance liquid chromatography. The content of trans fatty acids increased with time and with temperature and a rate of cis-trans isomerisation and polymerisation depends on the temperature according to Arrhenius equation. The content of polymers was significantly lower in sunflower oil with high content of oleic acid because of the low concentration of linoleic acid in oil. In both oils the content of conjugated linoleic acid initially increased depending on time and temperature, however after certain time the stationary state occurred. Polymerisation of polyenoic fatty acids takes place directly with heat induced cis-trans isomerisation.
dcterms:title
Changes of sunflower oil polyenoic fatty acids under high temperatures Changes of sunflower oil polyenoic fatty acids under high temperatures
skos:prefLabel
Changes of sunflower oil polyenoic fatty acids under high temperatures Changes of sunflower oil polyenoic fatty acids under high temperatures
skos:notation
RIV/60461373:22330/09:00022249!RIV10-MSM-22330___
n3:aktivita
n16:Z
n3:aktivity
Z(MSM6046137305)
n3:cisloPeriodika
Sp.Iss. SI
n3:dodaniDat
n9:2010
n3:domaciTvurceVysledku
n4:5886163 n4:3594416 n4:8102856 n4:6854931 n4:8603316
n3:druhVysledku
n17:J
n3:duvernostUdaju
n15:S
n3:entitaPredkladatele
n14:predkladatel
n3:idSjednocenehoVysledku
306709
n3:idVysledku
RIV/60461373:22330/09:00022249
n3:jazykVysledku
n10:eng
n3:klicovaSlova
cis-trans isomerisation; polymerisation; trans fatty acids; conjugated linoleic acid
n3:klicoveSlovo
n7:conjugated%20linoleic%20acid n7:cis-trans%20isomerisation n7:trans%20fatty%20acids n7:polymerisation
n3:kodStatuVydavatele
CZ - Česká republika
n3:kontrolniKodProRIV
[9F3E3DE8670A]
n3:nazevZdroje
Czech Journal of Food Science
n3:obor
n11:GM
n3:pocetDomacichTvurcuVysledku
5
n3:pocetTvurcuVysledku
5
n3:rokUplatneniVysledku
n9:2009
n3:svazekPeriodika
27
n3:tvurceVysledku
Šmidrkal, Jan Cihelková, Klára Zárubová, Markéta Hrádková, Iveta Filip, Vladimír
n3:wos
000269005600005
n3:zamer
n18:MSM6046137305
s:issn
1212-1800
s:numberOfPages
4
n12:organizacniJednotka
22330