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Statements

Subject Item
n2:RIV%2F61388963%3A_____%2F11%3A00359271%21RIV12-AV0-61388963
rdf:type
skos:Concept n11:Vysledek
dcterms:description
Unsaturated wax esters (WEs) provided molecular adducts with C3H5N ([M+55]+.) in APCI sources in the presence of acetonitrile. CID of [M+55]+. gave fragments allowing localization of double bond(s) in hydrocarbon chains of WEs. These fragments were formed by cleavage of C-C bonds next to the double bond from its both sides. In methylene-interrupted polyunsaturated WEs, the diagnostic fragments related to each double bond were detected; the most abundant were those corresponding to cleavage of C-C bond next to the first and the last double bond. A simple nomenclature based on .alpha. and .omega. ions has been introduced. A data-dependent HPLC/APCI-MS2 method for comprehensive characterizing WEs in their complex mixtures has been developed and applied to natural mixtures of WEs isolated form jojoba oil and beeswax. More than 50 WE molecular species were completely identified, including information on acid and alcohol chain length and position of double bonds. Unsaturated wax esters (WEs) provided molecular adducts with C3H5N ([M+55]+.) in APCI sources in the presence of acetonitrile. CID of [M+55]+. gave fragments allowing localization of double bond(s) in hydrocarbon chains of WEs. These fragments were formed by cleavage of C-C bonds next to the double bond from its both sides. In methylene-interrupted polyunsaturated WEs, the diagnostic fragments related to each double bond were detected; the most abundant were those corresponding to cleavage of C-C bond next to the first and the last double bond. A simple nomenclature based on .alpha. and .omega. ions has been introduced. A data-dependent HPLC/APCI-MS2 method for comprehensive characterizing WEs in their complex mixtures has been developed and applied to natural mixtures of WEs isolated form jojoba oil and beeswax. More than 50 WE molecular species were completely identified, including information on acid and alcohol chain length and position of double bonds.
dcterms:title
Localization of Double Bonds in Wax Esters by High-Performance Liquid Chromatography/Atmospheric Pressure Chemical Ionization Mass Spectrometry Utilizing Fragmentation of Acetonitrile-Related Adducts Localization of Double Bonds in Wax Esters by High-Performance Liquid Chromatography/Atmospheric Pressure Chemical Ionization Mass Spectrometry Utilizing Fragmentation of Acetonitrile-Related Adducts
skos:prefLabel
Localization of Double Bonds in Wax Esters by High-Performance Liquid Chromatography/Atmospheric Pressure Chemical Ionization Mass Spectrometry Utilizing Fragmentation of Acetonitrile-Related Adducts Localization of Double Bonds in Wax Esters by High-Performance Liquid Chromatography/Atmospheric Pressure Chemical Ionization Mass Spectrometry Utilizing Fragmentation of Acetonitrile-Related Adducts
skos:notation
RIV/61388963:_____/11:00359271!RIV12-AV0-61388963
n11:predkladatel
n17:ico%3A61388963
n3:aktivita
n12:Z n12:P
n3:aktivity
P(GA203/09/0139), Z(AV0Z40550506), Z(MSM0021620857)
n3:cisloPeriodika
8
n3:dodaniDat
n9:2012
n3:domaciTvurceVysledku
n5:8907129 n5:1551167 n5:9081216 n5:3749134
n3:druhVysledku
n16:J
n3:duvernostUdaju
n14:S
n3:entitaPredkladatele
n6:predkladatel
n3:idSjednocenehoVysledku
209810
n3:idVysledku
RIV/61388963:_____/11:00359271
n3:jazykVysledku
n19:eng
n3:klicovaSlova
Ion-molecule reactions; lipids
n3:klicoveSlovo
n8:Ion-molecule%20reactions n8:lipids
n3:kodStatuVydavatele
US - Spojené státy americké
n3:kontrolniKodProRIV
[8181DE934479]
n3:nazevZdroje
Analytical Chemistry
n3:obor
n20:CF
n3:pocetDomacichTvurcuVysledku
4
n3:pocetTvurcuVysledku
5
n3:projekt
n13:GA203%2F09%2F0139
n3:rokUplatneniVysledku
n9:2011
n3:svazekPeriodika
83
n3:tvurceVysledku
Pecková, K. Háková, Martina Vrkoslav, Vladimír Urbanová, Klára Cvačka, Josef
n3:wos
000289223700021
n3:zamer
n15:MSM0021620857 n15:AV0Z40550506
s:issn
0003-2700
s:numberOfPages
9
n18:doi
10.1021/ac1030682