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rdf:type
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Description
| - Vzorky 1,3-dicaffeoylchinové kyseliny a 1,5-dicaffeoylchinové kyseliny a jejich hexaacetylderivátů byly studovány pomocí pozitivní a negativní hmotnostní spektrometrie spojené s ionizací elektrosprejem a tandemovou hmotnostní spektrometrii. Rozdíly v různých spektrech umožňují rozlišení každého izomeru. (cs)
- Samples of 1,3- (1) and 1,5-dicaffeoylquinic acid (2) and their hexaacetate derivatives were examined using positive and negative electrospray ionization mass spectrometry and tandem mass spectrometry. Differences in the various spectra allow the discrimination of each of the isomers. Specific losses in the spectra of 2 also permit the identification of the site of substitution of one of the caffeic acid moieties as being at the 5-position. The spectra of 3,5- (3) and 4,5-dicaffeoylquinic (4) acids and their hexaacetate derivatives were compared with those of 1 and 2 and their derivatives, and differences in ion abundances or the presence/absence of specific ions can be used to identify uniquely each of the compounds.
- Samples of 1,3- (1) and 1,5-dicaffeoylquinic acid (2) and their hexaacetate derivatives were examined using positive and negative electrospray ionization mass spectrometry and tandem mass spectrometry. Differences in the various spectra allow the discrimination of each of the isomers. Specific losses in the spectra of 2 also permit the identification of the site of substitution of one of the caffeic acid moieties as being at the 5-position. The spectra of 3,5- (3) and 4,5-dicaffeoylquinic (4) acids and their hexaacetate derivatives were compared with those of 1 and 2 and their derivatives, and differences in ion abundances or the presence/absence of specific ions can be used to identify uniquely each of the compounds. (en)
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Title
| - Hmotnostní spektrometrie 1,3- and 1,5-dicaffeoylchinové kyseliny (cs)
- Mass spectrometry of 1,3- and 1,5-dicaffeoylquinic acids
- Mass spectrometry of 1,3- and 1,5-dicaffeoylquinic acids (en)
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skos:prefLabel
| - Hmotnostní spektrometrie 1,3- and 1,5-dicaffeoylchinové kyseliny (cs)
- Mass spectrometry of 1,3- and 1,5-dicaffeoylquinic acids
- Mass spectrometry of 1,3- and 1,5-dicaffeoylquinic acids (en)
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skos:notation
| - RIV/00216224:14110/04:00011442!RIV09-GA0-14110___
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http://linked.open...avai/riv/aktivita
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http://linked.open...avai/riv/aktivity
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http://linked.open...iv/cisloPeriodika
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http://linked.open...vai/riv/dodaniDat
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http://linked.open...aciTvurceVysledku
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http://linked.open.../riv/druhVysledku
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http://linked.open...iv/duvernostUdaju
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http://linked.open...titaPredkladatele
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http://linked.open...dnocenehoVysledku
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http://linked.open...ai/riv/idVysledku
| - RIV/00216224:14110/04:00011442
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http://linked.open...riv/jazykVysledku
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http://linked.open.../riv/klicovaSlova
| - tandem mass spectrometry; natural products; dicaffeoylquinic acids; electrospray ionization (en)
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http://linked.open.../riv/klicoveSlovo
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http://linked.open...odStatuVydavatele
| - GB - Spojené království Velké Británie a Severního Irska
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http://linked.open...ontrolniKodProRIV
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http://linked.open...i/riv/nazevZdroje
| - Journal of Mass Spectrometry
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http://linked.open...in/vavai/riv/obor
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http://linked.open...ichTvurcuVysledku
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http://linked.open...cetTvurcuVysledku
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http://linked.open...vavai/riv/projekt
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http://linked.open...UplatneniVysledku
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http://linked.open...v/svazekPeriodika
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http://linked.open...iv/tvurceVysledku
| - Táborská, Eva
- Slanina, Jiří
- Humpa, Otakar
- Schram, Karl
- Miketova, Petra
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http://linked.open...ain/vavai/riv/wos
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issn
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number of pages
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http://localhost/t...ganizacniJednotka
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