About: Capillary Electrophoretic Studies of Acid-Base Properties of Sanguinarine and Chelerythrine Alkaloids.

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About: Capillary Electrophoretic Studies of Acid-Base Properties of Sanguinarine and Chelerythrine Alkaloids. Goto Sponge NotDistinct Permalink

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rdf:type	skos:Concept http://linked.opendata.cz/ontology/domain/vavai/Vysledek
Description	Capillary zone electrophoresis with UV detection was used for determination of dissociation constants of alkaloids sanguinarine and chelerythrine. Despite the limited solubility of the uncharged forms of the alkaloids resulting in insufficient analytical signal at higher pH the reliable dissociation constants were obtained when acidified samples containing low amount of the alkaloid were injected into the capillary. The precipitation of the alkaloid in the capillary induced by injecting sample of low pH into the background electrolyte of higher pH does not affect the mobility of the alkaloid if its concentration injected exceeds the solubility only to a small extent. Dissociation constants (pKR+) of sanguinarine and chelerythrine calculated to 8.3 +- 0.1 and 9.2 +- 0.1, respectively, are relevant to Good buffers of ionic strength of 30 mM. Capillary zone electrophoresis with UV detection was used for determination of dissociation constants of alkaloids sanguinarine and chelerythrine. Despite the limited solubility of the uncharged forms of the alkaloids resulting in insufficient analytical signal at higher pH the reliable dissociation constants were obtained when acidified samples containing low amount of the alkaloid were injected into the capillary. The precipitation of the alkaloid in the capillary induced by injecting sample of low pH into the background electrolyte of higher pH does not affect the mobility of the alkaloid if its concentration injected exceeds the solubility only to a small extent. Dissociation constants (pKR+) of sanguinarine and chelerythrine calculated to 8.3 +- 0.1 and 9.2 +- 0.1, respectively, are relevant to Good buffers of ionic strength of 30 mM. (en) Capillary zone electrophoresis with UV detection was used for determination of dissociation constants of alkaloids sanguinarine and chelerythrine. Despite the limited solubility of the uncharged forms of the alkaloids resulting in insufficient analytical signal at higher pH the reliable dissociation constants were obtained when acidified samples containing low amount of the alkaloid were injected into the capillary. The precipitation of the alkaloid in the capillary induced by injecting sample of low pH into the background electrolyte of higher pH does not affect the mobility of the alkaloid if its concentration injected exceeds the solubility only to a small extent. Dissociation constants (pKR+) of sanguinarine and chelerythrine calculated to 8.3 +- 0.1 and 9.2 +- 0.1, respectively, are relevant to Good buffers of ionic strength of 30 mM. (cs)
Title	CE stanovení disociačních konstant (cs) Capillary Electrophoretic Studies of Acid-Base Properties of Sanguinarine and Chelerythrine Alkaloids. Capillary Electrophoretic Studies of Acid-Base Properties of Sanguinarine and Chelerythrine Alkaloids. (en)
skos:prefLabel	CE stanovení disociačních konstant (cs) Capillary Electrophoretic Studies of Acid-Base Properties of Sanguinarine and Chelerythrine Alkaloids. Capillary Electrophoretic Studies of Acid-Base Properties of Sanguinarine and Chelerythrine Alkaloids. (en)
skos:notation	RIV/62156489:43210/04:00000829!RIV/2005/MSM/432105/N
http://linked.open.../vavai/riv/strany	141;145
http://linked.open...avai/riv/aktivita	Z
http://linked.open...avai/riv/aktivity	Z(MSM 432100001)
http://linked.open...iv/cisloPeriodika	1
http://linked.open...vai/riv/dodaniDat	2005
http://linked.open...aciTvurceVysledku	Vlčková, Markéta Kubáň, Vlastimil
http://linked.open.../riv/druhVysledku	J - Článek v odborném periodiku
http://linked.open...iv/duvernostUdaju	S - Úplné a pravdivé údaje nepodléhající ochraně podle zvláštních právních předpisů
http://linked.open...titaPredkladatele	Mendelova univerzita v Brně / Agronomická fakulta
http://linked.open...dnocenehoVysledku	556821
http://linked.open...ai/riv/idVysledku	RIV/62156489:43210/04:00000829
http://linked.open...riv/jazykVysledku	eng - angličtina
http://linked.open.../riv/klicovaSlova	alkaloids;capillary electrophoresis;dissociation constants (en)
http://linked.open.../riv/klicoveSlovo	alkaloids capillary electrophoresis dissociation constants
http://linked.open...odStatuVydavatele	NL - Nizozemsko
http://linked.open...ontrolniKodProRIV	[57458D3B2876]
http://linked.open...i/riv/nazevZdroje	Journal of Chromatography A
http://linked.open...in/vavai/riv/obor	CB
http://linked.open...ichTvurcuVysledku	2 (xsd:int)
http://linked.open...cetTvurcuVysledku	3 (xsd:int)
http://linked.open...UplatneniVysledku	2004
http://linked.open...v/svazekPeriodika	1040
http://linked.open...iv/tvurceVysledku	Kubáň, Vlastimil Barták, Jiří Vlčková, Markéta
http://linked.open...n/vavai/riv/zamer	http://linked.opendata.cz/resource/domain/vavai/zamer/MSM%20432100001
issn	0021-9673
number of pages	5 (xsd:int)
http://localhost/t...ganizacniJednotka	43210

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