CE-MS separation and identification of standard nucleotides
Butnariu, Maria; Šolínová, Veronika; Koval, Dušan
2022 - English Keywords: capillary electrophoresis; mass spectrometry; nucleotides Available at various institutes of the ASCR CE-MS separation and identification of standard nucleotides

Butnariu, Maria; Šolínová, Veronika; Koval, Dušan
Ústav organické chemie a biochemie, 2022

Interaction of triazole fungicides in agriculture
Kovač, Ishak; Jakl, M.; Šolínová, Veronika; Kašička, Václav; Jaklová Dytrtová, Jana
2022 - English Keywords: capillary electrokinetic chromatography; triazole fungicides; quantitative analysis Available at various institutes of the ASCR Interaction of triazole fungicides in agriculture

Kovač, Ishak; Jakl, M.; Šolínová, Veronika; Kašička, Václav; Jaklová Dytrtová, Jana
Ústav organické chemie a biochemie, 2022

Analysis, separation and characterization of dityrosine diastereomers by capillary electrophoresis
Šolínová, Veronika; Niederhafner, Petr; Šafařík, Martin; Šebestík, Jaroslav; Kašička, Václav
2022 - English Keywords: capillary electrophoresis; diastereomer separation; dityrosine Available at various institutes of the ASCR Analysis, separation and characterization of dityrosine diastereomers by capillary electrophoresis

Šolínová, Veronika; Niederhafner, Petr; Šafařík, Martin; Šebestík, Jaroslav; Kašička, Václav
Ústav organické chemie a biochemie, 2022

Chiral capillary electrophoresis with diquats as both passive and active players in enantioseparation games
Kašička, Václav; Bílek, Jan; Koval, Dušan; Sázelová, Petra; Talele, Harish Ramesh; Severa, Lukáš; Reyes Gutierrez, Paul Eduardo; Teplý, Filip
2022 - English Keywords: chiral capillary electrophoresis; diquats; enantioseparation Available at various institutes of the ASCR Chiral capillary electrophoresis with diquats as both passive and active players in enantioseparation games

Kašička, Václav; Bílek, Jan; Koval, Dušan; Sázelová, Petra; Talele, Harish Ramesh; Severa, Lukáš; Reyes Gutierrez, Paul Eduardo; Teplý, Filip
Ústav organické chemie a biochemie, 2022

Curcumin oligomers and their stability in the gas phase investigated by electrospray ionization mass spectrometry
Jaklová Dytrtová, Jana; Jakl, Michal; Jakl, M.
2022 - English Keywords: curcumin; electrospray ionization; mass spectrometry. Available at various institutes of the ASCR Curcumin oligomers and their stability in the gas phase investigated by electrospray ionization mass spectrometry

Jaklová Dytrtová, Jana; Jakl, Michal; Jakl, M.
Ústav organické chemie a biochemie, 2022

Characterization of Ca2+ binding properties of human ameloblastin I and II isoforms and ameloblastin C-term proteins by capillary electrophoresis
Sázelová, Petra; Vetýšková, Veronika; Boušová, Kristýna; Vondrášek, Jiří; Kašička, Václav
2022 - English Keywords: calcium ion; capillary electrophoresis; human ameloblastin Available at various institutes of the ASCR Characterization of Ca2+ binding properties of human ameloblastin I and II isoforms and ameloblastin C-term proteins by capillary electrophoresis

Sázelová, Petra; Vetýšková, Veronika; Boušová, Kristýna; Vondrášek, Jiří; Kašička, Václav
Ústav organické chemie a biochemie, 2022

Study of complexation of 5-phenylazopyrimidines with β-cyclodextrin by affinity capillary electrophoresis
Štěpánová, Sille; Procházková, Eliška; Hruzíková, Anna; Čechová, Lucie; Janeba, Zlatko; Kašička, Václav
2022 - English Keywords: affinity capillary electrophoresis; β-cyclodextrin; 5-phenylazopyrimidines Available at various institutes of the ASCR Study of complexation of 5-phenylazopyrimidines with β-cyclodextrin by affinity capillary electrophoresis

Štěpánová, Sille; Procházková, Eliška; Hruzíková, Anna; Čechová, Lucie; Janeba, Zlatko; Kašička, Václav
Ústav organické chemie a biochemie, 2022

A new method for double bond characterization in lipids by ultraviolet photodissociation mass spectrometry
Rumlová, Barbora; Strmeň, T.; Cvačka, Josef
2021 - English Lipids are structurally diverse biomolecules with vital functions in biological systems. Some of these functions are closely associated with the specific location of the carbon-carbon double bond in the lipid acyl chains. The chain length and the number of unsaturated carbon-carbon bonds can be determined using conventional MS/MS-based structural elucidation methods employing low or higher energy collision-induced dissociation. However, these dissociation techniques do not provide more subtle structural details, for example, the position of unsaturated bonds. Another type of activation method – ultraviolet photodissociation can be used for this purpose. In this study, a new method for characterization of double bond location in lipids acyl chain was developed using 193 nm ultraviolet photodissociation implemented on Orbitrap Fusion Lumos mass spectrometer. This approach is based on the derivatization of the double bond with bis-(5-iodo-[2]pyridyl)-disulfide, subsequent specific cleavages provide a unique diagnostic pair bearing information about the double bond position. Keywords: double bond; lipids; mass spectrometry; ultraviolet photodissociation Fulltext is available at external website. A new method for double bond characterization in lipids by ultraviolet photodissociation mass spectrometry

Lipids are structurally diverse biomolecules with vital functions in biological systems. Some of these functions are closely associated with the specific location of the carbon-carbon double bond in ...

Rumlová, Barbora; Strmeň, T.; Cvačka, Josef
Ústav organické chemie a biochemie, 2021

Copper complexes with triazoles
Jaklová Dytrtová, Jana; Jakl, M.
2020 - English Triazoles are artificial chemicals used as fungicides as well as for pharmaceutical treatment. However, their reactivity is highly influenced by the presence of other chemicals. Especially, the presence of copper cations changes the reactivity of triazole by theoretically unexpected way. We have studied the interactions of the triazole ring with copper cations to help explain the reactivity of triazoles as a group. Keywords: triazoles; Cu(I); Cu(II); mass spectrometry; ESI-MS; complexes Available at various institutes of the ASCR Copper complexes with triazoles

Triazoles are artificial chemicals used as fungicides as well as for pharmaceutical treatment. However, their reactivity is highly influenced by the presence of other chemicals. Especially, the ...

Jaklová Dytrtová, Jana; Jakl, M.
Ústav organické chemie a biochemie, 2020

Separation of triazoles from real samples with capillary electrophoresis
Kovač, Ishak; Jakl, M.; Šolínová, Veronika; Jaklová Dytrtová, Jana
2020 - English The CE has become one of the advantageous tools in fungicides analysis in complex matrices due to its simplicity and separation efficiency. The separation of a group of thee triazole (i.e. penconazole, tebuconazole, and cyproconazole) fungicides was achieved with CD-MEKC with anionic Sg-CD as a selector at pH=4,8. The background electrolyte consisted of TRIS phosphate buffer (50 mmol/L) and 15 mmol/L SDS. The separation was performed on uncoated fused silica capillary with 500/425 mm (total/effective) length under -15 kV separation voltage. Achieved LOD values with this method were: 0,73, 1,88, 0,60, 1,18 (umol/L) for penconazole, tebuconazole, cyproconazole A and B respectively. Keywords: capillary electrophoresis; penconazole; tebuconazole; cyproconazole; γ-cyclodextrin Available at various institutes of the ASCR Separation of triazoles from real samples with capillary electrophoresis

The CE has become one of the advantageous tools in fungicides analysis in complex matrices due to its simplicity and separation efficiency. The separation of a group of thee triazole (i.e. ...

Kovač, Ishak; Jakl, M.; Šolínová, Veronika; Jaklová Dytrtová, Jana
Ústav organické chemie a biochemie, 2020