Zobrazeno 1 - 10
of 119
pro vyhledávání: '"Jan Krzek"'
Publikováno v:
Journal of Functional Foods, Vol 5, Iss 4, Pp 1576-1581 (2013)
Schisandra chinensis is the herb of sill growing interest since it executes many beneficial nutritional and medicinal effects. In this manuscript the separation, identification and quantification of biologically active lignans, namely: schisandrol A
Externí odkaz:
https://doaj.org/article/6adc6a737f204972a9020b6ee735ae23
Autor:
Dariusz Motyl, Paweł Żmudzki, Agata Kryczyk, Barbara Żuromska-Witek, Urszula Hubicka, Jan Krzek
For the determination of fluconazole (FLU) oxidation stability under permanganate treatment at the acidic pH, a sensitive, reproducible, and stability-indicating ultra-performance liquid chromatographyñmass spectrometry (UPLC/MS) method was develope
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::666efe8f88f905c61b01d61a6d3f9f00
https://ruj.uj.edu.pl/xmlui/handle/item/92782
https://ruj.uj.edu.pl/xmlui/handle/item/92782
Autor:
Irena Smaga, Jan Krzek, Edmund Przegaliński, Małgorzata Filip, Andrzej Moniczewski, Joanna Pera, Ewa Niedzielska, Maciej Gawlik
Publikováno v:
Pharmacological Reports. 67:569-580
The pathophysiology of psychiatric diseases, including depression, anxiety, schizophrenia and autism, is far from being fully elucidated. In recent years, a potential role of the oxidative stress has been highlighted in the pathogenesis of neuropsych
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::f2fc9c93c5cf9190d43e332f9502701c
https://doi.org/10.1016/j.pharep.2014.12.015
https://doi.org/10.1016/j.pharep.2014.12.015
Publikováno v:
Biomedical Chromatography. 29:1759-1768
The lipophilicity (RM0) and specific hydrophobic surface area for the representatives of four generation cephalosporins have been determined by reversed-phase thin-layer chromatography, and the effect of different mobile-phase modifiers (such as meth
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::8026606d98348160a3edd579ff9d388c
https://doi.org/10.1002/bmc.3490
https://doi.org/10.1002/bmc.3490
Publikováno v:
Journal of Liquid Chromatography & Related Technologies. 38:1113-1120
TLC-densitometric method was developed for the identification and quantitative determination of selected fluoroquinolones. Silica gel TLC 60 F254 plates were used as the stationary phase. For the separation of examined compounds the suitability of th
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::837e5521e0d0304a8d8fb7e44b97ec06
https://doi.org/10.1080/10826076.2015.1028290
https://doi.org/10.1080/10826076.2015.1028290
Publikováno v:
Acta Chromatographica. 26:657-670
The purpose of this work was to develop a TLC-densitometric method for simultaneous identification and quantitative determination of azithromycin, clarithromycin, roxithromycin, spiramycin, and troleandomycin. The method was developed on TLC aluminiu
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::0cd504c39e04bd2de9d11b5252e2c79e
https://doi.org/10.1556/achrom.26.2014.4.8
https://doi.org/10.1556/achrom.26.2014.4.8
Publikováno v:
Biomedical Chromatography. 29:388-395
A rapid, accurate and sensitive thin-layer chromatography (TLC) method with densitometric detection has been developed and validated for the determination of cefepime in pharmaceuticals. Chromatographic separation was achieved on a silica gel TLC F25
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::2317ed29f022e6dc5259668863635b6b
https://doi.org/10.1002/bmc.3288
https://doi.org/10.1002/bmc.3288
Autor:
Urszula Matoga, Anna Kwiecień, Paweł Żmudzki, Maciej Długosz, Krzysztof Szczubiałka, Maria Nowakowska, Jan Krzek
Publikováno v:
Anal. Methods. 6:6414-6423
The purpose of this work was to study two methods of degradation of roxithromycin: acidic hydrolysis and photocatalytic degradation under illumination with near-UV light in the presence of the TiO2 photosensitizer. For acidic degradation studies a TL
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::f48566534bd1ff39a86300bd0e91b1a5
https://doi.org/10.1039/c4ay00708e
https://doi.org/10.1039/c4ay00708e
Publikováno v:
Acta Chromatographica. 25:465-481
Summary An effect of ultraviolet A (UVA) radiation on fluoxetine stability in solid phase with and without the presence of selected metal ions was studied using the chromatographic-densitometric method. Silica gel TLC F254 plates were used as the sta
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::f4474c8cecdb4c90b29da426aa0a7012
https://doi.org/10.1556/achrom.25.2013.3.5
https://doi.org/10.1556/achrom.25.2013.3.5
Publikováno v:
Journal of Liquid Chromatography & Related Technologies. 35:1325-1335
A chromatographic-densitometric method was developed for determination of tolperisone hydrochloride and its impurities. Silica gel TLCF 254 plates were used as the stationery phase and cyclohexane-1,4 dioxane-isopropanol–ethanol-glacial acetic acid
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::7b744122e65fca24c74f82fca3fd3d1f
https://doi.org/10.1080/10826076.2012.675862
https://doi.org/10.1080/10826076.2012.675862