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undergraduate thesis
Određivanje pKa vrijednosti odabranih spojeva prisutnih u valerijani, Valeriana officinalis L.
2022. urn:nbn:hr:182:415790
Čavlek, Aleksandra
Josip Juraj Strossmayer University of Osijek
Department of Chemistry
Department of Analytical, Organic and Applied Chemistry

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Čavlek, A. (2022). Određivanje pKa vrijednosti odabranih spojeva prisutnih u valerijani, Valeriana officinalis L. (Undergraduate thesis). Osijek: Josip Juraj Strossmayer University of Osijek, Department of Chemistry. Retrieved from https://urn.nsk.hr/urn:nbn:hr:182:415790

Čavlek, Aleksandra. "Određivanje pKa vrijednosti odabranih spojeva prisutnih u valerijani, Valeriana officinalis L.." Undergraduate thesis, Josip Juraj Strossmayer University of Osijek, Department of Chemistry, 2022. https://urn.nsk.hr/urn:nbn:hr:182:415790

Čavlek, Aleksandra. "Određivanje pKa vrijednosti odabranih spojeva prisutnih u valerijani, Valeriana officinalis L.." Undergraduate thesis, Josip Juraj Strossmayer University of Osijek, Department of Chemistry, 2022. https://urn.nsk.hr/urn:nbn:hr:182:415790

Čavlek, A. (2022). 'Određivanje pKa vrijednosti odabranih spojeva prisutnih u valerijani, Valeriana officinalis L.', Undergraduate thesis, Josip Juraj Strossmayer University of Osijek, Department of Chemistry, accessed 23 January 2025, https://urn.nsk.hr/urn:nbn:hr:182:415790

Čavlek A. Određivanje pKa vrijednosti odabranih spojeva prisutnih u valerijani, Valeriana officinalis L. [Undergraduate thesis]. Osijek: Josip Juraj Strossmayer University of Osijek, Department of Chemistry; 2022 [cited 2025 January 23] Available at: https://urn.nsk.hr/urn:nbn:hr:182:415790

A. Čavlek, "Određivanje pKa vrijednosti odabranih spojeva prisutnih u valerijani, Valeriana officinalis L.", Undergraduate thesis, Josip Juraj Strossmayer University of Osijek, Department of Chemistry, Osijek, 2022. Available at: https://urn.nsk.hr/urn:nbn:hr:182:415790

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TitleOdređivanje pKa vrijednosti odabranih spojeva prisutnih u valerijani, Valeriana officinalis L.
Title (english)Prediction of pKa values of selected compounds present in valerian, Valeriana officinalis L.
AuthorAleksandra Čavlek
MentorAna Amić (mentor)
GranterJosip Juraj Strossmayer University of Osijek
Department of Chemistry
(Department of Analytical, Organic and Applied Chemistry)
Osijek
Defense date and country2022-09-28, Croatia
Scientific / art field,
discipline and subdiscipline		NATURAL SCIENCES
Chemistry
Applied Chemistry
Abstract
Valerijana, Valeriana officinalis L., zelena je trajnica koja se koristi u liječenju različitih stanja i bolesti čovjeka još od antičke Grčke i Rima. Može narasti do 150 cm u visinu, listovi su najčešće smješteni na višim dijelovima biljke. Cvjetovi valerijane mogu biti bijeli ili ružičasti, dok je plod valerijane maleni oraščić veličine do 0,5 cm. U cijeloj biljci valerijane do sada je identificirano oko 150 spojeva, ali još uvijek nije u potpunosti utvrđeno njihovo djelovanje. Budući da spojevi još nisu u potpunosti istraženi, pretpostavka je da se djelovanje preparata od valerijane temelji na sinergističkom učinku pojedinih spojeva ove biljke. Valerijana se danas najčešće koristi kod problema s nesanicom te nervozom. pKa vrijednost je logaritamska vrijednost konstante disocijacije. Pomoću pKa vrijednosti može se odrediti ili modificirati ponašanje tvari koje nas zanima, a pKa se može odrediti eksperimentalno i računalno. U ovom radu, računalno je određena pKa odabranih spojeva valerijane te je utvrđena promjena sumarnog naboja i protoniranih stanja u ovisnosti o pH medija za svaki ispitani spoj.
Abstract (english)
Valerian, Valeriana officinalis L., is a green perennial plant used in the treatment of various conditions and illnesses since ancient Greece and Rome. It can grow up to 150 cm in height, the leaves are usually in the higher part of the plant. Valerian flowers can be white or pink while the fruit is in the form of a little nut and has a size up to 0.5 cm. Around 150 different compounds have been discovered in the valerian plant, but their activity has not been fully elucidated yet. Since these compounds have not been fully investigated yet, the effect of the valerian preparations is assumed to be a result of synergistic effect of individual components of this plant. Nowadays, valerian is commonly used for insomnia and anxiety treatment. pKa value is the logarithmic value of the dissociation constant. pKa may help in determining or modifying the activity of studied compound, and is determined experimentally and computationally. In this thesis, pKa of selected compounds found in valerian was computationally determined. Also, net charges and protonation charges vs pH were analysed for chosen compounds.
Keywords
Keywords (english)
Languagecroatian
URN:NBNurn:nbn:hr:182:415790
Study programmeTitle: Chemistry
Study programme type: university
Study level: undergraduate
Academic / professional title: sveučilišni/a prvostupnik/prvostupnica (baccalaureus/baccalaurea) kemije (sveučilišni/a prvostupnik/prvostupnica (baccalaureus/baccalaurea) kemije)
Type of resourceText
File originBorn digital
Access conditionsOpen access
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Created on2022-11-02 11:41:54