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master's thesis
Utjecaj radikala sumpora na procese u modelnim lipidnim sustavima
Osijek: Josip Juraj Strossmayer University of Osijek, Department of Chemistry, 2021. urn:nbn:hr:182:699982
Kranjčec, Lucija
Josip Juraj Strossmayer University of Osijek
Department of Chemistry
Department of General, Inorganic and Physical Chemistry and Methodology of Chemistry

Institutional repository: Repository of the Department of Chemistry, Osijek

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Kranjčec, L. (2021). Utjecaj radikala sumpora na procese u modelnim lipidnim sustavima (Master's thesis). Osijek: Josip Juraj Strossmayer University of Osijek, Department of Chemistry. Retrieved from https://urn.nsk.hr/urn:nbn:hr:182:699982

Kranjčec, Lucija. "Utjecaj radikala sumpora na procese u modelnim lipidnim sustavima." Master's thesis, Josip Juraj Strossmayer University of Osijek, Department of Chemistry, 2021. https://urn.nsk.hr/urn:nbn:hr:182:699982

Kranjčec, Lucija. "Utjecaj radikala sumpora na procese u modelnim lipidnim sustavima." Master's thesis, Josip Juraj Strossmayer University of Osijek, Department of Chemistry, 2021. https://urn.nsk.hr/urn:nbn:hr:182:699982

Kranjčec, L. (2021). 'Utjecaj radikala sumpora na procese u modelnim lipidnim sustavima', Master's thesis, Josip Juraj Strossmayer University of Osijek, Department of Chemistry, accessed 17 January 2025, https://urn.nsk.hr/urn:nbn:hr:182:699982

Kranjčec L. Utjecaj radikala sumpora na procese u modelnim lipidnim sustavima [Master's thesis]. Osijek: Josip Juraj Strossmayer University of Osijek, Department of Chemistry; 2021 [cited 2025 January 17] Available at: https://urn.nsk.hr/urn:nbn:hr:182:699982

L. Kranjčec, "Utjecaj radikala sumpora na procese u modelnim lipidnim sustavima", Master's thesis, Josip Juraj Strossmayer University of Osijek, Department of Chemistry, Osijek, 2021. Available at: https://urn.nsk.hr/urn:nbn:hr:182:699982

Metadata
TitleUtjecaj radikala sumpora na procese u modelnim lipidnim sustavima
Title (english)The influence of sulfur centered radicals on processes in model lipid systems
AuthorLucija Kranjčec
MentorBrunislav Matasović (mentor)
Committee memberMarija Jozanović (predsjednik povjerenstva)
Committee memberBrunislav Matasović (član povjerenstva)
Committee memberMirela Samardžić (član povjerenstva)
GranterJosip Juraj Strossmayer University of Osijek
Department of Chemistry
(Department of General, Inorganic and Physical Chemistry and Methodology of Chemistry)
Osijek
Defense date and country2021-12-09, Croatia
Scientific / art field,
discipline and subdiscipline		NATURAL SCIENCES
Chemistry
Inorganic Chemistry
Abstract
Lipidna peroksidacija i geometrijska izomerizacija su biološki važni procesi koji mogu imati štetan utjecaj na organizme. Cilj ovog rada bio je ispitati produkte lipidne peroksidacije i cis, trans−izomerizacije u modelnom sustavu micela, priređenom iz linolne kiseline (LH) i tenzida, uz inicijaciju γ−zračenjem u različitim eksperimentalnim uvjetima. U radu je korišten Na2S kao prekursor za generiranje H2S odnosno HS− u modelnim sustavima LH. Ispitani su utjecaj pH, brzina doze zračenja, koncentracija Na2S u uvjetima ravnoteže sa zrakom te u anaerobnim uvjetima. Pokazano je da hidroperoksidi i trans−izomeri LH nastaju i u oksidacijskim uvjetima. U anaerobnim uvjetima izomerizacija je predominantan proces pri čemu uz nestajanje cis−konfiguracije dvostruke veze, istovremeno nastaju i dva mono trans− i di trans−izomera. Izmjeren je hidrodinamički promjer micela koji se smanjuje s porastom pH, a zeta potencijal ima sve negativniji naboj.
Abstract (english)
Lipid peroxidation and cis, trans−isomerization are biologically important processes that can have deleterious effects on organisms. The aim of this study was to investigate the products of lipid peroxidation and cis, trans−isomerization in a model system of micelles prepared from linoleic acid (LH) and surfactant, induced by gamma radiation under different experimental conditions. Na2S was used as a precursor for the generation of H2S/HS− in the model LH system. The influence of pH, radiation dose rate, Na2S concentration under air equilibrium conditions and under anaerobic conditions were investigated. It has been shown that under oxidative conditions hydroperoxides and trans−isomers of LH are also formed. Under anaerobic conditions, isomerization is the predominant process with the disappearance of the cis−configuration of the double bond and the simultaneous formation of two mono trans and di trans−isomers. It has been measured that the hydrodynamic diameter of the micelle decreases with increasing pH and the zeta potential becomes increasingly negatively charged.
Keywords
Keywords (english)
Languagecroatian
URN:NBNurn:nbn:hr:182:699982
Study programmeTitle: Graduate University Study of Chemistry; research program; specializations in: Research program
Course: Research program
Study programme type: university
Study level: graduate
Academic / professional title: magistar/magistra kemije (magistar/magistra kemije)
Type of resourceText
File originBorn digital
Access conditionsOpen access
Terms of useLicence In copyright icon
Created on2022-08-08 07:40:36