Naslov
Utjecaj radikala sumpora na procese u modelnim lipidnim sustavima
(The influence of sulfur centered radicals on processes in model lipid systems)

Autori
Kranjčec, Lucija

Vrsta, podvrsta i kategorija rada
Ocjenski radovi, diplomski rad, diplomski

Fakultet
Odjel za kemiju

Mjesto
Osijek

Datum
09.12

Godina
2021

Stranica
56

Mentor
Matasović, Brunislav ; Tartaro Bujak, Ivana

Ključne riječi
lipidna peroksidacija ; geometrijska izomerizacija ; micele ; linolna kiselina ; γ−zračenje ; sumporovodik
(lipid peroxidation ; geometric isomerization ; micelles ; linoleic acid ; γ−radiation ; hydrogen sulfide)

Sažetak
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.

Izvorni jezik
Hrvatski

Znanstvena područja
Kemija

POVEZANOST RADA