Naslov
Oxidation kinetics of Iron(II) in Lipid Peroxidation Processes

Autori
Mihaljević, Branka

Vrsta, podvrsta i kategorija rada
Sažeci sa skupova, neobjavljeni rad, znanstveni

Skup
COST ACTION CM0603 “Free Radicals in Chemical Biology”, WG1 meeting, 2008

Mjesto i datum
Bologna, Italija, 11.02.2008. - 12.02.2008

Vrsta sudjelovanja
Predavanje

Vrsta recenzije
Nije recenziran

Ključne riječi
Lipid hydroperoxide; analytical methods; ferric-thiocyanate method

Sažetak
The iron-mediated lipid peroxidation has been evaluated by focusing the investigations in two directions: (a) measuring the concentrations of oxidation products of lipids, and (b) investigation based on evaluation of susceptibility of lipids to oxidation upon their exposure to a source of free radicals. With the main aim to develop a reliable quantitative method for the measurement of peroxidation for in lipidic material, we produced a method of analysis, which has appeared applicable to different interdisciplinary studies of peroxidation of lipids. We have studied peroxidation of unsaturated fatty acids (LH) catalyzed by ferrous ions in buffering condition where autoxidation of Fe2+ and hydroxyl radicals generation does not occur. In these conditions, Fe2+ is oxidized only with preformed hydroperoxides of unsaturated fatty acids (LOOH) to form radical propagators, alkoxyl- and peroxyl- radicals. It is important to consider this process under conditions other than normal physiological ones since, in comparison with normal tissue ; tumors have relatively low pH levels. The lipid peroxidation was followed by determination of concentrations of LOOH by measurements of UV-diene conjugation and by the ferric thiocyanate method.

Izvorni jezik
Engleski

Znanstvena područja
Kemija

POVEZANOST RADA