Analysis of free radicals scavenging activity of morin 2' – 0- phenoxide anion
2012
Marković, Z., State University of Novi Pazar (Serbia) | Milenković, D., Bioengineering Research and Devepoment Center, Kragujevac (Serbia) | Đorović, J., Bioengineering Research and Devepoment Center, Kragujevac (Serbia) | Dimitrić-Marković, J.M., Faculty of Physical Chemistry, Belgrade (Serbia) | Stepanović, V., Ruđer Bošković Institute, Zagreb (Croatia). Division of Molecular Medicine, Laboratory for Epigenomics | Lučić, B., Ruđer Bošković Institute, Zagreb (Croatia). NMR Center | Amić, D., Faculty of Agriculture, Osijek (Croatia)
Reaction enthalpies related to mechanism of free radical scavenging activity of morin phenoxide anion 2' – 0- (dominant species at physiological pH of 7.4) were calculated by DFT method in gas-phase, water, benzene and DMSO. Thermodynamically favored mechanism depends on the polarity of reaction media: in polar solvents (water and DMSO) the SPLET (sequential proton loss electron transfer) mechanism is preferred, and in non-polar benzene (and in gas-phase0 the HAT (hydrogen atom transfer) mechanism is responsible for the free radical scavenging activity of morin phenoxide anion.
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