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Department of Chemistry, Faculty of Science, University of Novi Sad, Trg Dositeja Obradovica 3, 21000 Novi Sad, Serbia





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Abstract The in vitro and in vivo antioxidant activities of different extracts of laurel leaves were studied. Free radical scavenging capacity RSC was evaluated measuring the scavenging activity on the DPPH, NO, O2·- and OH radicals. The effects on lipid peroxidation LP were also evaluated. Experimental results indicate that ethyl acetate extract of leaves has exhibited the largest RSC capacity in neutralization of DPPH, NO, O2·- and OH radicals. The same result was obtained in investigation of extracts impact on LP. The in vivo effects were evaluated on some antioxidant systems activities of GSHPx, LPx, Px, CAT and XOD, and GSH content in the mice liver and blood-hemolysate after treatment with the examined laurel extracts, or in combination with carbon tetrachloride CCl4. On the basis of the results obtained it can be concluded that the examined extracts exhibited a certain protective effect, which is more pronounced on the liver than on blood-hemolysate parameters. The results obtained indicate toxicity of CCl4, probably due to the radicals involved in its metabolism. Combined treatments with CCl4 and the examined extracts showed both positive and negative synergism. Based on the experimental results, the strongest protective effect was shown by the EtOAc extract.

Keywords: Laurus nobilis L.; extracts; free radicals; in vitro experiments; biochemical parameters Laurus nobilis L.; extracts; free radicals; in vitro experiments; biochemical parameters





Autor: Biljana Kaurinovic * , Mira Popovic and Sanja Vlaisavljevic

Fuente: http://mdpi.com/



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