Published in Scientific Works. Series C. Veterinary Medicine, Vol. LXII, Issue 1
Written by Nicoleta Corina PREDESCU, Valentin NICORESCU, Carmen PETCU, Georgeta STEFAN, Camelia PAPUC
The ethanolic extracts of hawthorn (Crataegus monogyna) and dog-rose (Rosa canina) were found to contain polyphenols with antioxidant activity. The aim of this study was to assess the antioxidant properties of hawthorn and dog-rose polyphenols in linoleic acid emulsion model system, comparatively with synthetic antioxidant BHA. Polyphenols and BHA were incorporated in a linoleic acid emulsion at the final concentration of 100 ppm and then incubated at 80°C for 7 days. For determination of the progress of oxidation processes, primary and secondary peroxidation products levels were evaluated at every 24 hours. Hawthorn and dog-rose polyphenols inhibited the formation of lipid hydroperoxides, conjugated dienes and thiobarbituric acid reactive substances. The protective effect of hawthorn and dog-rose polyphenols was superior to the one of BHA synthetic antioxidant.
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