Abstract: Some of the plants and their extracts are added to the diet not only aromatic but also as a preservative. This research was performed to determine antioxidant activity of ethanolic and water extract Rosmarinusofficinalis on soybean oil. Antioxidant capacity of extracts of Rosmarinus officinalis was assessed by 1,1 diphenyl-2- picrylhydrazyl (DPPH) and Beta- carotene. Peroxide values (PVs) and thiobarbitoric acidreactive substances (TBARs) be evaluated different concentrations (0,200, 400 and 800 ppm) of ethanolic, water extracts and β hydroxyl toluene (BHT, 100 ppm) that added on soybean oil and incubated for 35 days at 65°C. Peroxide values (PVs) and thiobarbitoric acid-reactive substances (TBARs) levels were measured every week during the time period of the study.Values were compared among groups in each incubation time using ANOVA test. Results showed that DPPH and β- carotene- linolic acid assay findings on the Rosmarinus officinalis ethanolic and water extract were lower than of synthetic antioxidant, BHT. Therefore, during the incubation time, Rosmarinus officinalis ethanolic and water extracts lowered PVs and TBARs levels when compared to the control (p<0.001).
کلید واژگان :Rosmarinus officinalis, Extract, Antioxidant activity and Soybean oil
ارزش ریالی : 600000 ریال
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