Antioxidative effects of Iranian Urtica dioica L. extracts on the oxidation of sunflower oil

Dynamic Chiropractic

Ashkan Jebelli Javan¹  Sahar Ghaffari Khaligh²  Mehdi Monfared³  Abolfazl Kamkar⁴ 

[1] Department of Biochemistry, School of Veterinary Medicine, University of Tehran, Tehran, Iran.;Department of Food Hygiene, School of Veterinary Medicine, Semnan University, Semnan, Iran.;Department of Food Hygiene, School of Veterinary Medicine, University of Tehran, Tehran, Iran.;Faculty of Veterinary Medicine, School of Veterinary Medicine, University of Tehran, Tehran, Iran.

关键词: Urtica dioica;    antioxidant activity;    sunflower oil emulsion;    extract.;   

DOI  :  

学科分类：医学（综合）

来源: MPA Media

【 摘 要 】

The aim of the present study was to evaluate antioxidative effects of water and ether extracts ofIranianUrtica dioica, during its pre and post floweringon vegetable oil during storage. Different concentration of water and ether extracts (0, 200, 400, 600, 800 and 1000 ppm) and β-Hydroxy toluene (BHT; 200 ppm) were added to sunflower oil emulsion in the presence of cupric ions and incubated for 7 days at 60°C.Peroxide values (PVs)and thiobarbituric acid reacting substances (TBARS) levels were measured eachday up to day seven. Furthermore, antioxidant capacity of the extracts was determined using DPPH and β-Carotene linoleic acid methods.Values were compared among groups in each incubation time points using 1-way ANOVA.Results showed that DPPH and β-Carotene-linoleic acid assay findings on theU. dioicaextracts were comparable to those found for BHT. Furthermore, in all incubation time points,U. dioicaextracts lowered PVs and TBARS levels significantly when compared with the control (p<0.001). In this respect, the water extract was more potent than the ether extract. In addition, antioxidant properties of the water extracts in post flowering stage were similar to those of BHT in the same concentration (200 ppm). It seems that water extract ofthe post floweringU. dioicais a potent antioxidant for oil and oily products.

【 授权许可】

Unknown