Antioxidant Activity of Purslane (Portulaca oleracea L.) Seed Hydro-alcoholic Extract on the Stability of Soybean Oil | ||
| Journal of Agricultural Science and Technology | ||
| Article 8, Volume 17, Issue 6, 2015, Pages 1473-1480 PDF (202.17 K) | ||
| Authors | ||
| S. R. Jalali Mousavi1; R. Niazmand* 2; M. Shahidi Noghabi2 | ||
| 1Department of Food Science and Technology, Islamic Azad University, Damghan Branch, Islamic Republic of Iran. | ||
| 2Department of Food Chemistry, Research Institute of Food Science and Technology, Mashhad, Islamic Republic of Iran. | ||
| Abstract | ||
| In this study, the antioxidant activity and protective effects of Purslane Seed Water-Methanolic Extract (PSWME) in stabilizing SoyBean Oil (SBO) were tested. DPPH radical scavenging activity of PSWME at different concentrations varied significantly (P< 0.05), ranging from 15.41% to 79.06%. Total phenolic content in PSWME was 121.09 mg Gallic Acid Equivalent (GAE) kg-1 dw. The protective effects of PSWME at the level of 100 mg L-1 in stabilizing SBO were tested and compared to BHT in a concentration of 100 mg L-1 by measuring Peroxide Value (PV) and ThioBarbituric Acid (TBA) during accelerated storage (at 60°C). The results showed that PSWME, similar to BHT, reduced the formation of primary and secondary oxidation products in SBO. Therefore, the use of this extract as a natural antioxidant is recommended to prevent the oxidation of vegetable oils. | ||
| Keywords | ||
| DPPH; Oven test; Oxidation; phenolic compounds | ||
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