Rezamand-Parsayi, F. (2013) Evaluation and Comparison of Antioxidant Activity of Juglans regia L. Leaf and Kernel Using Ultrasonic Waves. Masters thesis, University of Zabol.
|
Text
Evaluation and Comparison of Antioxidant Activity of Juglans regia L. Leaf and Kernel.pdf Download (159kB) | Preview |
Abstract
The effects of free radicals and active oxygen species on biological molecules have created very problems in recent years. These compounds are known to be responsible for oxidative deterioration of vital molecules such as proteins, lipids and nucleic acids. Antioxidants protect biological systems against these factors and have been suggested to play a preventing role in human health. In the present study, the antioxidant activity of water and alcoholic extracts of walnut leaves and kernel was determined. The extracts obtained by ultrasonic and traditional methods.2, 2-Diphenyl- -Picrylhydrazyl (DPPH) was added to the extracts and the antioxidant activity was determined by amount of reagent Consumption. For tracking the progress of the reaction, high performance liquid chromatography (HPLC) was used. In order to optimize the extraction conditions, effective parameters such as extracting solvent, temperature and time were investigated. Finally, the results were analyzed by SPSS software. Analysis of variance (ANOVA) suggests that there are significant differences between extraction methods (P <0.05).
| Item Type: | Thesis (Masters) |
|---|---|
| Uncontrolled Keywords: | Antioxidant activity, Juglans regia L., Ultrasonic assisted extraction, DPPH |
| Subjects: | Q Science > QD Chemistry S Agriculture > SB Plant culture |
| Depositing User: | admin admin1 admin2 |
| Date Deposited: | 14 May 2016 08:24 |
| Last Modified: | 14 May 2016 08:27 |
| URI: | http://eprints.uoz.ac.ir/id/eprint/574 |
Actions (login required)
 |
View Item |
