M.A. Thesis:

Green synthesis of silver nanoparticles using seeds of Foeniculum vulgare equous extract and study on its antioxidant activity

Silver nanoparticles are of interest for biological and medical applications. But in chemical methods, some toxic reactants remain that are in contrast with principles of green chemistry. Then a variety of biological systems are used. But these systems due to high supply and maintenance costs are used lower. Plants and crops as renewable resources cheap have been used to produce bio regarded nanomaterials. Plants with secondary compounds such as phenols, flavonoids could use for reduction chemical reactions. In this project, silver nanoparticles synthesized using aqueous extracts of cumin. Because synthesis of nanoparticles in this study is based on reduction, reducing power (antioxidant) for extracts of the plant was evaluated using DPPH method. Also, the phenolic content of the extracts was measured. In addition, silver nanoparticles was characterized by ultraviolet-visible spectroscopy, particle size analysis and transmission electron microscopy technique. Different parameters such as pH, concentration of extract, concentration of silver salt and reaction time considered on the synthesis of nanomaterials. The study consists of four chapters respectively. In the first chapter general botany profile major secondary compounds in plant has been discussed. Also, in this chapter, nanotechnology and nanoparticles have been studied by chemical and biological reactions. In the second chapter, a review of research in the field of green synthesis has been done. The experimental part of the study is the third chapter. Finally, result and conclusion discussed in chapter four.

Keywords: Fennel, silver nanoparticles, activities Nty¬Aksydany