Biological synthesis of silver nanoparticles and evaluation of antibacterial and antifungal properties of silver and copper nanoparticles

Authors : AZAM JAFARI, LATIFEH POURAKBAR, KHALIL FARHADI, Lida MOHAMMAD GHOLIZAD, YOBERT GOOSTA

Pages : 556-561

Doi:10.3906/biy-1406-81

View : 13 | Download : 6

Publication Date : 2015-12-01

Article Type : Research Paper

Abstract :There is increasing attention being paid to metallic nanoparticles because of their intensive applications in different areas of science such as medicine, chemistry, agriculture, and biotechnology. In addition, there has been growing interest in using environmentally friendly methods of synthesizing nanoparticles without making or using substances risky to the environment and human health. Biological methods for the synthesis of nanoparticles have been considered as possible ecofriendly alternatives to chemical synthesis. In the present study, biosynthesis and characterization of silver nanoparticles insert ignore into journalissuearticles values(SNPs); using marshmallow flower insert ignore into journalissuearticles values(Althaea officinalis L.);, thyme insert ignore into journalissuearticles values(Thymus vulgaris L.);, and pennyroyal insert ignore into journalissuearticles values(Mentha pulegium L.); leaf extracts is reported for the first time. Copper nanoparticles insert ignore into journalissuearticles values(CuNPs); were formed by reduction of CuCl2 with L-ascorbic acid. The antibacterial and antifungal effects of SNPs and CuNPs in comparison with silver nitrate insert ignore into journalissuearticles values(AgNO3); and copper chloride insert ignore into journalissuearticles values(CuCl2); insert ignore into journalissuearticles values(respective nanoparticle constrictive salts); and synthetic antibiotics and fungicides were studied. Fungi insert ignore into journalissuearticles values(A. flavus and P. chrysogenum); and bacteria insert ignore into journalissuearticles values(E. coli and S. aureus); showed clear hypersensitivity to silver and copper nanoparticles, and the effects of SNPs were more notable than those of CuNPs. Data analysis showed that copper chloride and silver nitrate had a lower inhibitory effect in their nanoparticles, especially against the tested fungi.
Keywords : Metallic nanoparticles, antifungal, antibacterial, Althaea officinalis, Thymus vulgaris, Mentha pulegium, plant extract