Green synthesis of Silver Nanoparticles using the extract of Rheum ribes and evaluating their antifungal activity against some of Candida sp.

The synthesis of nanoparticles by green method using plant extracts and its application in the biomedical consider a prosperous field of research. Therefore, in this paper, Rheum plant was used as a reducing agent in synthesis silver nanoparticles and testing its effectiveness as anti-fungal. Silver Nanoparticles have been characterized using different techniques such as UV-visible spectroscopy, X-ray diffraction, Fourier transforms infrared spectroscopy and transmission electron microscope. Where the result of the examination UV-Vis showed absorption peaks of silver nanoparticles which formatted at wavelength (425) and XRD test confirmed the presence of silver nanoparticles clearly through compare peaks resulted with JCPDS card. It revealed the spectra of FTIR the existence of amine and aliphatic esters, that are involved in reducing and stabilizing AgNPs. Examination of TEM revealed that the silver nanoparticles were spherical shape and with an average size of 5-45 nm. Finally, the synthesized silver nanoparticles showed a good antifungal activity against some Candida sp. by observe inhibition zones that obtained.