Abstract

• In the present study, the leaves of Sesbania grandflora (L.) Poir, Senna siamea (Lam.) Irwin & Barney and Tamarindus indica L. were collected from Yadanabon University Campus, Amarapura Township, Mandalay Region, Myanmar. Firstly, preliminary detection of phytochemical compounds present in three kinds of leaves were carried out. This phytochemical dectection gave rise to positive tests for alkaloid, phenolic, polyphenol, steroid and saponin. The mineral content of three kinds of leaves sample were analyzed by using EDXRF (Energy Dispersive X-ray Fluorescence) spectroscopy. The green synthesis was done by using the aqueous solution of Sesbania grandflora (L.), Senna siamea (Lam.) and Tamarindus indica L. and AgNO3. Silver was particular interest for this process due to its evocative physical and chemical properties. A fixed ratio of plant extract to metal ion was prepared and the colour change was observed which proved the formation of nanoparticles. The size distribution of nanoparticles, surface and morphological features of synthesized silver nanoparticles were studied by Scanning Electron Microscope (SEM). Moreover, the crystal size and crystalline nature of synthesized silver nanoparticles were determined by X-ray diffraction (XRD). Finally, the prepared silver nanoparticles were found to possess antibacterial activities on six selected microorganisms by agar-well diffusion method.