keywords: Annona muricata seed, antimicrobial activity, manganese oxide nanoparticles
Green synthesis of metal nanoparticles is an interesting and expanding research area due to the potential applications for the eco-friendly development of novel technologies. Present study report a simple, convenient and low cost method for the synthesis of manganese oxide nanoparticles by reducing potassium permanganate with the help of easily available natural product viz Annona muricata seed extract. The characterization of the nanoparticle was done using UV-visible, FTIR and XRD spectroscopic techniques. The morphology of the manganese oxide was confirmed by SEM. The antimicrobial activities of synthesized MnO nanoparticles were observed with higher antimicrobial activity than the standard drug against S.aureus and exhibited similar inhibition activity to standard drug against E. coli.