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Silver nanoparticles (AgNPs) have received significant attention due to their distinctive antimicrobial, anticancer, catalytic and photochemical activity. The objective of this work is to amalgamate silver nanoparticles from the aqueous extract of Biamarckia nobilis seeds using green method, characterization using UV-visible spectroscopy, X-ray diffraction, transmission electron microscopy and FTIR spectroscopy. Further, its antimicrobial and anticancer activities were evaluated. The results displayed the characteristic UV peak, cubic phase with crystalline nature, spherical in shape having average size 14 nm, prominent peaks of bio-functional groups, good antimicrobial and anticancer activities.

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In recent years, there is significant increase in the attention towards the green synthesis of metal oxide nanoparticles, particularly by the interaction of plant extracts and metal salts; still there is no such published evidence is available on the synthesis of ZnO nanoparticles from aqueous leaf extract of Cotoneaster acuminatus. The synthesis of ZnO nanoparticles was confirmed by using several spectroscopic techniques i.e., UV-Vis, FT-IR, powder-XRD and TEM. It was confirmed from the spectroscopic data that the synthesized nanoparticles were hexagonally orientated, size in the 16-38 nm range and encapsulated by biochemicals present in the leaf extract. These nanoparticles were further evaluated for antimicrobial activity Bacillus subtilisNCFT.583.08, Staphylococcus aureusNCFT.576.08, Pseudomonas aeruginosaNCFT.645.11, Candida albicansNCFT.1006.11 and Saccharomyces cerevisiae NCFT.1008.11strains. This research work might be considered as a successful attempt to create and evaluate medicinal properties of ZnO nanoparticles in combination with Cotoneaster acuminatus leaf extract.

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