ABSTRACTObjective: The objective of this study is to synthesize gold and silver nanoparticles using the extracts of Eclipta prostrata.Methods: The nanoparticles synthesize is carried out using the powdered leaves and mixed with distilled water. The filtered extract was then mixedwith aqueous solution of HAuCl4 (1 mM)and AgNo(1 mM), and the reaction volume was made up to 100 ml. Then, the characterization of nanoparticleswas carried out using ultraviolet, infrared, scanning electron microscope, and the cytotoxic activity of the nanoparticles were investigated against HT29cancer cell lines. 3 Results: From the study, it was found that the plant extract was able to synthesize nanoparticles, and the synthesized nanoparticles were found to betoxic against the cancer cell line HT-29.Conclusion: In the present study, both silver and gold nanoparticles were synthesized using the plant extract of E. prostrata. The synthesizednanoparticles were found to be effective against HT 29 cancer cells. The green synthesized nanoparticles were found to be cost-effective, simpler andenvironmentally safe. As the nanotechnology is an emerging field in medicine, the biological synthesis of nanoparticles helps in the other way. Fromthe present study, the nanoparticles synthesized were thus proved against various studies novely. Hope this paves way for the better development ofnanoparticle production in the large scale amount.Keywords: Nanoparticles, Eclipta prostrata, Scanning electron microscope, HT-29 cell line. §Both authors are equally contributed
SILVER NANOPARTICLES FROM MEDICINALLY IMPORTANT EUPHORBIA CYATHOPHORA EXTRACT: BIOSYNTHESIS, CHARACTERIZATION, AND ANTICANCER ACTIVITY.