By using a green-synthetic approach, we used both water and 70% ethanol extracts of Artemisia capillaris as a reducing agent for generating silver nanoparticles (AgNPs). The formation of AgNPs was confirmed by using UV-Vis spectrophotometry, Fourier transform infrared spectroscopy, high resolution-transmission electron microscopy and atomic force microscopy. The average diameter was 29.71 nm with the water extract and 29.62 nm with the 70% ethanol extract. AgNPs exerted a significant enhancement of antibacterial activity against five strains (Pseudomonas aeruginosa, Escherichia coli, Enterobacter cloacae,Klebsiella oxytoca,and Klebsiella areogenes) when compared with the extract alone. AgNPs generated by the 70% ethanol extract showed slightly higher antibacterial activity than those produced with the water extract. These results suggest that plant extracts have the potential in being powerful reducing agents for the production of biocompatible AgNPs with enhanced antibacterial activities.

Green-synthesis of silver nanoparticles with <i>Artemisia capillaris</i> extracts

245th National Meeting (2013)

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Green-synthesis of silver nanoparticles with Artemisia capillaris extracts