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- W2063292203 abstract "► Ultrafine and highly crystalline gold and silver nanoparticles (5 and 30 nm) using biosynthesis route. ► Low toxic, eco friendly, simple and highly efficient green chemistry approach. ► High surface area of silver and gold nanoparticles. ► Gold and silver nanoparticles found to be as effective growth inhibitors against tested microorganisms. An eco friendly simple biosynthetic route was used for the preparation of monodisperse and highly crystalline gold and silver nanoparticles using cell free extract of fungus, Candida albicans . Transmission electron microscopic studies show the formation of gold and silver nanocrystals of average size of 5 nm and 30 nm with the specific surface areas of 18.9 m 2 /g and 184.4 m 2 /g respectively. The interaction of gold and silver nanoparticles with proteins has been formulated by FT-IR spectroscopy and thermal gravimetric analysis. The formation of gold and silver nanoparticles was also confirmed by the appearance of a surface plasmon band at 540 nm and 450 nm respectively. The antimicrobial activity of the synthesized gold and silver nanoparticles was investigated against both Staphylococcus aureus and Escherichia coli . The results suggest that these nanoparticles can be used as effective growth inhibitors against the test microorganisms. Greater bactericidal activity was observed for silver nanoparticles. The E. coli , a gram negative bacterium was found to be more susceptible to gold and silver nanoparticles than the S. aureus , a gram positive bacterium." @default.
- W2063292203 created "2016-06-24" @default.
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- W2063292203 date "2013-07-01" @default.
- W2063292203 modified "2023-10-14" @default.
- W2063292203 title "Biosynthesis, structural characterization and antimicrobial activity of gold and silver nanoparticles" @default.
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- W2063292203 doi "https://doi.org/10.1016/j.colsurfb.2013.02.004" @default.
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