Abstract
Biosynthesis of metal nanoparticles using microorganisms is an emerging trend in nanotechnology and thus have wide application in agriculture and biomedical field due to its biocompatibility and ecofriendly nature. Our present study reports the synthesis of copper nanoparticles (CuNPs) using the whole cell biomass of F. proliferatum (YNS2) as a catalyst. The synthesized CuNPs were characterized by UV–visible spectroscopy, FTIR, XRD, FE-SEM, EDX and TEM analysis. The CuNPs showed prominent antimicrobial activity at different concentrations against the clinical pathogens viz., Bacillus subtilis, Staphylococcus aureus, Klebsiella pneumoniae and E. coli. In addition, we have evaluated the larvicidal activity of CuNPs against the larvae of Anophelex stephensi, Aedes aegypti and Culex quinquefasciatus. CuNPs showed the LC50 value of 39.25 µg/ml, 81.34 µg/ml and 21.84 µg/ml. A. aegypti, A. stephensi and C. quinquefasciatus respectively. Our present study clearly indicates that F. proliferatum (YNS2) whole cell mediated CuNPs are green, biodegradable, cheaper and a better alternative to synthetic antimicrobials and chemical insecticides.
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