Eco-friendly phytofabrication of silver nanoparticles using aqueous extract of Aristolochia bracteolata Lam: its antioxidant potential, antibacterial activities against clinical pathogens and malarial larvicidal effects
Biomass Conversion and Biorefinery(2023)
摘要
The silver nitrate was reduced into silver nanoparticles by using the Aristolochia bracteolata plant aqueous extract. The green-synthesized nanoparticles were characterized through UV–Vis spectrophotometry, FTIR, EDAX, XRD, and TEM analysis. Results of TEM analysis clearly show that synthesized AgNP size range is 6 to 20 nm. The average particle size and zeta potential value was determined and found to be 16.7 nm and − 24.2 mV, respectively. The silver nanoparticles showed remarkable antibacterial, DPPH, ABTS, and FRAP activity. Silver nanoparticles exhibited strong antiradical effectiveness with minimal concentration. AgNPs had a dose-dependent effect on Anopheles stephensi larvae, with LC 50 values of 21.3, 45.5, 12.7, and 7.9 and LC 90 values of 32.4, 65.3, 20.1, and 15.4 µg/mL, respectively. The highest pupal activity was observed at 2.0 µg/mL, with the LC 50 being 4.0 and the LC 90 being 9.1 µg/mL, respectively. The biotoxicity assay of A. salina shows 6.33–48.33% mortality, which was exhibited by the A. bracteolata -bioconverted AgNPs. The LC 50 and LC 90 values were 610.381 and 6214 µg/mL. No behavioral variations were observed. The present study provides the first scientific information on the antibacterial, larvicidal, and pupicidal properties of AgNPs produced from a leaf extract of A. bracteolata .
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关键词
AgNPs,Clinical pathogens,DPPH,Anopheles stephensi,Artemia salina
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