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VOL. 9, ISSUE 10 (2024)
Biogenic silver nanoparticles from Eucalyptus camaldulensis: Antioxidant, antimicrobial, and larvicidal properties
Authors
S Suganya, S Vijayanand, J Hemapriya, G Reshma, K Vanmathiselvi
Abstract
Silver nanoparticles derived from the aqueous leaf extract of
Eucalyptus camaldulensis were tested for antioxidant, antibacterial, and
larvicidal properties. Five tests were used to assess the antioxidant
capability. DPPH free radical scavenging, ABTS radical cation decolorization,
superoxide radical scavenging, Ferric reducing antioxidant power (FRAP), Nitric
oxide scavenging. The silver nanoparticles exhibited significant antioxidant
activities, with DPPH scavenging efficacy increasing from 20 % at 100 µg/mL to
80 % at 500 µg/mL, and FRAP values rising from 150 μmol Fe (II)/g extract to
750 μ mol Fe (II)/g extract over the same concentration range. Antimicrobial
testing showed effective inhibition against both bacterial and fungal strains,
including Escherichia coli, Staphylococcus aureus, Bacillus sp., Aspergillus
niger, Rhizopus, and Mucor. The larvicidal activity against Culex
quinquefasciatus larvae demonstrated a concentration-dependent increase in
mortality, reaching 100% at 100 ppm after 72 h. These results underscore the
potential of Eucalyptus camaldulensis-derived silver nanoparticles as
effective antioxidants, antimicrobial agents, and larvicides.
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Pages:66-72
How to cite this article:
S Suganya, S Vijayanand, J Hemapriya, G Reshma, K Vanmathiselvi "Biogenic silver nanoparticles from <i>Eucalyptus camaldulensis</i>: Antioxidant, antimicrobial, and larvicidal properties". International Journal of Entomology Research, Vol 9, Issue 10, 2024, Pages 66-72
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