Evaluation of phytosynthesised silver nanoparticles from leaf extracts of Leucas aspera and Hyptis suaveolens and their larvicidal activity against malaria, dengue and filariasis vectors

Parasite Epidemiology and Control
Devan ElumalaiPatheri Kunyil Kaleena

Abstract

The present study deals with the green synthesis of silver nanoparticle from the aqueous leaf extracts of Leucas aspera and Hyptis suaveolens as reducing agent and to investigate the larvicidal activity of synthesized silver nanoparticles. The synthesized silver nanoparticles were characterized by Ultraviolet and visible absorption spectroscopy (UV), Fourier transform-infrared spectroscopy (FT-IR), X-ray spectroscopy (XRD), Field emission scanning electron microscope (FESEM) and High-resonance transmission electron microscopy (HRTEM) analysis. The nanoparticles are spherical, hexagonal, triangular and polyhedral in shape and the size of the Silver nanoparticles (AgNPs) of L. aspera was found to be in the range of 7-22 nm and AgNPs of H. suaveolens was 5-25 nm. Larvicidal bioassay with synthesized AgNPs synthesized from L. aspera and H. suaveolens extract, showed 100% mortality at 10 mg/L against Aedes aegypti, Anopheles stephensi and Culex quinquefasciatus with LC50 of 4.02, 4.69, 5.06 mg/L and LC90 of 11.22, 12.09, 12.74 mg/L and LC50 of 4.63, 4.04, 3.52 mg/L and LC90 of 12.07, 10.99, 09.61 respectively. These results suggest that the synthesized AgNPs of L. aspera and H. suaveolens have the potential to be used as an ideal ec...Continue Reading

Citations

Oct 2, 2019·Materials·Oleg V Mikhailov, Ekaterina O Mikhailova
May 10, 2020·Environmental Science and Pollution Research International·Dinesh KumarVeena Agrawal
May 28, 2020·Environmental Science and Pollution Research International·Jonatas Lobato DuarteMarlus Chorilli
Mar 11, 2020·Frontiers in Bioengineering and Biotechnology·Estefânia Vangelie Ramos CamposLeonardo Fernandes Fraceto
Oct 9, 2020·Biological Trace Element Research·Kaminee Maduray, Raveen Parboosing
Nov 27, 2020·Nanomaterials·Oana GherasimAlexandru Mihai Grumezescu
Dec 2, 2020·Journal of Functional Biomaterials·Ekaterina O Mikhailova
Aug 9, 2020·Journal of Ethnopharmacology·Henrique BridiGilsane Lino von Poser

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Methods Mentioned

BETA
surface plasmon resonance
X ray
transmission electron microscopy
X-ray
electron diffraction
Transmission

Software Mentioned

SPSS

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