Biosynthesis of silver nanoparticles using Bacillus thuringiensis against dengue vector, Aedes aegypti (Diptera: Culicidae).
Parasitol Res
; 113(1): 311-6, 2014 Jan.
Article
em En
| MEDLINE
| ID: mdl-24173811
ABSTRACT
The present study reveals the larvicidal activity of silver nanoparticles (AgNPs) synthesized by Bacillus thuringiensis (Bt) against Aedes aegypti responsible for the diseases of public health importance. The Bt-AgNPs were characterized by using UV-visible spectrophotometer followed by scanning electron microscopy (SEM) and energy-dispersive X-ray (EDX) spectroscopy. A surface plasmon resonance spectrum of AgNps was obtained at 420 nm. The particle sizes were measured through SEM imaging ranging from 43.52 to 142.97 nm. The Bt-AgNPs has also given a characteristic peak at 3 keV in EDX image. Interestingly, the mortality rendered by Bt-AgNPs was comparatively high than that of the control against third-instar larvae of A. aegypti (LC50 0.10 ppm and LC90 0.39 ppm) in all the tested concentrations, viz. 0.03, 0.06, 0.09, 0.12, and 0.15 ppm. Hence, Bt-AgNPs would be significantly used as a potent mosquito larvicide against A. aegypti.
Texto completo:
1
Coleções:
01-internacional
Contexto em Saúde:
2_ODS3
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3_ND
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4_TD
Base de dados:
MEDLINE
Assunto principal:
Prata
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Bacillus thuringiensis
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Aedes
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Nanopartículas
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Inseticidas
Limite:
Animals
Idioma:
En
Revista:
Parasitol Res
Ano de publicação:
2014
Tipo de documento:
Article