Autor(es): Suresh Gopal; Gunasekar Poosali Hariharan; Kokila Dhanasegaran; Prabhu Durai; Dinesh Devadoss; Ravichandran Nagaiya; Ramesh Balasubramanian; Koodalingam Arunagirinathan; Vijaiyan Siva Ganesan

Resumo: Green synthesis of silver nanoparticles (AgNPs) using aqueous root extract of Delphinium denudatum (Dd) by reduction of Ag(+) ions from silver nitrate solution has been investigated. The synthesized DdAgNPs were characterized by using UV-Vis spectroscopy, X-ray diffraction (XRD), Field emission scanning electron microscope (FESEM) and Fourier transform infrared spectroscopy (FTIR). The prepared DdAgNPs showed maximum absorbance at 416nm and particles were polydispersed in nature, spherical in shape and the size of the particle obtained wasâ?½85nm. The DdAgNPs exhibited antibacterial activity against Staphylococcus aureus ATCC 6538, Bacillus cereus NCIM 2106, Escherichia coli ATCC 8739 and Pseudomonas aeruginosa ATCC 9027. The DdAgNPs showed potent larvicidal activity against second instar larvae of dengue vector Aedes aegypti with a LC50 value of 9.6ppm.

Palavras-Chave: Delphinium denudatum; Green synthesis; Nanoparticles; Antibacterial; Mosquito larvicidal

Imprenta: Spectrochimica acta. Part A, Molecular and Biomolecular Spectroscopy, v. 5, n. 127, p. 61-66, 2014

Identificador do Objeto Digital: 10.1016/j.saa.2014.02.030

Descritores: Aedes aegypti - Flaviviridae ; Aedes aegypti - Pathogenesis . Aedes aegypti - Viral infections ; Aedes aegypti - Virus ; Aedes aegypti - Transmission ; Aedes aegypti - Dengue ; Aedes aegypti - Public health

Data de Publicação: 2014