Autor(es) Balasubramani, Govindasamy Department of Biotechnology, Periyar University, Periyar Palkalai Nagar, Salem 636 011, Tamil Nadu, India, perumalarticles@gmail.com Govindasamy Govindasamy Balasubramani Balasubramani Balasubramani, Govindasamy , Ramkumar, Rajendiran Rajendiran Rajendiran Ramkumar Ramkumar Ramkumar, Rajendiran , Krishnaveni, Narayanaswamy Narayanaswamy Narayanaswamy Krishnaveni Krishnaveni Krishnaveni, Narayanaswamy , Sowmiya, Rajamani Rajamani Rajamani Sowmiya Sowmiya Sowmiya, Rajamani , Deepak, Paramasivam Paramasivam Paramasivam Deepak Deepak Deepak, Paramasivam , Arul, Dhayalan Dhayalan Dhayalan Arul Arul Arul, Dhayalan , Perumal, Pachiappan Pachiappan Pachiappan Perumal Perumal Perumal, Pachiappan

ResumoA rapid bio-reduction of chloroauric acid (HAuCl sub(4)) was achieved by Chloroxylon swietenia DC leaf extract (CSLE), which resulted in the formation of well dispersed C. swietenia gold nanoparticles (CSGNPs). The formation of GNPs was confirmed by color changes from yellowish green to purple and their characteristic peak at 545 nm. The characterization of synthesized CSGNPs was made through X-ray diffraction (XRD), fourier transform infrared spectroscopy (FTIR), high resolution transmission electron microscopy (HRTEM) equipped with energy dispersive X-ray spectroscopy (EDX) followed by size and zeta potential analyses. The GC-MS profile of C. swietenia methanolic leaf extract (CSMLE) resulted 20 phytocomponents, among those heptacosanoic acid, 25-methyl-, methyl ester (C sub(29)H sub(58)O sub(2)) attributes highest peak area. The efficiency of the synthesized CSMLE, CSGNPs and CSLE were tested against fourth instar larvae of malarial and dengue vector, which resulted more substantial upshot than with leaf extract treated. The Lethal concentration (LC sub(50)) values of CSMLE, CSGNPs and CSLE were found to be 0.509, 0.340, 0.423 ppm and 0.602, 0.188, 0.646 ppm on Aedes aegypti and Anopheles stephensi, respectively. The findings form an important baseline information proceeding biologically innocuous biopesticide for controlling the malarial and dengue vectors.

Palavras-ChaveInfrared spectroscopy; Human diseases; Fourier transforms; Leaves; Malaria; Pest control; Diffraction; Aquatic insects; Mortality causes; Aedes aegypti; Anopheles stephensi; Swietenia

ImprentaJournal of Photochemistry and Photobiology B: Biology, v. 148, p. 1-8, 2015.

DescritoresAedes aegypti - Transmission ; Aedes aegypti - Dengue

Data de Publicação:2015