title: Green synthesis of silver nanoparticles using Delphinium denudatum root extract exhibits antibacterial and mosquito larvicidal activities.
abstract: 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 was⩽85nm. 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.
authors.affiliation: Department of Microbiology, Sri Sankara Arts & Science College, Enathur, Kanchipuram 631 561, Tamilnadu, India. Electronic address: sureshmicrobes@gmail.com.
authors.forename: Gopal
authors.initials: G
authors.lastname: Suresh
authors.affiliation: Department of Microbiology, Sri Sankara Arts & Science College, Enathur, Kanchipuram 631 561, Tamilnadu, India.
authors.forename: Poosali Hariharan
authors.initials: PH
authors.lastname: Gunasekar
authors.affiliation: Department of Microbiology, Sri Sankara Arts & Science College, Enathur, Kanchipuram 631 561, Tamilnadu, India.
authors.forename: Dhanasegaran
authors.initials: D
authors.lastname: Kokila
authors.affiliation: Department of Zoology, University of Madras, Guindy Campus, Chennai 600 025, Tamilnadu, India.
authors.forename: Durai
authors.initials: D
authors.lastname: Prabhu
authors.affiliation: Department of Zoology, University of Madras, Guindy Campus, Chennai 600 025, Tamilnadu, India.
authors.forename: Devadoss
authors.initials: D
authors.lastname: Dinesh
authors.affiliation: Department of Biotechnology, University of Madras, Guindy Campus, Chennai 600 025, Tamilnadu, India.
authors.forename: Nagaiya
authors.initials: N
authors.lastname: Ravichandran
authors.affiliation: Department of Biotechnology, Sri Sankara Arts & Science College, Enathur, Kanchipuram 631 561, Tamilnadu, India.
authors.forename: Balasubramanian
authors.initials: B
authors.lastname: Ramesh
authors.affiliation: Department of Biotechnology, Sri Sankara Arts & Science College, Enathur, Kanchipuram 631 561, Tamilnadu, India.
authors.forename: Arunagirinathan
authors.initials: A
authors.lastname: Koodalingam
authors.affiliation: Department of Biotechnology, University of Madras, Guindy Campus, Chennai 600 025, Tamilnadu, India.
authors.forename: Ganesan
authors.initials: G
authors.lastname: Vijaiyan Siva
mesh_terms: D000330:Aedes; D000818:Animals; D000900:Anti-Bacterial Agents / Q000138:chemical synthesis / Q000737:chemistry / Q000494:pharmacology; D001419:Bacteria / Q000254:growth & development; D031882:Delphinium / Q000737:chemistry*; D003715:Dengue / Q000635:transmission; D003716:Dengue Virus; D007303:Insect Vectors; D007306:Insecticides / Q000138:chemical synthesis / Q000737:chemistry / Q000494:pharmacology; D007814:Larva; D053768:Metal Nanoparticles / Q000737:chemistry*; D010571:Pest Control / Q000379:methods; D010936:Plant Extracts / Q000737:chemistry*; D018517:Plant Roots / Q000737:chemistry*; D012834:Silver / Q000737:chemistry* / Q000494:pharmacology
chemical_list: D000900:Anti-Bacterial Agents; D007306:Insecticides; D010936:Plant Extracts; D012834:Silver
keywords: Antibacterial; Delphinium denudatum; Green synthesis; Mosquito larvicidal; Nanoparticles