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Research Journal of Pharmacy and Technology
Year : 2019, Volume : 12, Issue : 9
First page : ( 4429) Last page : ( 4433)
Print ISSN : 0974-3618. Online ISSN : 0974-360X.
Article DOI : 10.5958/0974-360X.2019.00763.7

Characterisations, Antimicrobial activities and Biological synthesis of silver (Ag) nanoparticles using the leaf extract of Urtica dioica

Joshi Naveen Chandra1,*, Kumar Vivek2, Singh Ajay3, Singh Rajendra4

1Assistant Professor, Department of Chemistry, Uttaranchal University, Dehradun (India)

2Project Fellow, Department of Chemistry, Uttaranchal University, Dehradun (India)

3Professor, Department of Chemistry, Uttaranchal University, Dehradun (India)

4Assistant Professor, Department of Chemistry, P. G. College, Gopeshwar (Uttarakhand)

*Corresponding Author E-mail: drnaveen06joshi@gmail.com

Online published on 24 December, 2019.

Abstract

Synthesis of metal and metal oxide nanoparticles using the extracts of biomaterials has many advantages over physical and chemical synthetic methods. Such biological or greener methods used to synthesise metal nanoparticles are highly efficient, low cost, environmentally friendly and convenient. In the present study, we have utilized the leaf extract of Urtica dioicaas reducing agent to synthesise silver nanoparticles (AgNPs) and the formation of nanoparticles confirmed by visual detection in which the colourless solution of silver nitrate (AgNO3) get changed into brownish colored solution. The biologically synthesised silver nanoparticles have been characterised by using different analytical methods such as UV-Visible, FTIR, XRD, FESEM and EDX. Further, the biologically synthesised AgNPs were found potential antibacterial agents against S. aureus, S. mutans, P. vulgaris and E. coli. The maximum zone of inhibitions has been observed for S. aureus and P. vulgaris at 12 mg/ml of AgNPs dosage.

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Keywords

Biological synthesis, Urtica dioica, Silver nanoparticles, Characterisations, Antimicrobial activity.

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