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Vol. 32 No. 4 (2020): Vol 32 Issue 4, 2020

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Green Synthesis, Characterization and Antimicrobial Activity of Zinc Oxide Nanoparticles on Clinical Isolates of Streptococcus pyogenes

https://doi.org/10.14233/ajchem.2020.22495
S. Akash
Department of Biotechnology, M.S. Ramaiah Institute of Technology, Bangalore-560054, India
N. Ahalya
Department of Biotechnology, M.S. Ramaiah Institute of Technology, Bangalore-560054, India
P. Dhamodhar
Department of Biotechnology, M.S. Ramaiah Institute of Technology, Bangalore-560054, India

Corresponding Author(s) : P. Dhamodhar

dhamu_bio@msrit.edu; dhamu.bio@gmail.com

Asian Journal of Chemistry, Vol. 32 No. 4 (2020): Vol 32 Issue 4, 2020

Abstract

Zinc oxide nanoparticles were synthesized using epicarp of Punica granatum by combustion method at moderate temperatures. Zinc oxide nanoparticles obtained in agglomerate form were characterized by powder X-ray diffractometer (PXRD) and found to have hexagonal phase, wurtzite structure. The crystalline size of nanoparticle was found to be ~ 60 nm by using Debye-Scherrer formula. The morphology Index, Lorentz factor and Lorentz polarization factor were also calculated. Ultraviolet-visible spectroscopy (UV-vis) spectrum for ZnO nanoparticle showed a strong absorbance at 374 nm. This corresponds to the calculated band gap energy of 3.48 eV and the particle size calculated using band gap was found to be 50 nm. The Fourier Transform Infrared Spectroscopy (FTIR) spectrum showed a peak at 499 cm-1, which indicated Zn-O stretch bond. The scanning electron microscopy (SEM) analysis proved the size of nanoparticles synthesized were around 50 nm and energy dispersive X-ray spectroscopy (EDS) revealed the elemental composition of zinc oxide nanoparticles. The ZnO-NPs were evaluated for antibacterial activity against gram positive, tonsillitis causing Streptococcus pyogenes. From the present study, it was concluded that zinc oxide nanoparticles synthesized by combustion method could be valuable and economic in the field of nanotechnology.

Keywords

Zinc oxide nanoparticles Combustion Punica granatum Antibacterial activity
Akash, S., Ahalya, N., & Dhamodhar, P. (2020). Green Synthesis, Characterization and Antimicrobial Activity of Zinc Oxide Nanoparticles on Clinical Isolates of Streptococcus pyogenes. Asian Journal of Chemistry, 32(4), 907–911. https://doi.org/10.14233/ajchem.2020.22495
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