Green synthesis and characterization of zinc oxide nanoparticles with antibacterial and antifungal activity

By A. M. Pillai, Vishnu Sankar Sivasankarapillai, Abbas Rahdar, Jithu Joseph, Fardin Sadeghfar, Ronaldo Anuf A, K. Rajesh, G. Kyzas. 2020

409 citations recorded by the source corpus.

Abstract The present study involves synthesis of zinc oxide nanoparticles (ZnO-NPs) through a rapid, cost effective and eco-friendly method using four different plant extracts. The plants used in this study were Beta vulgaris, Cinnamomum tamala, Cinnamomum verum, Brassica oleracea var. Italica. Characterizations of ZnO-NPs were done using X-Ray Diffraction (XRD), Fourier Transform Infrared spectroscopy (FTIR), and Scanning Electron Microscopy (SEM). Moreover, the antibacterial activities of ZnO-NPs were demonstrated using both gram negative and gram positive bacteria such as Escherichia coli and Staphylococcus aureus, respectively. All samples of ZnO-NPs presented antibacterial activity against both gram negative and positive bacteria, while ZnO-NPs prepared using Beta vulgaris was found to be inactive towards S. aureus. The antifungal activity of ZnO-NPs was also demonstrated using Candida albicans and Aspergillus niger fungal stains. It was found that ZnO-NPs prepared using Beta vulgaris were active against A. niger, while those prepared from Cinnamomum tamala were active against C. Albicans. Also, ZnO-NPs prepared from the extract of Brassica oleracea var. italica have shown activity against both the fungal stains. Overall, a rapid, cost-effective, environmentally-friendly method for ZnO-NPs synthesis was demonstrated, which can be used as a potential antimicrobial agent against different microbial species.

Subfields: Complementary and alternative medicine, Materials Chemistry, Plant Science

View Paper: https://www.semanticscholar.org/paper/1c59d68f61a65c59b0a33e8aa3ce6a153d33eb25