Green Synthesis of Silver Nanoparticles using Litsea glutinosa L. Leaves and Stem Extracts and their Antibacterial Efficacy

Journal of Water and Environmental Nanotechnology

article

P. Koteswara Rao¹  B Vikram Babu²  A. Rama Krishna³  M. Sushma Reddi⁴  B. Sathish Mohan⁵  K. Anjani Devi⁶  U. Susmitha⁷  T. Raghava Rao¹ 

[1] Department of Biochemistry, Andhra University;Department of Physics, International School of Technology and Sciences ,(ISTS) for Women, Rajanagaram, Rajamahendravaram, Andhra Pradesh 533294, India. Aditya Engineering College;Department of ECE, Aditya College of Engineering and Technology;Department of Physics, Dr. B. R. Ambedkar University;Bio Enviro Chemical Solutions;Department of Physics, Aditya College of Engineering and Technology;Quiver Biotech Pvt Ltd.

关键词: Green synthesis;    L.glutinosa;    Leaf extract;    AgNPs;    Antibacterial activity;   

DOI  :  10.22090/jwent.2022.04.003

学科分类：数学（综合）

来源: Iranian Environmental Mutagen Society

【 摘 要 】

The present study explores the green approach for the preparation of silver nanoparticles (AgNPs) through the reduction of silver nitrate by the cell-free stem and leaf aqueous extracts of Litsea glutinosa (L.glutinosa) and its potential antibacterial activity. The analytical instruments include scanning electron microscopy, Fourier transforms infrared spectroscopy, UV-visible spectroscopy, and X-ray diffraction spectroscopy confirmed the synthesis of smaller, uniformly spherical AgNPs (10-40 nm). The average crystalline size of prepared AgNPs produced by L. glutinosa leaf extract was found to be 19 mm. From UV-visible spectral analysis, the maximum absorbance peak appeared at 444 nm for leaf extract AgNPs different from stem extract AgNPs (422 nm), which are found to be specific for AgNPs. The L.glutinosa stem extract-assisted AgNPs have shown significant antibacterial activity against Bacillus subtilis (Gram-positive) and Escherichia coli (Gram-negative) in comparison to Gentamycin. Hence, the AgNPs obtained by green synthesis can be therapeutically explored against bacterial infections.

【 授权许可】

CC BY