Open AccessGreen Synthesis of Gold Nanoparticles from Leaf Extracts of Ginkgo biloba L. and its Antibiotic Potential Against Escherichia coli and Bacillus subtilis
Publication year - 2020
Publication title -
proceedings international
Language(s) - English
Resource type - Journals
ISSN - 2668-6384
DOI - 10.33263/proceedings21.029029
Subject(s) - ginkgo biloba , colloidal gold , bacillus subtilis , antimicrobial , nanoparticle , antibacterial activity , escherichia coli , chemistry , aqueous solution , nanomaterials , nuclear chemistry , bacteria , nanotechnology , biochemistry , materials science , biology , organic chemistry , botany , genetics , gene
Based on the global environmental pollution problems, the main focus of every nano-research is to produce the nanomaterial in a green and eco-friendly way without any interference of chemical synthesis. By the way, the present study was intended to use an aqueous extract of the living fossil plant viz., Ginkgo biloba L., to synthesize the gold nanoparticles and evaluate their antibiotic activity against bacterial pathogens. The gold nanoparticles (AuNps) were successfully synthesized by mixing the Ginkgo biloba aqueous extract and the auric chloride solution for approximately 24 hours. The UV-Vis spectra of Gold nanoparticles (AuNps) showed the maximum absorption peak at 520nm. The SEM analysis also showed the gold nanoparticles synthesized from Ginkgo biloba were spherical with particle size ranging from 40 to 60nm. During our study, the gold nanoparticles exhibited significant antimicrobial activity against bacterial pathogens, i.e., E. coli and Bacillus subtilis. The later bacterium was found to be more susceptible to the nanoparticles as well as the extracts of G. biloba in comparison to the former bacterium.