Background: In recent times, biosyntheses of metal nanoparticles were
used for several life rescue applications. In this study, Dillenia
indica leaf aqueous extract was utilized for the synthesis of gold
nanoparticles. Objective: To test anti-microbial properties of
biologically fabricated gold nanoparticles. Methods: Gold nanoparticles
were efficiently prepared by making use of aqueous leaf extract of
Dillenia indica. The excitation of formed AuNPs was confirmed using
UV\u2013Vis spectrophotometer. In particular, absorption spectra of
AuNPs exhibited a well-defined SPR band centered at around 530 nm.
Results: The high-resolution Scanning Electron Microscope (SEM) results
of the obtained AuNPs confirmed the formation of particles with a size
range of 5\u201350 nm. The ultra-high resolution TEM (UHRTEM) images
displayed clear lattice fringes on the particle surfaces. Single
crystalline nature of the biosynthesized AuNPs was represented by means
of selected-area electron diffraction pattern. Conclusion: The
antibacterial activity of AuNPs revealed significant activity towards
both gram negative and gram positive bacteria signifying their
potential disinfection related applications in medicine and biology.
DOI: https://dx.doi.org/10.4314/ahs.v19i1.17 Cite as: Huang Q, Luo A,
Jiang L, Zhou Y, Yang Y, Liu Q, et al. Disinfection efficacy of green
synthesized gold nanoparticles for medical disinfection applications.
Afri Health Sci. 2019;19(1). 1441-1458. https://dx.doi.
org/10.4314/ahs.v19i1.1