International Journal of Nanoscience and Nanotechnology

International Journal of Nanoscience and Nanotechnology

Green Synthesis of Silver Nanoparticle Using Okoubaka Aubrevillei for Antimicrobial Treatment

Document Type : Research Paper

Authors
Joseph Emeribe
Amarachi Nkwoada
Ali Bilar
Christopher Alisa
Department of Chemistry, School of Physical Sciences, Federal University of Technology Owerri, PMB 1526, Imo State, Nigeria
10.22034/ijnn.2025.2035239.2542
Abstract
   This study prepared silver nanoparticles via the green approach using novel seed pulps of Okoubaka aubrevillei, a medicinal herb. The synthesized silver nanoparticles (AgNPs) were characterized by SEM-EDX, TEM, FTIR, UV-VIS and antimicrobial properties. The surface morphology showed an amorphous and polydispersed spherical shape in a random arrangement in the range of  10 – 50 nm. The nanoparticle shapes observed by TEM were spherical in shape with narrow particle size distribution. The FTIR showed that the extract contains carboxyl (-C=O), hydroxyl (-OH) and amine (N-H) groups which aid in the reduction of Ag+ to Ag0 nanoparticles. The extracts contained a carbonyl group of amino acids which acts as a stabilizing agent to prevent agglomeration.  UV-visible spectra of the AgNPs synthesized by methanolic extract indicated that AgNPs surface Plasmon band occurred in the range of 360 – 380 nm in an aqueous medium and the strongest absorbance bands at 370 nm.  The antimicrobial study showed that the fungi; C. albicans was more susceptible than the bacteria; E. coli, S. aerus, and Ps. aeruginosa, while Ps. aeruginosa is a less susceptible microbe. The synthesized AgNPs were shown to be very effective against C. albicans, and recommended for further application.
Keywords
Extraction
Synthesis
medicinal
plant extracts and
UV-absorption

Subjects

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International Journal of Nanoscience and Nanotechnology
Volume 20, Issue 3
2024
Pages 219-229