Biosynthesis of silver nanoparticles using Garcinia kola and its antimicrobial potential
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We have investigated the green synthesis and antimicrobial activity of silver nanoparticles using
Garcinia kola. Aqueous extract of G. kola was used to reduce AgNO3 solution to obtain black
nanocrystal of silver nanoparticles. Antimicrobial activity of the silver nanoparticles was tested against
Escherichia coli, Klebsiella pneumonia, Bacillus subtilis, Staphylococcus aureus, Aspergillus niger,
Rhizopus stolonifer and Candida albican. The synthesized silver nanoparticles was characterized using
UV-vis spectroscopy, X-ray diffraction (XRD), Transmission electron microscopy (TEM), and Fourier
transform infrared (FTIR) spectroscopy. UV-visible exhibits prominently the characteristic surface
plasmon resonance at around 427 nm. A remarkable particle growth onset of 10 min was observed
while the reaction ended within 30 min. The XRD analysis shows that the synthesized silver
nanoparticles are crystalline in nature and well-dispersed silver nanoparticles with an approximate size
of 10.4 nm were observed on TEM. The synthesized silver was found to possess good antimicrobial
activity against all the tested microbes. The application of the green synthesized nanoparticles can be
used in many fields such as foods, beverages, cosmetics and medicine.
Keywords
Q Science (General), QD Chemistry