Abstract
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► The paper emphasizes the heat stable bioreductant present in the plant extracts for the synthesis of nanoparticles. ► The research highlights in the paper is included elaborated procedures and review in this aspect. ► The nanobiotechnological and medical application work in the plant,
Mentha piperita at the first time. ► This is a one among few plant has role to synthesis of both silver and gold nanoparticles. ► To the best of our knowledge, this may be the first report on sterilized plant extract has been used in this direction and antibacterial property also been observed from the synthesized nanoparticles against clinical pathogens.
Biosynthesis of nanoparticles is under exploration is due to wide biomedical applications and research interest in nanotechnology. Bioreduction of silver nitrate (AgNO
3) and chloroauric acid (HAuCl
4) for the synthesis of silver and gold nanoparticles respectively with the plant extract,
Mentha piperita (Lamiaceae). The plant extract is mixed with AgNO
3 and HAuCl
2, incubated and studied synthesis of nanoparticles using UV–Vis spectroscopy. The nanoparticles were characterized by FTIR, SEM equipped with EDS. The silver nanoparticles synthesized were generally found to be spherical in shape with 90
nm, whereas the synthesized gold nanoparticles were found to be 150
nm. The results showed that the leaf extract of menthol is very good bioreductant for the synthesis of silver and gold nanoparticles and synthesized nanoparticles active against clinically isolated human pathogens,
Staphylococcus aureus and
Escherichia coli.