Authors
Info
R. Groach1, K. Yadav2,???????????????
?J. Sharma3 and
N. Singh1*?? ???
1Department of
Botany, Kurukshetra University, Kurukshetra-136 119, India
2Department of
Botany,???????? Gandhi Memorial National? College, Ambala Cantt-133 001,
India
3Department of
Biotechnology, Kurukshetra University, Kurukshetra-136 119, India
*Corresponding
Author Email :
nsheorankukbot11@gmail.com
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Abstract
Aim: To synthesize and
characterize stable silver nanoparticles (AgNPs) from the root extract of Saussurea
lappa, a medicinally important plant. The AgNPs was further evaluated for
their antibacterial activity.?
Methodology: The
biosynthesised AgNPs were characterised by change in colour pattern and
confirmed by UV?Visible spectroscopy, Transmission Electron Microscopy (TEM),
X-Ray Diffraction (XRD) and Fourier Transform Infrared Spectroscopy (FTIR).
Results: UV-Vis
spectroscopy study showed characteristic surface plasmon band (SPR) of
synthesized AgNPs at 418 nm. FTIR studies revealed presence of some
biomolecules responsible for reduction, stabilization and capping agents
towards these synthesized AgNPs. TEM analysis revealed that the size of AgNPs
ranged between 7.13 ? 24.0 nm and had spherical shape. XRD data showed
face-centered cubic (fcc) nature of AgNPs. The synthesized AgNPs showed
significant antibacterial activity against one Gram positive (Bacillus
cereus) and one Gram negative (Escherichia coli) bacterial strain.??
Interpretation: The biologically
synthesized nanoparticles from the root extract of S. lappa were
stable and showed enhanced antibacterial activity against both type of
bacterial strains and could be utilized for industrial and remedial purposes.
Key words: Antibacterial activity, Biosyntheis, Medicinal plant, Saussurea
lappa, Silver nanoparticles
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