5 research outputs found
Biosynthesis of silver nanoparticles using fresh extracts of <i>Tridax procumbens</i> Linn
359-368<span style="mso-bidi-font-size:
9.0pt;letter-spacing:-.1pt" lang="EN-GB">A simple and eco-friendly method for the synthesis
of biogenic nanoparticles (NP’s) using an aqueous solution of
<span style="mso-bidi-font-size:9.0pt;letter-spacing:
-.1pt" lang="EN-GB">T. procumbens <span style="mso-bidi-font-size:
9.0pt;letter-spacing:-.1pt;font-style:normal" lang="EN-GB">fresh <span style="mso-bidi-font-size:9.0pt;letter-spacing:
-.1pt" lang="EN-GB">plant extract (leaf and stem) as a bioreductant is reported. The
prepared biogenic nanoparticles were well characterized using U.V. visible
spectroscopy, scanning electron microscopy, X-ray diffraction and
Fourier-transform infrared spectroscopy. The
particles were confirmed to be elemental crystal by X-ray diffraction. <span style="mso-bidi-font-size:9.0pt;letter-spacing:
-.1pt" lang="EN-GB">The <span style="mso-bidi-font-size:9.0pt;
letter-spacing:-.1pt" lang="EN-GB">potential applications of biosynthesized nanoparticles as
antimicrobial (antibacterial and antifungal) against pathogens Escherichia
coli, Vibrio cholerae, Aspergillus niger and Aspergillus flavus
were demonstrated.
</span
<span style="font-size:11.0pt;font-family: "Times New Roman";mso-fareast-font-family:"Times New Roman";mso-bidi-font-family: Mangal;mso-ansi-language:EN-GB;mso-fareast-language:EN-US;mso-bidi-language: HI" lang="EN-GB">Assessment of antibacterial and antifungal activities of silver nanoparticles obtained from the callus extracts (stem and leaf) of <i>Tridax procumbens</i> L.</span>
114-120Now-a-days metal nanoparticles are
potentially used as tools in the field of engineering and biological sciences
as well as in industries and communication technologies. The important aspect
of nanotechnology is to develop dependable, environmentally benign processes
for the synthesis of nanoscale materials. Presently, we describe a cost-effective and
eco-friendly technique for green synthesis of biogenic nanoparticles from the
extract of callus obtained through stem and leaves of Tridax procumbens L.,
which acted as a reducing as well as capping agent. This plant has been opted
for the present study for its known medicinal properties. This method of
synthesizing nanoparticles led to rapid reduction of silver ions, resulting in
the formation of stable crystalline nanoparticles in the solution. The
synthesis of biogenic nanoparticles was carried out by adding silver nitrate
solution to the callus extract. Nanoparticles were screened using UV-Visible
absorption spectroscopy and were well characterized by SEM, XRD and FTIR
analysis. The process responsible for the formation of nanoparticles from the
biomass of plant callus is called bio-mineralization. The synthesized biogenic
nanoparticles were further tested for antimicrobial activity using Escherichia
coli, Vibrio cholerae, Aspergillus niger and
A. flavus. Later, the activities of synthesized biogenic nanoparticles
were also compared with various plant extracts
(aqueous, ethanolic and methanolic) of T. procumbens