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Biotechnology Congress 2018 & Emerging Materials 2018 Biomedical Research | ISSN: 0976-1683 | Volume 29
S e p t e m b e r 0 6 - 0 7 , 2 0 1 8 | B a n g k o k , T h a i l a n d
alliedacademies Joint Event on
EMERGING MATERIALS AND NANOTECHNOLOGY
BIOTECHNOLOGY
&
Annual Congress on
Global Congress on
Anita Sadadevan Ethiraj, Biomed Res 2018, Volume 29 | DOI: 10.4066/biomedicalresearch-C4-010
INVESTIGATION OF BIOGENIC AG
NANOPARTICLES USING MEDICINAL PLANT
EXTRACT AND THEIR ANTIMICROBIAL
STUDY
Anita Sadadevan Ethiraj
VIT-AP University, India
Silver (Ag) nanoparticles exhibit significant role in the field of
nanotechnology and nanomedicine owing to its physiochemical
properties like antibacterial and antifungal activities, chemical stability,
catalytic activity and good conductivity. These inorganic nanoparticles
being safe and nontoxic can destroy disease-causing microorganisms.
The potential applications of Ag nanoparticles include optical receptors for
biolabelling, wound dressing, biosensors, medical devices, antimicrobial
nanopaints, solar energy absorption as selective coatings, water purification
and in electrical batteries as intercalation material. Amongst various existing
physical and chemical methods, the biological methods are rapid, low-cost,
ecofriendly hence mostly preferred for the synthesis of Ag-NPs. These
methods utilize use of microorganisms, fungi, enzymes and plant extracts as
reducing and stabilizing agents. The major advantage of using plant extracts
is the elimination of cell culture. In literature many reports are available on
the green synthesis of Ag-NPs from numerous plant extracts which includes
widely used medicinal plants such as aloe vera, tulsi (Ocimum tenuiflorum),
nilgiri (Eucalyptus chapmaniana), amla (Emblicaofficinallis ), ashwagandha
(Withaniasomnifera), hibiscus (Rosa sinensis), neem ( Azadirachta indica)
etc. The present talk will focus on some of the interesting work carried out
by our research group on Carica papaya and Alstonia scholaris plants with
good medicinal values where the leaf extracts itself acts as a reducing and
stabilizing agent for the formation of Ag nanoparticles using green chemistry
approach. The optical, structural and morphological characteristics of
silver nanoparticles synthesized using various characterization tools like
x-ray diffraction (XRD), atomic force microscopy (AFM), UV-Vis absorption
spectroscopy, scanning electron microscopy (SEM) coupled with x-ray energy
dispersive spectroscopy (EDS) and atomic force microscopy (AFM) will be
presented. Later the impact of leaf condition on the formation of nanoparticles
as well as the evaluated efficacy of the antimicrobial activity of biogenic Ag
NPs from A scholaris will be discussed.
Anita Sagadevan Ethiraj has completed her PhD from
Department of Physics, University of Pune, India in
2006. She was a visiting Scientist and BK21 postdoc-
toral Researcher for the year 2006-2008 in POSTECH
and SKKU, South Korea. She also worked on US de-
fense sponsored project from 2010-2013 at North
Carolina, USA. She is presently working as an Associ-
ate Professor in the Physics Department, VIT-AP Uni-
versity, India. Her research area of interest includes
core-shell nanoparticles, quantum dots in diodes and
LED’s, thin film technology, photovoltaics, green chem-
istry, graphene/metal oxide-based nanocomposites
for environmental and energy applications. She has
delivered several invited talks in national and inter-
national conferences, served as Convenor, National
Advisor Committee Member, Technical Committee
Member and session chairs, holds membership in
many professional organizations, reviewer for Elsevi-
er and Springer publisher journals and has numerous
peer reviewed impact factor papers to her credit.
BIOGRAPHY