Kiruba Daniel
Phone: +919206639588, +919442330984
Address: Department of Applied Physics and Instrumentation,
Indian Institute of Science
Bangalore - 560012
Address: Department of Applied Physics and Instrumentation,
Indian Institute of Science
Bangalore - 560012
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Papers by Kiruba Daniel
and formulated. This is one of the successive methods for trace level determination of DA and will be going to a significant material for designing biosensor to determine DA in real extracellular body fluids.
diseases was attempted using silver nanoparticles. The uptake of silver nanoparticles and the biochemical
changes were studied and their resultant toxicity was also studied. The starch stabilized silver
nanoparticles could penetrate all tissues including the brain through Blood Brain Barrier. The results also
demonstrated a cure from red spot and white spot diseases within 3days without showing any toxicity.
The fishes showed immediate cure from infection and the infection was not observedfor more than one
year till the death of the fish and hence a one time dose may give life long protection at very low
concentration (10ng/g body weight) by simple bathing method. This is the first report on silver
nanoparticle treatment for protozoan and fungal infection in fishes (Patent application 2267/CHE/2012).
water treatment. Metal nanoparticles, especially silver, copper and zero valent
iron nanoparticles, have the properties of microbe inactivation and heavy metal
removal. In this chapter we will be focusing on the role of hybrid metallic copper, silver and iron nanoparticles in wastewater treatment due to their ability for antimicrobial
activities and removal of various pollutants. In our previous studies we have treated wastewater, textile and tannery effl uents using such multifunctional hybrid nanoparticles. We will also be discussing the existing multifunctional metal nanoparticle products available for wastewater treatment and new variations being made by researchers around the world.
Cassia auriculata flower extract and their antibacterial activity was tested against various clinical pathogens such
as Escherichia coli, Staphylococcus aureus, Pseudomonas aeruginosa, and Staphylococcus epidermidis. An ecofriendly
method was followed for the biosynthesis of AgNPs using C. auriculata flower extract as a reducing agent
15 at room temperature. The effect of different concentrations of flower extract and the various pH conditions of the
reaction medium toward the formation of NPs were studied. Surface plasmon resonance peaks were obtained from
403 nm to 428 nm. Further, the synthesized NPs were characterized by dynamic light scattering particle size
analysis, Zeta potential analysis, atomic force microscope, and high-resolution transmission electron microscopic
analysis.
(ZVI), and silver nanoparticles using leaf extract of
Dodonaea viscosa has been investigated in this report.
There are no additional surfactants/polymers used as
capping or reducing agents for these syntheses. The
synthesized nanoparticles were characterized by UV–
Vis spectroscopy, X-ray diffraction, atomic force
microscopy, and high-resolution transmission electron
microscopy. The phase analysis was performed using
selected area electron diffraction. The pH dependence
of surface plasmon resonance and subsequent size
variation has been determined. The synthesized
nanoparticles showed spherical morphology and the
average size of 29, 27, and 16 nm for Cu, ZVI, and Ag
nanoparticles, respectively. Finally, biosynthesized
Cu, ZVI, and Ag nanoparticles were tested against
human pathogens viz. Gram-negative Escherichia
coli, Klebsiella pneumonia, Pseudomonas fluorescens
and Gram-positive Staphylococcus aureus and Bacillus
subtilis, and showed good antimicrobial activity.
rats showed no toxicity and revealed their distribution in various tissues and permeability across BBB. This
starch stabilized silver nanoparticles have good biological characteristics to act as a potential promising
vector for gene/drug delivery.
and formulated. This is one of the successive methods for trace level determination of DA and will be going to a significant material for designing biosensor to determine DA in real extracellular body fluids.
diseases was attempted using silver nanoparticles. The uptake of silver nanoparticles and the biochemical
changes were studied and their resultant toxicity was also studied. The starch stabilized silver
nanoparticles could penetrate all tissues including the brain through Blood Brain Barrier. The results also
demonstrated a cure from red spot and white spot diseases within 3days without showing any toxicity.
The fishes showed immediate cure from infection and the infection was not observedfor more than one
year till the death of the fish and hence a one time dose may give life long protection at very low
concentration (10ng/g body weight) by simple bathing method. This is the first report on silver
nanoparticle treatment for protozoan and fungal infection in fishes (Patent application 2267/CHE/2012).
water treatment. Metal nanoparticles, especially silver, copper and zero valent
iron nanoparticles, have the properties of microbe inactivation and heavy metal
removal. In this chapter we will be focusing on the role of hybrid metallic copper, silver and iron nanoparticles in wastewater treatment due to their ability for antimicrobial
activities and removal of various pollutants. In our previous studies we have treated wastewater, textile and tannery effl uents using such multifunctional hybrid nanoparticles. We will also be discussing the existing multifunctional metal nanoparticle products available for wastewater treatment and new variations being made by researchers around the world.
Cassia auriculata flower extract and their antibacterial activity was tested against various clinical pathogens such
as Escherichia coli, Staphylococcus aureus, Pseudomonas aeruginosa, and Staphylococcus epidermidis. An ecofriendly
method was followed for the biosynthesis of AgNPs using C. auriculata flower extract as a reducing agent
15 at room temperature. The effect of different concentrations of flower extract and the various pH conditions of the
reaction medium toward the formation of NPs were studied. Surface plasmon resonance peaks were obtained from
403 nm to 428 nm. Further, the synthesized NPs were characterized by dynamic light scattering particle size
analysis, Zeta potential analysis, atomic force microscope, and high-resolution transmission electron microscopic
analysis.
(ZVI), and silver nanoparticles using leaf extract of
Dodonaea viscosa has been investigated in this report.
There are no additional surfactants/polymers used as
capping or reducing agents for these syntheses. The
synthesized nanoparticles were characterized by UV–
Vis spectroscopy, X-ray diffraction, atomic force
microscopy, and high-resolution transmission electron
microscopy. The phase analysis was performed using
selected area electron diffraction. The pH dependence
of surface plasmon resonance and subsequent size
variation has been determined. The synthesized
nanoparticles showed spherical morphology and the
average size of 29, 27, and 16 nm for Cu, ZVI, and Ag
nanoparticles, respectively. Finally, biosynthesized
Cu, ZVI, and Ag nanoparticles were tested against
human pathogens viz. Gram-negative Escherichia
coli, Klebsiella pneumonia, Pseudomonas fluorescens
and Gram-positive Staphylococcus aureus and Bacillus
subtilis, and showed good antimicrobial activity.
rats showed no toxicity and revealed their distribution in various tissues and permeability across BBB. This
starch stabilized silver nanoparticles have good biological characteristics to act as a potential promising
vector for gene/drug delivery.