Green synthesis of silver nanoparticles usingZea maysand exploration of its biological applications.
The biosynthesis of silver nanoparticles (AgNPs) has been proved to be a cost effective and environmental friendly approach toward chemical and physical methods. In the present study, biosynthesis of AgNPs was carried out using aqueous extract ofZea mays(Zm) husk. The initial colour change from golden yellow to orange was observed between 410 and 450 nm which confirmed the synthesis of AgNPs. Also, dynamic light scattering-particle size analysis confirmed the average size to be 113 nm and zeta potential value of -28 kV. The morphology of synthesisedZmAgNPs displayed flower-shaped structure, X-ray diffraction pattern revealed the strongest peaks at 2θ= 38.6° and 64° which proved that the nanoparticle has the face centred crystalline structure. The Fourier transform infrared spectroscopy results showed strong absorption bands at 1394.53, 2980.02 and 2980.02 cm-1due to the presence of alkynes, carboxylic acids, alcoholic and phenolic groups. The maximum zone of inhibition was observed againstSalmonella typhi(22 mm) andCandida albicans(18 mm). The synthesised nanoparticles exhibited more free radical scavenging activity than the aqueous plant extract. This is the first report on the synthesis of AgNP fromZmhusk, delivers the efficient and stableZmAgNPs through simple feasible approach toward green biotechnology.
Department of Biotechnology, School of Biotechnology and Health Sciences, Karunya University, Karunya Nagar, Coimbatore 641 114, India.
Jerusha A
JA
Hema
Department of Biotechnology, School of Biotechnology and Health Sciences, Karunya University, Karunya Nagar, Coimbatore 641 114, India.
Rajkumari
R
Malaka
Department of Biotechnology, School of Biotechnology and Health Sciences, Karunya University, Karunya Nagar, Coimbatore 641 114, India.
Narayanan P
NP
Muthukumarasamy
Department of Physics, Faculty of Science, Annamalai University, Annamalai Nagar, Chidambaram 608 002, India.
Akilandeswari
A
Sambandam
Department of Biotechnology, School of Biotechnology and Health Sciences, Karunya University, Karunya Nagar, Coimbatore 641 114, India.
Subakanmani
S
Subramanian
Department of Biotechnology, School of Biotechnology and Health Sciences, Karunya University, Karunya Nagar, Coimbatore 641 114, India. micromurugans@gmail.com.
Murugan
M
Sevanan
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