Aqueous Stable Silver Nanoparticles Derived from Nimble Leaves of Psidium Guajava _ Crimson Publishers

 Aqueous Stable Silver Nanoparticles Derived from Nimble Leaves of Psidium Guajava by Keyur D Bhatt* in Integrative Journal of Conference Proceedings_ Integrative Journal of Conference Proceedings

 

Abstract
Here, we report the synthesis of silver nanoparticles (AgNPs) by utilizing extract of Psidium guajava. In this study leaf was with extricated alcohol, further this extract is utilized for the preparation of nanoparticles followed by treatment with silver nitrate solution. Color change from colorless to dark-yellow and SPR band (UV-Vis) 420nm which indicates the synthesis of plant reduced silver nanoparticles. The presences of proteins as capping agent, which increase the stability of AgNPs in the colloids, are characterized by Fourier transform infrared spectroscopy (FTIR). Transmission electron microscopy (TEM) demonstrated the presence at spherical AgNPs in the range of 15-30nm. The bactericidal activity of standard antibiotics was essentially expanded in the presence of AgNPs against pathogenic bacteria, S Aureus, Staphylococcus, E Coli, P Putida and fungus A Niger.

Introduction
A nanoparticle is a substance with a size of 1-100nm; containing tens to thousands of particles. The interfacial level generally comprises inorganic and organic particles [1]. The prefix word nano commonly used for particles that have size up to several nanometers [2]. The national nanotechnology initiative defined the nanoparticle as structures have size ranging from 1-100nm in at smallest amount one dimension [3]. Nanoparticles can be easily synthesized utilizing different strategies by different methodologies accessible for the synthesis of nanoparticles includes chemical, physical biological metal to synthesize nanoparticles. Nanoparticles are various types. Organic nanoparticles which involve carbon nanoparticles and inorganic nanoparticles involve magnetic nanoparticles, noble nanoparticles like gold and silver and semi-conductor nanoparticles like titanium oxide and zinc oxide. Green synthesis furnish progress over chemical as well as physical techniques it is prize effective, environment friendly, easily scaled for bigger scale synthesis and this strategy no compelling reason utilize high pressure, energy, temperature and harmful materials [4]. Nanoparticles assume a vital part in drug delivery, sensing, gene delivery, artificial implants, diagnostics imaging, and tissue engineering.

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