GREEN SYNTHESIS AND CHARACTERIZATION OF SILVER NANOPARTICLES AND THEIR ANTIBACTERIAL ACTIVITY

Author (s) : S.RAMYA

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Abstract :
Silver nanoparticles (AgNPs) have gained significant attention in various fields due to their unique properties and potential applications, particularly in the biomedical and environmental sectors. In recent years, green synthesis methods have emerged as a promising and eco-friendly alternative to conventional chemical approaches for the production of AgNPs. This abstract highlights the green synthesis of silver nanoparticles using natural extracts or plant-based reducing agents and the subsequent characterization of these nanoparticles for their antibacterial activity. The green synthesis process involves the use of plant extracts, such as those from medicinal plants, fruits, or leaves, which act as reducing and stabilizing agents for the formation of AgNPs. The process is environmentally benign, cost-effective, and offers a sustainable approach to nanoparticle synthesis. Various techniques, including UV-Vis spectroscopy, X-ray diffraction (XRD), transmission electron microscopy (TEM), Fourier-transform infrared spectroscopy (FTIR), and dynamic light scattering (DLS), are employed to characterize the synthesized AgNPs. The antibacterial activity of the green-synthesized AgNPs is investigated against a range of bacterial strains, including both Gram-positive and Gram-negative bacteria. The AgNPs' size, shape, and surface properties are considered crucial factors influencing their antibacterial potential. The antibacterial efficacy of these nanoparticles is evaluated by determining the minimum inhibitory concentration (MIC) and minimum bactericidal concentration (MBC). Overall, this study highlights the importance of green synthesis as an eco-friendly and sustainable method for the production of silver nanoparticles and underscores their significant antibacterial potential. The utilization of plant-based reducing agents not only contributes to the development of nanotechnology but also opens new avenues for the application of green nanomaterials in diverse fields, including medicine, agriculture, and environmental remediation. Further research in this area holds promise for the development of novel and effective antimicrobial agents with a reduced environmental impact.

Keywords : Silver nanoparticles, MIC, MBC

Conference Date : 13/11/2020

Pages : 260

Paper ID : 20260