Green Synthesis of Silver Nanoparticles Using Nymphae odorata Extract Incorporated Films and Antimicrobial Activity
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ORIGINAL PAPER
Green Synthesis of Silver Nanoparticles Using Nymphae odorata Extract Incorporated Films and Antimicrobial Activity Apparao Gudimalla1,2,3 · Jiya Jose2 · Rajendran Jose Varghese2 · Sabu Thomas2 Accepted: 29 October 2020 © Springer Science+Business Media, LLC, part of Springer Nature 2020
Abstract Silver nanoparticles (AgNPs) synthesis was formulated by the green method using Nymphae odorata plant extract as reducing and capping agent. Plants offer a good platform for synthesizing nanoparticles (NPs) which can act as a non-toxic, natural capping/reducing agent and can convert A g+ to Ag0. The 5 min reduction time (the extract contains a lot of reduction agents, which leads to quick synthesis and such can be a great advantage) is a best experimental condition for the effective biological synthesis of AgNPs. Sodium alginate films were doped by these NPs. The antimicrobial study of AgNPs and doped films were examined by Staphylococcus aureus and Escherichia coli. As a result, at very low concentration of about 25 µl of AgNPs was found to inhibit the entire bacterial strains studied and films also showed a similar result. The results confirmed the effectiveness of prepared AgNPs and films as an antibacterial agent. Hence, it can be used for nano-biotechnology, biomedical and industrial applications. Keywords Green synthesis · Nanoparticles · Sodium alginate · Films · Antimicrobial activity
Introduction In recent years, nanotechnology has been widely used in a huge range of applications and several new disciplines in many areas. It deals with visualization, manipulation, and fabrication of materials at the nanoscale level [1]. In such a way, the Silver nanoparticles (AgNPs) have gained extensive awareness in the field of medicine, biotechnology, pharmacology, food packaging and energy storage [2]. Nano-biotechnology is a rapidly growing field as integration between biotechnology and nanotechnology for developing biosynthetic and eco-friendly technology to manufacture new materials at the nanoscale level [3]. The unique properties of nanomaterials have attracted significant attention for their pharmaceutical applications. Especially, in the field * Apparao Gudimalla [email protected]; [email protected] 1
Department of Nanotechnology, Acharya Nagarjuna University, Nagarjuna Nagar 522 510, A.P., India
2
International and Inter University Center for Nanoscience and Nanotechnology, Mahatma Gandhi University, Kottayam, Kerala 686560, India
3
Jožef Stefan International Postgraduate School, Jamova cesta 39, 1000 Ljubljana, Slovenia
of nano-medicine can play a significant role in developing alternative and more effective treatment strategies for the treatment of many diseases [4]. The fabrication of nanoparticles (NPs) conducts into two types of approaches such as top-down and bottom-up. NP synthesis usually uses laser ablation, pyrolysis, sol–gel, vapour deposition and electrodeposition. Various chemical and physical strategies are being used for NPs production. However, most of the techni
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