Antibacterial effects of biosynthesized silver nanoparticles using aqueous leaf extract of Rosmarinus officinalis L. |
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| Affiliation: | 1. Experimental Physics V, Center for Electronic Correlations and Magnetism, University of Augsburg, D-86159 Augsburg, Germany;2. Resource Strategy, University of Augsburg, D-86159 Augsburg, Germany;3. Solid State Chemistry, Martin-Luther University Halle-Wittenberg, D-06099 Halle, Germany;1. Department of Materials Science and Engineering, Suzuka National College of Technology, Shiroko, Suzuka, Mie 510-0294, Japan;2. Department of Applied Chemistry, College of Life Sciences, Ritsumeikan University, 1-1-1 Noji-higashi, Kusatsu, Shiga 525-8577, Japan;1. Department of Instrumentation Science, USIC Building, Jadavpur University, Calcutta 700 032, India;2. UGC-DAE CSR, Kalpakkam Node, Kokilamedu 603104, India;3. CSIR-National Physical Laboratory, Dr. K.S. Krishnan Road, New Delhi 110 012, India;1. Laboratory of Infrared Materials and Devices, The Advanced Technology Research Institute, Ningbo University, Ningbo 315211, China;2. School of Materials Science and Chemical Engineering, Ningbo University, Ningbo 315211, China;3. Key Laboratory for Ultrafine Materials of Ministry of Education, School of Materials Science and Engineering, East China University of Science and Technology, Shanghai 200237, China |
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| Abstract: | In this study, we demonstrate a green approach for the synthesis of silver nanoparticles (AgNPs) using aqueous leaf extract of Rosmarinus officinalis under ambient conditions. The uniqueness of this method lies in its rapid synthesis within 15 min. The synthesized AgNPs were characterized using UV–vis, FTIR, XRD, FE-SEM coupled with EDX, TEM and AFM. The synthesized particles were found to be 14.20–42.42 nm with face centered cubic geometry. The functional group of flavonoids and terpenoids was largely identified by FTIR which was found to be responsible for the synthesis and stabilization of the AgNPs. Further, antibacterial efficacy of the biologically synthesized AgNPs was investigated by the standard method against Pseudomonas aeruginosa and Staphylococcus aureus. The results showed that the aqueous leaf extract mediated synthesized AgNPs is an excellent antibacterial agent against clinical pathogens. |
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| Keywords: | A Metals C Atomic force microscopy C X-ray diffraction C Transmission electron microscopy (TEM) |
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