<i>Syzygium aromaticum</i>L. (Clove) Essential Oil as a Reducing Agent for the Green Synthesis of Silver Nanoparticles

• 作者: Aline da Rosa Almeida Ana Paula Zapelini de Melo Carolina Montanheiro Noronha Cleonice Gon?alves da Rosa Daniele Ziglia de Freitas Gerson Lopes Teixeira Matheus Vinicius de Oliveira Brisola Maciel Michelle Heck Machado Pedro Luiz Manique Barreto Rafael Dutra de Armas
• 来源期刊: 应用科学(英文)
• 学科: 化学
• 关键词: Essential Oil CLOVE EUGENOL Silver Nanoparticles ANTIBACTERIAL Activity
• 年，卷（期）: 2019,（2）
• 页码范围: 45-54
• 页数: 10页
• 分类号: O6

摘要

The present investigation details a green synthesis of silver nanoparticles (AgNP) using the essential oil of Syzygium aromaticum L. (clove) as reducing agent, which is a matrix with a high content of eugenol, an important compound for the reducing action of silver nitrate. The synthesis of AgNP was performed at different pH conditions (pH 7, 8, 9 and 10), and was monitored by UV-Vis Spectroscopy, Dynamic Light Scattering (DLS) and Transmission Electron Microscopy. The synthesized nanoparticles presented characteristic Surface Plasmon Resonance bands with maximum absorbance between 405 and 460 nm. The DLS analysis revealed particle sizes from 31 to 72 nm and zeta potential between -30.1 and -50.8 mV indicating good stability against the agglomeration of the particles in solution. The micrographs obtained by TEM showed different particle shapes and a predominance of spherical-shaped nanoparticles, and average size ranging from 27 to 94 nm. The clove-based silver nanoparticles were efficient in controlling the growth of Escherichia coli and Staphylococcus aureus bacteria, and the minimum inhibitory concentration ranged from 60 to 100 μL/mL. This study highlights the feasibility of clove essential oil as an alternative for the synthesis of silver nanoparticles by a simple, inexpensive and eco-friendly method.