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首页> 外文期刊>The Korean journal of chemical engineering >Rapid biological synthesis of silver nanoparticles using Kalopanax pictus plant extract and their antimicrobial activity
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Rapid biological synthesis of silver nanoparticles using Kalopanax pictus plant extract and their antimicrobial activity

机译：Kalopanax pictus植物提取物快速生物合成银纳米颗粒及其抗菌活性

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摘要

Silver nanoparticles (AgNPs) have promising potential in biomedicine, energy science, optics, and health care applications. We synthesized AgNPs using plant, Kalopanax pictus leaf extract. UV-visible spectrophotometric study showed the characteristic peak for AgNPs at wavelength 430 nm. The optical density at 430 nm increased after addition of plant leaf extract, indicating increase in formation of nanoparticles. Comparative time course analyses for AgNP synthesis carried out at different reaction temperatures (20, 60, and 90 degrees C) revealed higher reaction rate for K. pictus than Magnolia kobus plant leaf extract, which showed highest AgNP synthesis rate in the previous report. Electron microscopy analyses confirmed the presence of well dispersed AgNPs, predominantly with spherical shapes. In transmission electron microscopy, the particle size decreased with increase in temperature. Electron dispersive X-ray spectroscopy analyses indicated that Ag content increased with increase in reaction temperature. Fourier transform-infrared spectroscopy studies revealed capping of bioorganics from plant to the synthesized AgNPs. The antimicrobial activity of the synthesized AgNPs against Escherichia coli increased with increase in reaction temperature. The observations in this study will prove beneficial in approaching rapid synthesis of AgNPs and their antimicrobial application.
机译：银纳米颗粒（AgNPs）在生物医学，能源科学，光学和医疗保健应用中具有广阔的发展潜力。我们使用植物Kalopanax pictus叶提取物合成了AgNP。紫外可见分光光度法研究显示AgNPs在430 nm波长处具有特征峰。添加植物叶提取物后，430 nm处的光密度增加，表明纳米颗粒形成增加。在不同的反应温度（20、60和90摄氏度）下进行AgNP合成的比较时程分析表明，苦瓜的反应速率比木兰植物叶片提取物高，而在以前的报告中显示出最高的AgNP合成速率。电子显微镜分析证实存在分散良好的AgNP，主要为球形。在透射电子显微镜中，粒径随温度升高而减小。电子弥散X射线光谱分析表明，Ag含量随反应温度的升高而增加。傅立叶变换红外光谱研究表明，从植物到合成的AgNPs的生物有机物均被封端。合成的AgNPs对大肠杆菌的抗菌活性随反应温度的升高而增加。这项研究中的观察结果将证明对快速合成AgNPs及其抗菌应用有益。

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