Wide application of nanoparticles motivates the need for synthesising them. Here, a nontoxic, eco-friendly, and cost-effective method has been established for the synthesis of silver nanoparticles using extracts of lemon peel (Citrus limon), green orange peel (Citrus sinensis), and orange peel (Citrus tangerina). The synthesised nanoparticles have been characterised using UV-visible absorptionspectroscopy, Fourier transform infrared spectroscopy, and transmission electron microscopy (TEM). The UV-visible absorption spectrum of these synthesised silver nanoparticles shows an absorption peak at around 440 nm. TEM images show different shaped particles with various sizes. Furthermore, the antibacterial activity of silver nanoparticles was appraised by a well-diffusion method and it was observed that the green synthesised silver nanoparticles have an effective antibacterial activity against Escherichia coli and Staphylococcus aureus. The outcome of this study could be beneficial for nanotechnology-based biomedical applications.

中文翻译：

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从桔皮，柑桔和柠檬柠檬的果皮提取物中绿色合成银纳米粒子具有抗菌活性

纳米粒子的广泛应用激发了对其进行合成的需求。在这里，已经建立了一种无毒，环保且具有成本效益的方法，该方法可以使用柠檬皮（Citrus limon），绿橙皮（Citrus sinensis）和橙皮（Citrus tangerina）的提取物合成银纳米颗粒。）。合成的纳米粒子已使用紫外可见吸收光谱，傅立叶变换红外光谱和透射电子显微镜（TEM）进行了表征。这些合成的银纳米颗粒的UV-可见吸收光谱在约440nm处显示吸收峰。TEM图像显示具有各种尺寸的不同形状的颗粒。此外，通过良好的扩散方法评价了银纳米颗粒的抗菌活性，并且观察到绿色合成的银纳米颗粒对大肠杆菌和金黄色葡萄球菌具有有效的抗菌活性。这项研究的结果可能有益于基于纳米技术的生物医学应用。