Green biogenic nanoparticles have medicinal applications. The aim of this study was to use silver nitrate solution to carry out plant-mediated synthesis of silver (Ag) nanoparticles (AgNPs) in aqueous extracts of Bistorta affinis and Malcolmia cabulica. The purpose of using the aqueous medium was for it to act as a reducing agent, as well as a capping agent. The synthesized AgNPs were confirmed through ultraviolet–visible (UV–vis) spectroscopy and analyzed through X-ray diffractometry (XRD), energy-dispersive X-ray (EDX) analysis, scanning electron microscopy (SEM) and transmission electron microscopy (TEM). It was observed from the AgNPs’ visual spectrum obtained from UV–vis spectroscopy that their surface plasmon resonance had a peak at 420 nm for B. affinis and at 430 nm for M. cabulica. SEM revealed spherical monodispersed nanoparticles with diameters ranging from 10 to 30 nm. The SEM results were confirmed by TEM analysis. The XRD showed the crystalline nature of the synthesized AgNPs. EDX confirmed the existence of silver in both types of synthesized AgNPs. Thermogravimetric and differential thermal analyses were performed. AgNPs showed significant cytotoxic effect of 84% against Artemia salina at a high concentration for B. affinis and 82% for M. cabulica. AgNPs showed good antioxidant and phytotoxic effects, while phytolectins were absent.

中文翻译：

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Bistorta affinis和Malcolmia cabulica提取物合成银纳米颗粒的合成，表征和药理活性

绿色生物纳米颗粒具有医学应用。这项研究的目的是使用硝酸银溶液在Bistorta affinis和Malcolmia cabulica的水提物中进行植物介导的银（Ag）纳米粒子（AgNPs）的合成。使用水性介质的目的是使其充当还原剂和封端剂。合成的AgNPs通过紫外-可见（UV-vis）光谱进行了确认，并通过X射线衍射（XRD），能量色散X射线（EDX）分析，扫描电子显微镜（SEM）和透射电子显微镜（TEM）进行了分析。 。从紫外可见光谱获得的AgNP的可见光谱中观察到，它们的表面等离子体共振在B. affinis的420 nm处有一个峰。对于毛分枝杆菌在430 nm处。SEM显示球形的单分散纳米颗粒，直径范围为10到30 nm。SEM结果通过TEM分析确认。XRD显示合成的AgNP的晶体性质。EDX证实了两种合成的AgNP中都存在银。进行了热重分析和差热分析。的AgNPs显示出对84％显著的细胞毒性作用卤虫以高浓度用于B. affinis的和为82％M. cabulica。AgNPs显示出良好的抗氧化和植物毒性作用，而缺少植物凝集素。