Botany and Microbiology Department, Faculty of Science, Al-Azhar University, Nasr City, 11884, Cairo, Egypt.
Appl Biochem Biotechnol. 2024 Jan;196(1):85-98. doi: 10.1007/s12010-023-04482-1. Epub 2023 Apr 26.
New and creative methodologies for the fabrication of silver nanoparticles (Ag-NPs), which are exploited in a wide range of consumer items, are of significant interest. Hence, this research emphasizes the biological approach of Ag-NPs through Egyptian henna leaves (Lawsonia inermis Linn.) extracts and analysis of the prepared Ag-NPs. Plant extract components were identified by gas chromatography mass spectrometry (GC-mass). The analyses of prepared Ag-NPs were carried out through UV-visible (UV-Vis), X-ray diffraction (XRD), transmission electron microscope (TEM), scanning electron microscope (SEM), and Fourier transform infrared (FTIR) analysis. UV-Vis reveals that Ag-NPs have a maximum peak at 460 nm in visible light. Structural characterization recorded peaks that corresponded to Bragg's diffractions for silver nano-crystal, with average crystallite sizes varying from 28 to 60 nm. Antibacterial activities of Ag-NPs were examined, and it is observed that all microorganisms are very sensitive to biologically synthesized Ag-NPs.
新型和创新的银纳米粒子(Ag-NPs)制造方法在广泛的消费品中得到了应用,这引起了人们的极大兴趣。因此,本研究强调了通过埃及指甲花(Lawsonia inermis Linn.)提取物和制备的 Ag-NPs 分析来实现 Ag-NPs 的生物方法。通过气相色谱质谱联用仪(GC-MS)鉴定植物提取物成分。通过紫外可见分光光度计(UV-Vis)、X 射线衍射(XRD)、透射电子显微镜(TEM)、扫描电子显微镜(SEM)和傅里叶变换红外光谱(FTIR)分析对制备的 Ag-NPs 进行分析。UV-Vis 显示 Ag-NPs 在可见光下的最大峰值为 460nm。结构特征记录的峰与银纳米晶体的布拉格衍射相对应,平均晶粒尺寸在 28 至 60nm 之间变化。Ag-NPs 的抗菌活性也进行了检测,结果表明所有微生物对生物合成的 Ag-NPs 都非常敏感。