Department of Chemical Engineering, Materials, and Environment, Sapienza University, Via Eudossiana 18, 00184 Roma, Italy.
Department of Environmental Sciences, Universidad Francisco de Paula Santander, Av. Gran Colombia No. 12E-96, Cúcuta 540003, Colombia.
Int J Mol Sci. 2024 Nov 3;25(21):11809. doi: 10.3390/ijms252111809.
The biosynthesis of silver nanoparticles (AgNPs) presents an innovative and sustainable approach in nanotechnology with promising applications in fields such as medicine, food safety, and pharmacology. In this study, AgNPs were successfully synthesized using the probiotic strain (BCRC16000), addressing challenges related to stability, biocompatibility, and scalability that are common in conventional nanoparticle production methods. The formation of AgNPs was indicated by a color change from yellow to brown, and UV-visible spectrophotometry confirmed their presence with a characteristic absorption peak at 443 nm. Furthermore, Fourier transform infrared (FTIR) spectroscopy revealed the involvement of biomolecules in reducing silver ions, which suggests their role in stabilizing the nanoparticles. In addition, field emission scanning electron microscopy (FE-SEM) showed significant morphological and structural changes. At the same time, dynamic light scattering (DLS) and zeta potential analyses provided valuable insights such as average size (199.7 nm), distribution, and stability, reporting a polydispersity index of 0.239 and a surface charge of -36.3 mV. Notably, the AgNPs demonstrated strong antibacterial activity and photocatalytic efficiency, underscoring their potential for environmental and biomedical applications. Therefore, this study highlights the effectiveness of in the biosynthesis of AgNPs, offering valuable antibacterial and photocatalytic properties with significant industrial and scientific implications.
采用益生菌菌株（BCRC16000）成功合成了银纳米粒子（AgNPs），为纳米技术提供了一种创新且可持续的方法，在医学、食品安全和药理学等领域具有广阔的应用前景。在这项研究中，成功合成了银纳米粒子（AgNPs），采用益生菌菌株（BCRC16000）成功合成了银纳米粒子（AgNPs），解决了常规纳米粒子生产方法中存在的稳定性、生物相容性和可扩展性等挑战。AgNPs 的形成表现为颜色从黄色变为棕色，紫外-可见分光光度法证实了其存在，特征吸收峰在 443nm 处。此外，傅里叶变换红外（FTIR）光谱表明生物分子参与了还原银离子的过程，这表明它们在稳定纳米粒子方面发挥了作用。此外，场发射扫描电子显微镜（FE-SEM）显示出显著的形态和结构变化。同时，动态光散射（DLS）和zeta 电位分析提供了有价值的信息，如平均粒径（199.7nm）、分布和稳定性，报告的多分散指数为 0.239，表面电荷为-36.3mV。值得注意的是，AgNPs 表现出很强的抗菌活性和光催化效率，突出了其在环境和生物医学应用方面的潜力。因此，本研究强调了 在 AgNPs 生物合成中的有效性，提供了有价值的抗菌和光催化性能，具有重要的工业和科学意义。
