■研究人员越来越倾向于在金属纳米颗粒的合成中使用生物资源。该合成过程快速且经济实惠。当前的研究检查了源自Neuradaprocumbens植物的银纳米颗粒(AgNPs)的抗菌和抗癌作用。源自天然来源的生物分子可用于包被AgNP以使其生物相容。
■UV-Vis光谱用于验证从Neuradaprocumbens植物提取物中合成AgNPs,而透射电子显微镜(TEM),光致发光(PL)光谱,动态光散射(DLS),用傅里叶变换红外光谱(FTIR)对其形貌进行表征,晶体结构,稳定性,和涂层。
■AgNPs的紫外可见光谱在422nm处显示出吸收峰,表明这些纳米粒子的各向同性性质。由于在样品中原子发出的红外光的光谱中在804.53和615.95cm-1处出现了透射峰,FTIR光谱表明Ag拉伸振动模式为金属-氧(M-O)。电子色散X射线(EDX)光谱分析表明,元素银在3keV处具有峰。用电子照射银表面,光子,或激光束触发照明。已发现发射峰位置在300和550nm之间。作为DLS分析的结果,悬浮颗粒表现出双峰尺寸分布,其Z平均粒径为93.38nm。
■研究结果表明,AgNPs对Gramme阳性菌株的抗菌作用明显(p≤0.05)(S.金黄色葡萄球菌和蜡样芽孢杆菌)比大肠杆菌。AgNP的生物合成是制造具有抗微生物和抗癌性质的纳米结构的环境友好的方法。
UNASSIGNED: Researchers are increasingly favouring the use of biological resources in the synthesis of metallic nanoparticles. This synthesis process is quick and affordable. The current study examined the antibacterial and anticancer effects of silver nanoparticles (AgNPs) derived from the Neurada procumbens plant. Biomolecules derived from natural sources can be used to coat AgNPs to make them biocompatible.
UNASSIGNED: UV-Vis spectroscopy was used to verify the synthesis of AgNPs from Neurada procumbens plant extract, while transmission electron microscopy (TEM), photoluminescence (PL) spectroscopy, dynamic light scattering (DLS), and Fourier transform infrared spectroscopy (FTIR) were used to characterize their morphology, crystalline structure, stability, and coating.
UNASSIGNED: UV-visible spectrum of AgNPs shows an absorption peak at 422 nm, indicating the isotropic nature of these nanoparticles. As a result of the emergence of a transmission peak at 804.53 and 615.95 cm-1 in the spectrum of the infrared light emitted by atoms in a sample, FTIR spectroscopy demonstrated that the Ag stretching vibration mode is metal-oxygen (M-O). Electron dispersive X-ray (EDX) spectral analysis shows that elementary silver has a peak at 3 keV. Irradiating the silver surface with electrons, photons, or laser beams triggers the illumination. The emission peak locations have been found between 300 and 550 nm. As a result of DLS analysis, suspended particles showed a bimodal size distribution, with their Z-average particle size being 93.38 nm.
UNASSIGNED: The findings showed that the antibacterial action of AgNPs was substantially (p≤0.05) more evident against Gramme-positive strains (S. aureus and B. cereus) than E. coli. The biosynthesis of AgNPs is an environmentally friendly method for making nanostructures that have antimicrobial and anticancer properties.