Avanz Bio Pvt. Ltd., M.E.S Road, East Tambaram, Chennai 600 059, Tamil Nadu, India.
Centre for Human & Organisational Resources Development (CHORD), Council of Scientific and Industrial Research - Central Leather Research Institute (CSIR-CLRI), Chennai 600020, Tamil Nadu, India.
IET Nanobiotechnol. 2019 May;13(3):339-344. doi: 10.1049/iet-nbt.2018.5237.
The silver nanoparticles (AgNPs) with their unique chemical and physical properties are proving as a new therapeutical agent. In the present study, the AgNPs synthesised from an aqueous extract of a macrofungus, , were characterised by field emission scanning electron microscopy (FESEM), energy dispersive X-ray analysis (EDX), high-resolution transmission electron microscopy, X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR) and further evaluate for its antibacterial and wound healing efficacy. The mycosynthesised AgNPs exhibited the surface plasmon resonance peak at 410 nm with good stability over a period of a month. The FESEM and EDX analyses revealed the spherical-shaped AgNPs of an average size of 20 nm and the presence of elemental Ag, respectively. The XRD pattern showed the crystalline nature of AgNPs. The FTIR spectra confirmed the conversion of Ag ions to AgNPs due to reduction by biomolecules of macrofungus extract. The mycosynthesised AgNPs showed effective antibacterial activity against two Gram-positive bacteria, namely and , and two Gram-negative bacteria and . The pathogens were highly sensitive to AgNPs, whereas less sensitive to AgNO. The mycosynthesised AgNPs showed significant wound healing potential with 68.58% of wound closure.
银纳米粒子(AgNPs)具有独特的化学和物理性质,被证明是一种新的治疗剂。在本研究中,从一种大型真菌的水提物中合成的 AgNPs 通过场发射扫描电子显微镜(FESEM)、能谱分析(EDX)、高分辨率透射电子显微镜、X 射线衍射(XRD)、傅里叶变换红外光谱(FTIR)进行了表征,并进一步评估了其抗菌和伤口愈合功效。所合成的 AgNPs 在一个月的时间内表现出良好的稳定性,其表面等离子体共振峰位于 410nm。FESEM 和 EDX 分析分别显示出平均尺寸为 20nm 的球形 AgNPs 和元素 Ag 的存在。XRD 图谱显示出 AgNPs 的结晶性质。FTIR 光谱证实了 Ag 离子由于真菌提取物中的生物分子的还原而转化为 AgNPs。所合成的 AgNPs 对两种革兰氏阳性菌,即 和 ,以及两种革兰氏阴性菌 和 表现出有效的抗菌活性。病原体对 AgNPs 高度敏感,而对 AgNO 的敏感性较低。所合成的 AgNPs 具有显著的伤口愈合潜力,其伤口闭合率为 68.58%。