PDF(Pubmed)
Abstract：
Simple low-cost, nontoxic, environmentally friendly plant-extract-based polymer films play an important role in their application in medicine, the food industry, and agriculture. The addition of silver nanoparticles to the composition of these films enhances their antimicrobial capabilities and makes them suitable for the treatment and prevention of infections. In this study, polymer-based gels and films (AgRonPVA) containing silver nanoparticles (AgNPs) were produced at room temperature from fresh red onion peel extract (\"Ron\"), silver nitrate, and polyvinyl alcohol (PVA). Silver nanoparticles were synthesized directly in a polymer matrix, which was irradiated by UV light. The presence of nanoparticles was approved by analyzing characteristic local surface plasmon resonance peaks occurring in UV-Vis absorbance spectra of irradiated experimental samples. The proof of evidence was supported by the results of XRD and EDX measurements. The diffusion-based method was applied to investigate the antimicrobial activity of several types of microbes located in the environment of the produced samples. Bacteria Staphylococcus aureus ATCC 29213, Acinetobacter baumannii ATCC BAA 747, and Pseudomonas aeruginosa ATCC 15442; yeasts Candida parapsilosis CBS 8836 and Candida albicans ATCC 90028; and microscopic fungi assays Aspergillus flavus BTL G-33 and Aspergillus fumigatus BTL G-38 were used in this investigation. The greatest effect was observed on Staphylococcus aureus, Acinetobacter baumannii, and Pseudomonas aeruginosa bacteria, defining these films as potential candidates for antimicrobial applications. The antimicrobial features of the films were less effective against fungi and the weakest against yeasts.
摘要：
简单低成本，无毒,环境友好的植物提取物基聚合物膜在其在医学中的应用中起着重要作用，食品工业,和农业。向这些膜的组合物中添加银纳米颗粒增强了它们的抗微生物能力,并使它们适于治疗和预防感染。在这项研究中,含有银纳米颗粒（AgNPs）的聚合物基凝胶和薄膜（AgRonPVA）在室温下从新鲜的红洋葱皮提取物（“罗恩”），硝酸银,和聚乙烯醇（PVA）。在聚合物基质中直接合成银纳米粒子,用紫外线照射。通过分析在辐照的实验样品的UV-Vis吸收光谱中出现的特征局部表面等离子体共振峰,证实了纳米颗粒的存在。XRD和EDX测量的结果支持了证据的证明。基于扩散的方法用于研究位于生产样品环境中的几种微生物的抗菌活性。细菌金黄色葡萄球菌ATCC29213，鲍曼不动杆菌ATCCBAA747和铜绿假单胞菌ATCC15442；酵母念珠菌CBS8836和白色念珠菌ATCC90028；以及显微镜真菌测定在此调查中使用了黄曲霉BTLG-33和烟曲霉BTLG-38。对金黄色葡萄球菌的影响最大，鲍曼不动杆菌,铜绿假单胞菌,将这些膜定义为抗微生物应用的潜在候选物。薄膜的抗微生物特性对真菌的作用较差，对酵母的作用较弱。
