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ABSTRACT
The present study aimed to develop a green synthesis method for the fabrication of Ag NPs, ZnO NPs, and Ag/ZnO nanocomposite using Achillea milfolium plant extract with antibacterial activities. Both growth inhibition and minimum inhibitory concentration assays were used to assess the antibacterial activity of nanostructures against Pseudomonas aeruginosa, Escherichia coli, Bacillus cereus and Staphylococcus aureus pathogens. According to the obtained data, Ag/ZnO nanocomposite in 2 mM concentration showed the most antibacterial activity against E. coli with an inhibition zone of 24 ± 0.58 mm. It was also revealed that the Ag/ZnO nanocomposite showed better antibacterial activity in comparison with pure Ag and ZnO nanoparticles. Ag/ZnO nanocomposite-loaded cotton fiber showed great antibacterial activity (more than 95% reduction in S. aureus population) even after 20 cycles of standard washing, proving the stability durability of the nanostructures on the textile. The fabricated textile loaded with Ag/ZnO nanocomposite has potential applications in the production of antibacterial textiles.
摘要
本研究旨在开发一种绿色合成方法,利用具有抗菌活性的阿喀琉叶植物提取物制备Ag纳米颗粒、ZnO纳米颗粒和Ag/ZnO纳米复合材料. 生长抑制和最低抑制浓度测定均用于评估纳米结构对铜绿假单胞菌、大肠杆菌、蜡样芽孢杆菌和金黄色葡萄球菌病原体的抗菌活性. 根据获得的数据,2mM浓度的Ag/ZnO纳米复合材料对大肠杆菌的抗菌活性最强。大肠杆菌,其抑制区为24±0.58mm. 与纯Ag和ZnO纳米颗粒相比,Ag/ZnO纳米复合材料具有更好的抗菌活性. 即使经过 20 次标准洗涤循环后,负载 Ag/ZnO 纳米复合材料的棉纤维仍表现出很强的抗菌活性(金黄色葡萄球菌数量减少 95% 以上),证明了纳米结构在纺织品上的稳定性和耐久性. 所制备的Ag/ZnO纳米复合材料在抗菌纺织品的生产中具有潜在的应用前景.