真菌、藻类和细菌中纳米银的生物合成

Indranil Singh
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引用次数: 8

摘要

如今,纳米银粒子被认为是纳米技术产业的支柱。自古以来,银及其化合物和伴生盐一直与人类文明同行。虽然人们很早就知道银的存在,但纳米银的制备却直到最近才成为现实。它在医学、农业等领域有着突出而明显的应用。它具有非常有利和显著的抗氧化、抗菌和抗真菌性能。它已被发现对许多细菌有效,如副溶血性弧菌、克塞利柠檬酸杆菌、伤寒沙门氏菌、铜绿假单胞菌、金黄色葡萄球菌,甚至对白色念珠菌等少数真菌也有效。其机制可能是银离子与细胞内存在的生物分子结合。人们认为,整个系统运行的事实是,它导致自由基的形成以及活性氧的产生,最终导致细胞凋亡,从而使细胞无法再复制。有更多的应用范围从食品保鲜,化妆品等。但银的物理和化学合成效率低下,不能满足需求,同时对环境造成了很大的破坏。因此,它需要一个更清洁、高效和环保的过程。这一领域已经被植物、藻类和细菌等的银纳米粒子的生物合成所占领。这次审查审议了过去几年的这些努力。DOI: http://dx.doi.org/10.5281/zenodo.2617168
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Biosynthesis of Silver Nanoparticle from Fungi, Algae and Bacteria
Silver nanoparticles are today considered as the backbone of nanotechnology industries. Since time immemorial silver along with its compound and associated salts have been walking together with human civilization. Although the silver has been known from such a long time it has not been recently that fabrication of silver nanoparticle was to be a reality. It has some prominent as well as pronounced application in the field of medicine, agriculture etc. It has very favorable and significant antioxidant, antibacterial and antifungal properties. It has been found effective against many of bacteria’s such as Vibrio parahaemolyticus, Citrobacter koseri, Salmonella Typhii, Pseudomonas aeruginosa, Staphylococcus aureus and even against few fungus species like Candida albicans. The mode of mechanism could be possible binding of silver ions with the biomolecules present in cells. It is believed that the whole system runs over the fact that it leads to the formation of free radical along with the production of ROS i.e. reactive oxygen species, which ultimately result in apoptotic condition and hence cell could no longer replicate. There is much more application ranging from food preservation, cosmetic etc. But the physical and chemical synthesis of Ag has been inefficient to meet the demands at the same time causing lots of damage to the environment. Hence it calls for a cleaner, efficient and eco-friendly process. That space has been traveled by biosynthesis of Ag nanoparticle from plant, algae, and bacteria etc. This review takes under consideration such efforts in the last few years. DOI: http://dx.doi.org/10.5281/zenodo.2617168
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