几种尖孢镰刀菌菌株生物合成银纳米颗粒的机制方面

Durán Nelson, Marcato Priscyla D, Alves Oswaldo L, Souza Gabriel I H De, Esposito Elisa

Biological Chemistry Laboratory, Instituto de Química, Universidade Estadual de Campinas, CEP 13084862, Caixa Postal 6154, Campinas, S.P., Brazil.

J Nanobiotechnology. 2005 Jul 13;3:8. doi: 10.1186/1477-3155-3-8.

Extracellular production of metal nanoparticles by several strains of the fungus Fusarium oxysporum was carried out. It was found that aqueous silver ions when exposed to several Fusarium oxysporum strains are reduced in solution, thereby leading to the formation of silver hydrosol. The silver nanoparticles were in the range of 20-50 nm in dimensions. The reduction of the metal ions occurs by a nitrate-dependent reductase and a shuttle quinone extracellular process. The potentialities of this nanotechnological design based in fugal biosynthesis of nanoparticles for several technical applications are important, including their high potential as antibacterial material.

几种尖孢镰刀菌菌株进行了金属纳米颗粒的胞外生产。研究发现，当水合银离子暴露于几种尖孢镰刀菌菌株时，会在溶液中被还原，从而导致形成水合银溶胶。银纳米颗粒的尺寸在20 - 50纳米范围内。金属离子的还原通过硝酸盐依赖性还原酶和穿梭醌胞外过程发生。这种基于真菌生物合成纳米颗粒的纳米技术设计在多种技术应用中的潜力很重要，包括其作为抗菌材料的高潜力。