黄曲霉真菌合成银纳米粒子 : 特性及抗真菌活性

IF 1 4区材料科学 Q4 MATERIALS SCIENCE, MULTIDISCIPLINARY

Digest Journal of Nanomaterials and Biostructures Pub Date : 2023-04-20 DOI:10.15251/djnb.2023.181.411

G. Matei, S. Matei, G. Cogălniceanu

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引用次数: 0

摘要

本研究旨在利用黄曲霉真菌合成银纳米粒子，并评价其抗真菌活性。AgNPs的存在通过从黄色到棕色的颜色变化以及由于表面等离子体共振在420nm处的最大吸光度来证明。透射电子显微镜图像显示AgNPs近似球形，尺寸在3.3和40nm之间，晶体结构和良好的分散性。AgNPs对赭曲霉和扩展青霉具有抗真菌活性，但对尖孢镰刀菌具有完全抑制作用。最小抑菌浓度（MIC）从7.5（扩展青霉和尖孢镰刀菌）到12.5μg/mL（赭曲霉）不等。

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Mycosynthesis of silver nanoparticles by Aspergillus flavus : characterization and antifungal activity

The present study aimed to mycosynthesize silver nanoparticles (AgNPs) by Aspergillus flavus and to assess their antifungal activity. The presence of AgNPs was certified by colour change from yellow to brown and by the maximum absorbance at 420 nm, because of Surface Plasmon resonance. Transmission Electron Microscopy images revealed the aproximately spherical shape of AgNPs, dimensions ranging between 3.3 and 40 nm, crystalline structure and a good dispersion. AgNPs presented antifungal activity against Aspergillus ochraceus and Penicillium expansum but totally inhibited Fusarium oxysporum. Minimum inhibitory concentration (MIC) varied from 7.5 (Penicillium expansum and Fusarium oxysporum) to 12.5 μg/mL (Aspergillus ochraceus).

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