Green synthesis of silver nanoparticles using a novel endophytic fungus Letendraea sp. WZ07: Characterization and evaluation of antioxidant, antibacterial and catalytic activities (3-in-1 system)

Biosynthesis of silver nanoparticles (AgNPs) from microorganisms has become an emerging trend in the development of biocompatible nanomaterials for environmental and biomedical applications. In the present study, AgNPs synthesis was formulated based on the facile and eco-friendly method using Letendraea sp. WZ07 as reducing and capping agent. The results revealed that WZ07-AgNPs exhibiting 33.8 nm particle size on average and face-centered cubic in crystalline nature were obtained. Furthermore, WZ07-AgNPs exhibited significant antioxidant activity while exhibiting good antibacterial activity for destroying or suppressing the development of Gram-positive and Gram-negative bacteria than purchased-AgNPs. Moreover, WZ07-AgNPs have strong catalytic activity with 97.29%, 98.96%, 95.83% within 3-, 9-, and 16-min degradation of methyl orange (MO), rhodamine B (RhB), and methylene blue (MB), respectively. Accordingly, this study presented a strategy to employ AgNPs synthesized by fungi to conduct an effective study in biomedical and wastewater treatment applications.

Automated summary

In this study, silver nanoparticles (AgNPs) with significant antioxidant and antibacterial activities were synthesized using the fungus Letendraea sp. WZ07. The AgNPs also exhibited strong catalytic degradation ability for methyl orange, rhodamine B, and methylene blue.