Antifungal effect of green synthesised silver nanoparticles against Setosphaeria turcica

作者：Huang, Weidong; Bao, Yu; Duan, Haiming; Bi, Yaling; Yu, Haibing^*

来源：IET Nanobiotechnology, 2017, 11(7): 803-808.

DOI：10.1049/iet-nbt.2016.0200

• antibacterial activity
• silver
• nanoparticles
• nanobiotechnology
• pH
• antifungal effect
• green synthesised silver nanoparticles
• Setosphaeria turcica
• nanoscience
• nanotechnology
• Ginkgo biloba L
• leaf extract
• reaction temperature
• inhibition zone method
• inhibition zones
• mass 15 g
• temperature 80 degC
• size 14 nm
• Ag

Green synthesis of silver nanoparticles (AgNPs) is an interesting issue of the nanoscience and nanotechnology due to their unique properties. In the present study, Ginkgo biloba L. leaf extract was used to synthesise AgNPs. The effects of quantity of leaves, concentration of Ag nitrate (AgNO3), reaction temperature, and pH were studied to discover the optimal synthesis system. In addition, antifungal effect of AgNPs against Setosphaeria turcica was measured through inhibition zone method. The optimal biosynthesis system contained 15g of leaf, 8mM AgNO3, and 80 degrees C at pH 9.0. Under mentioned conditions, the resulting synthesised NPs were nearly spherical, with an average size of 14nm. In tests, AgNPs synthesised at different pH resulted in different inhibition zones, diameters increased gradually at pH from 3.0 to 11.0, while antifungal effect reached maximum at 9.0. Results of this study offer a new approach for biological control plant pathogenic fungi, and it has potential application for screening novel fungistats with high efficiency and low toxicity.

• 出版日期2017-10
• 单位安徽科技学院