CAJ | 학술논문

利用抗坏血酸对AgNO3进行还原，生成银纳米粒核心，并通过正硅酸四乙酯的水解与聚合反应获得SiO2介孔外壳，制备平均粒径约为.9 nm的Ag SiO2核壳型纳米粒。 Ag SiO2纳米粒可以显著地抑制香石竹镰刀菌的生长，最小抑菌质量浓度为μg/mL，并可抑制香石竹镰刀菌菌丝生长和孢子分生。 Ag SiO2纳米粒处理～4 h后，菌丝体的过氧化氢酶、总超氧化物歧化酶、过氧化物酶活力增强，提示Ag SiO2纳米粒抗菌机制和活性氧诱导相关。
이용항배혈산대AgNO3진행환원，생성은납미립핵심，병통과정규산사을지적수해여취합반응획득SiO2개공외각，제비평균립경약위.9 nm적Ag SiO2핵각형납미립。 Ag SiO2납미립가이현저지억제향석죽렴도균적생장，최소억균질량농도위μg/mL，병가억제향석죽렴도균균사생장화포자분생。 Ag SiO2납미립처리～4 h후，균사체적과양화경매、총초양화물기화매、과양화물매활력증강，제시Ag SiO2납미립항균궤제화활성양유도상관。
The Ag-SiO2 core-shell nanoparticles were prepared.The mean size of the nanoparticles was 92.9 nm, and the nanoparticles demonstrated the activity of growth inhibition on Fusarium oxysporum f.sp.dianthi.The minimum inhibition concentration of the nanoparticles was 4 μg/mL.The nanoparticles could restrain the mycelia growth and conidial regeneration of the fungus.Moreover, the antioxidant enzyme activities of super oxygen dehydrogenases,catalase and peroxidase in mycelium were induced by the nanoparticle treatment for 2~4 h.The results suggested that the induced reactive oxygen species were also involved in the antimicrobial mechanism of the prepared nanoparticles.