Nano-magnetothermal effect enhances the glucose oxidase activity of FVIOs-GOD in antibacterial research

In this study, glucose oxidase (GOD) was fixed on ferrimagnetic vortex-domain iron oxide nanorings (FVIOs) using the covalent bond crosslinking method to create FVIOs-GOD compounds. The activity of surface-conjugated enzymes can be effectively and selectively enhanced by utilizing FVIOs to induce magnetothermal effects under the influence of alternating magnetic fields. GOD can further catalyze the oxidation of glucose to hydrogen peroxide (H2O2), which possesses bactericidal properties. This study presents a comprehensive technique for controlling the activity of enzymes by nano-magnetothermal stimulation, which was utilized in Escherichia coli antibacterial studies. In comparison to the control group, the enzyme activity of the FVIOs-GOD immobilized enzymes rose by 50