MCOF-assisted and MnO2 nanozyme-triggered cascade dual-mode aptasensor for intelligent detection of Salmonella Typhimurium.
Conventional methods for detecting Salmonella Typhimurium in food often require lengthy procedures or specialized instrumentation. We developed a dual-mode aptasensor based on magnetic covalent organic frameworks (MCOFs) and MnO2 nanozymes. MCOF-AuNPs@apt captures bacteria, followed by MnO2@apt binding to form sandwich...