Nanogold sol plasmon discattering assay for trace carbendazim in tea coupled aptamer with Au³⁺-glyoxal-carbon dot nanocatalytic reaction.

ABSTRACT: Carbendazim (CBZ) is a broad-spectrum fungicide, which is toxic to mammals. Therefore, it is very necessary to establish a sensitive detection for food safety. An experiment found that CD_Fe exhibited excellent catalysis for the nano-indicator reaction of HAuCl₄-glyoxal to produce gold nanoparticles (AuNPs) and that the generated AuNPs have a very strong surface-enhanced Raman scattering (SERS) effect at 1613 cm^-1 in the presence of Victoria blue B molecular probes, and resonance Rayleigh scattering (RRS) signals at 370 nm. The aptamer (Apt) suppressed the catalysis of CD_Fe to cause the SERS and RRS signals decreasing. With the addition of CBZ, the specific Apt reaction occurred to restore the catalysis of CD_Fe, and resulting in a linea

SUBMITTER: Bai H 

PROVIDER: S-EPMC10025530 | biostudies-literature | 2023

REPOSITORIES: biostudies-literature