Europium Ion-Based Magnetic-Trapping and Fluorescence-Sensing Method for Detection of Pathogenic Bacteria.

ABSTRACT: Europium ions (Eu³⁺) have been utilized as a fluorescence-sensing probe for a variety of analytes, including tetracycline (TC). When Eu³⁺ is chelated with TC, its fluorescence can be greatly enhanced. Moreover, Eu³⁺ possesses 6 unpaired electrons in its f orbital, which makes it paramagnetic. Being a hard acid, Eu³⁺ can chelate with hard bases, such as oxygen-containing functional groups (e.g., phosphates and carboxylates), present on the cell surface of pathogenic bacteria. Due to these properties, in this study, Eu³⁺ was explored as a magnetic-trapping and sensing probe against pathogenic bacteria present in complex samples. Eu³⁺ was used as a magnetic probe to trap bacteria such as Staphylococcus aureus, Escheri

SUBMITTER: Jannatin M 

PROVIDER: S-EPMC11007678 | biostudies-literature | 2024 Apr

REPOSITORIES: biostudies-literature