Work

Turn “on-off” fluorometric probe based on Sm3+ ions activated gold nanoclusters for tetracycline determination in food samples

Year: 2025

Type: article

Abstract: A turn “on-off” fluorometric probe with good sensitivity and selectivity based on glutathione (GSH) fabricated gold nanoclusters (AuNCs) was developed for the determination of tetracycline (TC) in food samples in this work. Samarium ions (Sm 3+ ) were used to aggregate the GSH-AuNCs by aggregation induced emission enhancement (AIEE), as a result fluorescence (FL) of GSH-AuNCs was turned on. The Sm 3+ induced AIEE of AuNCs have eco-friendly and “green synthesis” features. Using TC, the FL of GSH-AuNCs-Sm 3+ was turned off due to the strong interaction between Sm 3+ and TC through dynamic quenching. The reasonable quantum yield (Q.Y) of GSH-AuNCs obtained using AIEE of Sm 3+ ions was 5.3 %. The linear range of this probe was 1 – 20 µM with the lowest limit of detection (LOD) of 0.33 µM. This probe showed recoveries of 90.4–105 % in honey and milk samples. The GSH-AuNCs-Sm 3+ is a good choice for sensing hazards in food products.

Source: Journal of Food Composition and Analysis

DOI: 10.1016/j.jfca.2025.108429

Authors: Awais Madni, Yuchan Zhang, Leyi Zhang, Yanan Qiang, Shengda Qi, Honglin Zhai

Institutions: Lanzhou University, Yantai University

Language: English

Topic: Nanocluster Synthesis and Applications

Subfield: Materials Chemistry

Field: Materials Science

Domain: Physical Sciences

SDG: Zero hunger

Open Access status: hybrid

Estimated APC paid: $3,450