Reversible AIE-active fluorescent probe with a large emission peak shift for ratiometric detection of food freshness indicator H2S

Beibei Wang; Juncai Leng; Xiaoqian Wang; Wei Zhao

doi:10.1016/j.foodchem.2022.132768

Reversible AIE-active fluorescent probe with a large emission peak shift for ratiometric detection of food freshness indicator H₂S

Food Chem. 2022 Aug 30:386:132768. doi: 10.1016/j.foodchem.2022.132768. Epub 2022 Mar 21.

Authors

Beibei Wang¹, Juncai Leng¹, Xiaoqian Wang¹, Wei Zhao²

Affiliations

¹ State Key Laboratory of Food Science and Technology, School of Food Science and Technology, Jiangnan University, Wuxi 214122, China; Jiangsu Key Laboratory of Advanced Food Manufacturing Equipment & Technology, Jiangnan University, Wuxi, Jiangsu, China.
² State Key Laboratory of Food Science and Technology, School of Food Science and Technology, Jiangnan University, Wuxi 214122, China; Jiangsu Key Laboratory of Advanced Food Manufacturing Equipment & Technology, Jiangnan University, Wuxi, Jiangsu, China. Electronic address: zhaow@jiangnan.edu.cn.

PMID: 35349897
DOI: 10.1016/j.foodchem.2022.132768

Abstract

It is crucial to on-site monitor H₂S for addressing the concerns associated with food safety. We rationally prepared an AIE-active fluorescent probe (CLBZ) with the aggregated state conversion for sensing H₂S in a ratiometric response manner. CLBZ displayed ratiometric response, fast response time (5 s), well-resolved emission peak shift (147 nm) and high selectivity towards H₂S, and it can be used as a reversible and reusable probe. The probe-based test strip was also developed to conveniently detect H₂S generated during food spoilage in the absence of laboratory instruments. It achieved the consistent results and sensitivity with that determined by the colony forming unit (CFU) assay. These results paved a successful way to develop an effective analytical method for food quality and safety.

Keywords: AIE; Food freshness; H(2)S; Ratiometric; Reversive.

MeSH terms

Fluorescent Dyes*
Hydrogen Sulfide*

Substances

Fluorescent Dyes
Hydrogen Sulfide