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  • Title: Rapidly Responsive and Highly Selective Fluorescent Probe for Bisulfite Detection in Food.
    Author: Wang J, Hao Y, Wang H, Yang S, Tian H, Sun B, Liu Y.
    Journal: J Agric Food Chem; 2017 Apr 05; 65(13):2883-2887. PubMed ID: 28300403.
    Abstract:
    The new fluorescent probe 4-hydroxy-3-((2E,4E)-5-phenylpenta-2,4-dienoyl)-2H-chromen-2-one (probe 1) was designed and synthesized for selective detection of sulfite. The fluorescence intensity of the probe was decreased only in the presence of HSO3-; all other anions assessed resulted in an increased fluorescence response. Hence, probe 1 acts as a highly selective sensor for HSO3-. This sulfite sensitivity can also be readily monitored visually, as once treated with sulfite the solution shows a marked color change from yellow to colorless. Moreover, probe 1 can be conveniently used as a signal tool to determine the HSO3- levels in various sugar samples.
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