Bisulfite (HSO) has the functions of bleaching, antiseptic, antioxidant, inhibiting bacterial growth, and controlling enzymatic reactions in food. However, long-term consumption of foods containing excessive amounts of bisulfite can be harmful to health. In addition, large doses of sulfur dioxide (SO) can cause diarrhea, hypotension, allergic and asthmatic reactions in susceptible individuals. Therefore, it is urgent and essential to explore some rapid, reliable, and convenient tools to detect HSO in food and SO gas. Herein, we exploited a fluorescent probe, NPO, to detect HSO in 100 % aqueous solution. The probe has the advantages of easy synthesis, excellent water solubility, significant colorimetric change, good selectivity, high sensitivity, and fast response (within 1 min). Probe NPO was successfully applied for testing strips to visualize the behavior of HSO and SO gas. Moreover, the probe has been used to monitor the behavior of HSO in real food samples and animal serum samples.
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| http://dx.doi.org/10.1016/j.foodchem.2022.135146 | DOI Listing |
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