Design and Fabricating biogenic amine-responsive platform based on self-assembly property of phenazine derivative for visual monitoring of meat spoilage

Fluorescent filter paper with pH-responsive carbon dots for the on-site detection of biogenic amines in food

“…As the environment of BA solution is alkaline, Rb could be applied as a reference emission band to generate ratiometric fluorescence. 37,38 Based on the two well-resolved emission bands of Rb and the pH-responsive N,S-CDs, a ratio fluorescent sensor could be constructed. As shown in Fig.…”

Recent Advances in pH-Responsive Freshness Indicators Using Natural Food Colorants to Monitor Food Freshness

“…It is often used as a fabric colorant in industry [82]. Via the transfer of protons, the hydroxyl group of alizarin interacts with the carbonyl group to form hydrogen bonds, with a color change from yellow to purple [83]. In the case of low pH values, the remaining charged molecules appear yellow due to ionization of the phenolic hydroxyl groups on alizarin and the effect of the azo groups in azobenzene dyes.…”

A simple phenazine derivative fluorescence sensor for detecting formaldehyde

“…[36][37][38][39] Using the rigid planar structure of phenazine dyes, self-assembled fluorescent materials have been reported many times. [40][41][42][43] In view of this and based on our previous research work, we have developed a fluorescent probe PHTA with a specific detection site for HCHO using the phenazine fluorophore as a precursor (Scheme 1). The probe has been successfully applied to the detection of HCHO in food.…”