Fast and Visual Detection of Biogenic Amines and Food Freshness Based on ICT-Induced Ratiometric Fluorescent Probes,Advanced Functional Materials

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Fast and Visual Detection of Biogenic Amines and Food Freshness Based on ICT-Induced Ratiometric Fluorescent Probes
Advanced Functional Materials ( IF 18.5 ) Pub Date : 2023-03-18 , DOI: 10.1002/adfm.202212980
Xin Miao ₁ , Chunxiao Wu ₁ , Feng Li ₁ , Ming Zhang ₁

Affiliation

Biogenic amines (BAs) are important indicators for the evaluation of food spoilage and disease diagnosis. Thus, the detection of BAs with high practical potential is of great importance. In this work, a new BAs fluorescent probe design strategy is proposed by the intramolecular charge transfer (ICT) enhancement of the fluorescent probes, which is induced by the hydrogen bond interaction between probes and analyte. The probes T1 and T2 with donor–acceptor structure not only present a 140 nm bathochromic-shifted emission, ultrafast responses (15 s for T1 and 25 s for T2), and high sensitivity (detection limit of 1.3 ppm for T1 and 2.6 ppm for T2) to cadaverine (the typical representative of BAs) but also discriminate a series of BAs and simply reused at least 30 times after air blowing. Further, a quantitative evaluation system is obtained based on T1 and T2 films. Through the Red/Green/Blue analysis with a smartphone, the total volatile basic nitrogen (an international standard to assess food spoilage) value can be output to quantitatively evaluate the freshness of food. The system is fast, visual, accurate, and non-destructive, enabling consumers and all stakeholders in the food supply chain to monitor food freshness.

中文翻译：

基于 ICT 诱导比率荧光探针的生物胺和食品新鲜度的快速和视觉检测

生物胺（BAs）是评价食品腐败变质和疾病诊断的重要指标。因此，检测具有高实用潜力的 BA 非常重要。在这项工作中，荧光探针的分子内电荷转移 (ICT) 增强提出了一种新的 BAs 荧光探针设计策略，这是由探针与分析物之间的氢键相互作用引起的。具有供体-受体结构的探针T1和T2不仅具有 140 nm 的红移发射、超快响应（T1为 15 s， T2为 25 s ）和高灵敏度（T1 的检测限为 1.3 ppm，T1的检测限为2.6 ppm T2) 到尸胺 (BAs 的典型代表) 但也区分了一系列 BAs 并在吹气后简单地重复使用至少 30 次。此外，基于T1和T2胶片获得定量评价体系。通过智能手机进行红/绿/蓝分析，输出总挥发性盐基氮（国际食品腐败标准）值，定量评价食品的新鲜度。该系统快速、直观、准确且无损，使消费者和食品供应链中的所有利益相关者能够监控食品新鲜度。

更新日期：2023-03-18

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