Melendreras Candela, Ortiz-Gómez Inmaculada, Álvarez-García Pablo, Lastra Elena, García Alonso Francisco Javier, Costa-Fernandez José M, Soldado Ana
Department of Physical and Analytical Chemistry, University of Oviedo, 33006, Oviedo, Spain.
Department of Physical and Analytical Chemistry, University of Oviedo, 33006, Oviedo, Spain.
Talanta. 2025 Jan 1;282:127026. doi: 10.1016/j.talanta.2024.127026. Epub 2024 Oct 9.
The improvement of food safety and the reduction of food loss and waste require the development of new bioanalytical tools that provide chemical information about the composition of food that is of great value for improving traceability and extending the shelf life of food. Herein, a Cu-based metal-organic framework has been synthesized and immobilized onto cellulose paper disks for colorimetric and fluorescent detection and quantification of biogenic amines in food. The color of the nano metal-organic framework changes from green to brown in the presence of low amounts of biogenic amine vapors. Also, the fluorescence emission of the nano metal-organic framework greatly decreases after exposing the cellulose disks to amine vapors. The developed sensing paper disk exhibits a quick response to the presence of volatile biogenic amines, very low detection limits, and great selectivity. Also, the paper sensor was used for real-time monitoring of biogenic amines in bass samples at different temperature conditions, being a highly valuable method for evaluating food freshness and safeguarding food safety.
食品安全的改善以及食品损失和浪费的减少需要开发新的生物分析工具，这些工具能够提供有关食品成分的化学信息，这对于提高可追溯性和延长食品保质期具有重要价值。在此，一种铜基金属有机框架已被合成并固定在纤维素纸盘上，用于比色和荧光检测及定量食品中的生物胺。在存在少量生物胺蒸气的情况下，纳米金属有机框架的颜色从绿色变为棕色。此外，将纤维素盘暴露于胺蒸气后，纳米金属有机框架的荧光发射大大降低。所开发的传感纸盘对挥发性生物胺的存在表现出快速响应、极低的检测限和高选择性。此外，该纸质传感器用于在不同温度条件下对鲈鱼样品中的生物胺进行实时监测，是评估食品新鲜度和保障食品安全的一种极有价值的方法。
