A ratiometric fluorescence amine sensor based on carbon quantum dot-loaded electrospun polyvinylidene fluoride film for visual monitoring of food freshness

Wenjun Song; Xiaodong Zhai; Jiyong Shi; Xiaobo Zou; Yuhong Xue; Yue Sun; Wei Sun; Junjun Zhang; Xiaowei Huang; Zhihua Li; Tingting Shen; Yanxiao Li; Chenguang Zhou; Melvin Holmes; Yunyun Gong; Megan Povey

doi:10.1016/j.foodchem.2023.137423

A ratiometric fluorescence amine sensor based on carbon quantum dot-loaded electrospun polyvinylidene fluoride film for visual monitoring of food freshness

Food Chem. 2024 Feb 15:434:137423. doi: 10.1016/j.foodchem.2023.137423. Epub 2023 Sep 7.

Authors

Wenjun Song¹, Xiaodong Zhai², Jiyong Shi³, Xiaobo Zou⁴, Yuhong Xue¹, Yue Sun¹, Wei Sun¹, Junjun Zhang¹, Xiaowei Huang¹, Zhihua Li¹, Tingting Shen¹, Yanxiao Li¹, Chenguang Zhou¹, Melvin Holmes⁵, Yunyun Gong⁵, Megan Povey⁵

Affiliations

¹ School of Food and Biological Engineering, Jiangsu University, Zhenjiang 212013, China; International Joint Research Laboratory of Intelligent Agriculture and Agro-products Processing, Jiangsu Education Department, Zhenjiang 212013, China.
² School of Food and Biological Engineering, Jiangsu University, Zhenjiang 212013, China; Institute of Modern Agriculture and Health Care Industry, Wencheng 325300, China; International Joint Research Laboratory of Intelligent Agriculture and Agro-products Processing, Jiangsu Education Department, Zhenjiang 212013, China. Electronic address: zhai_xiaodong@ujs.edu.cn.
³ School of Food and Biological Engineering, Jiangsu University, Zhenjiang 212013, China; International Joint Research Laboratory of Intelligent Agriculture and Agro-products Processing, Jiangsu Education Department, Zhenjiang 212013, China. Electronic address: Shi_jiyong@ujs.edu.cn.
⁴ School of Food and Biological Engineering, Jiangsu University, Zhenjiang 212013, China; International Joint Research Laboratory of Intelligent Agriculture and Agro-products Processing, Jiangsu Education Department, Zhenjiang 212013, China. Electronic address: zou_xiaobo@ujs.edu.cn.
⁵ International Joint Research Laboratory of Intelligent Agriculture and Agro-products Processing, Jiangsu Education Department, Zhenjiang 212013, China; School of Food Science and Nutrition, University of Leeds, Leeds LS2 9JT, United Kingdom.

PMID: 37713758
DOI: 10.1016/j.foodchem.2023.137423

Abstract

A ratiometric fluorescence sensor based on dual-emission carbon quantum dots (CQD) was developed to real time monitor food spoilage. Two hydrophobic electrospun fluorescent films were developed using polyvinylidene fluoride (PVDF) as the film-forming polymer in combination with CQD as the fluorescent probe. The CQD/PVDF film and CQD@PVDF film enabled the analysis of TMA with limits of detection (LODs) of 1.04 μM and 2.1 μM, respectively, and they exhibited excellent stability at 4 °C. By these virtues, the CQD@PVDF film exhibited visible fluorescence color changes from yellow green to blue by real time and nondestructively sensing volatile amines generated from beef, pork and shrimp in a packaging system with high humidity. This strategy provided a simple but useful, non-destructive, robust, and platform to real time monitor food spoilage for intelligent food packaging.

Keywords: Electrospun film; Food freshness; Intelligent packaging; Ratiometric fluorescent sensor.