Smartphone-assisted fluorescent film based on the Flu grafted on Eu-MOF for real-time monitoring of fresh-cut fruit freshness

文献类型： 外文期刊

第一作者： Zhang, Zhepeng

作者： Zhang, Zhepeng;Gao, Mingjie;Zou, Xiaobo;Guo, Zhiming;Zhang, Liang;Li, Jiangbo;El-Seedi, Hesham R.;Guo, Zhiming;El-Seedi, Hesham R.

作者机构：

关键词： Metal-organic framework; Grafted materials; Multifunctional filler; Fluorescence film; Fresh-cut fruits; Smartphone application

期刊名称：BIOSENSORS & BIOELECTRONICS （ 影响因子：10.5； 五年影响因子：10.1 ）

ISSN： 0956-5663

年卷期： 2025 年 277 卷

页码：

收录情况： SCI

摘要： Indicator migration within intelligent packaging systems can compromise the safety of the food matrix and the accuracy of coloration, particularly in high humidity packaging. Herein, Eu-BDC-NH2-Fluorescein (MOF-Flu) nanofillers were synthesized by the amide coupling, followed by an analysis of their structural, morphological characteristics, and optical response. The MOF-Flu and microcrystalline cellulose (MCC) nanomaterials were embedded into a sodium carboxymethyl cellulose (CMC-Na) substrate to fabricate enhanced packaging films. Several beneficial properties, including superior hydrophobicity and water resistance, improved mechanical properties, and enhanced thermal stability, were observed for CMC-Na/MOF-Flu compared to CMC-Na/MCC. Additionally, the MOF-Flu composite film exhibited improved UV-visible barrier properties, exceptional resistance to pigment migration, and good time-temperature stability. Finally, a significant linear correlation (R2 = 0.9938, LOD: 1.79-2.90 N/cm2, RSD: 2.16%, recovery: 103.93%) was established using a smartphone application to display the relationship between the SRGB-values of MOFs-based films and hardness of fresh-cut Narcissus mangoes at 4 degrees C. The digital sensing platform utilizing smartphones has pioneered a powerful approach for the on-site rapid quantitative assessment of fresh-cut fruit freshness, significantly enhancing the precision and convenience of intelligent packaging. Furthermore, the developed indicator material MOF-Flu can accurately and non-destructively monitor changes of fruit freshness, alleviating concerns regarding dye contamination during migration.

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