Enhanced ammonia-sensitive intelligent films based on a metal-organic framework for accurate shrimp freshness monitoring

文献类型： 外文期刊

第一作者： Tan, Zhijian

作者： Tan, Zhijian

作者机构：

关键词： Curcumin; Metal-organic framework; Intelligent films; Freshness monitoring; Real-time monitoring

期刊名称：FOOD CHEMISTRY （ 影响因子：9.8； 五年影响因子：9.7 ）

ISSN： 0308-8146

年卷期： 2025 年 471 卷

页码：

收录情况： SCI

摘要： Sensitive intelligent films can be used to accurately monitor food freshness. In this study, a cellulose acetate curcumin-loaded cyclodextrin (CD)-based metal-organic framework intelligent film (CA-Cur@CD-MOF) was developed to monitor shrimp freshness at different spoilage stages in real time. The mechanical, barrier, optical, and ammonia-sensitive properties of this film were studied. Notably, this film demonstrated effective ammoniasensitive color development, reaching a Delta E value of 8.5 in 2 min under an ammonia atmosphere of approximately 0.4 mM. This intelligent film exhibits good DPPH free radical scavenging ability, high thermal stability, and excellent theoretical limit of detection (LOD). Interestingly, shrimp can be classified as "fresh", "sub-fresh", and "spoilage" during the monitoring of shrimp freshness. Furthermore, a significant correlation (R2 = 0.9641) was observed between the TVB-N and Delta E value for this film. Therefore, this intelligent film is promising for the real-time monitoring of freshness of shrimp and other protein-rich foods.

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