Polyvinyl alcohol/corn starch-based indicator films integrated with roselle anthocyanins into five metal-organic frameworks for monitoring chilled pork and shrimp freshness

IF 6.8 1区农林科学 Q1 FOOD SCIENCE & TECHNOLOGY

Innovative Food Science & Emerging Technologies Pub Date : 2025-09-11 DOI:10.1016/j.ifset.2025.104230

Xiaowei Huang , Ke Zhang , Junjun Zhang , Xiaodong Zhai , Jiyong Shi , Xiaobo Zou , Zhihua Li

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引用次数: 0

Abstract

This study focused on the fabrication and comparative evaluation of five high sensitivity and stability indicator films, incorporated with different MOFs: MIL-101-Fe, MIL-101-NH₂-Al, UiO-66-Zr, UiO-66-NH₂-Zr, and Cu-MOF-NH₂. The morphological characteristics of the dyes and the corresponding indicator films were systematically characterized. Migration performance tests revealed a significant reduction in anthocyanin migration in the films PCR-M1N, PCR-U6N, and PCR-CuN when exposed to fatty food simulants (maximum absorbance value has decreased from 0.27 to a range of 0.06–0.11). In addition, very low migration levels of anthocyanins were recorded in neutral food simulants for the films PCR-M1 and PCR-U6. pH response and volatile amine analysis demonstrated that MOFs modified with -NH₂ groups exhibit enhanced colorimetric sensitivity. The PCR-CuN film exhibited a more pronounced color change (ΔE 14.9 → 25.19) compared to the PCR film (ΔE 47.37 → 39.46) within the pH range of 5–7. Notably, the PCR-U6N film exhibited excellent NH₃ responsiveness (transitioning from red to purple) during monitoring of fresh pork. In parallel, the PCR-CuN film displayed high sensitivity to hydrogen sulfide (H₂S), a byproduct of shrimp spoilage, via Cu²⁺ redox reactions (transitioning from red to green). This work provided a more precise and customizable approach for intelligent food packaging, highlighting the critical role of MOFs functionalization in targeting species-specific spoilage biomarkers.

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以聚乙烯醇/玉米淀粉为基础的指示膜与玫瑰花青素结合成五种金属有机框架，用于监测冷冻猪肉和虾的新鲜度

本研究主要研究了MIL-101-Fe、MIL-101-NH2-Al、UiO-66-Zr、UiO-66-NH2-Zr和Cu-MOF-NH2五种不同MOFs的高灵敏度和高稳定性指示膜的制备和比较评价。系统地表征了染料的形态特征和相应的指示膜。迁移性能测试显示，暴露于高脂肪食物模拟物时，膜PCR-M1N、PCR-U6N和PCR-CuN中的花青素迁移显著减少（最大吸光度值从0.27降至0.06-0.11）。此外，在中性食品模拟剂中记录到非常低的花青素迁移水平，用于膜PCR-M1和PCR-U6。pH响应和挥发性胺分析表明-NH2基团修饰的mof具有增强的比色灵敏度。在5-7的pH范围内，PCR- cun膜的颜色变化（ΔE 14.9→25.19）比PCR膜（ΔE 47.37→39.46）更明显。值得注意的是，在监测新鲜猪肉时，PCR-U6N膜表现出优异的NH3响应性（从红色过渡到紫色）。同时，PCR-CuN薄膜通过Cu2+氧化还原反应（从红色变为绿色）对硫化氢（H2S）表现出高灵敏度。硫化氢是虾变质的副产物。这项工作为智能食品包装提供了一种更精确和可定制的方法，突出了mof功能化在针对物种特异性腐败生物标志物方面的关键作用。

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来源期刊

Innovative Food Science & Emerging Technologies 工程技术-食品科技

CiteScore

12.00

自引率

6.10%

发文量

259

审稿时长

25 days

期刊介绍： Innovative Food Science and Emerging Technologies (IFSET) aims to provide the highest quality original contributions and few, mainly upon invitation, reviews on and highly innovative developments in food science and emerging food process technologies. The significance of the results either for the science community or for industrial R&D groups must be specified. Papers submitted must be of highest scientific quality and only those advancing current scientific knowledge and understanding or with technical relevance will be considered.