Lu Weibo, Ye Huangwei, Zhu Yike, Li Yuhan, Li Huan, Shen Qing, Chen Jian
Collaborative Innovation Center of Seafood Deep Processing, Zhejiang Province Joint Key Laboratory of Aquatic Products Processing, Institute of Seafood, Zhejiang Gongshang University, Hangzhou 310018, China.
Shusheng Key Laboratory of Medical Chemical Pharmaceutical Research, Ningbo Second Hormone Factory, Ningbo, China.
Int J Biol Macromol. 2025 Aug;319(Pt 4):145599. doi: 10.1016/j.ijbiomac.2025.145599. Epub 2025 Jun 26.
The non-destructive, real-time, and visual assessment of fish freshness is crucial for maintaining food quality and safeguarding public health. In this study, a pH-sensitive and colorimetric enhancement film was developed using a carboxymethyl cellulose/anthocyanin/metal-organic framework (CMC-BA-UIO). The concentration of UIO-66 in the film-forming solution significantly influences the mechanical properties and ammonia responsiveness of the indicator film, with the CMC-BA/2.5%UIO-66 variant exhibiting optimal performance. When utilized for real-time fish freshness monitoring at 4 °C, the CMC-BA/2.5%UIO-66 indicator film demonstrated a distinct color transition from purple to yellow, which exhibited a strong correlation with the rot index (TVB-N) of the fish. These findings indicate that the developed indicator film has potential applications in intelligent packaging for monitoring food shelf life, providing a visual alert to producers and consumers regarding food spoilage.
对鱼类新鲜度进行无损、实时和可视化评估对于维持食品质量和保障公众健康至关重要。在本研究中，使用羧甲基纤维素/花青素/金属有机框架（CMC-BA-UIO）制备了一种pH敏感且比色增强的薄膜。成膜溶液中UIO-66的浓度显著影响指示薄膜的机械性能和对氨的响应性，其中CMC-BA/2.5%UIO-66变体表现出最佳性能。当用于4°C下的鱼类新鲜度实时监测时，CMC-BA/2.5%UIO-66指示薄膜呈现出从紫色到黄色的明显颜色转变，这与鱼类的腐败指数（TVB-N）具有很强的相关性。这些结果表明，所开发的指示薄膜在监测食品保质期的智能包装中具有潜在应用，能够为生产者和消费者提供关于食品变质的视觉警报。
