A high strength, breathable, water resistant chitosan-gelatin composite film modified by tannic acid-synergistic ZIF-8 for blueberry preservation

IF 10.6 1区农林科学 Q1 FOOD SCIENCE & TECHNOLOGY

Food Packaging and Shelf Life Pub Date : 2025-09-16 DOI:10.1016/j.fpsl.2025.101610

Huixuan Zhang , Xue Yang , Yingying Zhang , E. Zhao , Haimiao Tian , Keshan Wang , Ning Ji , Yuanyuan Liu , Rui Wang

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引用次数: 0

Abstract

The growing consumer demand for fresh fruit accelerates the advancement of fruit preservation packaging technology. Functional packaging materials, incorporating natural active substances and nanomaterials, offered a foundation for effective preservation. While traditional nanomaterials, predominantly solid in nature, failed to provide adequate channels for material exchange necessary to meet the respiratory requirements of fruits. In this study, porous metal-organic framework zeolitic imidazolate framework-8 (ZIF-8) was synthesized and combined with tannic acid to construct respiratory channels, which were subsequently incorporated into chitosan/gelatin/polyvinyl alcohol composite films. The results demonstrated that ZIF-8@tannin strengthened the cross-linked network structure of the polymer, thereby enhancing the biocompatibility, thermal stability, mechanical strength, and barrier properties of the composite film. Simultaneously, the porous structure provided respiratory pathways that effectively regulated the respiration intensity of preserved blueberries. Notably, the CTZ100 film (100 mg ZIF-8, 20 mg tannin) exhibited optimal overall performance, successfully inhibiting microbial spoilage, weight loss, hardness reduction, and moisture migration during storage. This approach offered valuable insights for developing biodegradable active packaging with antioxidant capabilities and enhanced respiratory support, addressing quality and safety challenges in fruit preservation.

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一种高强度，透气，防水壳聚糖-明胶复合膜，由单宁酸-增效ZIF-8改性，用于蓝莓保鲜

消费者对新鲜水果日益增长的需求加速了水果保鲜包装技术的进步。含有天然活性物质和纳米材料的功能性包装材料为有效保存提供了基础。而传统的纳米材料，主要是固体性质的，不能提供足够的通道来满足水果的呼吸需求。本研究合成了多孔金属-有机骨架分子筛咪唑酸骨架-8 (ZIF-8)，并与单宁酸结合构建呼吸通道，将其掺入壳聚糖/明胶/聚乙烯醇复合膜中。结果表明，ZIF-8@tannin增强了聚合物的交联网络结构，从而提高了复合膜的生物相容性、热稳定性、机械强度和阻隔性能。同时，多孔结构提供了有效调节蓝莓保鲜呼吸强度的呼吸通路。值得注意的是，CTZ100薄膜（100 mg zif - 8,20 mg单宁）表现出最佳的整体性能，成功地抑制了微生物变质、失重、硬度降低和储存过程中的水分迁移。该方法为开发具有抗氧化能力和增强呼吸支持的可生物降解活性包装提供了有价值的见解，解决了水果保存中的质量和安全挑战。

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来源期刊

Food Packaging and Shelf Life Agricultural and Biological Sciences-Food Science

CiteScore

14.00

自引率

8.80%

发文量

214

审稿时长

70 days

期刊介绍： Food packaging is crucial for preserving food integrity throughout the distribution chain. It safeguards against contamination by physical, chemical, and biological agents, ensuring the safety and quality of processed foods. The evolution of novel food packaging, including modified atmosphere and active packaging, has extended shelf life, enhancing convenience for consumers. Shelf life, the duration a perishable item remains suitable for sale, use, or consumption, is intricately linked with food packaging, emphasizing its role in maintaining product quality and safety.