Innovative dual-ligand approach for designing Zn-MOFs nanostructures for carrageenan-based active and intelligent packaging of fresh-cut fruits

IF 8.5 1区农林科学 Q1 CHEMISTRY, APPLIED

Food Chemistry Pub Date : 2025-07-01 DOI:10.1016/j.foodchem.2025.145360

Zohreh Riahi , Ajahar Khan , Su Jung Hong , Jong-Whan Rhim , Gye Hwa Shin , Jun Tae Kim

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Abstract

A multifunctional packaging material was developed using Zn-based metal-organic frameworks (Zn-MOFs) with dual-ligands of catechol and alizarin ligands (CA/Zn-MOFs). These Zn-MOFs were incorporated into a carrageenan (Car) polymer matrix to create a smart packaging film (Car/CA/Zn-MOFs). The resulting film exhibited a 13 % enhancement in tensile strength and demonstrated effective UV protection with 94.3 % for UV-B and 88.4 % for UV-A. The Car/CA/Zn-MOFs film exhibited substantial antimicrobial activity against E. coli (73.3 %), S. enterica (96.0 %), L. monocytogenes (100 %), and S. aureus (79.4 %), alongside a 95 % scavenging of ABTS radicals. Additionally, the film showed a visual color shift in response to acetic acid vapor and pH changes, enabling its employment as a freshness indicator for orange juice. Furthermore, the film significantly extended the shelf life of fresh-cut oranges kept at 4 °C. These results highlight the effectiveness of Zn-MOFs-based smart packaging for food safety and quality monitoring.

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创新双配体方法设计锌- mof纳米结构用于卡拉胶活性和智能鲜切水果包装

以邻苯二酚和茴香素双配体（CA/Zn-MOFs）为材料，制备了一种多功能包装材料。这些Zn-MOFs被掺入卡拉胶（Car）聚合物基质中，形成智能包装薄膜（Car/CA/Zn-MOFs）。所得薄膜的抗拉强度提高了13 %，对UV- b和UV- a的防护效果分别为94.3 %和88.4% %。Car/CA/ zn - mof薄膜对大肠杆菌（73.3 %）、肠链球菌（96.1 %）、单核增生乳杆菌（100 %）和金黄色葡萄球菌（74.9 %）具有显著的抗菌活性，同时对ABTS自由基的清除率为95 %。此外，该薄膜在醋酸蒸汽和pH值变化的影响下表现出视觉色移，使其成为橙汁的新鲜度指标。此外，该薄膜显著延长了鲜切橙子在4 °C下的保质期。这些结果突出了基于锌mofs的智能包装在食品安全和质量监测中的有效性。

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来源期刊

Food Chemistry 工程技术-食品科技

CiteScore

16.30

自引率

10.20%

发文量

3130

审稿时长

122 days

期刊介绍： Food Chemistry publishes original research papers dealing with the advancement of the chemistry and biochemistry of foods or the analytical methods/ approach used. All papers should focus on the novelty of the research carried out.