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用PE/EVOH涂层的纤维素基托盘适用于鱼,肉和牛肉的改气包装

Agnete Jordhøy Lindstad¹, Kloce Dongfang Li¹, Nusrat Sharmin¹

¹Department of Food safety and quality, Nofima - Norwegian Institute of Food, Fisheries and Aquaculture Research, Ås, Norway.

Journal of food science

|September 1, 2025

概括

有塑料涂层的可回收纤维素托盘显示出新鲜食品包装的前景, 保持食品质量和气体水平. 然而,与食品接触可能会损害结构完整性,这对广泛使用构成挑战.

科学领域:

食品科学与技术
材料科学
可持续的包装

背景情况:

作为食品包装中常规塑料的可持续替代品,正在探索基于纤维素的材料.
挑战包括防潮和防脂,修改大气包装 (MAP) 的气体屏障特性和结构稳定性.
现有的纤维素塑料涂层面临密封性和储存稳定性等实际问题.

研究的目的:

对新鲜鱼,肉和牛肉的MAP进行评估,以聚乙烯 (PE) /乙烯乙烯醇 (EVOH) /PE涂层的可回收纤维素底盘.
将它们的性能与聚乙烯二甲 (PET) 托盘进行比较.
评估食物接触对托盘特性和食品质量的影响.

主要方法:

纤维素/PE/EVOH托盘用于两个气体混合物 (60% CO2/40% N2和75% O2/25% CO2).
皮革托盘作为对照.
评估头部气体水平,包装外观,压缩强度,储存期间的食品滴水损失,微生物和气味.

主要成果:

纤维素托盘结构和压缩强度受到食物接触的显著影响,特别是与鱼的接触 (强度从115N降至72N).
纤维素托盘保持了与PET托盘相似的头间气体水平.
没有观察到对食品质量的负面影响 (微生物学,气味,滴水损失).

结论:

混合纤维素/PE/EVOH托盘可用于新鲜食品包装,而不会影响食品质量或气体屏障性能.
在储存过程中纤维素托盘的功能性质的变化对其在食品价值链中的应用提出了挑战.
需要可持续的食品包装解决方案,混合材料具有潜力,但需要进一步开发以提高功能.

关键词:

时间表纤维素纤维食品质量功能性包装方式可回收使用

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