Development of recyclable polyvinyl alcohol-based transparent films with enhanced UV shielding for sustainable fruit preservation packaging

IF 8.5 1区农林科学 Q1 FOOD SCIENCE & TECHNOLOGY

Food Packaging and Shelf Life Pub Date : 2025-06-28 DOI:10.1016/j.fpsl.2025.101553

Xiaoli Liu , Tianyu Sun , Xiaoqing Wang , Rui Huang , Xuanxuan Huang , Xin Li , Zhanhui Lu

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引用次数: 0

Abstract

Green and UV shielding are desirable properties for future food packaging materials. Although polyvinyl alcohol (PVA) has been widely studied and applied in the packaging field, the lack of UV shielding properties limits its further development and utilization. In this study, we report a fruit packaging composite films with recyclable, highly transparent, and high UV shielding properties, which is based on PVA and made to exhibit excellent UV shielding ability by blending with folic acid (FA) via the one-pot method. When 4 mL of FA solution was added, the film achieved 99.99 % and 100 % shielding efficiencies for UVA and UVB, respectively, while maintaining more than 84 % light transmission in the visible region (600 nm). In addition, the tensile strength of the film was increased by 1.66 times compared with the pure PVA film, and the elongation at break could reach 107.54 %. Most importantly, the composite films are also recyclable, with excellent UV shielding properties remaining after the films are dissolved and remolded. This work is expected to have great potential in the low-cost packaging industry and sustainable packaging, laying the foundation for green packaging materials.

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可回收聚乙烯醇基增强紫外线屏蔽透明薄膜的研制

绿色和防紫外线是未来食品包装材料的理想性能。聚乙烯醇（PVA）在包装领域得到了广泛的研究和应用，但其紫外线屏蔽性能的不足限制了其进一步的开发和利用。在本研究中，我们报道了一种可回收、高透明、高紫外线屏蔽性能的水果包装复合薄膜，该薄膜以聚乙烯醇（PVA）为基材，通过一锅法与叶酸（FA）共混而成，具有优异的紫外线屏蔽能力。当添加4 mL FA溶液时，膜对UVA和UVB的屏蔽效率分别达到99.99 %和100% %，同时在可见光区（600 nm）保持84 %以上的透光率。与纯PVA膜相比，拉伸强度提高了1.66倍，断裂伸长率可达107.54 %。最重要的是，复合薄膜也是可回收的，在薄膜溶解和重塑后仍具有优异的紫外线屏蔽性能。这项工作有望在低成本包装行业和可持续包装方面具有很大的潜力，为绿色包装材料奠定基础。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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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.