Frontiers | Active films based on bio-polyethylene and natural extracts rich in tocopherols for food packaging applications

IF 2.6 4区材料科学 Q3 MATERIALS SCIENCE, MULTIDISCIPLINARY

Frontiers in Materials Pub Date : 2024-06-17 DOI:10.3389/fmats.2024.1365222

A. C. Mellinas, E. García-Serna, A. Jiménez, M. C. Garrigós

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引用次数: 0

Abstract

Antioxidant/antifungal active films based on bio-polyethylene (BPE) added with Nutrabiol®T90 and Tocobiol®Plus natural extracts rich in tocopherols at different concentrations (1 and 3 wt%) were developed by melt-blending followed by compression-molding. Thermal, barrier, mechanical, optical and functional properties of the developed active films were evaluated. The addition of active extracts did not cause important changes in thermal and barrier properties of active films whereas a significant increase in oxidative stability was found. Release kinetics of active additives migration showed higher tocopherol diffusion coefficient and antioxidant capacity, determined by the DPPH and ABTS methods, for films containing 3 wt% of Nutrabiol®T90. This film also delayed polymer oxidation in 260 min and extended strawberries shelf-life during storage for 7 days compared to neat BPE, showing a significant antifungal effect. The studied biomaterials offer great potential to substitute conventional petrol-derived materials at the industrial scale as active food packaging systems to increase the shelf-life of perishable foodstuff.

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前沿 | 基于生物聚乙烯和富含生育酚的天然提取物的活性薄膜在食品包装中的应用

在生物聚乙烯（BPE）的基础上，添加了不同浓度（1 和 3 wt%）的富含生育酚的 Nutrabiol®T90 和 Tocobiol®Plus 天然提取物，通过熔融混合然后压缩成型，开发出了抗氧化/抗真菌活性薄膜。对开发的活性薄膜的热性能、阻隔性、机械性能、光学性能和功能特性进行了评估。活性提取物的添加并没有对活性薄膜的热性能和阻隔性能造成重大影响，但氧化稳定性却有显著提高。通过 DPPH 和 ABTS 方法测定的活性添加剂迁移释放动力学表明，含有 3 wt% Nutrabiol®T90 的薄膜具有更高的生育酚扩散系数和抗氧化能力。与纯 BPE 相比，这种薄膜还能在 260 分钟内延缓聚合物氧化，延长草莓 7 天的保质期，显示出显著的抗真菌效果。所研究的生物材料具有巨大的潜力，可以在工业规模上替代传统的汽油衍生材料，作为活性食品包装系统，延长易腐食品的货架期。

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来源期刊

Frontiers in Materials Materials Science-Materials Science (miscellaneous)

CiteScore

4.80

自引率

6.20%

发文量

749

审稿时长

12 weeks

期刊介绍： Frontiers in Materials is a high visibility journal publishing rigorously peer-reviewed research across the entire breadth of materials science and engineering. This interdisciplinary open-access journal is at the forefront of disseminating and communicating scientific knowledge and impactful discoveries to researchers across academia and industry, and the public worldwide. Founded upon a research community driven approach, this Journal provides a balanced and comprehensive offering of Specialty Sections, each of which has a dedicated Editorial Board of leading experts in the respective field.