Poly(vinyl alcohol-co-ethylene) (EVOH) films containing two different active ingredients (AIs), gallic acid (GA) and umbelliferone (UMB) at 5 wt % and 15 wt %, were successfully produced by solvent casting and extrusion. The effects of process techniques, AIs presence, typology and content on optical, morphological, thermal and mechanical properties of EVOH based films have been investigated. In addition, moisture content, migration and radical scavenging activity, antimicrobial and antifungal studies were performed, with the aim of evaluating the effect of AIs on structural and functional properties of realized food packaging systems. Results from colorimetric and transparency investigation underlined that the presence of AIs in EVOH copolymer induced important alterations, whereas migration to food simulant data restricted the use of produced films to the contact with fatty foods. On the other hand, the use of AIs clearly induced positive antioxidant response, inhibitions of bacterial and antifungal growth, confirming the possibility of practically using these materials in the food packaging sector.

通过溶剂流延和挤出成功地制备了包含两种不同的活性成分（AI），没食子酸（GA）和伞形酮（UMB）的聚乙烯醇-乙烯-乙烯（EVOH）薄膜，分别为5 wt％和15 wt％。研究了工艺技术，AI的存在，类型和含量对基于EVOH的薄膜的光学，形态，热和机械性能的影响。此外，还进行了水分含量，迁移和自由基清除活性，抗微生物和抗真菌研究，目的是评估AI对已实现的食品包装系统的结构和功能特性的影响。比色法和透明度研究的结果强调，EVOH共聚物中AI的存在会引起重要的变化，而向食品模拟数据的迁移将制作的胶片的使用限制为与高脂食品接触。另一方面，使用AI显然可以诱导积极的抗氧化反应，抑制细菌和抗真菌生长，从而证实了在食品包装领域实际使用这些材料的可能性。