用天然皮提取物涂上生物聚合物层的合成聚合物的表征,用于食品包装
Domagoj Gabrić1, Mia Kurek1, Mario Ščetar1
1Faculty of Food Technology and Biotechnology, University of Zagreb, Pierottijeva 6, HR-10000 Zagreb, Croatia.
Polymers
|June 10, 2023
概括
这项研究开发了合成食品包装上的皮精油 (OPEO) 生物层涂层. 富含OPEO的涂料改善了气体屏障特性,但显示了增加的水蒸气传递.
科学领域:
- 材料科学 材料科学 材料科学
- 食品科学 食品科学 食品科学
- 聚合物科学 聚合物科学
背景情况:
- 像PET-O/PP这样的合成包装材料给环境带来了挑战.
- 对于可持续和功能性的食品包装解决方案的需求日益增长.
- 生物基涂料为提高包装性能提供了一个有希望的替代品.
研究的目的:
- 在PET-O/PP合成层上开发和描述用皮精油 (OPEO) 丰富的生物层涂层.
- 评估食品包装应用开发的涂料的屏障,光学,表面和抗菌性能.
- 评估物质从涂层包装迁移到食品仿制剂中的情况.
主要方法:
- 开发含有OPEO的基托 (Chi) 基生物层涂层.
- 屏障特性 (O2,CO2,水蒸气),光学特性 (颜色,不透明性),表面特性 (FTIR) 和对大肠杆菌的抗菌活性的表征.
- 测量整体迁移到3%的酸和20%的乙醇食品仿真剂.
- 在不同温度 (20°C,40°C,60°C) 下对材料性能进行评估.
主要成果:
- 与未涂层的PET-O/PP相比,桑涂层提高了气体屏障性能.
- 添加1%的OPEO显著降低了67%的CO2透率和48%的O2透率.
- 涂层样本的水蒸气传递率增加,并观察到轻微的颜色变化 (ΔE > 2).
- 整体迁移水平在食品包装的可接受范围内.
结论:
- 富含OPEO的生物层涂层显示出增强合成食品包装的气体屏障性能的潜力.
- 需要进一步的研究来优化OPEO度以获得有效的抗菌活性.
- 开发的涂层代表了功能性食品包装的可持续方法.
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