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含有色素的粉薄膜:研究质和物理性质
Olga Mileti1, Domenico Mammolenti1, Noemi Baldino1
1Department of Information, Modeling, Electronics and Systems (D.I.M.E.S.), University of Calabria, Via P. Bucci, Cubo 39C, I-87036 Rende, CS, Italy.
International journal of biological macromolecules
|November 9, 2023
概括
这项研究优化了基于 tannin 的土豆粉薄膜,用于生物降解食品包装. 添加素改变了薄膜的特性,其中1.7% (w/w) 显示出对工业应用的希望.
科学领域:
- 食品科学与技术 食品科学与技术
- 材料科学 材料科学 材料科学
- 聚合物科学 聚合物科学
背景情况:
- 传统塑料带来了环境问题,推动了对可生物降解食品包装的研究.
- 功能添加剂可以增强可生物降解薄膜的性能.
- 素是一种天然化合物,被探索为土豆粉膜的活性添加剂.
研究的目的:
- 调查使用宁作为土豆粉基薄膜中的添加剂.
- 为了优化素含量,以达到所需的薄膜特性.
- 评估素对薄膜的物理,机械和微观结构特性的影响.
主要方法:
- 风病学测量以评估粉与粉的相互作用和薄膜形成溶液 (FFS) 微观结构.
- 薄膜属性的表征:厚度,颜色,导热率,弹性模量 (Eel),破裂时的延长 (EAB),表面湿透性和水溶性.
- 微结构分析使用里埃变换红外光谱 (FTIR),极化光显微镜 (POM) 和扫描电子显微镜 (SEM).
主要成果:
- 所有的FFS都表现出较弱的凝行为,添加素降低了凝强度和凝化温度 (60°C至57°C).
- 低素分数产生了塑料,可变形薄膜 (Eel = 1.96 MPa,EAB = 189%).
- 较高的宁度产生了更硬的疏水膜 (Eel = 12 MPa,EAB = 10%).
结论:
- 素有效地改变了土豆粉膜的特性,使其具有可调的机械和表面特性.
- 在潜在的工业应用中,1.7% (w/w) 的中间 tannin 度被认为是最佳的.
- 富含素的土豆粉薄膜为可持续的食品包装解决方案提供了一个有希望的途径.
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