用抗菌素酸微粒料装载的基于聚乳酸和ECOVIO的生物复合材料的评估
I Mena-Prado1, J J Reinosa2, M Fernández-García1
1Instituto de Ciencia y Tecnología de Polímeros (ICTP-CSIC), C/Juan de la Cierva 3, 28006 Madrid, Spain.
International journal of biological macromolecules
|October 18, 2023
概括
使用聚乳酸 (PLA) 和聚乙基合 (PBAT) 与六甲 (E452i) 的新生物基复合薄膜显示了食品包装的增强热稳定性和抗菌特性.
科学领域:
- 材料科学 材料科学 材料科学
- 聚合物科学 聚合物科学
- 食品科学 食品科学 食品科学
背景情况:
- 开发可持续和功能性的食品包装对于减少环境影响和提高食品安全至关重要.
- 像PLA和PBAT这样的生物基聚合物为传统塑料提供了有希望的替代品,但通常需要修改以满足性能需求.
研究的目的:
- 为食品包装应用开发具有抗微生物和增强热性能的新型生物基复合薄膜.
- 为了研究六甲 (E452i) 微粒对PLA和PLA/PBAT混合物 (Ecovio®) 基膜的特性的影响.
主要方法:
- 用PLA或Ecovio®矩阵,六甲 (E452i) 作为抗微生物填充剂 (1%和5%重量%) 和乙支柱酸 (ATBC) 作为增塑剂 (15%重量%) 制备复合膜.
- 使用热重力测量分析 (TGA) 和差分扫描热量计 (DSC) 分析了热性质.
- 通过Young的模量测量来评估机械性能,并对Listeria innocua和Staphylococcus aureus进行了抗菌活性测试. 在工业堆肥条件下评估了可分解性.
主要成果:
- 加入E452i微粒可以提高PLA和Ecovio®基膜的热稳定性和结晶性.
- 机械测试显示扬斯模量增加,表明增强的刚性.
- 抗微生物测试显示,对Listeria innocua和Staphylococcus aureus的细菌显著减少 (> 50%),其5重%的E452i.
- 开发的薄膜在工业堆肥条件下保持了其生物降解性.
结论:
- 开发的含有六甲酸的生物基复合薄膜显示出有前途的抗菌活性和改善的热和机械性能.
- 这些材料适用于抗菌和可堆肥食品包装应用.
- 该研究强调了E452i作为生物基聚合物有效抗菌填充剂的潜力.
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