用生物基塑剂提高可堆肥材料的功能性质,用于潜在的食品包装应用
Ignacio Mena-Prado1, Elena Navas-Ortiz1, Marta 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
|September 21, 2024
概括
酸衍生物 (CITREM-LR10) 增强了PLA薄膜的灵活性,并为生物降解包装提供了抗微生物的好处. 然而,对于食品应用,屏障特性需要改进.
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:
- 在可生物降解的包装中,对无毒的生物基塑性剂的需求日益增加.
- 在聚乳酸 (PLA) 和Ecovio®生物聚合物中需要有效的增塑剂.
研究的目的:
- 评估CITREM-LR10,一种酸衍生物,作为PLA和Ecovio®的新型塑化剂.
- 将CITREM-LR10与由乙酸 (SOFT-NSAFE) 制成的生物基塑化剂进行比较.
主要方法:
- 使用10% (w/w) 的生物聚合物薄膜的制备 CITREM-LR10.
- 分析热性质 (玻璃过渡),机械性质 (破裂时的延长) 和微观结构 (拉曼共聚焦显微镜).
- 评估抗微生物活性,抗氧化特性,在食品模拟剂中的扩散和堆肥行为.
主要成果:
- 在PLA薄膜中,CITREM-LR10增加了破裂时的延长,这归因于微域隔离.
- 这两种增塑剂在食品模拟剂中均显示微不足道的扩散,并没有影响分解率.
- 在CITREM-LR10中,它对S. aureus表现出抗菌活性;两者都具有抗氧化特性.
结论:
- CITREM-LR10作为一种生物基塑化剂具有有益的功能性质,可用于生物降解包装.
- 提高灵活性和抗微生物活性是关键优势.
- 水蒸气和氧气屏障特性受到损害,需要进一步的材料修改以获得最佳的食品包装.
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