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非迁移性的活性和智能包装的反应挤出.
Halle N Redfearn1, Matthew K Warren1, Julie M Goddard1
1Department of Food Science, 365 Stocking Hall, Cornell University, Ithaca, New York 14853, United States.
ACS applied materials & interfaces
|June 9, 2023
概括
研究人员使用黄素移植聚烯 (PP-g-Cur) 开发了活跃和智能食品包装. 这种新型材料可以防止腐烂,通过颜色变化表明微生物生长,并提供抗氧化特性,减少食物浪费.
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
- 聚合物化学 聚合物化学
背景情况:
- 食物浪费是一个重要的环境和经济问题,由水分,氧气和微生物的腐烂驱动.
- 传统的食品添加剂有局限性,消费者对"清洁标签"产品的需求需要创新的保存技术.
- 积极和智能包装为防止和检测食品腐败提供了一个有希望的解决方案.
研究的目的:
- 通过在聚烯 (PP-g-Cur) 上移植黄素来开发一种非迁移性活跃和智能包装材料.
- 评估PP-g-Cur的功能性质,包括紫外线阻断,抗氧化活性,抗微生物潜力和破坏性指示.
- 展示一种可扩展的,无溶剂的方法来生产先进的食品包装.
主要方法:
- 库尔库被用反应挤出方式移植到聚烯上,形成PP-g-Cur.
- 进行了迁移测定,以评估黄素的固定性.
- 进行了UV-Vis光谱学,激素清除试验,微生物抑制试验 (大肠杆菌,L. monocytogenes) 和氨暴露试验.
主要成果:
- PP-g-Cur表现出极少的黄素迁移 (<0.011毫克/厘米2),远低于欧盟限制.
- PP-g-Cur薄膜有效地阻断了93%的紫外线,同时保持了64%的可见光透明度.
- 片显示出显著的抗氧化活性,并在暴露于氨气时,颜色从黄色变为红色,表明坏.
- 对大肠杆菌和L. monocytogenes的抗菌活性有限,类似于自由黄素.
结论:
- 反应挤出提供了一种可扩展的,无溶剂的方法,用于生产基于聚烯 (PP-g-Cur) 的活性和智能包装.
- PP-g-Cur包装提供紫外线保护,抗氧化性能,并通过视觉颜色变化通过损坏检测能力.
- 这项技术有可能减少食品浪费,提高包装材料的功能.
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