甲纤维素薄膜与基于氨酸的共价有机聚合物共价交联,用于光动力学灭菌
Quanbin Fu1, Houshen Li2, Mouzhen An3
1College of Food Science and Engineering, Shandong Agricultural University, Taian 271000, PR China; College of Chemistry and Material Science, Shandong Agricultural University, Taian 271000, PR China.
International journal of biological macromolecules
|June 5, 2024
概括
新型基于纤维素的薄膜与基于氨酸的共价有机聚合物 (Por-COPs) 在可见光下显示出出色的抗菌特性. 这些可持续的包装薄膜有效地使食源性病原体如金黄色葡萄球菌和大肠杆菌失活.
科学领域:
- 材料科学 材料科学 材料科学
- 生物技术是生物技术.
- 食品科学 食品科学 食品科学
背景情况:
- 食物传播的病原体对人类健康构成重大风险,需要先进的解决方案.
- 传统的食品包装往往缺乏有效的抗微生物特性,导致腐烂和污染.
- 开发可持续和高性能包装材料对食品工业至关重要.
研究的目的:
- 在可见光下创建基于纤维素的新型包装膜,具有强大的抗菌活性.
- 研究将基于氨酸的共价有机聚合物 (Por-COPs) 纳入纤维素薄膜的影响.
- 评估这些复合薄膜在灭活常见的食源性病原体方面的有效性.
主要方法:
- 构建基于氨酸的共价有机聚合物 (Por-COPs).
- 在二甲基纤维素 (DAC) 上对Por-COPs进行共价接种,以形成复合膜.
- 对DAC/Por-COP膜的机械性能,疏水性和防水性的评估.
- 在可见光照射下对黄金葡萄球菌和大肠杆菌的抗菌功效的评估.
主要成果:
- 添加Por-COPs显著提高了DAC基膜的机械强度,疏水性和防水性.
- DAC/Por-COP-2.5薄膜显示出显著的细菌光动力失活,在20分钟内实现了99.90%的金黄色细菌和99.45%的大肠杆菌失活.
- 复合膜在可见光下有效地产生反应性氧物种 (ROS),包括超氧化基 (•O2-) 和单片氧 (1O2),导致细菌细胞膜损伤.
- 开发出来的薄膜起到有效的屏障作用,防止细菌污染.
结论:
- 新型基于纤维素的复合膜包含Por-COP,具有出色的可见光激活抗菌特性.
- 这些发现支持为食品行业开发先进,可持续的包装解决方案.
- 这些片提供了一种有希望的策略,可以减少食物传播病原体的污染,并延长保质期.
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