具有可降解性和抗菌活性的PEG交叉链接的O-碳素甲基基托桑薄膜用于食品包装
Bing Yang1, Baoliang Liu2, Yuanyuan Gao3
1Key Laboratory of Public Security Management Technology in Universities of Shandong, School of Intelligence Engineering, Shandong Management University, Jinan, Shandong, China.
Scientific reports
|May 11, 2024
概括
新的食品包装膜由PEG交叉链接的O-carboxymethyl chitosan (O-CMC-PEG) 制成,其性能得到改善. O-CMC-PEG薄膜提供增强的强度,耐水性和抗菌活性,延长食品的保质期.
科学领域:
- 材料科学 材料科学 材料科学
- 聚合物化学 聚合物化学
- 食品科学 食品科学 食品科学
背景情况:
- 基于酸盐的材料由于其生物降解性和生物相容性,对食品包装具有前景.
- 开发具有量身定制性质的交联酸薄膜对于提高食品应用中的性能至关重要.
研究的目的:
- 为了合成和表征聚乙烯糖醇 (PEG) 交叉链接的O-碳素甲基 (O-CMC-PEG) 薄膜.
- 研究PEG含量对食品包装O-CMC-PEG薄膜的物理化学,机械和抗菌性能的影响.
主要方法:
- 合成异酸盐终结的PEG交联剂.
- 在温和条件下,O-carboxymethyl chitosan (O-CMC) 与PEG剂的交叉连接.
- 使用FT-IR和1H NMR进行表征.
- 评价薄膜的性能,包括抗拉强度,水蒸气屏障,降解和抗菌活性.
主要成果:
- 通过O-CMC-PEG薄膜与尿素链接成功合成.
- 交叉连接改善了拉伸性能和水蒸气屏障,但高PEG含量导致了微相分离和性能降低.
- 降解速度和水的敏感性主要取决于交叉连接的程度.
- 片表现出对大肠杆菌和金黄色杆菌的广泛抗菌活性.
- 含有6%PEG的O-CMC-PEG薄膜显示为食品包装的最佳性能.
结论:
- 与PEG交联的O-CMC-PEG薄膜为食品包装应用提供了一个有希望的替代方案.
- 优化交叉连接度是平衡片特性的关键.
- 开发的片显示了通过提高包装性能和抗菌活性来延长食品的保质期的潜力.
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