基于生物炭的银纳米颗粒-聚乙烯基酒精-奇托桑复合膜的抗菌,抗氧化和水果包装能力
Qian Feng1, Bo Fan1, Yu-Cai He2
1School of Pharmacy & School of Biological and Food Engineering, Changzhou University, Changzhou 213164, China.
International journal of biological macromolecules
|November 25, 2023
概括
这项研究开发了一种新的复合膜,使用嵌入在生物炭-聚乙烯酒精-基托矩阵中的银纳米粒子. 由此产生的材料表现出出色的抗菌,抗氧化和热特性,显著延长蓝的保质期.
科学领域:
- 材料科学 材料科学 材料科学
- 纳米技术 纳米技术
- 食品科学 食品科学 食品科学
背景情况:
- 开发先进的包装材料对于食品的保存至关重要.
- 生物炭和银纳米粒子为材料增强提供了独特的特性.
- 聚乙烯醇-基托桑是一种可生物降解的聚合物,在包装中具有潜力.
研究的目的:
- 为了合成和描述一种新的复合膜,将基于生物炭的银纳米颗粒纳入聚乙烯醇-奇托桑矩阵中.
- 为了评估复合膜的物理化学,抗菌和抗氧化特性.
- 评估复合膜在延长蓝的保质期方面的有效性.
主要方法:
- 银纳米粒子被加载到从废麦酒厂的谷物中提取的生物炭上.
- 装有银的生物炭被纳入聚乙烯醇-基托矩阵中,形成一个复合膜 (C-Ag装载的PVA/CS).
- 描述涉及富里埃变换红外光谱,X射线衍射,热重力测量分析,水接触角度和磁盘扩散试验. 在蓝上进行了保质期研究.
主要成果:
- 装有C-Ag的PVA/CS复合膜表现出良好的热稳定性和疏水性.
- 该复合物对大肠杆菌和黄金杆菌表现出显著的抗菌活性.
- 该膜具有高的抗氧化活性,破坏了细菌细胞膜,并通过减少体重减轻和可定位酸含量有效地延长了蓝的保质期.
结论:
- 开发的基于生物炭的银纳米颗粒-聚乙烯醇-基托复合膜具有出色的抗菌和抗氧化特性.
- 这种新材料显示出在活性食品包装中应用的巨大潜力,以提高食品的保存性和延长保质期.
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