一种抗菌复合膜及其制备方法
By combining carboxylated pullulan, Chaetomium globulus polysaccharide, and nisin, the moisture-barrier and antibacterial properties of pullulan were improved, and an antibacterial composite film suitable for fruit and vegetable preservation was prepared.
CN116554513BActive Publication Date: 2026-07-17山东弥美生物科技股份有限公司
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- 山东弥美生物科技股份有限公司
- Filing Date
- 2023-03-13
- Publication Date
- 2026-07-17
AI Technical Summary
Technical Problem
Pullulan has poor film-forming moisture barrier properties and lacks antibacterial properties. Existing modification methods are insufficient to simultaneously improve its moisture barrier and antibacterial properties.
Method used
Carboxylated pullulan, Chaetomium globulus polysaccharide, and nisin were combined, and pullulan was modified by esterification. The resulting mixture was then used to prepare an antibacterial composite film by casting.
Benefits of technology
It improves the moisture barrier and antibacterial effect of the membrane, and has a significant antibacterial effect against Staphylococcus aureus and Escherichia coli, making it suitable for fruit and vegetable preservation.
✦ Generated by Eureka AI based on patent content.
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Figure CN116554513B_ABST
Abstract
本发明属于多糖基材料领域，具体涉及一种抗菌复合膜及其制备方法。该复合膜组份中含有：羧基化普鲁兰多糖、球毛壳菌多糖、乳酸链球菌素和甘油。制备步骤如下：将球毛壳菌多糖溶于1％乙酸溶液，添加乳酸链球菌素，完全溶解后加入羧基化普鲁兰多糖配置膜溶液，最后加入甘油作为增塑剂，搅拌均匀，离心脱气，倒入模具中，干燥成膜。本发明的目的主要是改善普鲁兰薄膜亲水性能以及解决天然普鲁兰多糖不具备抗菌活性的问题。本发明普鲁兰多糖通过酯化反应降低了薄膜水蒸气透过性，同时抑菌实验表明，羧基化普鲁兰多糖 / 内生真菌球毛壳菌多糖 / 乳酸链球菌素三者复合对金黄色葡萄球菌和大肠杆菌有较好的抑菌效果。该复合薄膜有望应用于果蔬涂膜保鲜。
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