壳聚糖/纳米蒙脱土复合膜的制备及性能研究  

Preparation and properties of chitosan/nano-montmorillonite composite film

作　　者：刘晓菲[1] 覃宇悦[1] 程春生[1] 孙莎[1] 

机构地区：[1]昆明理工大学化学工程学院,云南昆明650224

出　　处：《食品工业科技》2011年第6期366-367,466,共3页Science and Technology of Food Industry

基　　金：昆明理工大学人才科研启动项目

摘　　要：以插层复合法制备壳聚糖/纳米蒙脱土复合膜,测试其机械性能、水蒸气透过率和阻氧性能,同时通过扫描电子显微镜表征其结构。结果表明,添加蒙脱土可提高壳聚糖膜的机械性能与阻氧性,降低水蒸气透过率,应用于枇杷保鲜时,能有效降低果实的腐败程度和VC等成分的损失,对枇杷保鲜效果显著。Chitosan/nano-montmorillonite composite film was prepared with chitosan and montmorillonite by intercalation method.Mechanical properties,water vapor permeability and oxygen permeability were tested.The results showed that tensile strength,elongation ratio and oxygen permeability were improved,water vapor permeability was lowered by adding montmorillonite into chitosan solution.Chitosan/nano-montmorillonite composite film can effectively delay the eruption rate,reduce the loss of vitamin C,total sugar and total acid of loquat.It can prolong the shelf life of loquat.

关 键 词：壳聚糖 纳米蒙脱土 复合膜 性能 保鲜 

分 类 号：TS205.9[轻工技术与工程—食品科学]