食品科学2017，Vol.38Issue(9)：91-98,8.DOI:10.7506/spkx1002-6630-201709015
壳聚糖/微晶甾醇可食性复合膜的制备、性能及结构表征
Preparation, Properties and Structural Characterization of Chitosan/Microcrystalline Sterol Composite Edible Films
摘要
Abstract
Chitosan/microcrystalline sterol composite edible films were prepared by flow casting method using chitosan as a film-forming material,where phytosterols were added for their antioxidant and antimicrobial properties.With increasing addition of phytosterols up to 12％ (relative to the mass of chitosan),the tensile strength and elongation at break of composite films declined gradually,the solubility and swelling degree gradually increased,and the water vapour permeability coefficient remarkably reduced,indicating an improved moisture barrier property after the addition of sterol.In addition,the superoxide anion and hydroxyl radical scavenging capacities of films were improved remarkably,and the antimicrobial activity against Staphylococcus aureus and Escherichia coli were significantly enhanced.The compatibility of composite films was analyzed by infrared spectroscopy (FT-IR),scanning electron microscopy (SEM),X-ray diffraction (XRD) and thermogravimetry (TG).The films with 9％ sterol added showed good performance.Moreover,chitosan-sterol complexes were formed by strong intermolecular hydrogen bonding interactions,and the blend system had good compatibility.关键词
壳聚糖/植物甾醇/可食性复合膜/性能/结构表征Key words
chitosan/phytosterols/edible composite film/performance/structural characterization分类
轻工纺织引用本文复制引用
陈红,李彩云,李侠,李玉扩,邬欣蕾,王大为..壳聚糖/微晶甾醇可食性复合膜的制备、性能及结构表征[J].食品科学,2017,38(9):91-98,8.基金项目
“十二五”国家科技支撑计划项目(2011AA100805) （2011AA100805）
吉林省重大科技攻关项目(2012ZDGG007) （2012ZDGG007）
吉林省青年科研基金项目(20140520181JH) （20140520181JH）
吉林农业大学科研启动基金项目(201639) （201639）
