摘要
研究以壳聚糖(chitosan,CS)和阿拉伯胶(acacia gum,GA)作为包裹鱼油的壁材,通过复凝聚反应制备CS/GA复凝聚鱼油微胶囊。首先通过单因素分析法,对复凝聚行为的影响因素进行研究。结果表明,当m(CS)∶m(GA)为1∶6,1∶7,壁材总浓度为3%,4%,5%,pH值为4.0,4.5,5.0,反应温度为20℃,反应时间为30min时,CS与GA具有较好的复凝聚效果。以此为基础,在保证较好的复凝聚效果的前提下,确定了CS/GA复凝聚鱼油微胶囊的最佳制备工艺:CS/GA壁材总浓度为5%,m(CS)∶m(GA)为1∶7,芯壁比为1∶2,pH值为4.5,反应温度为20℃,复凝聚反应时间为30min。在最佳制备工艺下制备的CS/GA复凝聚鱼油微胶囊呈规整的球形,分散性良好;粒径分布均匀,平均粒径为16.3μm;对鱼油的包埋率和壁材的利用率分别为75.33%和81.01%。
In the present work,CS/GA fish oil microcapsules were prepared with chitosan(CS)and acacia gum(GA)as the wall materials via a complex coacervation method.The influences of different reaction conditions on complex coacervation were studied with the single factor analysis.The results showed that the coacervate yield and transmittance of equilibrium phase could be affected by the mass ratios of CS and GA,total concentrations of CS/GA and pH values.The micrographs were employed to optimize the preparation conditions for CS/GA fish oil microcapsules.The optimal formulation was obtained from micrographs9i.e.the mass ratio of CS to GA was1:,the total concentration of CS/GA was5%,the core-wall ratio was1:2,the pH value was4.5,the reaction temperature was20°C r and the reaction time was30min.The surface morphology and particle size of the CS/GA fish oil microcapsules prepared under the optimized condition were characterized.The results showed that the microcapsules were highly uniform microspheres9and had an average particle size of16.3jum.The entrapment efficiency for fish oil and utilization ratio of wall materials were75.33%and81.01%9respec-tively.In conclusion,the optimal preparation conditions could be applied to the microencapsulation of fish oil for food applications.
作者
刘恺
胡莉
党奇峰
刘成圣
LIU Kai;HU Li;DANG Qifeng;LIU Chengsheng(College of Marine Life Sciences,Ocean University of China,Qingdao 266003,China)
出处
《功能材料》
EI
CAS
CSCD
北大核心
2017年第8期107-112,共6页
Journal of Functional Materials
基金
国家自然科学基金资助项目(31400812)
青岛市应用基础研究计划资助项目(15-9-1-42-jch)
中国海洋大学本科生研究训练计划资助项目(OUC-SRTP)
关键词
壳聚糖
阿拉伯胶
复凝聚
鱼油微胶囊
制备优化
表征
chitosan
acacia gum
complex coacervation
fish oil microcapsule
optimization
characterization
作者简介
刘恺（1996 -），女，山东青岛人，师承刘成圣教授、党奇峰副教授，从事生物材料和生物活性物质研究。;通讯作者;通讯作者：刘成圣，E-mail: liucsouc@126.com
