低聚异麦芽糖为基质挤压法制备玻璃化抗坏血酸胶囊

Encapsulation of Ascorbic Acid in Glassy Isomalto-Oligosaccharides by Extrusion

DOI：

中文关键词: 挤压 玻璃化转变 低聚异麦芽糖 抗坏血酸

英文关键词: extrusion glass transition isomalto-oligosaccharides ascorbic acid

基金项目:国家“十一五”科技支撑项目(2006BAD27B04)

摘要点击次数: 177

全文下载次数: 505

中文摘要:

采用挤压法制备了低聚异麦芽糖为基质的抗坏血酸(AA)玻璃化胶囊。选择了10%和16%两种AA质量分数的配方,在螺杆转速60 r/min,喂料速度1 kg/h的条件下,研究了3种挤压腔温度时的挤压工艺。探讨了挤压过程中电机扭拒、模头压力等的变化规律。差式扫描量热法、X射线对产品性质进行了表征。对挤压产品产率和载量等理化指标进行了分析。结果表明:提高挤压腔温度可以减小电机扭矩和模头压力。AA质量分数对3种温度条件下的电机扭矩影响较小。当挤压腔为中温和低温时,AA质量分数的增加可以使模头压力减小。两种质量分数的AA得到了很好的包埋,挤压产物的玻璃化转变温度随着AA质量分数增加而降低。X射线表明AA以溶解形式分散于基质中,形成了固溶体。

英文摘要:

In this manuscript,10% and 16% Ascorbic acid(AA) was encapsulated in glassy isomalto-oligosaccharides by extrusion.The measuring feeder was set to obtain a flow rate of 1 kg/h of premixed material and screw speed was maintained at 60 r/min to study effect of barrel temperature,torque,and die head pressure on the AA yield,loading capacity and moisture content of the products.It was found that high barrel temperature could make motor torque and die head pressure decrease.At middle and low barrel temperature,torque decreased with increased AA.AA could be encapsulated successfully.The glass temperature was decreased with increased AA.The result of X-ray diffraction indicated that the formulation is a glassy solid solution.

查看全文 查看/发表评论 下载PDF阅读器