摘要
以β-环糊精为载体,α-生育酚为模型物,采用超临界二氧化碳注入法制备α-生育酚/β-环糊精固体复合物。考察注入压力、注入温度和注入时间等参数对α-生育酚负载量的影响以及复合物在水相中的分散性。用紫外-分光光度法测定复合物的负载量,FTIR、DSC和TGA对复合物进行表征。结果表明:随着注入压力和温度的增加,α-生育酚的负载量先增大后减小,当温度35℃、压力18MPa、注入时间1h时,负载量最高达38.7%;制备的复合物能在水相中均匀分散。
The preparation ofα-tocopherolβ/-cyclodextrin complex by supercritical carbon dioxide impregnation technology was studied.The effects of process parameters,including pressure,temperature and reaction time onα-tocopherol loading and the disperability ofα-tocopherolβ/-cyclodextrin complex in water were studied.The determination ofα-tocopherol loading was carried out using ultraviolet spectrophotometer,and FTIR,DSC and TGA were used for the characterization ofαtocopherolβ/-cyclodextrin complex.The results showed thatα-tocopherol loading first rose and then declined with increasing pressure and temperature,and reached up to 38.7%at 35℃,18 MPa and impregnation time of 1 h,and that the prepared complex could disperse homogeneously in water.
出处
《食品科学》
EI
CAS
CSCD
北大核心
2011年第8期33-36,共4页
Food Science
基金
国家"863"计划项目(2007AA10Z350)
国家自然科学基金项目(20976103)
作者简介
沈佩琼（1985--），女，硕士研究生，研究方向为超临界流体应用。E—mail：shenpq@sjtu．edu．cn
通信作者：赵亚甲（1962--），男，教授，博士，研究方向为超临界流体的化学化工过程及纳米营养物制备。E-mail：ypzhao@sjtu．edu．cn
