超临界二氧化碳注入法制备α-生育酚/β-环糊精复合物  

Preparation of α-Tocopherol/β-Cyclodextrin Complex Using Supercritical Carbon Dioxide Impregnation Technology

作　　者：沈佩琼[1] 孙丽君[1] 赵翔宇 赵亚平[1] 

机构地区：[1]上海交通大学化学化工学院,上海200240 [2]江南大学化学与材料工程学院,江苏无锡214122

出　　处：《食品科学》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)

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.

关 键 词：超临界二氧化碳注入法 Α-生育酚 Β-环糊精 复合物 

分 类 号：TS201.1[轻工技术与工程—食品科学]