VD_3-壳聚糖复合物的超临界二氧化碳注入法制备工艺  

Supercritical Carbon Dioxide Impregnation of Vitamin D_3 into Chitosan Particles

作　　者：洪流[1] 沈佩琼[1] 孙丽君[1] 赵亚平[1] 

机构地区：[1]上海交通大学化学化工学院,上海200240

出　　处：《食品科学》2010年第12期21-24,共4页Food Science

基　　金：国家"863"计划项目(2007AA10Z350)

摘　　要：以壳聚糖粒子为载体,VD3为模型物,采用超临界二氧化碳注入法制备VD3-壳聚糖复合物。采用紫外测试法考察过程参数压力、温度以及时间对VD3在VD3-壳聚糖复合物中负载量的影响。结果表明:随着压力和温度的增加,VD3负载量均为先增大后减小;当压力20MPa、温度35℃时,VD3负载量达到最大值;当温度和压力一定时,时间由1h增至3h,VD3负载量也有不同程度的增加。The impregnation of vitamin D3 into chitosan particles using supercritical CO2 fluid was investigated with respect to the effects of pressure,temperature and length of impregnation time evaluated by UV-vis spectroscopy.The results showed that with increasing pressure,VD3 impregnation amount initially increased and then decreased;as temperature increased,an identical change pattern in VD3 impregnation amount was observed.VD3 impregnation amount reached its maximum value under the conditions of 20 MPa and 35 ℃.Increasing length of impregnation time from 1 to 3 h resulted in a higher VD3 impregnation amount when pressure and temperature kept unchangeable.

关 键 词：超临界二氧化碳注入法 VD3-壳聚糖复合物 制备 

分 类 号：TS201.1[轻工技术与工程—食品科学]