超临界CO_2静动态结合萃取姜黄油的工艺  

Static and Dynamic Extraction of Turmeric Oleoresin by Supercritical CO_2 Fluid

作　　者：李湘洲[1] 张炎强[1] 

机构地区：[1]中南林业科技大学材料科学与工程学院,湖南长沙410004

出　　处：《北京理工大学学报》2007年第4期366-369,共4页Transactions of Beijing Institute of Technology

基　　金："十一五"国家科技支撑计划重点项目;湖南省教育厅科学研究项目(05B031)

摘　　要：以姜黄为原料,研究超临界CO2流体梯度升压与静动态结合萃取姜黄油的工艺研究,并利用均匀试验与正交试验进行优化.实验得出超临界流体萃取姜黄油的优化工艺为:原料含水率5.5%-6.0%之间,先在压力10 MPa、温度30℃的状态下静态预置15 min,后在压力30 MPa,温度45℃,CO2流量40 L/h的条件下动态循环萃取120 min.结果表明,姜黄油的萃取率可达8.95%,比水蒸气蒸馏法提高了4倍,且香气纯正,证明超临界CO2流体静动态结合萃取姜黄油的工艺切实可行.Processing of turmeric oleoresin from turmeric by gradient boost and static-dynamic extraction of supercritical CO2 fluid are studied. Orthogonal design and homogenous uniform design are applied to optimize the processing parameters. The optimum conditions observed were： water content of raw material at 5.5 % -6.0 %, preexistence at 10 MPa, 30 ℃, 15 min, then recirculating at 30 MPa, 45 ℃, 40 L/h, 120 min. The result showed that the extraction yield of turmeric oleoresin was 8.95 % by supercritical CO2. Compared with traditional steam distillation, this method possesses higher efficiency and shorter time. The processing of supercritical CO2 extraction of turmeric oleoresin is seen to be practical.

关 键 词：姜黄油 梯度升压 静动态结合萃取 超临界CO2流体 

分 类 号：TQ91[化学工程]