超临界CO_2流体萃取洋葱油研究  

Study on the Supercritical Carbon Dioxide Extraction of Onion Oil

作　　者：李丽梅[1] 倪元颖[2] 

机构地区：[1]河北省农林科学院遗传生理研究所,河北石家庄050051 [2]中国农业大学食品科学与营养工程学院,北京100083

出　　处：《河北农业科学》2006年第4期5-8,共4页Journal of Hebei Agricultural Sciences

基　　金：国家高新技术研究发展计划(863计划)资助项目(2001AA248021)

摘　　要：以冻干洋葱粉为试材,研究了超临界CO2流体萃取洋葱油技术中萃取压力、萃取温度、萃取时间以及夹带剂用量等对洋葱油得率的影响,并确定了萃取的适宜参数。结果表明,以冻干红洋葱粉为原料,加入无水乙醇15%为夹带剂,萃取压力28MPa,萃取温度42℃,萃取时间216 m in,洋葱油得率可达到0.483%。Supercritical carbon dioxide extraction on a pilot-scale was applied to produce onion oil from freeze-dried onion powders.The aim was to obtain the optimal conditions for extracting onion oil.A polynomial model was established on the data.The statistical analysis showed that the extracting pressure,temperature and time have significant influence on the yield of onion oil.The optimal parameters were that extracting pressure,28 MPa;extracting temperature,42 ℃;extracting time,216 min.At this condition,the yield of onion oil could be 0.483%.

关 键 词：超临界CO2 萃取 洋葱油 

分 类 号：S633.2[农业科学—蔬菜学]