摘要
应用单因素试验和正交试验,考察提取剂类型、微波功率、微波辐射时间、液料质量比、液料湿度和物料粒度对提取效果的影响,得到微波辅助提取香附精油的最佳条件:以石油醚为溶剂,微波功率450W,萃取2次,每次120s,每次液料质量比为8∶1。萃取液进行真空浓缩至无溶剂蒸出,得精油粗产品。往精油粗产品中加入乙醇溶解,放入-15℃冰箱中冷冻48h,离心分离去除树脂状物质,过滤,滤液进行真空浓缩,即得当归精油,产率约3.4%,纯度96.1%。
The effects of extraction variables, especially solvent type, microwave power, the microwave irradiation time, materials-solvent mass ratio, moisture content and particle size of materials on extraction efficiency were investigated using single factor test and orthogonal method. The optimum conditions are obtained: Petroleum ether as solvent, extracting twice, microwave power 450 W, irradiation time 120 s, solvent-material mass ratio 8∶1. The extracted solution was concentrated under vacuum to give crude es...
出处
《食品与机械》
CSCD
北大核心
2007年第5期70-73,共4页
Food and Machinery
关键词
精油
当归
微波辅助提取
Essential oils
Angelica sinensis
Microwave-assisted extraction
