摘要
研究加压提取地榆中黄酮的最佳提取工艺。探讨了乙醇浓度、料液比、粒径、提取压力、提取温度和提取时间6个因素对黄酮得率的影响,并通过正交试验优化,确定了加压提取地榆中黄酮的最佳条件。结果表明加压提取地榆中黄酮的最佳提取条件:浸提温度120℃,料液比为1∶20,提取溶剂为60%的乙醇,浸提时间为30min,浸提压力为5 kg/cm2,粒径为40目,在该条件下黄酮提取率可达17.35%。与回流提取法相比,加压浸提法可显著提高浸提率。
The extraction process of flavonoids from Sanguisorba officinalis root using pressurized liquid extraction（PLE） was studied and compared with reflux extraction.Significant parameters affecting PLE procedure such as the concentration of ethanol,solid-liquid ratio, temperature,pressure,time,and material size were discussed and optimized by the orthogonal test.The results showed that the optimized conditions were as follows：the extraction solvent 60% ethanol water solution,the material size 40 mesh,ratio of mass of raw material to volume of extraction solvent 1：20,extraction temperature 120 ℃,extraction 30 min under 5.0 kg/cm2 of pressure.The recovery of extraction could reach 17.35%.Comparing with reflux extraction,PLE can obviously increase the recovery of extraction.
出处
《天然产物研究与开发》
CAS
CSCD
2011年第3期449-452,共4页
Natural Product Research and Development
基金
青岛科技大学科研启动基金资助(qust20071217)
山东省中青年科学家科研奖励基金(BS2009SW033)
关键词
地榆根
黄酮
加压提取
Sanguisorba officinalis root
Flavonoids
pressurized liquid extraction
