| 摘要: |
| 减压内部沸腾法是用少量低沸点解吸剂润湿被提取物料粉末,使其中的有效成分充分解吸,然后加入一定温度的热提取溶剂并迅速减压,使渗透到植物组织内部的解吸剂首先沸腾,强化提取过程。用减压内部沸腾法提取金银花中绿原酸,在70℃下提取绿原酸的得率为9.0%,浸膏中绿原酸含量为18.5%,提取2次共需时间8min。与传统方法相比,提取温度减少30℃,提取速度仍然快11.5倍,杂质提出量减少12%。 |
| 关键词: 绿原酸 金银花 提取 减压 内部沸腾 |
| DOI： |
| 投稿时间：2005-09-09修订日期：2005-10-11 |
| 基金项目:广西大学科学技术研究重点基金项目(编号:2003ZD05)资助 |
|
| The Extraction of Chlorogenic Acid from Flos Lonicerae by Decompressing Inner Ebullition |
|
HAO Rui-ran, WEI Teng-you
|
| (College of Chemistry and Chemical Engineering, Guangxi University, Nanning, Guangxi, 530004, China) |
| Abstract: |
| A new method was put forward for extracting the activity components in the plant by decompressing inner ebullition.In this method, a little low boiling point solvent was first used to saturate the plant in order to make the activity components desorbed adequately, and then hot solvent was added, at the same time, the pressure of extraction was decompressing rapidly.As a result the low boiling point solvent inside the plant began to boil and the extraction was intensified.The experimental results from extracting chlorogenic acid in Flos Lonicerae indicated that the extraction ratio was 9.0% at 70℃, the content of chlorogenic acid was 18.5% in extract and two extractions need only 8 minutes.Comparison with traditional method, the temperature was 30℃ lower, the extracting speed was 11.5 times fast and the quantity of impurity was 12% lower. |
| Key words: chlorogenic acid flos lonicerae extraction decompressing inner ebullition |
