微波动态循环阶段连续逆流提取二氢杨梅素

被引：24

作者：

李卫 ^{[1
]}

郑成 ^{[2
]}

宁正祥 ^{[1
]}

机构：

[1] 华南理工大学轻工与食品学院

[2] 广州大学化学化工学院

来源：

化工学报 | 2006年 / 02期

基金：

广东省科技计划;

关键词：

微波提取; 动态循环阶段连续逆流提取; 二氢杨梅素; 藤茶; 动力学模型;

D O I：

暂无

中图分类号：

TQ461 [中草药制剂的生产];

学科分类号：

091003 [林草生态工程学];

摘要：

The process which microwave is applied to dynamic multi-stage countercurrent extraction,namely the process of microwave dynamic multi-stage countercurrent extraction (MDMCE),for extracting dihydromyricetin from Ampelopsis grossedentata was investigated.Comparison of MDMCE and microwave static batch extraction (MSBE) demonstrated that both the driving force of mass transfer and extraction efficiency of MDMCE were higher than those of MSBE.The optimum extraction conditions of 5 stages MDMCE obtained by orthogonal design were as follows:10 min extracting time for 5 stages MDMCE(2 min for every stage), 110 ℃, 1∶30 material to solvent ratio, 600 W microwave power. Under these conditions the extraction yield of dihydromyricetin and percentage of dihydromyricetin in residue were 92.2 % and 3.1% respectively. A kinetic model of single vessel for MDMCE was developed and the functional relation between dihydromyricetin concentration and extraction time was ln(ΔC)=0.2985lnt-12.52.

引用

页码：376 / 379

页数：4

共 4 条

[1]

微波辅助提取淫羊藿饮片中淫羊藿苷的热质同向传递数值模拟 [J].