大学化学综合实验教学实践——紫草药材提取实验

Teaching Practice of Chemistry Comprehensive Experiment in University with Extraction Experiment of Arnebia Euchroma as Example

常见中药材紫草的主要活性成分为羟基萘醌类化合物,其具有多种药理作用。将紫草中羟基萘醌类化合物的提取引入有机化学基础实验课程,对于可变参数——提取时间和加醇倍量进行研究,学生自行设计并实施实验。该实验综合使用有机化学及分析化学实验基础操作的同时,提升学生学习兴趣,提高学生实验设计、数据处理及分析的能力。

The main active components of Arnebia euchroma,a common Chinese herbal medicine,are naphthoquinone compounds,which have various pharmacological effects.This research on the extraction process of arnebia euchroma materials is introduced into the organic chemistry experiment course.Two variable parameters of extraction solvent ratio and extraction time were studied.Students design and conduct experiments by themselves.The experiment comprehensively uses the basic operations of organic chemistry and analytical chemistry experiments.At the same time,this experience enhances students'study interests and experimental design,data processing and analysis.