大学化学 >> 2019, Vol. 34 >> Issue (3): 42-46.doi: 10.3866/PKU.DXHX201807053

化学实验 上一篇    下一篇

茶叶中咖啡因的提取实验装置的改进与探索

吴云英1,谢建新1,伍贤学1,陈文静1,苟高章2,*()   

  1. 1 玉溪师范学院化学生物与环境学院, 云南 玉溪 653100
    2 红河学院理学院, 云南 蒙自 661199
  • 收稿日期:2018-07-28 录用日期:2018-09-04 发布日期:2019-03-09
  • 通讯作者: 苟高章 E-mail:hhxylxyhxx@126.com
  • 基金资助:
    玉溪师范学院教学改革研究与实践项目(201739);红河学院教学建设与改革项目(JJG171009);云南省教育厅科学研究基金项目资助(2018JS421);云南省应用基础研究计划青年项目(2017FD155)

Improvement and Exploration of Experimental Setup for Extraction of Caffeine from Tea

Yunying WU1,Jianxin XIE1,Xianxue WU1,Wenjing CHEN1,Gaozhang GOU2,*()   

  1. 1 College of Chemistry Biology and Environment, Yuxi Normal University, Yuxi 653100, Yunnan Province, P. R. China
    2 School of Science, Honghe University, Mengzi 661199, Yunnan Province, P. R. China
  • Received:2018-07-28 Accepted:2018-09-04 Published:2019-03-09
  • Contact: Gaozhang GOU E-mail:hhxylxyhxx@126.com
  • Supported by:
    玉溪师范学院教学改革研究与实践项目(201739);红河学院教学建设与改革项目(JJG171009);云南省教育厅科学研究基金项目资助(2018JS421);云南省应用基础研究计划青年项目(2017FD155)

摘要:

“茶叶中咖啡因的提取”是有机化学实验的一个经典实验,本文对该实验所用的原索氏提取器进行改进,得到内通气集热式索氏提取器并用于实验教学。通过对照实验,对改进索氏提取器和原索氏提取器的提取效果进行比较。结果表明,改进装置具有原装置的功能和特点,且提取时间更短、提取温度和提取率更高,可在高校推广使用。

关键词: 咖啡因, 有机化学实验, 索氏提取器, 改进装置

Abstract:

The extraction experiment of caffeine from tea was a classic experiment in Organic Chemistry Laboratory. In this paper, the original Soxhlet extractor device used in the experiment was modified and obtained the internal ventilation Soxhlet extractor, which was used in laboratory teaching. The extraction effects of the improved Soxhlet extractor and the original Soxhlet extractor were compared by the control experiment. The results showed that the improved device keeps the function and characteristics of the original devicewith the shorter the extraction time, higher extraction temperature and the extraction rate. Thus, it may provide an alternative for college organic laboratory teaching.

Key words: Caffeine, Organic chemistry laboratory, Soxhlet extractor, Device improvement

MSC2000: 

  • G64