相关实验视频

Updated: Sep 10, 2025

Thin-layer Chromatographic TLC Separations and Bioassays of Plant Extracts to Identify Antimicrobial Compounds

Thin-layer Chromatographic TLC Separations and Bioassays of Plant Extracts to Identify Antimicrobial Compounds

Published on: March 27, 2014

用薄层染色学分析食物提取物:一个STEM宣传活动

Tu M Ho¹, Anna I Elizondo¹, Jose G Urbiola¹

¹Department of Chemistry, The University of Texas at San Antonio (UTSA), San Antonio, Texas 78249-0698, United States.

Journal of chemical education

|August 25, 2025

概括

这项研究使用了提取和薄层染色学 (TLC) 等食品化学技术,让中高中生参与现实科学应用. 参与者了解化学如何从日常物品中分离化合物.

科学领域:

化学学
科学教育

背景情况:

化学外展项目对于让年轻学习者参与到STEM中至关重要.
实践活动展示了科学原则的实际应用.

研究的目的:

为八年级到十二年级的学生介绍化学提取和薄层染色学 (TLC).
为了说明化学在分析食物中的自然化合物的现实应用.

主要方法:

使用乙醇或乙烯酸提取熟悉的食品.
通过乙烯酸乙烯和环素溶剂系统进行细层染色学 (TLC) 分析.
在开发后使用染料可视化分离的化合物.

主要成果:

薄层染色学成功地从各种食物提取物中分离出化合物.
参与者通过自我选择的提取物重复TLC分析获得实践经验.
这项活动有效地展示了化学分离技术.

结论:

提取和TLC是分析天然产品中的化合物的有效方法.
这项外展活动成功地让学生参与了应用化学.
该计划强调了STEM技能在日常生活中的相关性.

关键词:

提取方式推广活动科学方法薄层染色学 (TLC)

更多相关视频

A Straightforward Method for Glucosinolate Extraction and Analysis with High-pressure Liquid Chromatography HPLC

A Straightforward Method for Glucosinolate Extraction and Analysis with High-pressure Liquid Chromatography HPLC

Published on: March 15, 2017

A Simple Fractionated Extraction Method for the Comprehensive Analysis of Metabolites, Lipids, and Proteins from a Single Sample

A Simple Fractionated Extraction Method for the Comprehensive Analysis of Metabolites, Lipids, and Proteins from a Single Sample

Published on: June 1, 2017

相关概念视频

Thin-Layer Chromatography (TLC): Overview

Thin-Layer Chromatography (TLC): Overview

Thin-layer chromatography (TLC) is a chromatography technique that separates compounds based on their polarity. TLC typically uses polar silica gel, a form of silicon dioxide, as the stationary phase. The silica gel contains hydroxyl (OH) groups on its surface, which form hydrogen bonds with polar compounds, influencing their adhesion to the stationary phase.
To begin the analysis, a mixture of compounds is spotted on the starting line on the TLC plate using a thin capillary. The bottom of the...