Journal
JOURNAL OF CHEMICAL EDUCATION
Volume 98, Issue 9, Pages 3004-3010Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acs.jchemed.1c00451
Keywords
Upper-Division Undergraduate; Laboratory Instruction; Hands-On Learning/Manipulatives; Separation Science; Gas Chromatography; Mass Spectrometry; Analytical Chemistry; Natural Products; Drugs/Pharmaceuticals
Funding
- National Natural Science Foundation of China [21705165]
- Priority Academic Program Development of Jiangsu Higher Education Institutions
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This experiment involves extracting, separating, and identifying essential oils from a natural plant using two different extraction devices. The chemical compounds of the oils are analyzed by GC-MS to compare the differences in extraction methods. The experiment helps students understand the extraction techniques and the benefits of teamwork.
A comprehensive undergraduate experiment about extraction, separation, and identification of essential oils (EOs) from a natural plant is described. Acori tatarinowii Rhizoma (ATR) was used as the raw plant material. Two devices (Soxhlet and Clevenger) with different extraction principles were employed for EO extraction from ATR, separately. The chemical compounds of the extracted EOs were separated and identified by gas chromatography-mass spectrometry (GC-MS). The differences in the chemical components obtained by the two extraction devices were compared. The experiment can give students a deep insight into the difference between the extraction methods. Additionally, the experiment can enable students to learn how to use GC-MS to identify the chemical structures of the extracted complex samples. The grouped students who performed this experiment gained a deep understanding of extraction and detection techniques, as well as the benefits of teamwork.
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