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ERIC Number: EJ824938
Record Type: Journal
Publication Date: 2008-Jan
Pages: 2
Abstractor: As Provided
Reference Count: 9
ISBN: N/A
ISSN: ISSN-0021-9584
Analysis of Peppermint Leaf and Spearmint Leaf Extracts by Thin-Layer Chromatography
Pelter, Libbie S. W.; Amico, Andrea; Gordon, Natalie; Martin, Chylah; Sandifer, Dessalyn; Pelter, Michael W.
Journal of Chemical Education, v85 n1 p133-134 Jan 2008
In this inquiry-based activity, the usefulness of thin-layer chromatography (TLC) to visualize the difference between spearmint and peppermint is explored. The experiment may be used in any class where TLC is discussed from high school to college. We have used this activity with science majors in an organic chemistry laboratory, with non-science majors in a brewing science class, and in a general science class for elementary education majors. The experiment can be completed in a two-hour period. R-(-)-Carvone and (1R,2S,5R)-(-)-menthol are responsible for the cool and minty sensations associated with these plants. These observable properties and the structural formula of the compounds provide the basis for a good discussion on structure-activity relationships. (Contains 3 figures and 1 table.)
Division of Chemical Education of the American Chemical Society. Subscription Department, P.O. Box 1267, Bellmawr, NJ 08099-1267. Tel: 800-691-9846; Tel: 856-931-5825; Fax: 856-931-4115; e-mail: jchemed@egpp.com; Web site: http://www.jce.divched.org
Publication Type: Journal Articles; Reports - Evaluative
Education Level: High Schools; Higher Education
Audience: N/A
Language: English
Sponsor: N/A
Authoring Institution: N/A