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  Home > JCE Print > Journal of Chemical Education > Issues > 1996  > December  >
In the Laboratory
Soxhlet Extraction of Caffeine from Beverage Plants
D.J. Adam and J. Mainwaring
Department of Science and Mathematics, Halton College of Further Education, Kingsway, Widnes, Cheshire WA8 7QQ, U.K.

Michael N. Quigley
Department of Chemistry, Richard King Mellon Hall of Science, Duquesne University, Pittsburgh, PA 15282

Cover
December 1996
Vol. 73 No. 12
p. 1171
Abstract
A simple procedure is described for the extraction of caffeine from coffee beans or granules, tea leaves, mat leaves, etc. Since dichloromethane and several other hazardous substances are used, the procedure is best performed in a fume hood. Following extraction, melting point determination of the crystalline precipitate establishes its positive identity. Includes 33 references.
More Information
*  Citation
 Adam, D. J.; Mainwaring, J.; Quigley, Michael N. J. Chem. Educ. 1996 73 1171.
*  Keywords
 Organic Chemistry
*  History
 Created:
Last Updated:		 August 5, 1999
February 21, 2006
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