Abstract
Caffeine—1,3,7-trimethylxanthine—is one of three common alkaloids found in coffee, cola nuts, tea, cacao beans, mate, and other plants. The other two are theophylline and theobromine (1). The effects of caffeine are commonly reported to be as a stimulant of the central nervous system, cardiac muscle, and the respiratory system. It is also a common diuretic and delays fatigue (1). It has also been reported (1) that caffeine in combination with an analgesic, for example, aspirin, can be used in the treatment of headaches. However, there are few data to substantiate its efficacy in this role.
This is a preview of subscription content, log in via an institution to check access.
Access this chapter
Tax calculation will be finalised at checkout
Purchases are for personal use only
References
Lopez-Ortiz A. (1997) Frequently asked questions about coffee and caffeine, internet address: http://www.cs.unb.ca/-alopez-o/caffaq.html
Dean J. R. (1993) Applications of supercritical fluids in industrial analysis. Blackie Academic and Professional, Glasgow, U.K.
Zosel K. (1964) German Patent 1,493,190.
Patrick E., Masanori Y., Yoshio Y., and Maneo S. (1991) Infrared and nuclear magnetic resonance spectrometry of caffeine in roasted coffee beans after separation by preparative supercritical fluid chromatography. Anal. Sci. 7, 427–431.
Braumann U., Handel H., Albert K., Ecker R., and Spraul M. (1995) On-line monitoring of the supercritical fluid extraction process with proton nuclear magnetic resonance spectroscopy. Anal. Chem. 67, 930–935.
Heglund D. L., Tilotta D. C, Hawthorne S. B., and Miller D. J. (1994) Simple fiber-optic interface for on-line supercritical fluid extraction-Fourier transform infrared spectrometry. Anal. Chem. 66, 3543–3551.
Ndiomu C. F. and Simpson C.F. (1988) Some applications of supercritical fluid extraction. Anal. Chim. Acta 213, 237–243.
Author information
Authors and Affiliations
Editor information
Editors and Affiliations
Rights and permissions
Copyright information
© 2000 Humana Press Inc.
About this protocol
Cite this protocol
Dean, J.R., Liu, B., Ludkin, E. (2000). Supercritical Fluid Extraction of Caffeine from Instant Coffee. In: Williams, J.R., Clifford, A.A. (eds) Supercritical Fluid Methods and Protocols. Methods In Biotechnology™, vol 13. Humana Press. https://doi.org/10.1385/1-59259-030-6:17
Download citation
DOI: https://doi.org/10.1385/1-59259-030-6:17
Publisher Name: Humana Press
Print ISBN: 978-0-89603-571-3
Online ISBN: 978-1-59259-030-8
eBook Packages: Springer Protocols