Abstract
Coffee and tea both contain caffeine and are the most widely used stimulants in our society. They are valued all over the world either as day-to-day drinks or as semi-luxury beverages. In consequence, raw green coffee and tea together constitute, after wheat, the world’s second largest cultivated crop. In 1990, for example, the world production for green coffee was about 5.5 million tons, the most important cultivation areas being in South America and Africa. About 70% of this production was exported to Europe (2.5 millions tons) and North America (1.5 million tons). The market in Asia is much smaller, but is increasing particularly in Japan. Agreements regulating the international coffee trade are described by McClumpha [1]. These are designed to stabilise the market which can suffer from periods of oversupply and then shortage brought about, for example, by frost or drought damage in a major producing area.
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References
McClumpha, A.D. (1988), The trading of green coffee, Chapter 1 inCoffeeVol. 6 Commercial and Technico-Legal Aspects(eds. R.J. Clarke and R. Macrae), Elsevier, London.
F.O. Licht’s International Coffee Report, October 1990.
OIC Document DB-3206/90.
International Tea Committee (1990) Annual Bulletin of Statistics.
Viani, R. (1986) Coffee, in Ullmann’s Encyclopedia of Industrial chemistry (1990), Vol. A7, 5th edn., VCH, Weinheim, pp. 315–339.
James, J.E. (1991)Caffeine and HealthAcademic Press, London.
Wurziger, J. (1982) Tee, in Ullmann’s Encyklopädie der technischen Chemie, Vol. 22, 4th edn., VCH, Weinhiem, pp. 405–410.
United States of America Coffee Drinking Study, Winter 1989 (1984).
European Coffee Report 1988.*
European Coffee Report 1989.*
European Coffee Report 1990.*
Katz, S.N. (1987) Decaffeination of Coffee, Chapter 3 in Coffee Vol. 2, Technology, (eds. R.J. Clarke and R. Macrae, Elsevier, London.
Patel, J.M. and Wolfson, A.B. (1972) Semi-continuous countercurrent decaffeination processes, US Patent No. 3, 671, 263.
Patel, J.M., Wolfson, A.B. and Lawrence, B. (1972) Decaffeination Process, U.S. Patent No. 3, 671, 263.
Norris, F.A. (1982) Extraction of Fats and Oils, Chapter 3 in Bailey’s Industrial Oil and Fat ProductsVol. 2, 4th edn, (ed. D. Swem), Wiley, New York.
Berry, N.E. and Walters, R.H. (1943) Process of decaffeinating coffee, U.S. Patent No. 2,309,092.
Nutting, L. and Chong, G.S. (1968) Continuous process for producing decaffeinated beverage extract, U.S. Patent No. 3, 361, 571.
Korner, J-P. (1984) Supercritical gas extraction, Food Engineering International, November Issue, 40.
Sims, M. (1990) Decaffeinating with carbon dioxide, Tea and Coffee Trade Journal, September Issue, 8–10.
Zosel, K. (1964) Belgium Patent No. 646641.
Zosel, K. (1965) Studiengesellschaft Kohle, Chemical Abstracts, 63, 110456.
Zosel, K. (1976) U.S. Patent 3,969, 196.
Zosel, K. (1974) U.S. Patent 3,806, 619.
Zosel, K. (1980) Separation with supercritical gases; practical applications, Chapter in Extraction with Supercritical Gases (ed. Verlag Chemie, Weinheim.
Zosel, K. (1981) U.S. Patent 4,247, 570.
Prasad, R., Gottesman, M. and Scarella, R.A. (1981) U.S. Patent 4,246,291.
McHugh, M. and Krukonis, V. (1986) Supercritical Fluid Extraction, Butterworths, Boston, p. 343.
Margolis, G. and Chiovini, J. (1981) US Patent 4, 251, 559.
Lack, E., Seidlitz, H. and Toro, P. (1989) Proceedings of 13th ASIC Conference held at Paipa, Columbia, in August.
Lack, E. and Seidlitz, H. (1990). Findings and experience acquired in operating industrial high pressure extraction plants with supercritical CO2, in Second International Symposium on High Pressure Chemical Engineering (Erlangen, September 1990), organisers Dechema (Frankfurt) and GVC (Dusseldorf), abstract Handbook pp. 473–480.
Hubert, P. and Vitzthum, O. (1978) German Patent Specification DE 2637197 C2.
Vitzthum, O. and Hubert, P. (1975) US Patent 3, 879, 569.
Peter, S. (1979) German Patent Application 2737793.
Peter, S. and Brunner, G. (1982) US Patent 4, 322, 445.
Roselius, L., Kurzhals, H.A. and Hubert, P. (1981) US Patent 4, 255, 458.
Katz, S.N. and Gottesman, M. (1981) US Patent 4, 276, 315.
McHugh, M. and Krukonis, V. (1986) Supercritical Fluid Extraction, Butterworths, Boston, p. 357.
Roselius, W, Vitzthum, O. and Hubert, P. (1971) German Patent Specification DE 2119678.
Roselius, W. Vitzthum, O. and Hubert, P. (1974) U.S. Patent 3, 843, 824.
Gehring, Vitzthum, O. and Wiengas (1984) German Patent Specification DE 3303679 C2.
Vitzthum, O. and Hubert, P. (1973) German Patent Specification DE 2127642. (See also U.S. Patent 4,167,589.)
Klima, Schutz, and Vollbrecht, (1990) European Patent Specification 0200150.
Clarke, R.J. (1988) Patenting of Inventions, Chapter 7 in Coffee, Vol. 6 Commercial and Technico-Legal Aspects, (eds. R.J. Clarke and R. Macrae), Elsevier, London, pp.
McHugh, M. and Krukonis, V. (1986) Supercritical Fluid Extraction, Butterworths, Boston, pp. 182–185.
Meyer, J.F., Roselius, L. and Wimmer, K.H. (1908) US Patent 897, 763.
Zogg, M., Inhomogens Fliessbett, in Einfuhrung in die Mechanische Verfohrenstechnitz,Teabner, Stuttgart, pp.
Saamer, P., Hiltowsky, J. and Dierkes, H. (1984) Chemie Technik, 13 (9), 152–159.
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Lack, E., Seidlitz, H. (1993). Commercial scale decaffeination of coffee and tea using supercritical CO2 . In: King, M.B., Bott, T.R. (eds) Extraction of Natural Products Using Near-Critical Solvents. Springer, Dordrecht. https://doi.org/10.1007/978-94-011-2138-5_5
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DOI: https://doi.org/10.1007/978-94-011-2138-5_5
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