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Received December 1, 2009
Accepted January 10, 2010
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Decaffeination of coffee bean waste by solid-liquid extraction
Department of Chemical Engineering, Inha University, 253 Yonghyun-dong, Nam-gu, Incheon 402-751, Korea
rowkho@inha.ac.kr
Korean Journal of Chemical Engineering, January 2011, 28(1), 221-224(4), 10.1007/s11814-010-0264-x
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Abstract
Many residues of plants are hydrolyzed to prepare polysaccharides and monosaccharide by bio-methods. Coffee bean waste is emerging as a new feed for producing these carbohydrates, but the appearance of caffeine in coffee bean waste prevents the enzymatic or bacterial hydrolysis. In this case, several solvents were used to remove the caffeine from the coffee waste as well as optimizing the conditions. Ethanol/water (50/50, v/v) at 80 ℃ was found to be the best condition for caffeine removal.
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References
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Belay A, Ture K, Redi M, Asfaw A, Food Chem., 108, 310 (2008)
Icen H, Guru M, J. Supercrit. Fluids, 50(3), 225 (2009)
Clarke RJ, In Proceedings of the 9th Coll. ASIC, 467 (1980)
Rofti J, In Proceedings of the 5th Coll. ASIC, 179 (1971)
Rosario Brunetto MR, Gutierrez L, Delgado Y, Gallignani M, Zambrano A, Gomez A, Ramos G, Romero C, Food Chem., 100, 459 (2007)
