Abstract
Following harvesting, green coffee is prepared from the cherries (or berries) of the coffee tree by a relatively complex series of process steps carried out entirely within the producing countries. Technically, the basic problem to be overcome is to take out the coffee seeds from within the cherry, by removing the various covering layers (see Figure 10.1) in the most efficacious manner; and to provide the coffee as far as possible as marketable green coffee beans, with a moisture content of less than 12–13 per cent. Two main processes have been used for many years, if not centuries, traditionally distinguished as the dry process and the wet process, which differ fundamentally in their approach. Apart from differentiation by species and geographical origin, green coffee prepared by these processes is known as either dry process (‘natural’) or wet process (‘washed’) coffee. In addition, certain cleaning and polishing processes may be additionally adopted, together with various grading and sorting techniques to provide the finished coffees by specification for export.
Access this chapter
Tax calculation will be finalised at checkout
Purchases are for personal use only
Preview
Unable to display preview. Download preview PDF.
References
Amorim, H.V. (1975) ‘Relationship between some organic compounds of Brazilian green coffee with the quality of the beverage’ in 6th International Colloquium on the Chemistry of Coffee, ASIC. Paris, pp. 113–23
Braham, J.E. and Bresani, R. (1979) Coffee Pulp, International Development Research Centre, Ottawa, Canada
British Standards Institution (1980–83) Green coffee — Methods of Test. Parts 1–5, B S 5752
Carter, H.W. (1980) ‘Coffee sorting with UV excitation’ in 9th International Colloquium on the Chemistry of Coffee, ASIC. Paris, pp. 219–26
Chassevent, F., Vincent, J.C., Hahn, D., Pougneaud, S. and Wilbaux, R. (1969) ‘Study of the relationships, gustatory and chemical as a function of the preparation of Robusta coffee at the first stage’ (in French) in 4th International Colloquium on the Chemistry of Coffee, ASIC. Paris, pp. 179–85
Clarke, R.J. (1972) ‘Grading Green Coffee’, Process Biochemistry, October, pp. 18–20
Clarke, R.J. (1976) ‘Food engineering and coffee’, Chemistry and Industry, pp. 362–5
Ehlers, G.M. (1980) ‘Possible applications of enzymes in coffee processing’, in 9th International Colloquium on the Chemistry of Coffee, ASIC. Paris, pp. 267–72
Foote, H.E. and Sivetz, M. (1963) Coffee Technology, Volume 1, AVI, Westport, Connecticut, USA
Gibson, A. (1971) ‘Photochemical aspects of the drying of East African coffees’, in 5th International Colloquium on the Chemistry of Coffee, ASIC. Paris, pp.246–58
Gibson, A. and Butty, M. (1975) ‘Overfermented coffee beans’, in 7th International Colloquium on the Chemistry of Coffee, ASIC. Paris, pp. 141–52
Haarer, A.E. (1962) Modern Coffee Production, 2nd ed, Leonard Hill, London
Illy, E., Brumen, G., Mastro-pasqua, L. and Maughan, W. (1982) ‘Study on the characteristics and industrial sorting of defective beans’, in 10th International Colloquium on the Chemistry of Coffee, ASIC. Paris, pp. 219–26
International Standard No. 4650 (1980) Green coffee. Methods of Test — Manual Sieving. (BS 5752 Part 5, 1981)
Jobin, P. (1982) The Coffees Produced Throughout the World, (4th edn.), P. Jobin, Le Havre
Jouanjan, F. (1980) ‘Maritime transport of coffee in containers’ (in French) in, 9th International Colloquium on the Chemistry of Coffee, ASIC. Paris, pp. 177–88
Kulaba, G.W. (1979) ‘Coffee processing research; a review’, Kenya Coffee, 44, 23–34
Maughan, W.S., Milo, S. and Roarzish (1980) ‘Instrumentation system for the analysis of coffee beans’, in 9th International Colloquium on the Chemistry of Coffee, ASIC. Paris, pp. 201–10
Milo, S. (1980) ‘Pattern recognition in sorting green coffee’, in 9th International Colloquium on the Chemistry of Coffee, ASIC. Paris, pp. 211–18
Northmore, J.M. (1967) ‘Raw bean colours and the quality of Kenya Arabica coffee’, in 3rd International Colloquium on the Chemistry of Coffee, ASIC. Paris, pp. 405–14
Richard, M. (1977) ‘Progress in the treatment and storage of green coffee’ (in French) in 8th International Colloquium on the Chemistry of Coffee, ASIC. Paris, pp. 187–96
Rolz, G, Menchu, J.F. and Arimany, E. (1969) ‘The fluidized bed drying of coffee’ in 4th International Colloquium on the Chemistry of Coffee, ASIC, Paris, pp. 166–73
Sivetz, M. and Desrosier, N.W. (1979). Coffee Technology, AVI, Westport, Connecticut, USA
Stirling, M. (1980) ‘Storage research on Kenya Arabica coffee’, in 9th International Colloquium on the Chemistry of Coffee, ASIC. Paris, pp. 189–200.
Teixeira, A.A. (1982) ‘Effect of temperature in drying in relation to defects in coffee’ (in Portuguese) in 10th International Colloquium on the Chemistry of Coffee, ASIC. Paris, pp. 73–80
Various (1983) ‘Containerisation of green coffee’, Coffee International, 5, 13
Vincent, J.C., Guenot, M.C., Perriott, J.J., Hahn, H. and Guele, D. (1977) ‘The influence of different technical treatments on the chemical and organoleptic characteristics of Robusta and Arabusta coffee’ (in French) in 8th International Colloquium on the Chemistry of Coffee, ASIC. Paris, pp. 271–84
Watson, A.G. (1980) ‘The mechanisation of coffee production’, in 9th International Colloquium on the Chemistry of Coffee, ASIC. Paris, pp. 681–6
Wilbaux, R. (1952) The Treatment of Coffee’ (in French), FAO, Rome
Wootton, A.E. (1965) The importance of field processing to the quality of East African coffee’, in 2nd International Colloquium on the Chemistry of Coffee, ASIC. Paris, pp. 247–58
Wootton, A.E. (1967a) ‘A report by the working group on the wet processing of coffee’, in 3rd International colloquium on the Chemistry of Coffee, ASIC. Paris, pp. 398–404
Wootton, A.E. (1967b) ‘A comparison on the methods of measurement of moisture content in parchment and green coffee’, in 3rd International Colloquium on the Chemistry of Coffee, ASIC. Paris, pp. 92–100
Wootton, A.E. (1971) The dry matter loss from parchment and green coffee’, in 5th International Colloquium on the Chemistry of Coffee, ASIC. Paris, pp. 316–24
Editor information
Rights and permissions
Copyright information
© 1985 M.N. Clifford and K.C. Willson
About this chapter
Cite this chapter
Clarke, R.J. (1985). Green Coffee Processing. In: Clifford, M.N., Willson, K.C. (eds) Coffee. Springer, Boston, MA. https://doi.org/10.1007/978-1-4615-6657-1_10
Download citation
DOI: https://doi.org/10.1007/978-1-4615-6657-1_10
Publisher Name: Springer, Boston, MA
Print ISBN: 978-1-4615-6659-5
Online ISBN: 978-1-4615-6657-1
eBook Packages: Springer Book Archive