Food or edible material: processes – compositions – and products – Processes – Extraction utilizing liquid as extracting medium
Patent
1987-06-18
1992-02-18
Golian, Joseph
Food or edible material: processes, compositions, and products
Processes
Extraction utilizing liquid as extracting medium
426428, 426447, 426595, A23F 520
Patent
active
050892800
ABSTRACT:
A simple, reliable process for decaffeinating green coffee beans to a high degree while avoiding denaturation of the green coffee beans includes wetting the green coffee beans to a high water content of 35-50%-wt.; compressing the beans in a pressure chamber for a period of a few minutes to several hours in an atmosphere comprised of a supercritical fluid which is a gas at STP, at a temperature ranging from 20.degree. to 80.degree. C. under a critical pressure ranging from 75 to 300 bar; decompressing the wetted beans from critical pressure p.sub.c to a pressure p for which p.sub.c .ltoreq.p.ltoreq.1 bar abruptly or in the space of a few minutes, while avoiding freezing the green coffee beans; washing with water or with the supercritical fluid for selective extraction of the caffeine; repeating the process one or more times; centrifuging; drying; and roasting the beans. Further, caffeine is recovered in a known manner from the washing medium.
REFERENCES:
patent: 2278473 (1942-04-01), Musher
patent: 2309092 (1943-01-01), Berry et al.
patent: 3879569 (1975-04-01), Vitzhum et al.
patent: 4002772 (1977-01-01), Haas
patent: 4263253 (1981-04-01), Pilz et al.
patent: 4531529 (1985-07-01), White et al.
patent: 4554932 (1985-11-01), Conrad et al.
patent: 4659577 (1987-04-01), Meinhold et al.
patent: 4700726 (1987-10-01), Townsend et al.
Ben-Nasr Hedi
Coenen Friedrich W. H.
Golian Joseph
Kohlensaure-Werke Rud. Buse GmbH & Co.
LandOfFree
Process for decaffinating green coffee beans does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Process for decaffinating green coffee beans, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Process for decaffinating green coffee beans will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1821846