Organic compounds -- part of the class 532-570 series – Organic compounds – Carbohydrates or derivatives
Patent
1993-07-14
1995-01-03
Wityshyn, Michael G.
Organic compounds -- part of the class 532-570 series
Organic compounds
Carbohydrates or derivatives
536119, 536124, 536115, 536116, 536120, 560 84, 560 85, C07H 1700, C07H 1302, C07H 1100, C07H 1504
Patent
active
053788346
ABSTRACT:
The invention relates to a process for purifying crude products containing esters of a non-reducing sugar like sucrose, and one or more fatty acids such as palmitic acid, stearic acid etc. by subjecting the crude esterification products to an extraction treatment with supercritical carbon dioxide. After carrying out this extraction treatment a residue comprising the fatty acid esters of non-reducing sugars, the unreacted sugar and the salts as well as an extract comprising the fatty acids, fatty acid alkyl esters and also any solvents, if present, are obtained. The unreacted sugar and the salts, present in the obtained residue, can be removed from the residue by, for example, a washing operation resulting in a final product of pure esters of the non-reducing sugar and one or more fatty acids. This last removal step concerning the unreacted sugar and salts may also be carried out before the application of the above indicated extraction treatment with supercritical carbon dioxide.
REFERENCES:
patent: 4377686 (1983-03-01), Feuge et al.
patent: 4601856 (1986-07-01), Suzuki et al.
patent: 4675132 (1987-06-01), Stout et al.
patent: 4778881 (1988-10-01), Nieuwenhuis et al.
patent: 4973681 (1990-11-01), Watanabe
patent: 4973682 (1990-11-01), Willemse
patent: 5001224 (1991-03-01), Barstow et al.
Ullmanns' Enclyclopedie der Technischen Chemie, Band 24, p. 753 (1983) 4th Edition.
Kirk-Othmer Encyclopedia of Chemical Technology, 3.Ed. Supp vol, pp. 872-883 (1984).
Analytical Chemistry, vol. 57, 1985, pp. 2243-2247, entitled "Separation of Sucrose Polyesters by Capillary Supercritical-Fluid Chromatography/Flame Ionization Detection with Robot-Pulled Capillary Restrictors", by T. L. Chester et al.
Bakker Age
Koerts Kees
Vianen Gerardus M.
Cooperatieve Vereniging Suiker Unie U.A.
Leary Louise N.
Wityshyn Michael G.
LandOfFree
Process for purifying products containing esters of a non-reduci 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 purifying products containing esters of a non-reduci, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Process for purifying products containing esters of a non-reduci will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2212557