Sugar – starch – and carbohydrates – Processes – Carbohydrate manufacture and refining
Patent
1987-01-20
1988-11-22
Sneed, Helen M. S.
Sugar, starch, and carbohydrates
Processes
Carbohydrate manufacture and refining
127 55, 127 48, 426658, 549476, 536127, C13D 300, C13D 312, C13K 1100
Patent
active
047857943
ABSTRACT:
A method for processing aqueous sugar juice containing a mixture of aldehyde-function saccharides and ketonic-function saccharides for separating and selecting ketonic-function saccharides, comprising (a) producing a hydro-organic medium by mixing the juice with an active methylene ketonic compound, a calcium-based catalyst and preferably ethanol, (b) mixing the medium until furanic polyalcohol is formed by condensation of the ketonic compound and the aldehyde-function saccharides and (c) allowing the furanic polyalcohol to precipitate and separating it by physical means from the liquid medium.
REFERENCES:
patent: 3290263 (1966-12-01), Smythe et al.
patent: 3533839 (1970-10-01), Hara et al.
patent: 4663449 (1987-05-01), Barker et al.
Chemical Abstracts, vol. 67, No. 108947m; 1967.
"Preparation of Furan Derivatives From Pentoses And Hexoses"; 1982; J. S. Ballesteros et al; Bull. Chim. Fr., pp. 176-180.
"Reactions of Monosaccharides With Beta-Ketonic Esters"; 1956; pp. 98-141; F. G. Gonzalez, Adv. Carbohydr. Chim.
Borredon Marie E.
Delmas Michel
Gaset Antoine
Jo Louis F.
Dutton, Jr. Harold H.
Institut National Polytechnique de Toulouse
Pak Chung K.
Sneed Helen M. S.
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