Sugar – starch – and carbohydrates – Processes – Carbohydrate manufacture and refining
Patent
1982-11-29
1984-08-07
Schor, Kenneth M.
Sugar, starch, and carbohydrates
Processes
Carbohydrate manufacture and refining
127 42, 127 461, 127 462, 536 41, 536 186, 536124, 536127, C07H 106, C13D 314, C13K 1100
Patent
active
044642040
ABSTRACT:
Aqueous fructose and aldehydes, ketones and/or acetals may be effectively catalyzed into alkylidene fructose derivatives with immobilized acid catalysts. The reaction provides a means for enriching the fructose content of conventional high fructose corn syrups. Perfluorinated acid resins are especially effective catalysts for converting aqueous fructose and acetone solutions into diacetone fructose. Catalysis with the perfluorinated acid resins may be conducted at significantly lower conversion temperatures with superior reactant and reaction product exchange rates. Enrichment of high fructose corn syrups may be generally accomplished by catalyzing the fructose and acetone into a diacetone fructose solution with the perfluorinated acid resin, allowing the dextrose to precipitate from the diacetone solution, hydrolyzing the diacetone fructose to fructose and recovery of the enriched fructose product therefrom. The water-insoluble catalysts afford a reusable catalyst system which can be easily separated from the processed products. The perfluorinated acid resins produce a high quality, food-grade syrup products essentially free of ash, organoleptic bodies (e.g. flavoring, coloring, etc.) and other objectionable by-product contaminants.
REFERENCES:
patent: 2715121 (1955-08-01), Glen et al.
patent: 2813810 (1957-11-01), Smith et al.
patent: 2857374 (1958-10-01), Baird
patent: 3607862 (1971-09-01), Jaffe et al.
patent: 3622560 (1971-11-01), Hindley et al.
Studies on Glycosides and Isopropylidene Derivatives--Kurt Erne Acta Chemica Scandinavica 9 (1955), 893-901.
Electrolytic Cell Membrane Development Surges--Stephen C. Stinson, C&EN, Mar. 15, 1982, pp. 22-25.
Niekamp Carl W.
Seidman Martin
A. E. Staley Manufacturing Company
Bateman Philip L.
Collins Forrest L.
Hendrickson M. Paul
Schor Kenneth M.
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