Sugar – starch – and carbohydrates – Processes – Carbohydrate manufacture and refining
Patent
1984-11-20
1987-05-12
Fisher, Richard V.
Sugar, starch, and carbohydrates
Processes
Carbohydrate manufacture and refining
127 38, 127 42, C13K 106, C13K 102
Patent
active
046647171
ABSTRACT:
Polysaccharides are at least partially hydrolyzed by contact with a composition containing urea, sulfuric acid, and water in which the urea/sulfuric acid molar ratio is less than 2. Such proportions of urea and sulfuric acid assure the presence of the monourea adduct of sulfuric acid. The polysaccharide can be hydrolyzed to an extent sufficient only to hydrate the polysaccharide to produce a hydrated polysaccharide such as hydrated cellulose, or it can be completely hydrolyzed to its constituent monosaccharides. Thus, cellulose can be converted to glucose.
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Fisher Richard V.
Jones W. Gary
Laird Michael H.
Sandford Dean
Union Oil Company of California
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