Acid hydrolysis of polysaccharide-containing raw material

Details Acid hydrolysis of polysaccharide-containing raw material Acid hydrolysis of polysaccharide-containing raw material

1975-09-19

1977-06-14

Marantz, Sidney

Sugar, starch, and carbohydrates

Processes

Carbohydrate manufacture and refining

127 1, C13K 102, C13K 1300

Patent

active

040295150

ABSTRACT:
A continuous method for the decomposition of a raw-material that contains polysaccharides by means of acid hydrolysis. The raw-material is hydrolyzed continuously in one reactor as two steps. In the first step, the hydrolysis is run in the upper part of the reactor in a vapor phase, whereby pentosans are decomposed mainly into furfural, acetic acid, methanol, and acetone, and hexosans are decomposed into disaccharides and trisaccharides. In the second step, the hydrolysis is run in the bottom part of the reactor in a liquid phase, whereby the disaccharides and trisaccharides obtained in the first step are decomposed into monosaccharides and into saccharic and fatty acids.

REFERENCES:
patent: 1428217 (1922-09-01), Classen
patent: 1687785 (1928-10-01), Perl
patent: 1806531 (1931-05-01), Gogarten
patent: 1828982 (1931-10-01), Perl
patent: 1963972 (1934-06-01), Dreyfus
patent: 2488981 (1949-11-01), Marchiaro
patent: 3523911 (1970-08-01), Funk
patent: 3701789 (1972-10-01), Ramos-Rodriguez

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