Chemistry: molecular biology and microbiology – Micro-organism – tissue cell culture or enzyme using process... – Preparing compound containing saccharide radical
Patent
1987-03-20
1990-05-01
Wiseman, Thomas G.
Chemistry: molecular biology and microbiology
Micro-organism, tissue cell culture or enzyme using process...
Preparing compound containing saccharide radical
435 99, 435202, 435204, 435205, 106210, 127 29, 127 38, C12P 1920, C12P 1914, C12N 928, C12N 932, C12N 934, C09J 306
Patent
active
049217950
ABSTRACT:
The present invention relates to an improvement in the alpha-amylase method of hydrolyzing a heated slurry of raw starch into starch fragments, the improvement comprising adding a hydrolytically effective amount of the enzyme, glucoamylase, to the reaction slurry.
The present invention further relates to a method for the production of high solids dextrim adhesives from raw starch. In carrying out the invention, an aqueous slurry containing raw starch is subjected to hydrolysis at an elevated temperature by the action of two thermally stable enzymes, alpha-amylase and glucoamylase. Once the viscosity of the reaction slurry is reduced to 1000-2000 centipoise as determined by a Brookfield viscometer at 20 rpm, 100.degree. F., and at 45-55% solids (approximately 2.5 hrs.), the enzymes are then inactivated and the reaction is complete. The rheological properties of the resulting slurry can be adjusted as needed.
The present invention is useful because it provides a more direct and economical method for hydrolyzing starch in general, and for producing dextrin adhesives directly from raw starch for use in the high speed paper coating industry in particular.
REFERENCES:
patent: 2609326 (1952-09-01), Pigman et al.
patent: 3149049 (1964-09-01), Walkup et al.
patent: 3414467 (1968-12-01), Ferrara
patent: 3436309 (1969-04-01), Ottinger
patent: 3450549 (1969-06-01), Schwalbe
patent: 3728140 (1973-04-01), Yoshida
patent: 3922197 (1975-11-01), Leach et al.
patent: 4014743 (1977-03-01), Black
patent: 4600439 (1986-07-01), Schneider et al.
Kirk-Othmer "Encyclopedia of Chemical Technology", vol. 21, 3rd Ed., pp. 492-496.
North American Adhesive Company
Patterson Jr. Charles L.
Wiseman Thomas G.
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