Sugar – starch – and carbohydrates – Products – Miscellaneous
Reexamination Certificate
2007-03-27
2007-03-27
Drodge, Joseph (Department: 1723)
Sugar, starch, and carbohydrates
Products
Miscellaneous
C127S034000, C210S634000, C210S639000, C210S774000, C514S062000, C536S055200, C536S055300, C536S124000, C536S127000, C536S128000
Reexamination Certificate
active
11100379
ABSTRACT:
The present invention herein provides a chitosan-containing polysaccharide and a method for the preparation thereof as well as a medicine and a food containing the polysaccharide.The chitosan-containing polysaccharide is prepared by a method comprising the steps of heat-treating a fungus in a concentrated aqueous caustic alkali solution; subjecting the resulting solution to a solid-liquid separation treatment; dissolving the resulting solid contents in an aqueous organic acid solution; adding, to the resulting solution, an alcohol or a caustic alkali to thus form precipitates; washing the resulting precipitates; and then drying them. This chitosan-containing polysaccharide is a compound in which homopolymers of glucosamine are linked with glucan through covalent bonds; it has a molar ratio of glucosamine and glucose constituting the polysaccharide ranging from 1:5 to 5:1; it has a molecular weight of about 150,000; and it does not contain any β(1→3) bonds, but comprises β(1→4) bonds and β(1→6) bonds. The polysaccharide is free of any protein and reducing polysaccharide. The chitosan-containing polysaccharide is effective for the treatment or prevention of any diseases originated from living habits or customs such as hypertension and diabetes.
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Hamaya Tadao
Kurihara Shoichi
Okazaki Hideo
Drodge Joseph
Ricom Corporation
Sughrue & Mion, PLLC
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