Chitosan-containing polysaccharide, method for preparing the...

Sugar – starch – and carbohydrates – Products – Miscellaneous

Reexamination Certificate

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

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.

REFERENCES:
patent: 4918009 (1990-04-01), Nilsson
patent: 5905035 (1999-05-01), Okada et al.
patent: 6255085 (2001-07-01), Chen et al.
patent: 6485946 (2002-11-01), Chen et al.
patent: 6759049 (2004-07-01), Donatini
patent: 6972284 (2005-12-01), Fan et al.
patent: 7049433 (2006-05-01), Fan et al.
patent: 381055 (1990-08-01), None
patent: 976400 (2000-02-01), None
M. Noves-Ledieu et al., The cell walls ofAgaricus bisporusandAgaricus campestrisfruiting body hyphae, Canadian Journal of Microbiology, 1981, vol. 27, No. 8, pp. 779 to 787: p. 781, eight col., lines 12 to 23.
Valentina S. Gamayurova et al.; “Synthesis of Soluble Derivatives of Chitin-Glucane Complex”; Chemistry and Computational Simulation; Butlerov Communications; 1999; No. 1.
Natalia V. Shabrukova et al.; “Study of the Nature of Chitin-Glucan Bond in Chitin-Glucan Complex”; Chemistry and Computational Simulation; Butlerov Communications; 2001; No. 4.
Mariko Shida et al.; “Structure of the Alkali-Insoluble Skeletal Glucan ofLentinus edodes”; J. Biochem; vol. 90; pp. 1093-1100 (1981).
Robbert P. Hartland, et al.; “The Linkage of (1-3)-β-Glucan to Chitin During Cell Wall Assembly inSaccharomyces cerevisiae”; YEAST; vol. 10, pp. 1591-1599 (1994).

LandOfFree

Say what you really think

Search LandOfFree.com for the USA inventors and patents. Rate them and share your experience with other people.

Rating

Chitosan-containing polysaccharide, method for preparing the... does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Chitosan-containing polysaccharide, method for preparing the..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Chitosan-containing polysaccharide, method for preparing the... will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFUS-PAI-O-3745507

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.