Method for producing water-insoluble polysaccharides
AssigneeIndustrial Technology Research Institute
InventorsJean-Dean Yang, Shiao-Wen Tsai, Jui-Hsiang Chen, Chiung-Lin Yang, Yu-Lin Hsieh
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Abstract
This invention is concerned with a method for producing water-insoluble polysaccharides. A method for making the water-insoluble bio-compatible gel includes activating the hydroxyl-containing polysaccharides with the activating agent to form activated polysaccharides, and cross-linking the activated polysaccharides, under moderate conditions producing different shapes of the water-insoluble bio-compatible gel. The water-insoluble bio-compatible gels, films, porosities, powders, sheets, fibers and spheres of this invention may be applied to various medical and cosmetic uses.
Claims68
A method for preparing water-insoluble polysaccharides, comprising the steps of:
- (a) preparing a water solution of hydroxyl-containing polysaccharides;
- (b) adjusting a pH of the water solution of hydroxyl-containing polysaccharides to 2.5˜7.5;
- (c) cross-linking the water solution of hydroxyl-containing polysaccharides by adding a poly-functional epoxy compound thereto, thereby forming a solution of cross-linked polysaccharides;
- and
- (d) shaping the solution of cross-linked polysaccharides into a water-insoluble polysaccharide.
A method for preparing water-insoluble polysaccharides, comprising the steps of:
- (a) preparing an organic solvent/water solution which contains an epoxy compound;
- (b) adjusting a pH of the organic solvent/water solution to 2.5˜7.5;
- (c) adding shaped hydroxyl-containing polysaccharides into the pH-adjusted organic solvent/water solution;
- and
- (d) cross-linking the shaped hydroxyl-containing polysaccharides to form water-insoluble polysaccharides.
Dependencies are inferred from the claim text.