A MANUFACTURING METHOD OF WATER SOLUBLE CHITOSAN

A method for preparing water-soluble chitosan is provided to keep the molecular weight of a starting chitosan intact by using a mixed solvent of organic solvent/water and adding a certain amount of an acid and reduce a total production cost owing to the simple drying step. The method for preparing w...

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Bibliographische Detailangaben
1. Verfasser:	CHO, SUK HYEONG
Format:	Patent
Sprache:	eng
Schlagworte:	CHEMISTRY COMPOSITIONS BASED THEREON DERIVATIVES THEREOF HUMAN NECESSITIES HYGIENE MEDICAL OR VETERINARY SCIENCE METALLURGY ORGANIC MACROMOLECULAR COMPOUNDS POLYSACCHARIDES PREPARATIONS FOR MEDICAL, DENTAL, OR TOILET PURPOSES THEIR PREPARATION OR CHEMICAL WORKING-UP
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Beschreibung
Zusammenfassung:	A method for preparing water-soluble chitosan is provided to keep the molecular weight of a starting chitosan intact by using a mixed solvent of organic solvent/water and adding a certain amount of an acid and reduce a total production cost owing to the simple drying step. The method for preparing water-soluble chitosan comprises a step of dispersing water-insoluble chitosan in a mixed solution of water/organic solvent, a step of adding 0.5-2moles, based on a glucose amine unit, of an acid to the solution and reacting the chitosan immersed in the resultant solution for 0.5-5hours, and a step of washing the obtained water-soluble chitosan with organic solvent and filtrating and drying the water-soluble chitosan, whereby the chitosan is neither hydrolyzed nor reduced in molecular weight.