JPS5512137A - Preparation of chitosan - Google Patents
Preparation of chitosanInfo
- Publication number
- JPS5512137A JPS5512137A JP8445778A JP8445778A JPS5512137A JP S5512137 A JPS5512137 A JP S5512137A JP 8445778 A JP8445778 A JP 8445778A JP 8445778 A JP8445778 A JP 8445778A JP S5512137 A JPS5512137 A JP S5512137A
- Authority
- JP
- Japan
- Prior art keywords
- compound
- chitosan
- chitin
- deacetylated
- solid
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Abstract
PURPOSE: To prepare chitosan without lowering the molecular weight, by deacetylating chitin to obtain a compound soluble to dilute acids, solidifying the compound, adding an alkali solution to the solid, and finally deacetylating the compound by heating.
CONSTITUTION: Chitin is deacetylated to obtain a compound soluble to dilute acids or water, and solidified to the form of fibers or powders by drying, etc. A concentrated solution of an alkali (pref. ≥45% in concentration) is added to the solid, and made to react at, e.g. 60°C for 2 hours. The deacetylated chitin is further deacetylated by this procedure to afford the objective chitosan.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP8445778A JPS5512137A (en) | 1978-07-10 | 1978-07-10 | Preparation of chitosan |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP8445778A JPS5512137A (en) | 1978-07-10 | 1978-07-10 | Preparation of chitosan |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5512137A true JPS5512137A (en) | 1980-01-28 |
JPS5634201B2 JPS5634201B2 (en) | 1981-08-08 |
Family
ID=13831147
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP8445778A Granted JPS5512137A (en) | 1978-07-10 | 1978-07-10 | Preparation of chitosan |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5512137A (en) |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS521953A (en) * | 1975-06-24 | 1977-01-08 | Sanshin Roka Kogyo | Automatically controlling method and apparatus for filtration |
-
1978
- 1978-07-10 JP JP8445778A patent/JPS5512137A/en active Granted
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS521953A (en) * | 1975-06-24 | 1977-01-08 | Sanshin Roka Kogyo | Automatically controlling method and apparatus for filtration |
Also Published As
Publication number | Publication date |
---|---|
JPS5634201B2 (en) | 1981-08-08 |
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