JPS5512137A - Preparation of chitosan - Google Patents

Preparation of chitosan

Info

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
Application number
JP8445778A
Other languages
Japanese (ja)
Other versions
JPS5634201B2 (en
Inventor
Seiichi Mima
Masaru Miya
Susumu Yoshikawa
Reikichi Iwamoto
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
National Institute of Advanced Industrial Science and Technology AIST
Original Assignee
Agency of Industrial Science and Technology
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Agency of Industrial Science and Technology filed Critical Agency of Industrial Science and Technology
Priority to JP8445778A priority Critical patent/JPS5512137A/en
Publication of JPS5512137A publication Critical patent/JPS5512137A/en
Publication of JPS5634201B2 publication Critical patent/JPS5634201B2/ja
Granted legal-status Critical Current

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
JP8445778A 1978-07-10 1978-07-10 Preparation of chitosan Granted JPS5512137A (en)

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)

* Cited by examiner, † Cited by third party
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

Patent Citations (1)

* Cited by examiner, † Cited by third party
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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