Process for producing low endotoxin chitosan
AssigneeMedtrade Products Limited
InventorsCarig Hardy, Andrew Hoggarth, June Galdman
Life of this patent
Estimating the term…
Abstract
The present invention relates to a process for producing a low endotoxin alkali chitosan, chitin, chitosan derivative or chitin derivative, and also to a process for producing low endotoxin neutral chitosan, chitosan salt and chitosan derivatives, and to the products of such processes. The process comprises contacting chitosan, chitin, chitosan derivative or chitin derivative with an alkali solution to form a mixture; leaving the mixture for a period of less than 1 hour and optionally drying the mixture. The low endotoxin alkali chitosan may be used in the manufacture of other useful chitosan based products.
Claims40
A process for producing a low endotoxin alkali chitosan, chitin or a derivative thereof, the process comprising the steps of:
- (a) contacting chitosan, chitin, a chitosan derivative or a chitin derivative with an alkali solution to form a mixture;
- and
- (b) leaving the mixture for a period of less than 1 hour.
(canceled)
(canceled)
(canceled)
(canceled)
(canceled)
(canceled)
(canceled)
An alkali chitosan, chitin, a chitosan derivative or a chitin derivative, or a neutral chitosan, a chitosan salt or a chitosan derivative comprising an endotoxin concentration of less than 50 EU/g.
(canceled)
(canceled)
(canceled)
(canceled)
(canceled)
(canceled)
(canceled)
(canceled)
(canceled)
(canceled)
(canceled)
Dependencies are inferred from the claim text.