Optimized chitosan reacetylation
Method for the preparation of chitosan with a high degree of acetylation The present invention relates to a method for the preparation of chitosan of a degree of acetylation DA r , from chitosan f3 having a degree of acetylation DA; lower than DA r , comprising at least one step of purification and...
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| Format: | Patent |
| Sprache: | eng |
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| Zusammenfassung: | Method for the preparation of chitosan with a high degree of acetylation The present invention relates to a method for the preparation of chitosan of a degree of acetylation DA r , from chitosan f3 having a degree of acetylation DA; lower than DA r , comprising at least one step of purification and at least one step of acetylation of said chitosan ², said purification step comprising at least one step of solubilization of said chitosan f3 in an acidic aqueous medium and at least one step of precipitation of said thus solubilized chitosan,
wherein said acetylation step is carried out in a solution on said solubilized chitosan before said precipitation step and said precipitation step including a viral deactivation step. |
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