Method for entrapment of active materials in chitosan

Details Method for entrapment of active materials in chitosan Method for entrapment of active materials in chitosan

C - Chemistry, Metallurgy

12

N

C12N 11/10 (2006.01) A01N 25/26 (2006.01) A61K 9/16 (2006.01) A61K 9/62 (2006.01) C12N 11/04 (2006.01)

Patent

CA 2082352

A B S T R A C T Encapsulation of active materials in chitosan beads of uniform size and improved mechanical and chemical stability. The active material is suspended in an acidic aqueous solution of a chitosan having a molecular weight of less than 250,000, the suspension is added dropwise to a cross- linking solution of diphosphate and glyoxal hydrated and the resulting beads are cured. It is possible to coat the active material with oil prior to suspension.

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