Can we make Chitosan by Enzymatic Deacetylation of Chitin?

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Abstract

Chitin, an insoluble linear polymer of β-1,4-N-acetyl-d-glucosamine (GlcNAc; A), can be converted to chitosan, a soluble heteropolymer of GlcNAc and d-glucosamine (GlcN; D) residues, by partial deacetylation. In nature, deacetylation of chitin is catalyzed by enzymes called chitin deacetylases (CDA) and it has been proposed that CDAs could be used to produce chitosan. In this work, we show that CDAs can remove up to approximately 10% of N-acetyl groups from two different (α and β) chitin nanofibers, but cannot produce chitosan.

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Harmsen, R. A. G., Tuveng, T. R., Antonsen, S. G., Eijsink, V. G. H., & Sørlie, M. (2019). Can we make Chitosan by Enzymatic Deacetylation of Chitin? Molecules, 24(21). https://doi.org/10.3390/molecules24213862

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