Chitosan Oligomer is high purity low molecular weight Chitosan oligosaccharide. It is soluble in dilute aqueous acid and is also reasonably soluble in water. The degree of deacetylation (DDA) is above 90%. Chitosan was prepared from crab shell.
Chitosan is produced by deacetylationÂ ofÂ chitin, which is the structuralÂ elementÂ in theÂ exoskeletonÂ ofÂ crustaceansÂ (such as crabs and shrimp) and cell walls ofÂ fungi. The degree of deacetylation (%DD) can be determined byÂ NMR spectroscopy from 60 to 100%.Chitosan products are characterized by either its MW or its viscosity.Â TheÂ aminoÂ group in chitosan has aÂ pKaÂ value of ~6.5.
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