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In the paper the thermal deactivation of chitin deacetylase separated from Absidia orchidis vel coerulea was investigated. Experiments were carried out at a temperature of 50ºC up to 24 hours. Three mechanisms of deactivation were tested: irreversible first-order, reversible firstorder, and three-parameters phenomenological model. It was found that the last one gave the best approximation of the deactivation...
The crude enzyme extract obtained from Mucor rouxii had optimal deacetylasde activity against chitosan acetylated in 39% in the Ph range of 5,2-5.9. Its activity against watger-soluble chitoologosaccharides, containing from 3 to 6 N-acetylglucosamine residues, was the higest in respect to (GlcNAc)s and nil against substrates containing less than 4 N-acetylglucosamine residues.Crystaline chitin was...
The role of chitinases, chitosanases, and chitin deacetylase in the biosynthesis and modification of chitin is presented.The biochemical properties of chitin deacetylase from Mucor rouxii are characterized in respect to its activity towards various chitin derivatives.This enzyme could be useful in biotechnological production of chitosan from chitin as an alternative method to tchermochemical deacetylation.
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