On-site monitoring of the degree of deacetylation for the production of chitosan using near-infrared spectroscopy;

Preparation and characterization of chitosans of high degree of deacetylation with different molecular weights;

Research of common indicator of degree of deacetylation of chitosan by alkalimetry

The determination of the degree of deacetylation of chitosan by linear potentiometric titration was studied, and the determined values were compared with the values determined by acid-base titration.

The paper discussed a method of determination of chitosan and the degree of deacetylation.

Research on the degree of deacetylation (D.D) of chitosan

Influence of reaction temperature, time, NaOH content and pre-marination on deacetylation in the preparation of chitosan from chitin is studied.

By comparing with the traditional method, it has saved money and protected environment The best process was got by SAS That is, when papain acted on the materials, the best proportion was water:papain=16:1,pH is 7 0, under the condition of 55℃,14?000?IU/g, for 5 hours Deacetylation was achieved by 46% NaOH at 110℃ for 2 hours By determinating deacetylation degree and viscosity, the most importa.

Determination of deacetylation degree in chitosan by ~1H-NMR;

Effect of different deacetylation degree and different sources of chitosan on the adsorptivity for Cu~(2+);

Comparison of two chitosan deacetylation degree determination

Studies on degree of deacetylation of chitosan and its residual amount left over in clarified products when used as a clarificant;

According to D-approximate design experimental method,we have proposed the technological condition for preparation of protein_containing with the degree of deacetylation of chitosan as the main property index.

The concentration of NaOH influences the degree of deacetylation of chitosan to much high extent according to D approximate design experimental method.