R. (1997). Heterogeneous N-deacetylation of chitin in alkaline solution. Carbohydrate Research, 303, 327-332.A.A. Sarhan, D.M. Ayad, D.S. Badawy, M. Monier, Phase transfer catalyzed het- erogeneous N-deacetylation of chitin in alkaline solution, React. Funct. Polym. 69 (2009) 358-...
(2013). "Kinetics of N-Deacetylation of Chitin Extracted from Shrimp Shells Collected from Coastal Area of Morocco" (PDF). medjchem.com. Mediterranean Journal of Chemistry.Ahlafi, H.; Moussout, H.; Boukhlifi, F.; Echetna, M.; Bennani, M.N.; Slimane, S.M. Kinetics of N-...
Chitin was extracted from squid pens and its heterogeneous alkaline deacetylation was performed using various conditions. The reaction followed the pseudo-first-order kinetics during an initial period. The influences of alkaline concentration, temperature, time and chitin to solution ratio on the -deacety...
Chitinase 1.Introduction Chitinisamongthemostabundantbio- polymersonearthandisalinearpolymerof N-acetyl-D-glucosamineresidues.Itisfound onthecellsurfaceoffungalcellwallsandisa componentofarthropodinteguments.Some oftheGlcNAcresiduesinchitinaredeacety- latedinitsnaturalform[1].Chitinasesare glycosylhydrolases...
Sun, L., Du, Y., Yang, J., Shi, X., Li, J., Wang, X., Kennedy, J.F.: Conversion of crystal structure of the chitin to facilitate preparation of a 6-carboxychitin with moisture absorption–retention abilities. Carbohydr. Polym. 66(2), 168–175 (2006) Article CAS Google Scholar...
2000 The N-acylation of chitosan fibre and the N-deacetylation of chitin fibre and chitin- cellulose blended fibre at a solid state. Carbohydr. Polym. 41(2), 175-179.HIRANO S,ZHANG M,CHHUNG BG,et al.The N-acylation of chitosan fibre and the N-deacety lation of chitin fibre and ...
The subject of the present invention is a process for the preparation of chitosan by N-deacetylation of chitin in hot aqueous alkaline medium according to which the reaction mixture comprises ethanol, an alkali metal hydroxide such as sodium hydroxide in an amount essentially equal to the mass of...
The subject of the present invention is a process for the preparation of chitosan by N-deacetylation of chitin in hot aqueous alkaline medium according to which the reaction mixture comprises ethanol, an alkali metal hydroxide such as sodium hydroxide in an amount essentially equal to the mass of...
CHITINVarious infrared spectroscopic techniques for the analysis of degree of N-deacetylation of chitosan were evaluated for accuracy. A new method was proposed which involved development of a calibration curve using the absorbance intensities of the chitosan infrared spectrum at 1655 and 3450 cm(-1)...
Monier, Phase transfer catalyzed heterogeneous N-deacetylation of chitin in alkaline solution, React. Funct. Polym. 69 (2009) 358-363.Phase transfer catalyzed heterogeneous N-deacetylation of chitin in alkaline solution. Sarhan,A.A,Ayad,D.M,Badawy,D.S,Monier, M. Reactive and Functional Polymers...