Publication: Heterogeneous N-deacetylation of squid chitin in alkaline solution
Issued Date
2003-05-01
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ISSN
01448617
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2-s2.0-0037404264
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Mahidol University
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SCOPUS
Bibliographic Citation
Carbohydrate Polymers. Vol.52, No.2 (2003), 119-123
Suggested Citation
Pawadee Methacanon, Malinee Prasitsilp, Thanawit Pothsree, Junya Pattaraarchachai Heterogeneous N-deacetylation of squid chitin in alkaline solution. Carbohydrate Polymers. Vol.52, No.2 (2003), 119-123. doi:10.1016/S0144-8617(02)00300-4 Retrieved from: https://repository.li.mahidol.ac.th/handle/20.500.14594/20818
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Title
Heterogeneous N-deacetylation of squid chitin in alkaline solution
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Abstract
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 N-deacetylation were investigated. The degree of deacetylation (DD) increased mainly with increasing temperature, NaOH concentration and time. The effect of the chitin to solution ratio was insignificant. In the temperature range of 40-100°C, the apparent rate constant and the activation energy of the reaction ranged from 1.0×10-3to 2.4×10-2min-1and from 5.4 to 11.9kcal/mol, respectively. The linear regression analysis was performed to predict the optimum conditions for 90% DD chitosan product. © 2003 Elsevier Science Ltd. All rights reserved.