The production of fully deacetylated chitosan by compression method
- He, Xiaofei
- Li, Kecheng
- Xing, Ronge
- Liu, Song
- Hu, Linfeng
- Li, Pengcheng
Publication date
March 2016
DOI Publisher
National Institute of Oceanography and Fisheries. Production and hosting by Elsevier B.V.Abstract
AbstractChitosan’s activities are significantly affected by degree of deacetylation (DDA), while fully deacetylated chitosan is difficult to produce in a large scale. Therefore, this paper introduces a compression method for preparing 100% deacetylated chitosan with less environmental pollution. The product is characterized by XRD, FT-IR, UV and HPLC. The 100% fully deacetylated chitosan is produced in low-concentration alkali and high-pressure conditions, which only requires 15% alkali solution and 1:10 chitosan powder to NaOH solution ratio under 0.11–0.12MPa for 120min. When the alkali concentration varied from 5% to 15%, the chitosan with ultra-high DDA value (up to 95%) is produced
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