A Simple and Effective Method to Extract Chitosan from Crustacean Shell Waste

A modified method to extract chitosan from crustacean shell waste is presented. Separate steps for deproteinization, decolorization, and deacetylation were replaced with single-step steeping in an alkali solution for 24 h. This method resulted in 33.26%, 11.39%, and 10.15% of chitosan yield, respect...

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Bibliographic Details
Published in:Journal of aquatic food product technology 2023-04, Vol.32 (4), p.396-415
Main Authors: Liyanage, C. S., Gonapinuwala, S. T., Fernando, C. A. N., de Croos, M. D. S. T.
Format: Article
Language:English
Subjects:
Aquatic crustaceans
Chitosan
Colour
commercial shellfish waste
Crustaceans
Deacetylation
Decoloring
Decolorization
Deproteinization
Energy conservation
extraction
Freshwater
Freshwater crustaceans
Inland water environment
Marine crustaceans
modified method
Physicochemical processes
Physicochemical properties
Prawns
Viscosity
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Summary:A modified method to extract chitosan from crustacean shell waste is presented. Separate steps for deproteinization, decolorization, and deacetylation were replaced with single-step steeping in an alkali solution for 24 h. This method resulted in 33.26%, 11.39%, and 10.15% of chitosan yield, respectively from whiteleg shrimp, blueswimming crab and giant freshwater prawns whilepreserving physicochemical properties, which was evident by FTIR, XRD, SEM, EDS, ash, viscosity, colour, and antioxidant values. A comparison with the conventional heating method shows 8.10% chemical and 13% energy savings and comparative simplicity of the modified method showing potential to be executed at the industrial level.
ISSN:1049-8850
1547-0636
DOI:10.1080/10498850.2023.2228793