Document Detail


Alkali- or acid-induced changes in structure, moisture absorption ability and deacetylating reaction of β-chitin extracted from jumbo squid (Dosidicus gigas) pens.
MedLine Citation:
PMID:  24444948     Owner:  NLM     Status:  In-Data-Review    
Abstract/OtherAbstract:
Alkali- or acid-induced structural modifications in β-chitin from squid (Dosidicus gigas, d'Orbigny, 1835) pens and their moisture absorption ability (MAA) and deacetylating reaction were investigated and compared with α-chitin from shrimp shells. β-Chitin was converted into the α-form after 3h in 40% NaOH or 1-3h in 40% HCl solution, and α-chitin obtained from NaOH treatment had higher MAA than had native α-chitin, due to polymorphic destructions. In contrast, induced α-chitin from acid treatment of β-chitin had few polymorphic modifications, showing no significant change (P>0.05) in MAA. β-Chitin was more susceptible to alkali deacetylation than was α-chitin, and required a lower concentration of NaOH and shorter reaction time. These results demonstrate that alkali- or acid-treated β-chitin retained high susceptibility toward solvents, which in turn resulted in good biological activity of β-chitosan for use as a natural antioxidant and antimicrobial substance or application as edible coatings and films for various food applications.
Authors:
Jooyeoun Jung; Yanyun Zhao
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Publication Detail:
Type:  Journal Article     Date:  2013-12-04
Journal Detail:
Title:  Food chemistry     Volume:  152     ISSN:  0308-8146     ISO Abbreviation:  Food Chem     Publication Date:  2014 Jun 
Date Detail:
Created Date:  2014-01-21     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  7702639     Medline TA:  Food Chem     Country:  England    
Other Details:
Languages:  eng     Pagination:  355-62     Citation Subset:  IM    
Copyright Information:
Published by Elsevier Ltd.
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