Document Detail

Crystalline structure and thermal property characterization of chitin from Antarctic krill (Euphausia superba).
MedLine Citation:
PMID:  23218270     Owner:  NLM     Status:  In-Data-Review    
Antarctic krill (Euphausia superba) has been widely studied and extensively recognized as a target for commercial fishing. In this study, Antarctic krill chitin was extracted from defatted Antarctic krill shell, and its crystalline structure and thermal properties were characterized by employing Fourier transform infrared spectroscopy, X-ray diffractometry, scanning electron microscopy, thermogravimetry, and differential scanning calorimetry. Results showed that Antarctic krill chitin corresponded to the α-polymorph, and was composed of small, stable, and uniform microcrystals. The degree of N-deacetylation was 11.28±0.86%. The d-spacings of Antarctic krill chitin were 9.78Å and 4.63Å at (020) and (110) planes. The crystalline sizes were 6.07nm and 5.16nm at (020) and (110) planes, respectively. The activation energy of the polysaccharide chain decomposition was 123.35kJ/mol and the glass transition (T(g)) of Antarctic krill chitin was 164.96°C.
Yanchao Wang; Yaoguang Chang; Long Yu; Cuiyu Zhang; Xiaoqi Xu; Yong Xue; Zhaojie Li; Changhu Xue
Publication Detail:
Type:  Journal Article     Date:  2012-10-06
Journal Detail:
Title:  Carbohydrate polymers     Volume:  92     ISSN:  1879-1344     ISO Abbreviation:  Carbohydr Polym     Publication Date:  2013 Jan 
Date Detail:
Created Date:  2012-12-10     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  8307156     Medline TA:  Carbohydr Polym     Country:  England    
Other Details:
Languages:  eng     Pagination:  90-7     Citation Subset:  IM    
Copyright Information:
Copyright © 2012 Elsevier Ltd. All rights reserved.
College of Food Science and Engineering, Ocean University of China, Qingdao 266003, China.
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