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Structure and characteristics of acid and pepsin-solubilized collagens from the skin of cobia (Rachycentron canadum).
MedLine Citation:
PMID:  22953947     Owner:  NLM     Status:  In-Data-Review    
Abstract/OtherAbstract:
Acid-solubilized collagen (ASC) and pepsin-solubilized collagen (PSC) were extracted from the skin of cobia (Rachycentron canadum). The yields of ASC and PSC were 35.5% and 12.3%, respectively. Based on the protein patterns and carboxymethyl-cellulose chromatography, ASC and PSC were composed of α1α2α3 heterotrimers and were characterised as type I collagen with no disulfide bond. Their amounts of imino acids were 203 and 191 residues per 1000 residues, respectively. LC-MS/MS analysis demonstrated the high sequences similarities of ASC and PSC. Fourier transform infrared spectroscopy spectra showed that the amide I, II and III peaks of PSC were obtained at a lower wave number compared with ASC. The thermal denaturation temperatures of ASC and PSC, as measured by viscometry, were 34.62 and 33.97°C, respectively. The transition temperatures (T(max)) were 38.17 and 36.03°C, respectively, as determined by differential scanning calorimetry (DSC). Both collagens were soluble at acidic pH and below 2% (w/v) NaCl concentration.
Authors:
Shaokui Zeng; Juanjuan Yin; Shuqi Yang; Chaohua Zhang; Ping Yang; Wenlong Wu
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Publication Detail:
Type:  Journal Article     Date:  2012-06-30
Journal Detail:
Title:  Food chemistry     Volume:  135     ISSN:  0308-8146     ISO Abbreviation:  Food Chem     Publication Date:  2012 Dec 
Date Detail:
Created Date:  2012-09-07     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  7702639     Medline TA:  Food Chem     Country:  England    
Other Details:
Languages:  eng     Pagination:  1975-84     Citation Subset:  IM    
Copyright Information:
Copyright © 2012 Elsevier Ltd. All rights reserved.
Affiliation:
College of Food Science & Technology, Guangdong Ocean University, Zhanjiang 524088, China; Key Laboratory of Aquatic Product Advanced Processing of Guangdong Higher Education Institutes, Zhanjiang 524088, China.
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