Impact of Telopeptides on Self-Assembly Properties of Snakehead (Channa argus) Skin Collagen

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• 作者：Juntao Zhang ; Meilian Zou ; Ming Zhang ; Benmei Wei ; Chengzhi Xu ; Dong Xie…
• 关键词：Fish ; sourced collagen ; Telopeptides ; Concentrations ; Rheology ; Turbidity
• 刊名：Food Biophysics
• 出版年：2016
• 出版时间：December 2016
• 年：2016
• 卷：11
• 期：4
• 页码：380-387
• 全文大小：1,091 KB
• 刊物类别：Chemistry and Materials Science
• 刊物主题：Chemistry
  Food Science
  Biophysics and Biomedical Physics
  Analytical Chemistry
  
• 出版者：Springer New York
• ISSN：1557-1866
• 卷排序：11

文摘

Much work has been done to understand the self-assembly properties of collagens from mammals. However, there is little information about fish-sourced collagens that are advantageous in certain applications. In this study, the self-assembly dynamics of tropocollagen (with telopeptides) and atelocollagen (without telopeptides) extracted from snakehead (Channa argus) skins was studied with turbidity, dynamic rheology, scanning electron microscopy (SEM), and quantitative percentage of self-assembly. Turbidity results indicate that the self-assembly of fish-sourced collagens followed the nucleation-growth two-step model, while rheological results unveiled two growth stages in the development of collagen gels. Based on SEM, telopeptides promoted the formation of thicker fibrils and increased the density of network that provided the structural basis of increased turbidity and strengthened storage and loss moduli. The SEM data were supported by the increased percentage of self-assembled collagens by telopeptides. Findings from this work may facilitate the understanding of structures and functions of products containing fish-sourced collagens and their application.