Structure and rheological characteristics of fucoidan from sea cucumber Apostichopus japonicus

Yu, Long, Xue, Changhu, Chang, Yaoguang, Hu, Yanfang, Xu, Xiaoqi, Ge, Lei and Liu, Guanchen (2015) Structure and rheological characteristics of fucoidan from sea cucumber Apostichopus japonicus. Food Chemistry, 180 71-76. doi:10.1016/j.foodchem.2015.02.034


Author Yu, Long
Xue, Changhu
Chang, Yaoguang
Hu, Yanfang
Xu, Xiaoqi
Ge, Lei
Liu, Guanchen
Title Structure and rheological characteristics of fucoidan from sea cucumber Apostichopus japonicus
Journal name Food Chemistry   Check publisher's open access policy
ISSN 1873-7072
0308-8146
Publication date 2015-08-01
Year available 2015
Sub-type Article (original research)
DOI 10.1016/j.foodchem.2015.02.034
Volume 180
Start page 71
End page 76
Total pages 6
Place of publication Amsterdam, Netherland
Publisher Elsevier
Collection year 2016
Language eng
Formatted abstract
Sea cucumber is a traditional health food consumed in East Asia. In this study, fucoidan from sea cucumber Apostichopus japonicus (Aj-FUC) was isolated, and its structure and rheological characteristics were elucidated for the first time. Aj-FUC was a branched polysaccharide mainly composed of a novel repeating unit [α-l-Fucp2(OSO3 -)-1 → 3,(α-l-Fucp-1 → 4-α-l-Fucp-1 →)4-α-l-Fucp2(OSO3 -)-1 → 3-α-l-Fucp2(OSO3 -)], clarified by using a combination of infrared spectroscopy, methylation analysis, enzymatic degradation and nuclear magnetic resonance. In steady shear measurement, Aj-FUC manifested a non-Newtonian shear-thinning behaviour at low shear rate (1-100 S-1) while exhibiting a non-Newtonian shear-thickening behaviour at high shear rate (100-1000 S-1); salts had limited impact on its flow curve. Comparative study on viscosity and rheological behaviour of Aj-FUC and a linear fucoidan extracted from sea cucumber Acaudina molpadioides suggested that the presence of branch structure might significantly influence the rheological characteristics of fucoidan.
Keyword Fucoidan
Sea cucumber
Apostichopus japonicus
Structure
Viscosity
Rheological behaviour
Q-Index Code C1
Q-Index Status Confirmed Code
Institutional Status UQ

Document type: Journal Article
Sub-type: Article (original research)
Collections: School of Chemical Engineering Publications
Official 2016 Collection
 
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