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Physicochemical properties and antioxidant activities of two fucosylated chondroitin sulfate from sea cucumber Acaudina molpadioidea and Holothuria nobilis

Paper ID Volume ID Publish Year Pages File Format Full-Text
34260 45013 2016 9 PDF Available
Title
Physicochemical properties and antioxidant activities of two fucosylated chondroitin sulfate from sea cucumber Acaudina molpadioidea and Holothuria nobilis
Abstract

•Two FucCS of sea cucumber exhibited effective antioxidant activities.•SEM and AFM images of two FucCS from sea cucumber were first determined.•Thermal, acid and alkali treatments affected the conformation variation of FucCS.

The physicochemical properties and antioxidant activities of two fucosylated chondroitin sulfate (ACP and HOP) isolated from sea cucumber Acaudina molpadioidea and Holothuria nobilis respectively were detected in this study. Their SEM and AFM images, conformation based on circular dichroism spectroscopy, specific optical rotation, intrinsic viscosity, and antioxidant activities were first determined. The SEM and AFM images demonstrated differences in the three-dimensional morphological features of the two polysaccharides. The CD results revealed the conformation variation of the two polysaccharides after thermal, acid and alkali treatments. The specific rotations of ACP and HOP were −46° and −22° respectively, and the intrinsic viscosity of ACP and HOP was 145.52 ml/g and 7.30 ml/g respectively. The antioxidant assay showed that ACP and HOP both exhibited moderate antioxidant activities against DPPH, hydroxyl, and superoxide radicals in a dose-dependent manner. Our study provides basic data for understanding the antioxidant activities of animals and exploring potential antioxidant from sea cucumber. The findings in this study also provide the basis on researching the relationship between antioxidant activities and physicochemical properties of FucCS.

Graphical abstractSEM and AFM images of two FucCS (ACP and HOP) from sea cucumber were first determined, which revealed that the aspect of stereo structures of ACP and HOP was different.Figure optionsDownload full-size imageDownload as PowerPoint slide

Keywords
Sea cucumber; Fucosylated chondroitin sulfate; SEM; AFM; Specific rotations; Intrinsic viscosity; Antioxidant activity
First Page Preview
Physicochemical properties and antioxidant activities of two fucosylated chondroitin sulfate from sea cucumber Acaudina molpadioidea and Holothuria nobilis
Publisher
Database: Elsevier - ScienceDirect
Journal: Process Biochemistry - Volume 51, Issue 5, May 2016, Pages 650–658
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Bioengineering