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| Main Authors: | , , , , , |
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| Format: | Artículo científico |
| Language: | en |
| Published: |
International journal of biological macromolecules
2025
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| Subjects: | |
| Online Access: | https://pubmed.ncbi.nlm.nih.gov/40466824/ |
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Table of Contents:
- A sulfated arabinose-rich polysaccharide hydrogel from Chaetomorpha valida: preparation, properties and mechanisms. Leng, Yueyang Wang, Jing Wu, Ning Yue, Yang Geng, Lihua Zhang, Quanbin Polysaccharides Hydrogels Arabinose Sulfates Rheology Chlorophyta Biocompatible Materials Seaweed Marine polysaccharides such as alginate, agar, and carrageenan are widely used as commercially hydrocolloids for hydrogels fabrication. In this study, we report the development of a novel sulfated arabinose-rich heteropolysaccharide (CVP) hydrogel from the edible green alga Chaetomorpha valida. CVP is a high-molecular-weight polysaccharide that spontaneously forms hydrogels (CVG) at room temperature and exhibits thermal reversibility. Rheological and textural analyses confirm the viscoelastic properties of CVG, while three-interval thixotropy (3ITT) and gel fracture tests reveal remarkable structural recovery and self-healing capabilities. Congo red assays indicate the presence of a three-dimensional helical conformation, and microscopic observations suggest that gelation is driven by molecular entanglement and hydrogen bonding. Further crosslinking of CVG with sodium tetraborate produces a borate-modified hydrogel (CVBG) with enhanced mechanical strength and brittleness, tunable by borate concentration. Fourier-transform infrared (FT-IR) spectroscopy indicates that borate crosslinking occurs via boron‑oxygen bond formation. This thermally reversible, self-healing hydrogel demonstrates excellent biocompatibility and water retention, highlighting its potential for applications in food additives, preservation systems, and biomedical engineering.