Hydrogel-Forming Algae Polysaccharides: From Seaweed to Biomedical Applications

Area of Science:

• Biomaterials Science
• Marine Biotechnology
• Polymer Chemistry

Background:

• The algae industry is expanding, necessitating high-value applications for extracted biopolymers.
• Algae-derived polysaccharides have historical biomedical uses, but challenges remain in their advanced applications.
• Bridging the gap requires a comprehensive understanding of polysaccharides from cultivation to biomedical integration.

Purpose of the Study:

• To provide an overview of algae polysaccharides that form hydrogels for biomedical applications.
• To classify these polysaccharides based on their gelation mechanisms.
• To explore strategies for optimizing their use in the biomedical field.

Main Methods:

• Reviewing literature on algae culture and polysaccharide extraction techniques.
• Analyzing structure-property relationships and chemical modification strategies.
• Discussing characterization methods for polysaccharide hydrogels and their biological interactions.

Main Results:

• Identified key hydrogel-forming algae polysaccharides: alginate, carrageenan, ulvan, starch, agarose, porphyran, and (nano)cellulose.
• Classified these polysaccharides by their distinct gelation mechanisms.
• Highlighted advances in chemical modifications for tuning polysaccharide properties.

Conclusions:

• Further utilization of algae hydrogel-forming polysaccharides can revolutionize the algae industry.
• Optimized extraction, modification, and characterization are crucial for advanced biomedical applications.
• Understanding soft matter-biomaterial interactions is key to unlocking their full potential.