Chitosan-based hydrogels: From preparation to applications, a review

Area of Science:

• Biomaterials Science
• Polymer Chemistry
• Food Science and Technology

Background:

• Chitosan, a biopolymer from chitin, possesses unique structural and biological properties.
• Its reactive amino and hydroxyl groups are key for synthesizing 3D hydrogels.
• Chitosan hydrogels have established uses in medical, pharmaceutical, and environmental sectors.

Purpose of the Study:

• To review recent chitosan hydrogel preparation methods.
• To systematically introduce their biological activities.
• To discuss advancements in food sensors, packaging, dye adsorbents, and nutrient carriers.

Main Methods:

• Literature review of recent developments in chitosan hydrogel synthesis.
• Systematic compilation of biological activities of chitosan hydrogels.
• Analysis of recent applications in food industry and environmental fields.

Main Results:

• Recent methods for chitosan hydrogel preparation are presented.
• Biological activities of chitosan hydrogels are comprehensively introduced.
• Progress in food sensors, packaging, dye adsorbents, and nutrient carriers is discussed.

Conclusions:

• Chitosan hydrogels show significant potential in food applications and beyond.
• Further research is needed to address challenges and unlock future development.
• Continued innovation in chitosan hydrogel technology is expected.