Chitooligosaccharides and their biological activities: A comprehensive review

Area of Science:

• Biochemistry
• Polymer Science
• Biotechnology

Background:

• Chitin and chitosan are abundant natural polysaccharides with limited applications due to poor water solubility.
• Chitooligosaccharides (COS) are low molecular weight, water-soluble derivatives offering superior properties.
• COS possess a wide array of biological activities and industrial potential.

Purpose of the Study:

• To review the latest research on the biological activities of chitooligosaccharides (COS).
• To elucidate the molecular mechanisms underlying COS bioactivities in relation to their physicochemical properties.
• To report on commercially available COS products and their potential applications.

Main Methods:

• Literature review of recent studies on COS biological activities and mechanisms.
• Analysis of the correlation between COS physicochemical properties and their bioactivities.
• Survey of the current market for commercial COS products.

Main Results:

• COS exhibit a broad spectrum of biological activities, including antioxidant, antimicrobial, and immunomodulatory effects.
• The molecular weight, degree of deacetylation, and structural characteristics of COS are crucial determinants of their bioactivities.
• Several COS products are commercially available, indicating growing industrial interest.

Conclusions:

• Chitooligosaccharides (COS) represent a versatile class of compounds with significant potential across various industries.
• Understanding the structure-activity relationships of COS is key to optimizing their applications.
• Further research into COS bioactivities and applications can drive innovation in biotechnology and material science.