Sulfated Polysaccharides: Structure, Bioactivity, and Applications

Sulfation is a common way of polysaccharide modification, which can alter the structure and biological activity of polysaccharides. The addition of sulfate groups can increase the negative charge of polysaccharides, making them more water-soluble. Meanwhile, sulfation can also affect the stereochemistry and spatial structure of polysaccharides, thereby affecting their biological activity.\n\nThe impacts of sulfated polysaccharides mainly include the following aspects:\n\n1. Improve anti-inflammatory effects: sulfated polysaccharides can bind with inflammatory mediators, thereby reducing inflammatory reactions and exhibiting good anti-inflammatory effects.\n\n2. Enhance immune activity: sulfated polysaccharides can bind with receptors on immune cells, thereby activating immune cells and enhancing their recognition and clearance abilities against foreign pathogens.\n\n3. Improve antioxidant properties: sulfated polysaccharides can improve the antioxidant properties of polysaccharides by enhancing the activity of antioxidant enzymes and reducing the generation of free radicals.\n\n4. Increase bioavailability: sulfated polysaccharides can increase the water-solubility and stability of polysaccharides, thereby increasing their bioavailability.\n\nIn summary, sulfation can alter the structure and biological activity of polysaccharides, providing new ideas and methods for their applications in pharmaceuticals, foods, and other fields.