The Antioxidant Activities of Natural Polysaccharides

Background: The natural polysaccharides contain plant polysaccharides, animal polysaccharides and microbial polysaccharides. They are a kind of biological macromolecules with immune regulation, anti-tumor, anti-radiation, anti-inflammation, anti-fatigue and anti-aging effects. Keywords: Polysaccharides, derivatives, antioxidation, mechanism of action, research progresses.