Antioxidant Activity of Polysaccharides From Natural Sources

Oxidative stress is associated with the development of many diseases, such as chronic inflammation, cardiovascular disease and cancer. Antioxidants can scavenge free radicals in the body, reduce the production of reactive oxygen species (ROS) and effectively prevent oxidative stress. Polysaccharide is a antioxidants that widely found in natural resources, which is a kind of high molecular polymer with antioxidant activity. It can prevent oxidative stress and play a role in disease prevention through various mechanisms. In this paper, the different types of polysaccharides were summarized, such as plant polysaccharides, algal polysaccharides, microbial polysaccharides and animal polysaccharides, and their antioxidant mechanism and application in the treatment of disease were also discussed. we hope this review can offer some theoretical basis and inspiration for the antioxidant activity study and application of polysaccharides from natural resources.