Ray Sahelian, M.D.
January 20 2016
Polysaccharides are complex carbohydrates made up of
many monosaccharides. Polysaccharides are very large, often branched,
macromolecules. When the monosaccharides in a polysaccharide are the same type
the polysaccharide is called a homopolysaccharide, but when more than one type
of monosaccharide is present they are called heteropolysaccharides.
Storage polysaccharides include starch and glycogen. Structural polysaccharides include cellulose and chitin.
J Zhejiang Univ Sci B. 2014 Feb. In vitro antioxidant activity and potential inhibitory action against α-glucosidase of polysaccharides from fruit peel of tea (Camellia sinensis L.).
Int J Biol Macromol. 2014 Feb 6. Protective effects of polysaccharides from Lilium lancifolium on streptozotocin-induced diabetic mice.
Oxid Med Cell Longev. 2016. Reviews on Mechanisms of In Vitro Antioxidant Activity of Polysaccharides. It is widely acknowledged that the excessive reactive oxygen species (ROS) or reactive nitrogen species (RNS) induced oxidative stress will cause significant damage to cell structure and biomolecular function, directly or indirectly leading to a number of diseases. The overproduction of ROS/RNS will be balanced by nonenzymatic antioxidants and antioxidant enzymes. Polysaccharide or glycoconjugates derived from natural products are of considerable interest from the viewpoint of potent in vivo and in vitro antioxidant activities recently. Particularly, with regard to the in vitro antioxidant systems, polysaccharides are considered as effective free radical scavenger, reducing agent, and ferrous chelator in most of the reports.