Wang, Lai, Chen, and Chen(2008) found that glucomanno-oligosaccharides (GMO) produced antioxidative effects by increasing radical scavenging ability and eliminating lipid peroxide formation.
Furthermore, fermentation of GMO with a DP of 5 produced great inhibitory effects on thiobarbituric acid-reactive substances formation.
These findings explain that with the proper molecular weight, the antioxidant activity of polysaccharide and its derivatives would be enhanced.