Some researchersreported that with the decrease of molecular weight, the antioxidant activity of chitosan and its derivatives will be enhanced (Sunet al., 2008).
However, there is little research on the relationship between the antioxidant activity and DP of the KOG.
This study suggested KOG with small molecular weight can be successfully prepared by enzymatic hydrolysis, and KOG could potentially be used as a natural antioxidant.