Investigation of the antioxidant activity of chitooligosaccharides on mice with high-fat diet

ABSTRACT The objective of this study was to analyze the antioxidant activities of chitooligosaccharides (COS) both in vitro and in high-fat diet (HFD)-mouse model. In antioxidant assays in HFD-mouse model, mice were administered with normal diet, HFD, or HFD with 0.5% COS for six weeks. The administration of HFD with 0.5% COS resulted in significant increase in the activity of superoxide dismutase, catalase, and glutathione peroxidase in stomach, liver, and serum of mice as compared with the HFD-fed group, which means that COS may have certain antioxidant activity and can restore the activity ...