Degradation of Codium cylindricum polysaccharides by HO-Vc-ultrasonic and HO-Fe-ultrasonic treatment: Structural characterization and antioxidant activity.

In this study, two degraded polysaccharides were obtained by HO-Vc-ultrasonic and HO-Fe-ultrasonic treatment from Codium cylindricum. The basic structure of polysaccharides was characterized and the relationship between structure and antioxidant activity was studied. FTIR spectrum indicated that the degraded polysaccharides had similar functional groups (OH, CH, CO group) with ordinary polysaccharides.