Antioxidant activities of fucoidan degraded by gamma irradiation and acidic hydrolysis. (April 2015)

• Record Type: Journal Article
• Authors: Lim, Sangyong; Choi, Jong-il; Park, Hyun
• Is Part Of: Radiation physics and chemistry. Volume 109(2015:Apr.)
• Page Start: 23
• Page End: 26
• Publication Date: 2015-04
• Subjects: Fucoidan -- Gamma irradiation -- Antioxidant -- Acid hydrolysis; Radiation chemistry -- Periodicals; Radiometry -- Periodicals; Radiation -- Periodicals; Chimie sous rayonnement -- Périodiques; 539.2
• DOI: 10.1016/j.radphyschem.2014.12.008
• Languages: English
• ISSNs: 0969-806X

Abstract

Abstract: Low molecular weight fucoidan, prepared by radical degradation using gamma ray was investigated for its antioxidant activities with different assay methods. As the molecular weight of fucoidan decreased with a higher absorbed dose, ferric-reducing antioxidant power values increased, but β -carotene bleaching inhibition did not change significantly. The antioxidant activity of acid-degraded fucoidan was also examined to investigate the effect of different degradation methods. At the same molecular weight, fucoidan degraded by gamma irradiation showed higher 1, 1-diphenyl-2-picrylhydrazyl radical scavenging activity than that observed with the acidic method. This result reveals that in addition to molecular weight, the degradation method affects the antioxidant activity of fucoidan. Highlights: Antioxidant activity of fucoidan degraded by gamma-irradiation was analyzed. Degree of change of antioxidant activity was dependent on the measuring method. Acid hydrolyzed fucoidan was compared to gamma-irradiated for its antioxidant activity.