Antioxidant activities of fucoidan degraded by gamma irradiation and acidic hydrolysis

Sangyong Lim, Jong il Choi, Hyun Park

Research output: Contribution to journalArticlepeer-review

17 Citations (Scopus)


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.

Original languageEnglish
Pages (from-to)23-26
Number of pages4
JournalRadiation Physics and Chemistry
Publication statusPublished - 2015 Apr 1
Externally publishedYes


  • Acid hydrolysis
  • Antioxidant
  • Fucoidan
  • Gamma irradiation

ASJC Scopus subject areas

  • Radiation


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