title: Application of gamma irradiation for the enhanced physiological properties of polysaccharides from seaweeds.
abstract: Polysaccharides from seaweeds, fucoidan and laminarin, were irradiated with gamma rays, and their structural changes and anti-oxidative activities were investigated. The gamma irradiation decreased the average molecular weights of polysaccharides, and UV spectra of irradiated polysaccharides showed increases in the numbers of carboxyl and carbonyl groups and double bonds. DPPH radical scavenging ability and reducing power of the gamma irradiated polysaccharides were significantly higher than those non-irradiated.
authors.affiliation: Advanced Radiation Technology Institute, Korea Atomic Energy Research Institute, Jeongeup 580185, Republic of Korea.
authors.forename: Jong-Il
authors.initials: JI
authors.lastname: Choi
authors.forename: Hyun-Joo
authors.initials: HJ
authors.lastname: Kim
authors.forename: Jae-Hun
authors.initials: JH
authors.lastname: Kim
authors.forename: Myung-Woo
authors.initials: MW
authors.lastname: Byun
authors.forename: Byeong
authors.initials: B
authors.lastname: Soo Chun
authors.forename: Dong
authors.initials: D
authors.lastname: Hyun Ahn
authors.forename: Young-Jeong
authors.initials: YJ
authors.lastname: Hwang
authors.forename: Duk-Jin
authors.initials: DJ
authors.lastname: Kim
authors.forename: Gwang Hoon
authors.initials: GH
authors.lastname: Kim
authors.forename: Ju-Woon
authors.initials: JW
authors.lastname: Lee
mesh_terms: D000975:Antioxidants; D016166:Free Radical Scavengers; D005720:Gamma Rays; D005936:Glucans; D008970:Molecular Weight; D010084:Oxidation-Reduction; D011134:Polysaccharides / Q000528:radiation effects*; D012624:Seaweed / Q000737:chemistry*
chemical_list: D000975:Antioxidants; D016166:Free Radical Scavengers; D005936:Glucans; D011134:Polysaccharides; C008247:laminaran; C007789:fucoidan