title: Evaluation on antioxidant properties of sixteen plant species from Jeju Island in Korea.
abstract: In this study, the antioxidant properties of 80 % ethanol extracts of 16 species of plants from Jeju Island in Korea were evaluated using various antioxidant assays, including the DPPH (1,1-Diphenyl-2-pricrylhydrazyl) radical scavenging, superoxide scavenging, xanthine oxidase inhibition and hydrogen peroxide scavenging activities. Among the 16 plant extracts tested, CN-13 showed strong antioxidant properties in the DPPH radical scavenging and hydrogen peroxide scavenging tests. The CN-13 ethanol extract was thus selected to be used for further experiments, and was separated into various fractions using four different organic solvents (n-hexane, methylene chloride, ethyl acetate and butanol). The ethyl acetate fraction of CN-13 extract evidenced strong DPPH radical scavenging properties as compared to the other fractions. The ethyl acetate fraction also strongly inhibited DNA-damage induced by hydrogen peroxide-oxidative damage in a mouse lymphoma (L5178Y-R) cell line. Moreover, a correlation between the total phenolic content of the extract, and its antioxidant property was reported.
authors.affiliation: Jeju Center, Korea Basic Science Institute (KBSI), Jeju 690-140, Republic of Korea ; Department of Marine Life Science, Jeju National University, Jeju 690-756, Republic of Korea.
authors.forename: Eun-Yi
authors.initials: EY
authors.lastname: Koa
authors.affiliation: Jeju Center, Korea Basic Science Institute (KBSI), Jeju 690-140, Republic of Korea.
authors.forename: Daekyung
authors.initials: D
authors.lastname: Kim
authors.affiliation: Jeju Center, Korea Basic Science Institute (KBSI), Jeju 690-140, Republic of Korea.
authors.forename: Seong Woon
authors.initials: SW
authors.lastname: Roh
authors.affiliation: Jeju Biodiversity Research Institute, Jeju Technopark, Jeju, 699-943, Republic of Korea.
authors.forename: Weon-Jong
authors.initials: WJ
authors.lastname: Yoonc
authors.affiliation: Department of Marine Life Science, Jeju National University, Jeju 690-756, Republic of Korea.
authors.forename: You-Jin
authors.initials: YJ
authors.lastname: Jeon
authors.affiliation: Department of Marine Bio-Food Sciences, Chonnam National University, Yeosu 550-749, Republic of Korea.
authors.forename: Ginnae
authors.initials: G
authors.lastname: Ahn
authors.affiliation: Jeju Center, Korea Basic Science Institute (KBSI), Jeju 690-140, Republic of Korea.
authors.forename: Kil-Nam
authors.initials: KN
authors.lastname: Kim
keywords: Antioxidant; ethyl acetate fraction; oxidative damage; phenolic compounds; plant extracts