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자료유형
학술저널
저자정보
Heo, Soo-Jin (Faculty of Applied Marine Science, Cheju National University) Cha, Sun-Heui (Faculty of Applied Marine Science, Cheju National University) Lee, Ki-Wan (Faculty of Applied Marine Science, Cheju National University) Cho, So-Mi K. (Faculty of Biotechnology, Cheju National University) Jeon, Yon-Jin (Faculty of Applied Marine Science, Cheju National University)
저널정보
한국조류학회(藻類) Algae Algae 제20권 제3호
발행연도
2005.1
수록면
251 - 260 (10page)

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Antioxidative activities of Chlorophyta and Phaeophyta in Jeju Island were measured by superoxide anion ($O_2^{{\cdot}-}$), hydroxyl radical ($HO^{\cdot}$), hydrogen peroxide ($H_2O_2$) and DPPH free radical scavenging assays. Methanolic and aqueous extracts of the seaweeds were prepared at both temperatures, higher (70$^{\circ}C$) and room temperature (20$^{\circ}C$), and screened for the construction of an extract bank from seaweeds in Jeju Island. A variety of extracts showed positive effect against reactive oxygen species (ROS). Especially, Sargassum thunbergii methanolic extract at 70$^{\circ}C$ (70ME, 97.41%), S. fulvellum methanolic extract at 20$^{\circ}C$ (20ME, 84.66%), Codium fragile aqueous extract at 70$^{\circ}C$ (70AE, 96.61%) and S. thunbergii 20ME (97.44%) exhibited the highest scavenging activities against $O_2^{{\cdot}-}$, $HO^{\cdot}$, $H_2O_2$ and DPPH free radicals, respectively. Total phenolic contents also examined but did not show a positive correlation with ROS scavenging abilities (except for a few extracts). These results indicate that further investigation is needed to identify and purify the responsible antioxidative components.

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