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KMID : 1134820060350081097
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Journal of the Korean Society of Food Science and Nutrition
2006 Volume.35 No. 8 p.1097 ~ p.1101
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Antioxidative Activity of Methanolic Extracts from Seaweeds
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Kim Byoung-Mok
Jun Joon-Young
Park Yeung-Beom
Jeong In-Hak
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Abstract
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In this study, seven species of seaweeds (Sargassum horneri, Grateloupia filicina, Kjellmaniella crassifolia, Porphyra tenera, Ecklonia stolonifera, Scytosiphon lomentaria, Agarum cribrosum) from Gangwon coast were collected for antioxidative assays. The methanol soluble and insoluble (water soluble) fraction which were prepared from 75% methanol extraction were assayed by DPPH method and deoxyribose assay. The antioxi-dative activity of methanol soluble fraction of Agarum, Scytosiphon and Sargassum reached to 26.60%, 24.28% and 23.40%, respectively. The antioxidative activities of methanol insoluble fractions of the Kjellmaniella and Porphyra were assayed to 29.70% and 21.01% which were higher than methanol soluble fractions with the values of 9.26% and 8.66%, respectively. The results from DPPH assay and deoxyribose assay showed the methanol soluble fractions of Agarum and Sargassum have strong antioxidative activity. However the methanol insoluble (water soluble) fractions of seaweeds did not show any meaningful antioxidant activity excepted Kjellmaniella and Porphyra.
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KEYWORD
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antioxidative, seaweeds, DPPH assay, hydroxyl radical, methanol soluble
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