Abstract: Disclosed are novel materials separated from Ecklonia cava, a method for extracting and purifying the same, and the use thereof for antioxidants. The method comprises extracting antioxidative ingredients from powdered Ecklonia cava one or more times with an organic solvent; fractionating the antioxidative ingredients one or more times in solvents; and purifying the solvent fractions by chromatography. Superior in scavenging activity and thermal stability, the extract from Ecklonia cava can be used as antioxidants and is suitable in commercialization.

Abstract: Disclosed are novel materials separated from Ecklonia cava, a method for extracting and purifying the same, and the use thereof for antioxidants. The method comprises extracting antioxidative ingredients from powdered Ecklonia cava one or more times with an organic solvent; fractionating the antioxidative ingredients one or more times in solvents; and purifying the solvent fractions by chromatography. Superior in scavenging activity and thermal stability, the extract from Ecklonia cava can be used as antioxidants and is suitable in commercialization.

Abstract: Disclosed are whitening cosmetics containing extracts from Ecklonia cava. More specifically, Ecklonia cava which has been dried and crushed into powder, is immersed in a solvent, deposited to extract whitening materials, then, the materials are distilled under reduced pressure to obtain extracts from Ecklonia cava, which are added to whitening cosmetics. The whitening cosmetics containing the extracts from Ecklonia cava of the present invention exhibit excellent whitening effect because of strongly inhibiting tyrosinase activity.