초록

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Antioxidative activity of various solvent extracts from freeze dried Kimchi was studied during the oxidation process of linoleic acid mixture system. The aqueous model systems were used for the evaluation of antioxidative activity of solvent extracts during the oxidative reaction at 37$^{\circ}...

Antioxidative activity of various solvent extracts from freeze dried Kimchi was studied during the oxidation process of linoleic acid mixture system. The aqueous model systems were used for the evaluation of antioxidative activity of solvent extracts during the oxidative reaction at 37$^{\circ}C$ by the determination of peroxide value. The linoleic acid mixture for the aqueous model systems was consisted of linoleic acid (64.6%), oleic acid(27.4%), and other acids in ethanolic phosphate buffer (pH 7.0). Water and methanol extracts of Kimchi had a considerable antioxidative activity with the inhibition of peroxides formation during the autoxidation of linoleic acid mixture in aqueous model systems. Antioxidative activity of 75% methanol extract of 7 day-fermented-Kimchi was relatively higher than that of others, however lower than alpa-tocopherol and butylated hydroxyanisol. The antioxidative effect of 75% methanol extract of 7 day-fermented-Kimchi was increased by the its concentration from 0.5% to 2.5% in the oxidation reactions of aqueous model systems.

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