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Isolation and identification of a phenolic antioxidant from Aloe barbadensis
K Y Lee1, S T Weintraub, B P Yu
1Department of Food and Nutrition, Ho Seo University, Asan, Chungmam, Korea.
Free Radical Biology & Medicine
|April 3, 2001
Abstract:
A potent antioxidative compound has been isolated from a methanolic extract of Aloe barbadensis Miller using a combination of column and thin-layer chromatography. The antioxidant activity of this substance was similar to that of alpha-tocopherol as assessed in vitro using rat brain homogenates. On the basis of electrospray ionization and electron-impact ionization mass spectra in combination with reversed-phase, high-performance liquid chromatographic behavior, this compound has been identified as 8-C-beta-D-[2-O-(E)-coumaroyl]glucopyranosyl-2-[2-hydroxy]-propyl-7-methoxy-5-methylchromone.