Journal of the Chilean Chemical Society · 2013 · 38 citations · 0 references
Life SciencesBotanyPlant SciencesEthnobotanyPlant BiochemistryPlant PhysiologyAntioxidant DefenseAromatic PlantsMedicinal PlantsOxidation ReactionsAntioxidant Activity AssaysAntioxidant MetabolitesAntioxidant Natural ProductsAntioxidantsAssayNatural AntioxidantsPlant Antioxidant DefensePlant Extract Antioxidants
Three anthraquinones, the well known emodin (3) and physcion (6) and the new anthraquinone glycoside emodin-8--D-idopyranoside (7) were isolated from leaves of Muehlenbeckia hastulata. The antioxidant activity of these compounds was measured using the DPPH assay; all three showed weaker antioxidant activity than gallic acid.