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Preparative isolation and purification of seven main antioxidants from Eucommia ulmoides Oliv. (Du-zhong) leaves using HSCCC guided by DPPH-HPLC experiment

Preparative IsolationBiochemistryDpph-hplc ExperimentMedicineBioassay-guided IsolationAnalytical ChemistryPhytochemicalEucommia Ulmoides OlivPhytochemistryPharmacologyChromatographyOxidative Stress