Separation of polyphenols from leaves of Malus hupehensis (Pamp.) Rehder by off-line two-dimensional High Speed Counter-Current Chromatography combined with recycling elution mode
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Pre One:Rapid screening and identification of antioxidants in the leaves of Malus hupehensis using off-line two-dimensional high performance liquid chromatography-ultraviolet-tandem mass spectrometry coupled with 1, 1’-diphenyl-2-picrylhydrazyl assay
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