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Panax japlcus var is a typical Chinese herb with a large number of saponins existing in all parts of it. The common methods of screening and isolating saponins are mostly labor-intensive and time-consuming. In this study, a new assay based on ultrafiltration-liquid chromatography–mass spectrometry (UF-LC–MS) was developed for the rapid screening and identifying of the ligands for xanthine oxidase...
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