Absorption characteristic of total alkaloids from Sophora flavescens and their monomers in Caco-2 cell model Simultaneous determination of 7 alkaloid in Herba Sophorae Alopecuroidis by HPLC Online control of percolation of Fufang Kushen Injection using near infrared transflective spectroscopy Absorption mechanism of oxysophocarpine across Caco-2 cell monolayer mode Simultaneous determination of contents of sophoridine, oxymatrine and oxysophocarpine in seed of Sophora alopecuroides by HPLC Absorption characteristic of total alkaloids from Sophora flavescens and their monomers in Caco-2 cell model