ILs-HPLC simultanesous determination of five alkaloids in Phellodenddri Chinensis Cortex Comparation on effect between Phellodendri Chinensis Cortex and Coptis Rhizoma on organism metabolism in mice Synergistic protective effect of Scutellariae Radix with Phellodendri Chinensis Cortex on Dioscoreae Bulibferae Rhizoma liver toxicity in rats Changes of chemical constituents in Phellodendri Chinensis Cortex before and after charing based on RPLC/Q-TOF-MS technology Changes of chemical constituents in Phellodendri Chinensis Cortex before and after charing based on RPLC/Q-TOF-MS technology Determination of magnoflorine in Coptidis Rhizoma and Phellodendri Chinensis Cortex by LC-MS