UAME was assessed as most efficient extraction method, compared to HRE, UE and ME.
Cyclodextrin plays specific roles in the extraction of components from P. cuspidatum.
An UAME with HP-β-CD as extractant maximized the extraction yields.
Nineteen compounds were simultaneously identified by HPLC-PDA-ESI-ITMSn.
Two compounds are firstly reported in P. cuspidatum.