UPLC and HPLC of caffeoyl esters in wild and cultivated Arctium lappa L.

► We developed an UPLC method and improved a HPLC method. ► 5-CQA and 1,5-DCQA were major compounds of root and leaf of burdock. ► We found considerable variations in analytes of samples. ► UPLC advantages were shorter run time and higher sensitivity.