Chemical variation in Aurantii Fructus before and after processing based on UHPLC-Q-TOF-MS Qualitative and quantitative analysis of major constituents in Tetrastigma hemsleyanum by HPLC-Q-TOF-MS and UPLC-QqQ-MS Qualitative and quantitative analysis of major constituents of Paeoniae Radix Alba and Paeoniae Radix Rubra by HPLC-DAD-Q-TOF-MS/MS Identification of chemical constituents in Ophiocordyceps xuefengensis sp. nov.by HPLC-Q-TOF-MS/MS Analysis on chemical constituents from Glycyrrhizae Radix et Rhizoma by HPLC-Q-TOF-MS Metabolic distribution and stability of cucurbitacin C in Cucumber sativus